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Ventura County Boys Basketball Overview: Competitive league races get early start
There are two predictions to make with confidence when assessing the league races for the area's boys' basketball teams this season.
They're going be to as wild and woolley as a mammoth. The Marmonte League alone brings back a CIF-SS champion, section finalist and section semifinalist, with most of the key players returning.
They're going to be early, too.
The Marmonte League will play three league games before Christmas, including openers last Tuesday night. It's become somewhat of a tradition for Marmonte coaches and players, even if it's not as palatable as, say, a swig of egg nog.
"I don't think there's a coach in the league that wishes we didn't have to do this," said Royal coach Craig Griffin. "We're still growing and coming together on the basketball floor, and it would be nice to have more nonleague games to do that. But we're all in the same boat and we'd all like to get off to a good start in league."
Calabasas coach Jon Palarz, whose team is the defending CIF-SS 3AA champion, concurs.
"The more games you can play before league starts, the better off you will be," said Palarz. "We want to continue to improve as a team as the season goes along, but that doesn't make the early games any less important."
The Marmonte League isn't alone, either.
The Channel League's five teams will play each league opponent three times. That mandates two league games in December, with Wednesday and Friday matchups this week.
Arch rivals Ventura and Buena will meet Friday night.
The lesson here? League championships aren't won in December. But a slow start this month can put a contender in a hole.
It was a memorable year for area teams a year ago, with Calabasas winning the Division 3AA crown, Royal (2AA) and Oak Park (3A) reaching championship games and Thousand Oaks advancing to the semifinals in 2AA.
Oak Park may epitomize the high hopes held by county squads. The Eagles' magical run a year ago featured a Tri-Valley League championship, a trek to the division finals and the program's first victory in the state tournament.
The returnees this season include stellar senior guard Ron Lee.
"We've got a group that I believe will focus on the task at hand," said Oak Park coach Aaron Shaw. "We had a great season, but this is a different team. You can't look ahead, or it can hurt you. Our focus is again on winning league."
Here in mid-December, no less than 12 area teams are ranked in the top 15 of their respective CIF-SS polls.
In 2AA, Thousand Oaks is No. 2 and Camarillo No. 9; in 2A, Westlake No. 2 and Moorpark No. 9; in 3AA, Calabasas No. 3, Royal No. 8 and Agoura No. 13; in 3A, Oak Park No. 3; in 4AA, Oak Christian No. 10; in 5AA, Santa Clara No. 8; and in 5A, Besant Hill No. 3 and Villanova Prep No. 12.
Ranked or unranked, several area teams hold dreams of an extended run in postseason. Before that can happen, the key may be thriving in your league race.
The Marmonte League shapes up like a demolition derby. Excluding his own team, Royal's Griffin knows how many contenders his Highlanders will face. "All seven teams," he said. "It looks like anybody is capable of beating anybody else."
Calabasas, Royal and Thousand Oaks might be the Big Three.
The defending league champion Coyotes have a star point guard in Jeremy Lieberman and a tough starting lineup led by Max Hoetzel and Austin Smith.
Royal returns four starters, including point guard Max McCoy and 6-foot-9 center Scott Woods, likely the area's best defensive player. Thousand Oaks brings back all five starters, led by sharpshooters Dakota Pierce and Tanner Fanjoy.
Every other league team brings a winning record into league play, including Westlake at 7-1 and winner of the Simi Valley Tip-Off Classic. The Warriors Grant Lozoya will be among the top scorers in the region.
The league's only question mark might be Simi Valley: As in, they'll be good, but how soon? The Pioneers have three freshman in the starting lineup, including 6-5 front-line players Jordan Alexander and Kyle Hamilton.
Ventura and Buena each sport new looks as they launch Channel League play.
Ventura, with just two seniors on the roster, has gotten strong play early from sophomore point guard Dustin Houck. Buena has unleashed a big-time scorer in senior Danny Tatnall, who hasn't played since his freshman year.
The Pacific View League race might resemble the electronics aisle at Best Buy on Black Friday — everything's up for grabs.
Perennial league favorite Oxnard returns just one starter, but hopes to find its chemistry in time for league play in January.
"We're very young and we've got a long way to go," said coach Jeff Staniland. "It might take us a while, but we've got kids that can play."
Senior Daniel Crocker ranks among the top players in the league.
Camarillo, Pacifica and Channel Islands are off to strong starts in pre-league tournaments. Camarillo has a talented cast led by Jacob Alonzo and football star Corbin Covey; Channel Islands counts on Greg Minier and Rolando Marighny; and Pacifica won the Nordhoff Tournament led by Jeremy Corpus.
Rio Mesa has begun 1-3, but might have the most gifted roster, topped by Reggie Dixon, Martel Tyler and Anthony Teart."It's just a matter of putting it together," said Spartans coach Chris Ruffinelli. "We got a lot of inexperience behind those three seniors. Everyone has to learn their roles."
The Tri-Valley League race in recent years has resolved around the neighborhood rivalry between strongboys Oak Park and Oaks Christian.
The Lions might be as deep as any team in the region behind K.J. Smith, Tyler Harris, Ryan Hiepler and Anson Moye. The Eagles have Lee — perhaps the region's top player — and senior JD Slajchert to lead any title run.
Santa Clara will be in the league title hunt behind Deandre Jones and Arman Momim.
Santa Paula and Villanova Prep look like the favorites in the Fronter League.
Santa Paula, fresh off the Fillmore Tournament championship, will contend behind Tim Garcia. Villanova has been led by top scorer Shane Hall.
Besant Hill should thrive in the Condor League with a cast that includes Yuri Howard and Jamal Sanders.
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An optical head of a type useable in a optical disk reader/writer is provided. The optical head has a low profile, e.g., in a vertical direction parallel to the disk spin axis, such as less than about 5 mm preferably less than about 3 mm. Substantially all components of the optical system, including a laser source, objective lens, intervening optics and photo detector are provided in the optical head and mounted in a fixed position with respect to one another. Substantially all optical components of the optical head are moved as a unit, e.g., during tracking and/or focusing. Preferably, the optical head is fabricated using wafer scale and/or stacking technologies, e.g., stacking substantially planar components to achieve the final optical head configuration.
1. An optical head for use in a optical read/write apparatus for use with a read/write medium comprising:
a light source, outputting light at an initial light output location;
at least a first photodetector array mounted in a fixed position with respect to said initial light output location, said first photodetector array having at least a first surface defining a photodetector plane; and
an optical element unit, mounted in a fixed position with respect to said light output location, said optical element unit having a first beam shaping optical element and second beam shaping optical element which receive light output at said light output location to modify the angular divergence of the light output,
said optical element unit including at least a third optical element configured for directing at least a portion of light reflected from said medium along a path for arrival at said first photodetector array;
said optical head providing at least a first optical path, where said first optical path originates at said initial light output location and reaches at least said read/write medium.
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The present application is a continuation-in-part of patent application Ser. No. 09/457,104 filed Dec. 7, 1999, incorporated herein by reference. Cross reference is made to U.S. patent application Ser. No. 09/315,398 entitled Removable Optical Storage Device and System, filed May 20, 1999, and to U.S. Patent Application No. 60/140,633 entitled Combination Mastered and Writeable Medium and Use in Electronic Book Internet Appliance, filed Jun. 23, 1999.
The present invention is related to an optical head, e.g., for use in reading from and writing to an optical disk and in particular to an optical head where substantially all optical components from the laser source to the objective are maintained in a fixed spatial relationship.
One of the important factors affecting design of an optical system (such as a system for an optical disk reader/writer, typically including a laser or other optical source, lenses, reflectors and other components) is the size of the optical system, both in terms of the mass, volume and/or dimensions and in terms of the size and shape of the light as it reaches the optical disk (the spot size and quality). Although a wide variety of systems have been used or proposed, typical previous systems have used optical components that were sufficiently large and/or massive that functions such as focus and/or tracking were performed by moving only some components of the system, such as moving the objective lens (e.g. for focus) relative to the laser or other light source. Without wishing to be bound by any theory, it is believed that the relatively large size of components was related to the spot size, which in turn was substantially dictated by designs in which the data layer of a disk was significantly spaced from the physical surface of the disk (so that the optical path typically passed through a disk substrate, or some other portion of the disk, typically passing through a substantial distance of the disk thickness, such as about 0.6 mm or more, before reaching the data layer).
Regardless of the cause behind providing for relative movement between optical components, such an approach, while perhaps useful for accommodating relatively larger or massive components, presents certain disadvantages, including the relatively large form factors required and the cost associated with establishing and maintaining optical alignment between components which must be made moveable with respect to one another. Such alignment often involves manual and/or individual alignment or adjustment procedures which can undesirably increase manufacturing or fabrication costs for a reader/writer, as well as contributing to costs of design, maintenance, repair and the like. Accordingly, it would be useful to provide an optical head method, system and apparatus which can reduce or eliminate the need for relative movement between optical components, during normal operation and/or can reduce or eliminate at least some alignment procedures, e.g., during reader/writer manufacturing.
Many early optical disks and other optical storage systems provided relatively large-format reader/writer devices including, for example, devices for use in connection with 12 inch (or larger) diameter disks. As optical storage technologies have developed, however, there has been an increasing attention to providing feasible and practical systems which are of relatively smaller size. For some applications, e.g., for use in personal electronic devices (PEDs), e.g. as described in U.S. patent application Ser. No. 09/315,398 for Removable Optical Storage Device and System (incorporated herein by reference), a device for reading and/or writing optical disks is described having a relatively small form factor such as about 10.5 mm height, 50 mm width and 40 mm depth. Generally, a practical reader/writer device must accommodate numerous items within its form factor including the media, media cartridge (if any), media spin motor, power supply and/or conditioning, signal processing, focus, tracking or other servo electronics, in addition to the components associated or affecting the laser or light beam optics. Accordingly, in order to facilitate a relatively small form-factor, it would be advantageous to provide an optical head apparatus, system and method which can occupy a relatively small volume. In addition to total volume considerations, constraints imposed by a desired form factor and/or the need to accommodate other reader/writer components can make it advantageous to provide an optical head apparatus system and method which is relatively small in certain dimensions such as having a relatively small vertical profile or dimensional requirement (with "vertical" referring to a direction parallel to the optical disk spin axis), although reduction of requirements in other dimensions (such as a longitudinal dimension parallel to an optical arm axis and/or a lateral dimension perpendicular to the longitudinal axis) may also be of importance. Provision of a low vertical profile configuration can be specially problematic since, for at least some optical designs (including, e.g. finite conjugate designs), a minimum optical path may be required or advisable (although the read/write beam generally must reach the optical disk substantially normal to the plane of the disk). Accordingly, it would be useful to provide an optical head apparatus system and method which can reduce dimensional requirements such as reducing vertical dimension requirements, e.g., in the case of a PED to less than about 12 mm, preferably less than about 5 mm and more preferably less than about 3 mm.
A number of optical reader/writer devices, including, for example, relatively large devices such as audio compact disk (CD) players in a typical home stereo system, present relatively little concern with power management or power budgets (typically having access to AC line level power or the like). As a result, in many such systems, it is feasible to provide an optical design which is relatively inefficient of optical power (such as by substantially overfilling lenses and the like, e.g. to accommodate noncircularity of laser sources). In contrast, devices such as those-described in this application Ser. Nos. 09/315,398, supra and or 60/140,633 intended to be lightweight and portable, generally must operate with a limited power budget (and also have a more limited ability to dissipate heat, compared with larger systems). Accordingly, it would be useful to provide a optical head apparatus system and method which can achieve the desired optical quality (e.g. accommodating noncircularity or other optical features) while avoiding undue energy inefficiency and/or unnecessary heat generation (e.g. arising from substantial overfilling of lenses or other optical inefficiencies which in turn require higher optical power and hence higher electrical power lasers which dissipate more heat).
The present invention provides a practical and feasible system in which substantially all components of the optical head from the laser or other light source to the objective move together as a unit (e.g. for focus and/or tracking), i.e. in which substantially each optical component of the optical head is in a fixed location with respect to other components.
In one embodiment, the optical head is based on a wafer-scale fabrication approach. Preferably, a silicon or similar wafer having electronics formed therein, in the normal fashion, has optical components stacked or otherwise positioned thereon, preferably at least some components being placed prior to slicing the wafer, to form the optical components of the optical head. In one embodiment, a first mirror/spacer level is positioned on the wafer and one or more levels of optics (generally proportioned similar to the proportions of the "chip" after wafer slicing) are positioned on the top of the spacers. In one embodiment, alignment of some or all optical layers above the spacer is performed while the laser source (preferably mounted on the wafer) is emitting laser light, and using the emitted laser light to assist in positioning or alignment.
In one embodiment, the read/write beam travels through one of the optics layers in a direction substantially parallel to the plane of the disk. Providing a configuration in which a substantial portion of the optical path is parallel to the plane of the disk assists in providing a relatively low vertical profile. By providing a system which can use wafer-scale fabrication and which can be fabricated by stacking discrete components such as spacers, optical components and the like, it is possible to construct a small, high precision, low weight, low profile and/or small spot-size optical head at relatively low fabrication costs. As used herein, "read/write" refers to configurations that are used for only for reading and to configurations that are used for both reading and writing.
In one aspect an optical head of a type useable in a optical disk reader/writer is provided. The optical head has a low profile, e.g., in a vertical direction parallel to the disk spin axis, such as less than about 5 mm preferably less than about 3 mm. Substantially all components of the optical system, including a laser source, objective lens, intervening optics and photo detector are provided in the optical head and mounted in a fixed position with respect to one another. Substantially all optical components of the optical head are moved as a unit, e.g., during tracking and/or focusing. Preferably, the optical head is fabricated using wafer scale and/or stacking technologies, e.g., stacking substantially planar components to achieve the final optical head configuration.
The present invention can be used in the context of a number of drives and drive configurations, including as described in U.S. patent application Ser. No. 09/315,398, supra. In the configuration depicted in
The size, mass, volume, shape and/or vertical, longitudinal and/or lateral dimensions or requirements and/or cost of the optical head 128 are of significance to the overall feasibility and cost of a drive device 112, especially when the configuration of the drive device 112 places constraints on the position, size, shape or cost of other components of the drive 112, and particularly when it is desired to substantially accommodate the drive 112 in a certain form factor, e.g., as described in U.S. patent application Ser. No. 09/315,398, supra.
In a preferred embodiment, the optical path is configured such that the optical path length (measured along the optical axis, following any folding of the optical path) from the source to the objective is substantially greater than the distance from the objective to the data surface of the medium. In one embodiment, the ratio of the source-to-objective path length to the objective-to-data surface path length is at least about 5. As used herein "objective" or "objective lens" refers to the component which focuses light onto the recording layer or recording surface of the medium. Although this is typically a conventional refractive lens, it can also include reflective, diffractive, or holographic components. Although typically the last or ultimate optical component along the optical path before the light reaches the medium, "objective" or "objective lens" as used herein can also encompass items which may not be the last optical component before reaching the medium. The optical path length from the objective to the data surface is a function of a number of factors including the numerical aperture of the lens, the distance (if any) from the disk surface to the data surface and the smallest safe spacing between the optical head and the disk surface (the "working distance"). In one embodiment, it is desired to provide an optical path length from the source to the objective greater than about 2.5 mm, preferably greater than about 4 mm, and even more preferably greater than about 4.5 mm. One embodiment of the present invention involves achieving such a source-to-objective path length while providing a low-profile device, preferably such that a reader/writer device can be accommodated in a form factor with a (vertical) profile less than about 10.5 mm, preferably less than or equal to about 6 mm.
In the depicted embodiment, media 118 rotates 212 about a spin axis 214 which defines what will be referred to herein as the vertical direction. Spinning of the disk 212 provides for alignment of the light beam with (successive) circumferential positions on the disk 118. Alignment with desired radial positions (tracking) is provided by moving the optical head 128 in a direction having a radial component, preferably by rotating 216 the optical arm 142 about a substantially vertical axis 218 so that the position at which the light beam reaches the disk 118 defines an arc 222 extending throughout a predetermined radial range of the disk 118. In the depicted embodiment, to provide focusing, the entire optical head 128 is moved, as a unit, along a path having a vertical component such as by pivoting 224 the arm 142 about a substantially horizontal axis 226. Although the illustration of
Below the periscope 318 is an optical die or "optical element unit" (OEU) 326. Use of the term "die" represents a convenience, and should not be taken as limiting the invention to only the depicted parallelepiped, parallelogram or other shapes depicted herein. The OEU 326 is provided with lenses, gratings, holograms, and/or other optical components or devices, as described more thoroughly below.
The OEU 326 is coupled by spacer blocks 332, 334 to an underlying sub-mount 336 (preferably sliced from a silicon or similar wafer, as described more thoroughly below). In the depicted embodiment, the sub-mount 336 is positioned on a printed circuit board 338 or flex circuit.
The light path has its origin in the laser diode 612 mounted, with respect to the sub-mount 336, e.g., using a laser mount 614. In one embodiment, the laser beam is not collimated but follows a diverging configuration substantially from the laser source to the objective lens which forms a finite conjugate imaging system. In this configuration the beam-forming optics are provided principally for fully or partially circularizing the light and/or fully or partially correcting astigmatism and/or providing a beam pointing adjustment function. One potential advantage of a finite conjugate (point-to-point imaging system) is that the substantial demagnification provides an effective reduction or elimination of the astigmatism that arises from the laser. However, circularizing lens 352 a may create sufficient astigmatism that a second lens or other optics 352 b may be advisable for correcting astigmatism. It is also possible to position lenses or other optics on the surface of the submount 336 between the laser and the mirror block 332, e.g. for circularizing or other optics purposes. In one embodiment lenses or similar optics 352 a, b along the optical path are configured to at least partially correct for angular errors in the mounting (and thus the beam direction) of the laser diode.
In the depicted embodiment, the laser diode is a side-emitting laser diode and the horizontal laser beam 616 output by the laser diode 612 is reflected to a vertical beam by a 45� surface 618 positioned with respect to the sub-mount 338 preferably by being incorporated as a surfaces of one of the spacers 332. In one embodiment, a portion of the emitted laser beam is reflected back (e.g. from the OEU 326) for purposes of monitoring and controlling laser power output. In one embodiment, the laser is a red-light laser. Preferably, however, the present invention can accommodate the use of shorter-wavelength lasers, such as blue-light lasers, (e.g. for achieving decreased spot size and increased data density) while still retaining the same general configuration of the optical head as used with red-light lasers (such as configurations having substantially all optical components moving together, mounted at one end of the optical arm, formed of one or more optical-element plates, each with multiple optical elements, and/or defining an optical path with the majority of the length through a glass or other solid substance), although some details (such as shape or power of lenses or other optics, pupil size, etc.) may be changed to accommodate short-wavelength light.
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Although a number of shapes and sizes of devices can be used according to the present invention, in one embodiment, the sub-mount 336 has a length 512 of about 5 mm and a lateral dimension 412 of about 1.5 mm.
The optical die or optical element ("OE") block 326 which is to be positioned above the sub-mount 336 (and spaced therefrom by the spacers 332, 334) can have a number of different configurations, depending on the desired functions. In the embodiment depicted in
The optics 352 a,b, 354 can be lenses or similar refractive optics, gratings or holograms or other diffractive optics and the like. In some embodiments, optics may be formed in the optical die by etching techniques including providing approximate stepped shapes, continuous shapes, segmented or "telescoped" lenses, Fresnel lenses, and the like. In general, refractive optics are preferred, when otherwise feasible, because of the relatively higher sensitivity of diffractive optics to wavelength.
The OEU is preferably a substantially planar (rectangular parallelepiped) block located between the substrate or submount and the periscope. The OEU is provided with a plurality of optical elements or components, whose configuration, fabrication, function and position may be different in different embodiments.
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In the embodiment of
The beam-shaping optics 1808, 1810 may be refractive and/or diffractive components placed in the path of the outgoing beam e.g. to modify the angular divergence of the laser beam, e.g. specifically to achieve a desired beam profile at the pupil 1852 of the objective lens 1854. The relationship between the size and intensity-profile of the laser beam as it reaches the objective lens 1854, with respect to the size and shape of the objective lens 1854 affects the shape of the focused spot at the disk 1856, and hence the ability to resolve data marks, and affects the amount of track-to-track and in-track cross-talk. When the laser source 1832 is a edge emitter laser diode, as depicted, the laser beam, initially, will be generally in the form of an elliptical Gaussian beam. The beam, as it reaches the objective lens 1854 will have one elliptical axis substantially tangential to the disc tracks and the other elliptical axis substantially radial to the disk tracks. The intensity of the laser light at the circumference of the objective lens 1854 in the radial and tangential directions (expressed as a percentage of the central beam intensity) are referred to as the rim intensities in these directions. A particular drive design may place lower or upper limits on rim intensities. In at least some embodiments, and especially in the case of low power drives, e.g. for portable devices, there may be a constraint to provide a relatively high amount of light or percentage of light reaching the disk from the laser. In these cases, lower rim intensities are generally preferred since this is indicative that overfilling the lens is being substantially avoided thus, avoiding the spilling or wasting of light energy. In one embodiment the rim intensity is not greater than about 80% in the tangential direction and/or not greater than about 40% in the radial direction (compared to the central or maximum intensity). In one embodiment the rim intensity is preferably not less than about 50% in the tangential direction and/or not less than about 15% in the radial direction. In the limit of low rim intensities, all of the available light is passed by the lens. Accordingly, in at least one embodiment, the beam shaping optics 1808, 1810 are configured to assist in modifying the beam to achieve the desired intensity (or other) profile at the lens 1854. In at least one embodiment, one or both of the beam-shaping lenses 1808, 1810 are anamorphic, aspheric elements.
Although in the embodiment of
In some embodiments, portions of surfaces of the OEU 1802 (or other components, such as the periscope 1836) are coated with an absorptive coating 1812 patterned on the top 1846 or bottom surfaces 1848 (or on the side or end surfaces). Absorptive coatings can be used to control the path of unwanted light within the optical head. With the laser and detectors in relatively close proximity, and in close proximity with many surfaces that may have varying reflectivities (including the substrate 1830, surfaces of the OEU 1802, periscope 1836, lens 1854 and lens mount and the like, there is a potential for unwanted light reaching optical detectors 1844, 1828 causing erroneous signals of various types such as a focus or tracking offset). In some embodiments, substantially all surfaces which are not designed to permit passage of desired light are coated with a absorptive (or reflective) coating. In another approach, optical ray-tracing (or empirical observation) can determine likely paths of undesired light and locate optimum placement of areas of black (or low reflectance) material designed to minimize unwanted signals.
A number of materials can be used as an absorptive coating such as a single layer of a highly absorbent material such as germanium or silicon. If desired, such absorptive layers may be provided with an additional coating such as an anti-reflective coating to further improve performance. In some embodiments, the absorptive coating may be a multi-layer absorber/anti-reflector (e.g. chromium/anti-reflector multi-layers).
In some embodiments, some regions of the OEU (or other components) may be provided with patterned reflective coatings 1814. These may be positioned and configured to perform functions similar to those of patterned absorptive coatings described above. Patterned reflective coatings may be used to deflect unwanted light which would otherwise fall on detectors. In addition, reflective coatings may be used to help direct light towards a detector such as in the case of the forward sense optic 1804. Reflective coatings can be made from a number of materials having appropriate reflectance and adhesion, including single-layer or multi-layer coatings of metals or metal alloys such as aluminum, gold, silver, chromium, and the like or from single or multilayer dielectric coatings. Other materials for use as reflective coatings will be understood by those of skill in the art after understanding the present disclosure.
In some embodiments, anti-reflection coatings are provided on selected surfaces or portions thereof, e.g. to reduce reflections which may cause unwanted signals on detectors and/or to reduce the amount of reflective loss of optical power in the system. In general, anti-reflective coatings may be used on surfaces which are not in optical contact with other surfaces of the same refractive index. In such cases, in the absence of anti-reflection coatings, there is always some reflection loss. For example, typically a glass-air interface reflects about 4 percent of the light (at normal incidence). In a case where the OEU 1802 is solder-pad bonded to the periscope 1836, a gap (typically of a few micrometers) is present, which is filled with air, and unwanted reflections can occur unless anti-reflection coatings are applied. In the case where the optic block 1802 is substantially adjacent to the periscope 1836 (e.g. in cemented or adhesive-bonded configurations), some or all of the optics 1804, 1806, 1810 may be formed by an etching or similar process to provide regions which are recessed below the upper surface 1846, thus creating an air gap. A number of materials can be used as anti-reflection coatings. In one embodiment, single or multi-layer thin films, usually of a dielectric material such as magnesium fluoride, applied in predetermined thicknesses, will reduce or substantially eliminate optical reflections over a specific wavelength and angular range. Those of skill in the art will understand how to select and apply anti-reflective coatings after understanding the present disclosure.
In some embodiments, to assist in optically aligning the OEU for assembly to the substrate or periscope, alignment marks 1912, 1914 are provided. In some embodiments the alignment marks 1912, 1914 are sized and shaped to overlap or compliment corresponding marks on other components, such as the substrate 1830 or periscope 1836, to facilitate precise location, such as location to a precision of about 10 micrometers or less. A number of materials and procedures can be used for forming alignment marks. In one embodiment, the alignment marks are photolithographically-defined lines or targets which may be formed during any of the other photolithographic steps in the fabrication of the OEU and/or etched or coated along with other components such as the forward sense element or the servo-optical element. The marks may be on the top surface (
In some embodiments, substantially all of the optical components of the OEU are formed by patterned lithography and/or etching in glass (or other optical material), possibly in conjunction with a variety of coating steps. Such processes are typically suitable for processing at "wafer scale" i.e. a relatively large (e.g. 3 inch to 6 inch diameter) wafer of glass or optical material may be lithographically patterned to define a large number of individual parts, each part being on the "chip" scale (such as around 1 mm to 5 mm, or smaller). All of the individual parts on the wafer may be processed simultaneously (etched, coated, etc.) leading to low-cost individual parts. Further cost reduction is provided by forming multiple optical elements 1804, 1806, 1808, 1810) on a single block 1802 using photolithographic or similar techniques, such that the relative positioning of the optical components on the block 1802 are predefined and provided with a high degree of precision. In this way, it is possible to avoid the cost of aligning individual optical elements during device fabrication (which can be an expensive procedure, particularly for small-scale devices such as devices having multiple optical elements on the scale of about 1 mm to 5 mm.
Preferably the OEU 326 is formed of a glass or plastic (e.g. polycarbonate, acrylic and the like) with the optics formed therein in predefined positions prior to assembly. Glass is preferred, when otherwise feasible, because it is relatively insensitive to temperature and water absorption (or other chemical attack) and can be joined to other components using higher temperature techniques such as solder reflow. In one embodiment, the OEU 1802 is joined to the periscope 1836 by an adhesive. Preferably, one or both of the interface surfaces such as the upper surface 1846 of the OEU 1802 has one or more channels or moats 2102, 2104 formed therein, e.g. by saw cuts or the like (FIG. 21). In one embodiment the width and depth of each moat is about 100 micrometers. In one technique, after the upper surface 1846 is placed in the desired alignment and position adjacent the lower surface of the prism or periscope 1836, an adhesive is introduced along the edges 2106, 2108 and allowed to "wick" or flow by capillary action, inwardly 2110, 2112. The moats 2102, 2104 receive any excess adhesive and prevent the adhesive from flowing inwardly substantially beyond the locations of the moats 2102, 2104 (since adhesive, inward of the moats 2102, 2104, could potentially interfere with the lenses 1810 or other optics).
In one embodiment, the optical die 326 is placed in the desired operable position with the aid of light from the laser diode 612. In this embodiment, the laser diode is connected to at least power and control circuitry prior to mounting of the optical die 326 and the silicon sub-mount 336 can be provided with power sufficient to provide the laser light output from the laser diode 612 and, optionally, to detect signals at a photo-diode or similar detector array (including those 3 on the submount 1830). In one embodiment, positioning equipment for placing and mounting the optical die with respect to the submount 1830 involves monitoring characteristics of light 2T transmitted through one or both of the beam shaping optics 352 a,b and/or servo optics 354 as the optical die 326 is moved and positioned. Preferably, the optical die 326 is mounted with respect to the spacers 332, 334 using well known techniques such as solder reflow. By using a procedure in which the optical die is positioned while light is being emitted from the laser (or other light source), and in which the position and/or focus or other characteristics of the light is used to guide optical-die-positioning equipment (preferably in a substantially automatic fashion, such as by using detected light to define a servo or control signal for the positioning equipment), the positioning of the optical die can at least partially compensate for various inaccuracies in the position of the laser (or other light source).
It is also possible to use an active alignment technique (i.e. using light from the laser to help in component placement, during fabrication) to at least partially compensate for inaccuracies in the relative position of the laser (or other light source) with respect to the photodector(s) 356. In one embodiment, after the optical die is positioned and fixed, the periscope block, preferably with the objective already mounted thereon, is positioned using active alignment. In one embodiment, a mirror is positioned near the objective (e.g. to mimic the reflection from the optical disk) and the periscope block is moved until the reflected light forms a desired or closest-fit pattern with respect to the photodetector(s). In at least one embodiment, it is believed that moving the periscope block is most feasible for positioning the reflected beam in a lateral direction (i.e. a direction perpendicular to the longitudinal axis of the optical arm). Accordingly, it is believed useful, in at least some embodiments, to select a type or configuration of photodetector(s) which is relatively insensitive to inaccuracies of beam placement in the longitudinal direction. In that way, the active alignment technique can be used to position the periscope block so as to provide the greatest accuracy of beam placement in the lateral direction, where the photodector(s) are most sensitive to inaccuracies.
Although it is possible, in some configurations, to position the optical die 326 prior to positioning of other components (such as the periscope 318, lens 312 and the like), in another embodiment, it is also possible to separately assemble some or all of the periscope 318 quarter wave plate 316, and/or lens 312 and the like to the optical die 326 prior to mounting the optical die 326 with respect to the spacers 332, 334. Regardless of the order in which the various components are aligned and mounted, embodiments of the present invention are believed to provide substantial benefits arising from employing wafer scale assembly techniques and/or multiple layer (stacking) assembly techniques to fabricate the optical head. By providing a relatively inexpensive and practical fashion for assembling an optical head to achieve a desired (and substantially static) alignment between components, the assembly of the entire drive 112 is simplified since critical alignment has already been performed during assembly of the optical head and relatively less critical or higher-tolerant assembly of the head to the arm 142 can be achieved, e.g., in a drive manufacturing or assembly plant at relatively low cost.
The periscope 318 is mounted, e.g., using solder reflow, adhesive or similar assembly techniques, to position the periscope mirror 322 in the desired position with respect to the optical die beam shaping optics 352 ab so as to reflect the beam in a horizontal direction 358, i.e., substantially parallel to the data surface of the disk 362. The polarization beam splitter 324 is, in the depicted embodiment, substantially parallel to the periscope mirror 322 (i.e. substantially at about a 45� angle with respect to vertical) and may be formed by a coating (PBS coating) placed on a surface of a first block of the periscope 318 preferably with the coated surface mating with a surface of a end block 364 of the periscope 318. The PBS 324 is selected or applied in such a fashion that the PBS will be substantially reflective with respect to the polarization of laser light as it arrives at the PBS ("first polarization"). Those of skill in the art will understand how to select or control polarization or polarization beam splitters in this fashion.
Accordingly, the PBS reflects the laser beam in a vertically upward direction (i.e. towards the disk 362, 366). The beam travels through the quarter wave plate 316 and thence through an objective lens 312 aligned with the quarter wavelength by the lens mount 314. The objective lens 312 is configured to substantially provide the desired spot size (focus) with respect to the read/write surface of the (preferably first surface) disk 362.
Although a number of sizes and shapes of devices can be used in accordance with embodiments of the present invention, in the depicted device, the height 514 from the printed circuit board 338 to the lens 314 is about 2.9 mm. In one embodiment, the distance from the objective lens 312 to the surface of the disk 362 (defining the working distance for the optical system) is about 0.3 mm.
After reaching the disk 362, and depending on the portion of the disk illuminated and whether a data bit is present or absent at that position, light reflected from the disk 362 passes vertically downward to the objective lens 312 and quarter wave plate 316. At this point (e.g. because of passage twice through the quarter wave plate 316), polarization of the reflected light as it reaches the PBS coating is different from the first polarization and the PBS coating 324 is configured to allow substantially all of the reflected light to pass through the PBS coating and continue vertically downward, through the servo optics 354 and to the photo detector array 356.
A number of types of photo detector array can be used including quadrant detectors, φ detectors and the like, and the type of servo optics 354 will be selected corresponding to the type of detector being used, as will be understood by those of skill in the art after understanding the present disclosure.
In one embodiment, the substrate 1830 is provided with first and second ("A" and "B") optical detectors 2201, 2202 (
Providing a two-detector scheme 2201, 2202 permits the use of a differential detection approach. Differential detection generally provides improved performance compared to non-differential (single detector array) schemes, at least in terms of reduced cross-talk (tracking-to-focus cross-talk or offsets resulting from distorted beams), since differential schemes tend to reject common-mode noise between the detectors. In one embodiment, tracking-to-focus cross-talk is less than about 0.25 micrometers peak-to-peak (p—p), preferably less than about 0.1 micrometers p—p. In one embodiment, tracking-to-track cross-talk is less than about 5%, preferably less than about 2%. A two-detector scheme working configuration as shown in
In one embodiment, a focus error signal ("FES") for each of the detectors 2201, 2202 is obtained by combining signals from each of three parallel bar-shaped detector regions in each of the detectors 2211, 2212, 2213, 2221, 2222, 2223. According to one embodiment, a focus error signal for the first or "A" detector 2201, termed "FESA", is obtained by combining the negative or inverse of the signals from the outermost regions of the first array, i.e. A1 2211 and A3 2213 with the signal from the central region A2 2212. Expressed algebraically, FESA=A2−(A1+A3). Similarly, in this embodiment, a focus error signal for the second detector 2202 can be expressed as FESB=B2−(B1+B3). It can be seen that, in this fashion, each of the two FES signals from the two detectors 2201, 2202 is related to the size of the footprints of the beams 2203, 2204 which impinge on the detectors 2201, 2202. The size of the footprints 2203, 2204 will vary depending on the degree or amount of focus of the light spot on the medium 1856 (FIG. 18), e.g., in a pivot-focus apparatus, as the optical arm (or a portion thereof) pivots 224 (FIG. 2).
In a similar fashion, a combined tracking error signal can be defined as TES=(A1−A3)+(B1−B3), and a combined data signal can be defined as Data=(A1+A2+A3+B1+B2+B3). In one embodiment, the combined focus error signal TES has a maximum departure from linearity (e.g. departure from a best-fit linearity) at any point within the capture region of less than about 10%, preferably less than about 2%.
If desired, both the FES and TES can be normalized to the total power in each signal, e.g. to reduce the effect of a signal amplitude change (such as due to disk reflectivity differences or beam vignetting, e.g. over actuator stroke, or similar effects). For example, normalized FES and TES signals can be provided as FESnormal=[(A1+A3−A2)/(A1+A2+A3)]−[(B1+B3−B2)/(B1+B2+B3)] and TESnormalized=[(A1−A3)/(A1+A3)]+[(B3−B1)/(B1+B3)]. The various combinations of signals from the regions of the two detectors can be combined in an analog or electronic fashion, or can be digitized and combined digitally (or a combination of both approaches).
In one embodiment, the relative size of the central element in each detector 2212, 2222 can be adjusted to reduce the cross-talk of the tracking signal TES into focus signals FES for different-detector positions with respect to the object lens and/or different groove geometries of the medium 1856 (on media with a groove) or different pit geometries on media with premastered pits.
One of the significant factors in design of devices, according to embodiments of the present invention, relates to thermal management. Many laser diodes or other light sources can be significant heat sources. In addition, many electrical or electronic components, such as power supplies or conditioners, resistors, diodes, and other items, can add to the total heat load. It would not be unexpected to use a laser device having a power output near 200 milliwatts. Elevated temperature can damage, or degrade performance, of electronic components and/or media, both in a drive, and in a PED or other device which incorporates a drive. Lasers and other components may have performance characteristics which change, sometimes radically, as a function of temperature, and it may be difficult or expensive to adequately compensate for such changes. Further, products which perceptibly generate heat may have reduced commercial appeal. Previous electronic or electro-optical devices commonly used relatively large, heavy or power-consuming components, such as large and/or heavy heat sinks, fans and the like. The present invention, however, is preferably a low-profile (or otherwise small) device and is especially suited to (although not necessarily limited to) use in connection with PEDs or other small, lightweight, low-power devices. Accordingly, it is preferred to configure the optical head in a fashion to avoid concentrations or quantities of heat an/or to avoid elevated temperatures which might harm equipment or components or which might degrade performance. Preferably, in at least one embodiment, at least a portion of the underside of the flex circuit 338′ (preferably with the portion 1214 extending over some or all of the cut-out region 1212) has a coating or layer of a thermally conductive material, such as copper, e.g. to act as a heat sink or heat dissipater. In one embodiment, the submount 614 (if present) is formed of a substantially thermally conductive material, such as aluminum nitride or silicon carbide. The submount has a relatively large surface area (e.g. compared to the footprint of the laser diode 612 and/or mount 614) to effectively spread the heat, generated by the laser, over a relatively large surface area, avoiding concentrations of heat and undue (locally) elevated temperatures.
In addition to provisions for thermal management and electronic coupling of the optics head 128 to the arm 142, embodiments of the present invention also include provisions for mechanical mounting or coupling of the optics head 128 with respect to the arm 142. In the embodiment depicted in
Another embodiment of the invention is depicted in FIG. 10. While
Another embodiment of the present invention is depicted in FIG. 16. In the embodiment of
Another embodiment of the invention is depicted in FIG. 26. In the embodiment of
One advantage of eliminating an SOE (e.g. such as in the embodiment of
In light of the above description, a number of advantages of the present invention can be seen. The present invention includes a recognition that a small spot size compatible with high data density (e.g. as facilitated by use of a first surface medium) makes it feasible to provide substantially all optical components in a small and/or lightweight package, e.g., such that tracking and/or focus can be performed by moving the entire optics package or head (as opposed to, e.g., moving just the objective lens). The present invention provides a device which is not only sufficiently small and lightweight to maintain all of the optics components in fixed positions with respect to one another, but also to provide these components with spatial extends in various directions, such as providing a small vertical (low profile) optical head so as to be compatible with the form factors of a type consistent with use in small and/or portable drives or host devices, e.g., personal electronic devices. The present invention can provide an optical head which is highly efficient such as by using an optical design which substantially avoids overfilling or otherwise spilling optical or other energy. The present invention provides a design in which some or all steps of fabrication can be performed in a relatively inexpensive fashion such as using techniques from wafer-scale fabrication technology and/or using a planar or stacking technique for assembling the optical head. One characteristic of an optical device such as that disclosed herein which contains multiple optical elements on various surfaces of one or more optical blocks, is that the substantial majority of the optical path link from the laser source to the objective is through a solid (glass or other) medium, with only a minor portion being through air. In one embodiment, the percentage of the optical path from the laser source to the objective lens which is in a glass or other solid medium (as opposed to being through air) is greater than about 50 percent, preferably greater than about 75 percent, and more preferably greater than about 85 percent. In one embodiment, of a total optical path length (from the laser to the objective lens) of about 5500 micrometers, about 5000 micrometers of the path link is through the glass (or other solid) substance (e.g., the optical block 1802 and periscope 1836). About 450 micrometers of the total optical path is through air from the laser to the OEU 1802, with other portions of the path, through air, potentially occurring at the interface between the optical block 1802 and periscope 1836 and/or between the periscope 1836 (or quarterwave plate 316) and objective lens 1854.
A number of variations and modifications of the present invention can be used. It is possible to use some aspects of the invention without using others. For example, it is possible to provide an optical head which is sufficiently small and/or lightweight that it becomes feasible to move the entire optical head (e.g. for tracking and/or focus) without using the wafer-scale and/or stacking fabrication techniques described herein. In one embodiment, some or all of the optics depicted as being provided in, or on, a separate optics die 326 can be formed in or on the periscope or optical block 322, thus potentially making it possible to provide embodiments of the present invention do not require providing or assembling a separate optical die 326 (i.e. placing a combined prism/optics component directly on the spacers 322, 324). Similarly, although embodiments are depicted in which substantially all optical elements (other than, perhaps, the objective lens and quarterwave plate) are formed in or on two units (the optical element unit and the periscope), it is possible to implement the present invention using three or more units to provide the optical elements. Although in embodiments depicted herein, a polarization beam splitter was used for discriminating emitted and reflected light, other techniques or devices for discriminating emitted and reflected light 1722 (
The present invention, in various embodiments, includes components, methods, processes, systems and/or apparatus substantially as depicted and described herein, including various embodiments, subcombinations, and subsets thereof. Those of skill in the art will understand how to make and use the present invention after understanding the present disclosure. The present invention, in various embodiments, includes providing devices and processes in the absence of items not depicted and/or described herein or in various embodiments hereof, including in the absence of such items as may have been used in previous devices or processes, e.g. for improving performance, achieving ease and\or reducing cost of implementation. The present invention includes items which are novel, and terminology adapted from previous and/or analogous technologies, for convenience in describing novel items or processes, do not necessarily retain all aspects of conventional usage of such terminology.
The foregoing discussion of the invention has been presented for purposes of illustration and description. The foregoing is not intended to limit the invention to the form or forms disclosed herein. Although the description of the invention has included description of one or more embodiments and certain variations and modifications, other variations and modifications are within the scope of the invention, e.g. as may be within the skill and knowledge of those in the art, after understanding the present disclosure. It is intended to obtain rights which include alternative embodiments to the extent permitted, including alternate, interchangeable and/or equivalent structures, functions, ranges or steps to those claimed, whether or not such alternate, interchangeable and/or equivalent structures, functions, ranges or steps are disclosed herein, and without intending to publicly dedicate any patentable subject matter.
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text:
Netanyahu asks Abbas to continue talks despite end of freeze
Israeli Premier Benjamin Netanyahu called on the Palestinians to continue direct peace negotiations despite an end to the ban on West Bank settlement construction. In a statement moments after the end of the 10-month partial freeze, the Israeli leader asked Palestinian Authority chief Mahmoud Abbas to continue seeking a "historic" deal.
Earlier, Abbas warned that peace talks would be a "waste of time" unless the freeze was extended.
It is expected that the construction of dozens of housing units will resumed on Monday.
Meanwhile, Washington renewed calls for Israel to maintain the construction freeze, saying its position on the issue remained unchanged. US Secretary of State Hillary Clinton spoke with Netanyahu and also with Tony Blair, the representative of the Middle East Quartet (the EU, Russia, the UN and US), as the end of the construction freeze neared, a spokesman said


text:
Updated at: 05/01/2013 12:05 PM
By JAMIE STENGLE
(AP) DALLAS - The George W. Bush Presidential Library and Museum opened to the public Wednesday, with the 43rd president greeting 43 area schoolchildren who were its first visitors.
"It was amazing seeing one of our nation's leaders who left an eight year legacy behind him," said Eduardo Borrego, a 6th grader Mark Twain Elementary in Richardson. He added, "I was like, `I can't believe he's here.'"
The library and museum, along with Bush's policy institute, are housed in the George W. Bush Presidential Center on the campus of Southern Methodist University in Dallas. The center was dedicated last week during a ceremony that featured Bush, President Barack Obama, and former Presidents Bill Clinton, Jimmy Carter and George H.W. Bush, who is Bush's father.
The 43 Dallas-Fort Worth area students were chosen by their superintendents to be the first visitors to the museum Wednesday, said library and museum spokesman John Orrell. He said about 300,000 visitors a year are expected.
The museum includes exhibits on the Sept. 11 terrorist attacks, the wars in Afghanistan and Iraq, Hurricane Katrina, the Florida recount and other historical events. There is also a replica of the Oval Office, where the Bush met with the students.
Jean Lundin, 65, and her sister, Joyce Richards, 62, emerged in tears from the part of the museum dedicated to the Sept. 11 terrorist attacks.
"It was like it brought it back like it was yesterday, happening all over again," said Richards of Garland.
Lundin, clutching Bush's autobiography as she went through the museum, had traveled to Dallas from her home in Marquette, Mich., so the two could be there on the opening day.
"I just think politically he's exactly consistent with my values," said Lundin, a retired professor who said she used to tell her students that she was Bush's second biggest fan, only behind former first lady Laura Bush.
Kylie Franklin, 12, a 6th grader at Reagan Middle School in Grand Prairie, along with her sister, Makaylin Franklin, a 5th grader at Dickinson Elementary Academy in Grand Prairie, were among the students who met the president.
"That was an amazing experience," Kylie Franklin said.
She said that among questions the students asked Bush was whether he would run again for president if he could. "He said `no,'" said Franklin, who along with her sister has visited all 13 presidential libraries run by the U.S. National Archives and Records Administration.
Larry Touchon, 85, and Yolanda Touchon, 72, of Amarillo, made the visit their honeymoon trip after getting married April 21 in Las Vegas.
"We just wanted to tie this in with our marriage. He's such a great guy," Larry Touchon said as his voice broke, adding, "He saved this country in 9-11, there's no question about it."
Mike Palmer, 45, came from Los Angeles to be in Dallas for the opening. "He's my favorite president, so why not?" he said.
(Copyright 2013 by The Associated Press. All Rights Reserved.)


text:
Click Here To Watch This Video at Men At Play
Gay men in suits. Exclusive videos of gay office sex exposed!
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- Colors
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Your go-to, everyday crash pad.
Black Diamond designed its Drop Zone Crash Pad to go anywhere every day of the week. This mid-sized pad has an extremely durable nylon exterior that prevents tearing from tree branches and scuffing from the rocky ground. Black Diamond added a PU coating to the top for water-resistance and protection from abrasion, and an EPO treatment gives the bottom waterproof protection that also prevents the pad from slipping underneath your feet when you land. The pad's interior has a layer of closed-cell PE foam that dissipates the force of your fall, and another layer of high-compression PU foam keeps the pad sturdy and ready to catch you for many years.
The Drop Zone also features shoulder straps and a waist belt to help you get to your projects with ease, and two handles help your buddies move the pad underneath you while you climb. Its taco-style fold eliminates any dead spaces in order to prevent your ankles from rolling when you land, and the quick-closure elastic mesh flap lets you load the pad up (once it's folded) with your chalk bag, shoes, and maybe some drinks to celebrate your sending successes.
- 1000D nylon exterior with PU coating and EPO treatment
- Closed-cell PE foam (1in) top interior
- High-compression PU foam (2.5in) bottom interior
- Shoulder straps, waist belt, two handles
- Taco-style fold
- Elastic mesh flap goes over the pad's ends when it's folded


text:
I haven't done a lot of Internet shopping, but I know it can be convenient and a real time saver, especially if you know exactly what you want and how much you're willing to pay for it. I also noticed that this year many web merchandisers are offering free shipping, so online prices should be pretty competitive.
Since I seem to be rather behind on my Christmas shopping, I thought maybe I could get back on track by doing some of it online. Silly me.
The first problem I encountered was the enormous amount of time it takes just to find what I'm looking for. There are simply too many sites to check out and each one has literally hundreds of choices.
I found the key is in narrowing my search. For instance if I go to a site like Overstock.com and put in the term "sweaters," I get about two hundred choices. If I narrow it to women's sweaters, I'll still have at least a hundred, but if I include a color, or specify the type, such as cashmere or long-sleeved, I can save myself a lot of clicking and waiting.
Still, it's not a satisfying shopping experience for me. I'm a touchy-feely kind of person. It's hard to know what I'm getting without being able to touch the fabric and check how the garment is made. Somehow it's just not kosher to buy from a picture. I also have issues with color. Is it really going to look the same as the online image? Since it looks completely different depending on which computer I use, how can I know what I'm getting?
Toys are an even bigger problem. It's so hard to picture size from measurements. And how can I know if the sound it makes is cute or annoying, realistic or simply ear-splitting? After half a day of online searching and second guessing, I'm back to in-store shopping, but with a clearer idea of what I'm after and what it should cost.
So, for me at least, online shopping is not as convenient as it's cracked up to be, but it's also not a total waste of time. If it helps me know which merchants have what I'm looking for and who has the best price, that alone can save me a good deal of time and frustration.
I'm just not ready to give up the in-store shopping experience. I want to touch and inspect what I'm buying. I know I'll feel cheated if I'm not there in the store to stumble onto an unadvertised bargain or a gift suggestion I hadn't considered till I saw it.
I'm also not ready to give up enjoying the local mall decorations and the Christmas music and stopping for a hot café mocha in the food court. If the Gen-X crowd wants to do all their shopping online that's fine. But for me, it's just not Christmas till I go ...
"Dashing through the mall, in a one-day buying fray.
O'er the sales we go, spending all the way.
Registers will ring, making funds take flight.
What fun it is to shop and sing a gifting song tonight."
Jingle bells, jingle bells, jingle all the way,
Oh what fun it is to shop, the good old fashioned way."


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What to do if there is an Emergency
How Will I Know If There Is A Chemical Emergency?
If a chemical emergency could affect citizens within Douglas County, Sheriff's dispatchers will activate the Emergency Mass Notification System This is an automated telephone notification network that can ring the telephones of homes and businesses in the immediate danger area, giving pre-recorded instructions about what to do. The network can be activated countywide or within one or more geographic zones, calling thousands of telephones within minutes.
The database contains all listed and unlisted telephone numbers in Douglas County, as well as Voice-over-Internet-Protocol (VOIP) numbers issued by cable companies. It also allows you to sign up and add cell phones, pagers, blackberries, e-mail addresses to your profile so that you can receive notifications on any of these devices.
Do Plants In Douglas County Have Their Own Alarm Systems?
Yes, most plants do, so they can warn their employees and contractors to evacuate the plant or seek safe shelter during a fire or chemical release. Each plant's alarm sounds are purposely different, so employees at neighboring plants will know what type of incident is occurring where. Most plants test their alarm systems at least once a week. It is important to note that these alarms do not notify citizens in the surrounding community.
What Should I Do During A Chemical Emergency?
Industry officials are responsible for notifying Dispatch Centers about any chemical release that may affect the community. Douglas County officials are responsible for warning nearby homes, schools and businesses and recommending appropriate protective actions. Protective actions include either sheltering in place or evacuating. You are responsible for following those instructions to protect yourself and your family.
County officials may recommend that you "shelter in place" until the chemical release is stopped and winds have dissipated any vapors. Here's how to Shelter In Place:
Take yourself and anyone near you inside an enclosed structure, whether it's a house, business, garage, or vehicle. If you know of an invalid or unattended child in your neighborhood, call them and tell them to remain indoors. Keep any pets inside also.Close all doors, windows, and other sources of outside air. Turn off air conditioning or heating systems, and close the fireplace damper to keep chemical vapors from entering. Ceiling fans or rotary fans inside the building can be safely used to keep cool. Gather a portable radio, flashlight, and extra batteries.Move into an interior room, preferably a room with no windows. From the inside of that room, cover any outside doors, windows, ceiling vents, and other sources of outside air with plastic sheeting and masking tape. Place a wet towel or sheet along the bottom of the door sill. If you smell any unusual odor or have trouble breathing, you should sit down, cover your nose and mouth with a damp washcloth, then take slow, shallow breaths and try to stay calm.
The metro area broadcasts emergency information on radio station at 850 on the AM dial. During non-emergency periods, AM 850 airs community and school district news, and re-broadcasts reports from the National Weather Service. During a chemical release, AM 850 will continuously repeat instructions about how to Shelter In Place and provide more information as it's available.Emergency Alert System (EAS) messages are also broadcast on NOAA Weather Radios and on regular and cable television.
County officials may try to telephone your home or business using the county's computerized telephone notification system. Do not call police, fire, or 9-1-1 unless you are reporting a police, fire or medical emergency at your location. Overloaded telephone circuits may keep actual emergency calls from getting through.
Should I Try To Evacuate?
Evacuation may be an appropriate precaution during a flood or hurricane, but you should NOT attempt an evacuation during a chemical emergency unless specifically ordered by officials. Leaving your home or business may expose you to more chemical vapors, especially if you travel toward the leak or through the toxic cloud as it drifts downwind.
What If I Can't Find Shelter?
Studies indicate that taking shelter is the best response to a chemical release. Even a poorly sealed building or vehicle provides some protection against chemical vapors. If you are inside a vehicle, close your vehicle's doors and windows, and turn off the vehicle's air conditioning and ventilation system. Turn on your car radio to AM 850 for more information.
If you can't get inside, move in a crosswind direction, so the wind is blowing from left to right, or right to left, but NOT directly into your face or from behind you. You can see what direction the wind is blowing by observing nearby trees, flags, or clouds in the sky.
What If My Children Are In School?
The Douglas County School District has installed emergency notification radios (NOAA) in the School District Administration Building, all school buildings, and all county buildings. In addition, the schools have been equipped with School Safe radios, allowing school officials the ability to communicate directly with first responders. This radio system can be instantly activated by Sheriff's Dispatchers, so the administrative staff and teachers at your children's school will be notified in the event of a chemical release. They have been trained how to protect your children and will shelter in place until the emergency is over.
Please do NOT call the school and tie up telephone lines needed by school staff to communicate with district officials. If you go to the school, you are putting yourself and all the other children in danger if school officials open the doors to let you remove your children from their safe shelter. In fact, you and your children could be overcome by vapors while traveling to or from the school. Instead, listen to AM 850 for parent information from school officials.
How Will I Know When The Emergency Is Over?
Stay inside, sheltered in place, until you hear the "All Clear" message from county officials over the telephone notification system, or AM 850, or by police loudspeakers.
After the All Clear signal has been given, open all doors and windows, turn on your air conditioning or heating system, then go outside to let the building "air out" for 15-30 minutes before you re-enter.


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WORCESTER, Mass. - On Saturday, April 28, the Holy Cross baseball program will host "Pediatric Cancer Awareness Day" at Fitton Field during its game versus Army at 2:00 p.m. The game, sponsored by Holy Cross' Cures for Kids and in conjunction with Sherry's House in Worcester, Mass., will feature a ceremonial first pitch thrown out by Christopher Poplawski, a 10-year old boy who was diagnosed with a form of leukemia at age four.
The Holy Cross baseball team has visited Sherry's House and Christopher for over two years. Sherry's House is a place where kids and their families from all over New England can come and receive the support and encouragement they need to fight childhood cancer, together. It proudly serves as Command Central in caring for over 500 existing families, providing them with the social, emotional, logistical, educational, and financial support they need, day in and day out, to overcome childhood cancer.
Cures for Kids, a Holy Cross student group, will be on-site during the game distributing yellow ribbons to all fans in attendance for pediatric cancer awareness. They will also be selling refreshments and holding a raffle for a Holy Cross athletics gift package. All money collected will be donated to Sherry's House.
For more information on Sherry's House, visit http://www.whyme.org/. And to learn more about Chris and his story, please read here.


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Local animal rescue holds fundraising event in Bakersfield Thursday night
Proceeds go to help save homeless animals
BAKERSFIELD, Calif. - Local charity, Alpha Canine Sanctuary, is holding a fundraising event in Bakersfield Thursday night.
From 5 P.M. until 8 P.M., head over to Imbibe Wine and Spirits. For a $25.00 donation, you'll get complimentary wine and appetizers, along with entertainment and prizes.
Alpha dogs will also be on site to perform obedience demonstrations.
The proceeds raised will help save and rescue homeless dogs as well as spay and neuter dogs owned by low (or no) income families.
Imbibe Wine and Spirits is located at 4140 Truxtun Avenue. Attendees must be 21 or over.


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- Caged
- (2011)
Runtime: 105 min
Rating: 5.1
Budget: 850000$
Status: Released
Tagline: Caged
"Caged" is a new drama and thriller movie by Stephan Brenninkmeijer that was released in 2011. The budget of film reckons 850000$.
After years of suppressing her desires, Stella finds she can no longer ignore her deep-rooted longings. Breaking out of her cage and starting a secret double-life, Stella transforms into a "unicorn", a nickname for single women who indulge in a hedonistic lifestyle, visiting sex clubs and erotic parties, and flourishing with all the new attention. Even as her husband uncovers his Stella's secret life, he can't do much more than give her the freedom that she obviously needs, in the hope it's all just a phase. Then one day she finds herself lying unconscious in a basement cell, with no idea how she arrived there. Days go by when an other woman is brought into her cell. Christine, a woman about the same age. In the following days they reveal their life stories to one other. Christine is convinced that the reason for their captivity lies in Stella's lifestyle.
Best actors like Babette Holtmann, Chantal Demming and Joep Sertons starred in Caged.
|Images ❖
|Cast ❖
Babette Holtmann
Chantal Demming
Joep Sertons


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Belton (March 13, 2012) -- The University of Mary Hardin-Baylor softball team used different methods in the two games, but the results were the same as the Cru swept a doubleheader from Concordia Texas for the second straight day on Tuesday. UMHB took game one 11-2 before winning the second game 3-0 to capture all four games of the weekend series.
UMHB grabbed the lead with a four-run second inning in the first game and never looked back on the way to an 11-2 victory. Leanne Hinojosa's three-run double was the biggest hit in the second for the Cru. The Tornados cut the gap to 4-2 in the third. But UMHB answered with Caitlin Bollier's RBI double and Hannah White's RBI single in the fourth. The Cru added single runs in the fifth and sixth before putting it out of reach with three more in the seventh. Bollier's two-run double did most of the damage in the final scoring frame. Ariel Kemmerer tossed a complete-game, three-hitter to improve to 2-1. She did not allow an earned run. Bollier, White and Kaysie Creech had two hits apiece to lead a 13-hit Cru offensive attack.
UMHB scored three late runs to break up a pitcher's duel in a 3-0 game two win. Caitlin Wells singled home a fifth-inning run for the Cru and Camryn Bintz doubled home two more in the sixth to give UMHB a 3-0 lead. That was more than enough offense for Cru hurler Rebekah Ragsdale. Ragsdale scattered four hits and struck out three to move to 4-3 on the year. White had two of UMHB's nine hits in the victory.
The Cru is now 8-7 overall and 4-0 in American Southwest Conference West Division play on the season. UMHB will return to action with a four-game series at Howard Payne this weekend in Brownwood. Concordia falls to 6-8 overall and 0-4 in the ASC West on the year with the two losses.
The University of Mary Hardin-Baylor baseball team could not hold two early lead as the Cru dropped a 9-6 decision to U.T.-Tyler in non-conference action Tuesday in Belton. UMHB falls to 10-8 on the season with the loss. The Patriots improve to 15-4 on the year with the victory.
The Patriots bunched four singles together, including three infield hits to grab a 2-0 lead in the top of the first inning. UMHB answered with three in the bottom of the first on RBI singles from Seth Mogavero, Braden Embry and Zach Young. Chris Florack walked, stole second and third and then scored on a wild pitch to make it 4-2 Cru in the second. Tyler tied the game with solo home runs in the third and fourth innings. UMHB retook the lead 5-4 on Seth Lynn's RBI groundout in the bottom of the fourth. The Patriots tied the game and then took a 7-5 lead on Aaron McCain's two-run single in the top of the sixth. Florack tripled and scored on Embry's sacrifice fly in the seventh to cut it to 7-6, but the Patriots added some breathing room with two runs in the top of the ninth. Derek Miller set down UMHB in the ninth to clinch the win for U.T.-Tyler.
Kreece Cooper took the loss for the Cru to drop to 0-1 on the season. Tye Weber earned the win for U.T.-Tyler to move to 1-0 and Miller notched his fourth save of the year. Mogavero and Chris Joshlin had two hits apiece for UMHB. Isaac Tijerina had for hits and McCain added two hits and three RBI for the Patriots.
The UMHB baseball team will continue its home stand with a three-game American Southwest Conference West Division series against Howard Payne University this weekend. The two teams will open the series with a 7:00 PM single game Friday night before closing out the weekend with a 1:00 PM doubleheader on Saturday.


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Eminence Organics Gingko Masque 2 oz/60 ml | 2 oz / 60 ml
What it DoesGingko Extract aids in reducing free radicals that damage skin. Corn Germ Oil contains Coenzyme Q10 to nourish the skin. Lavender Oil stimulates circulation and calms and heals Biocomplex goves a large does of antioxidants to eliminate free radical damage.
Who should use it
Appropriate for Dry and Aging Skin Types
How It Feels
How to Use It
Apply a thin layer of masque with fingertips to cleansed skin, avoiding the eye area. Leave on for 5 minutes or longer (it is recommended to place wet gauze or cotton strips over top). It is possible to use as a massage agent by diluting the product and periodically adding small amounts of tea, juice or water. Remove with a damp face cloth.


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Posted at: 07/02/2013 9:00 AM
By: Associated Press
Weather officials in Tornado Alley have a beef with Superman.
In "Man of Steel," Clark Kent's dad sees a tornado coming as he's driving. Kevin Costner's character urges his family and other people on the road to take shelter under a highway overpass. The National Weather Service office in Dodge City, Kansas, has posted message on its website saying, "an overpass may be one of the worst places to seek shelter."
The Wichita Eagle notes Warner Bros. has released a statement saying the film is a work of fiction and is not intended to serve as emergency preparedness advice.


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Efrain Toro
Wavedrums - Korg - NAMM 2010
Efrain Toro...
Efrain Toro is recognized as one of the finest and most complete all round percussionists in the world. Efrain began his musical career in his native Puerto Rico. Although he started on the drum kit, he very soon began to work with timbales, congas, and a wide variety of other instruments.
At the age of 21 Efrain moved to Boston to attend New England Conservatory. Here he studied drum set with much acclaimed drummer Alan Dawson. Efrain relocated to Los Angeles in 1979.
Working extensively in Spain from 1996, Efrain has recorded and performed with some of the top names in Spain: from Pop (Rosana, Pedro Guerra, Ismael Serrano, Ketama) and Jazz (Guillermo MacGill, Chano Domingues, Javier Colina, Tino Di Geraldo, Pedro Rui Blas) to Flamenco (Eva La Yerbabuena, El Pele, Juan Carlos Romero in La Bienal Del Flamenco in Seville).
A versatile performer, Efrain plays every style from rock & roll to classical. He has played on many film and television scores, commercial jingles, as well as performing and recording with such diverse artists as Stan Getz, George Benson, Los Lobos, Chicago, Kiss, Placido Domingo, John Klemmer and many others.
Efrain has taught at MI's Percussion Institute for over 16 years. Having worked for 6 years as a clinician, product specialist and designer for the Roland Corporation, Efrain is considered an expert in MIDI technology. He has also taught at the California Institute of the Arts and at UCLA Extension Department.
When recently participating in the Percussive Arts Society International Conference, for the eighth time, he promoted and explained his "RHYTHM" theory and his 16 books on the matter.
While living in Cape Town, South Africa (2000 to 2004), Efrain taught at Cape Town University as well as in his own school and also held numerous workshops. In addition to this he has recently completed a series of nine books for beginners, intermediate and advance players, on hand drumming, wood box and drum set technique. Currently in progress are books on theory of native music's of the world.
Recently Efrain taught a semester at the Conservatory of Music of Puerto Rico while playing and recording with the top musicians, and he participated in Gilberto Santarosa's Grammy award wining CD in 2006 and his two new albums in 2007 and 2008. Now on Jose Lugo's GUASABARA latin big band CD and DVD.
Source: zildjian.com
...at the KoSA International Workshop 2000
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Below is the poem entitled MY TRANQUILITY which was written by poet
Madeleine. Please feel free to comment on this poem. However, please remember, PoetrySoup is a place of encouragement and growth.
Read Poems by
Shirley Madeleine
I've been around the world
I've looked in every corner
I've walked night and day
But still I couldn't find
I ask everybody around
But nobody knew
I've been through impossible
But still I couldn't find
After such a hard task
I've succeed
I was able to find...
...my tranquility
I was living so happy
Without worries
I said, nobody will take my treasure
That I have discover away
A selfishness
That I do not know
Where he came from
Has taken it away
And now just my tears are pouring
I pretend that everything is fine
But in my heart is filling with anger
And the same time terrified
I am asking myself
How I am going to cope
Without my treasure
That has taken more than
A million year, for me to find


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It's one of the most important jobs imaginable. A school bus driver is responsible for seeing that his or her passengers get to their locations safe and sound.
Children get on school buses every day and are delivered to their destinations without incident. But when something does go wrong, as it did recently for the passengers of bus 88 from David Crockett High School, it makes us all shudder.
Last month's school bus accident on a narrow road in rural Washington County has renewed calls to buckle up students. It also calls attention to the need to hire and keep the best bus drivers that we can.
As we've said in this space many times before, finding and keeping the right individuals behind the wheel is not always easy. Low pay and poor benefits may be part of the problem. If that is indeed the case, it's time for school officials, parents and taxpayers to decide what price they are willing to place on the safety of schoolchildren.
Salary has been a great stumbling block to hiring dependable drivers, but low pay is not the only factor. Many would-be applicants for the job say they don't want to deal with the disciplinary problems that plague school systems both large and small.
Driving a school bus is more than shifting gears and opening a door at the stops. Drivers are responsible for the safety of every passenger on that bus. As we've noted here many times before, school bus drivers carry precious cargo. Parents, school administrators and taxpayers should insist that the most qualified drivers are hired to transport that cargo.


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Read & React
A place to share your thoughts, criticisms and comments.
Monthly Archive for January, 2007
Leaving a car unattended gets you a ticket?
According to New York State Vehicle and Traffic Law 1210, "No person driving or in charge of a motor vehicle shall permit it to stand unattended without first stopping the engine, locking the ignition, removing the key from the vehicle, and effectively setting the brake." Read story. Did you know you can get ticketed for […] [Read More]
Black Americans
From reporter Jordan Carleo-Evangelist: Black Americans are significantly more likely to survive in prison than in their own neighborhoods, according to a new study released earlier this month. The difference, researchers say, is murder. Â Read the story and share your thoughts. [Read More]
President's State of the Union address
From David Espo at AP: President Bush wants Congress to give his controversial strategy for Iraq a chance to work. Defiant Democrats say they'll give it a vote, and use their newly won control over the House and Senate to oppose the deployment of an additional 21,500 troops. President Bush wants Congress to give his […] [Read More]
Student ethics
Do you think honor codes deter students from cheating? [Read More]
Picking a comptroller
Eighteen candidates are vying for the job of state comptroller, including five assemblymen and a state senator. They'll meet before a special panel next week to winnow the field to five finalists, and the Legislature will pick Alan Hevesi's successor. Read story. Is this the best way to pick a comptroller? [Read More]
Abortion protest follow-up
Do you think agree with the settlement by school officials in Clifton Park that allows an eighth-grade student to wear a T-shirt protesting arbortion to mark the 34th anniversary of Roe vs. Wade? [Read More]
Strevell case
Do you think public officials should be free — short of committing a crime — to put friends and relatives in government jobs? [Read More]
Show More


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An Enduring Way to Honor a Loved One
Endowing a scholarship is a wonderful way to ensure that qualified SUNY Optometry students with financial need and academic merit will be able to complete their education. It is also a wonderful way to honor or remember a loved one.
Dr. Richard Soden, Vice President for Clinical Affairs, has generously provided a $25,000 endowed scholarship in memory of his aunt and uncle, Samuel and Mary Gurkin.
Samuel was a violinist with the New York City Opera and Mary was an English teacher in Manhattan. "I didn't want their names to be forgotten", said Dr. Soden. "Endowing a scholarship in memory of Sam and Mary, who had no children, will ensure that their names live on. Being able to do that for them, while supporting students at the College of Optometry helped me satisfy two very important goals.", he added.
The endowed Samuel and Mary Gurkin Memorial Scholarship will provide funds annually to deserving students into the future. The gift will be made over five years and, in the end, only the interest is awarded as a scholarship. The principal remains untouched in perpetuity. Named scholarships will be listed in the College publications. The gift is also tax-deductible.
To discuss how you may create an endowed fund, or provide another type of gift to the Vision & the Promise Campaign, please feel free to contact Ms. Ann Warwick or Ms. Pam Lederman in the Office of Institutional Advancement on the 18th floor or at ext. 5600.