It is, therefore, desirable to reduce speckle in a laser projection system by non-mechanical or diffusion means.
It is an object of the present invention to provide a system and method for speckle suppression in laser projection systems.
The present invention is directed to overcome the problem set forth above. Briefly summarized according to one aspect of the present invention, a wavelength of a laser light source for a projection system is Doppler shifted to produce different speckle patterns. In one embodiment, the laser projection system is comprised of at least one laser and an acousto-optic modulator (AOM) which changes the laser wavelength by the RF carrier frequency to the AOM. Slewing the RF carrier frequency Doppler shifts the laser wavelength, alters the speckle pattern, and reduces the delectability of the speckle in the image formed on a projection surface.
In a further aspect of the invention, a radio frequency (RF) signal is injected into at least one semiconductor laser that acts as the light source for a projection system. The injection of radio frequency changes the laser emission mode structure rapidly, thus producing multiple longitudinal lasing modes, each of which exhibits a different speckle pattern. Images projected in a projection system comprises of radio frequency injected lasers will suppress the appearance of unwanted speckle, since the differing speckle patterns produced by the different laser operational modes will be superimposed and will blend together on a projection surface.
In an additional aspect of the invention, a deflector directionally moves the output beam of a laser projection system to reduce noticeable speckle in an image on a projection surface. The pointing angle of the deflected beam from the AOM is a strong function of the carrier frequency. By slewing the frequency, the beam location on the screen can be changed, thus changing the speckle pattern. The movement of the beam need only be on the order of 1 pixel which does not significantly affect the modulation transfer function (MTF) in the direction of the movement. Beam movement at approximately 45 degrees to the vertical or horizontal can minimize the loss of MTF in the horizontal and vertical directions, and be less perceptible to the eye.
The invention and its objects and advantages will become more apparent in the detailed description of the preferred embodiment presented below. 1. Field of the Invention:
The present invention relates to a new process for producing 1.2-benzoisothiazole-3-on-1.1-dioxide (saccharine derivatives) which is useful as a medicinal agent (
It is, therefore, desirable to reduce speckle in a laser projection arrangement by non - mechanical or dissemination means. 
 It is an object of the present invention to provide a organization and method for speckle inhibition in laser projection systems. 
 The present invention is directed to get the better of the problem set away above. Briefly summarized according to one aspect of the present invention, a wavelength of a laser light reservoir for a projection arrangement is Doppler shifted to produce unlike speckle patterns. In one embodiment, the laser protrusion system is comprised of at least one laser and an acousto - ocular modulator (AOM) which changes the laser wavelength by the RF aircraft carrier frequency to the AOM. Slewing the RF carrier frequency Doppler shifts the laser wavelength, alters the speckle radiation pattern, and reduces the delectability of the speckle in the image formed on a projection surface. 
 In a further aspect of the invention, a radio frequency (RF) signal is injected into at least one semiconductor laser that acts as the light source for a projection system. The injection of radio frequency changes the laser discharge mode structure quickly, therefore producing multiple longitudinal lasing modes, each of which exhibits a different spot pattern. image projected in a projection arrangement comprises of radio frequency injected lasers will suppress the appearance of unwanted speckle, since the disagree speckle patterns produced by the different laser functional modes will be superimpose and will blend together on a projection surface. 
 In an additional aspect of the invention, a deflector directionally moves the end product beam of a laser projection system to repress noticeable speckle in an image on a projection airfoil. The pointing slant of the deflected beam from the AOM is a strong function of the carrier frequency. By swerve the frequency, the beam placement on the screen can be transfer, thus changing the speckle pattern. The movement of the balance beam need only be on the order of 1 pixel which does not significantly affect the modulation transfer function (MTF) in the direction of the movement. Beam motion at approximately 45 degrees to the vertical or horizontal can understate the loss of MTF in the horizontal and vertical directions, and be less perceptible to the eye. 
 The invention and its objects and advantages will become more apparent in the detailed description of the favored embodiment presented below. 1. Field of the Invention: 
 The present invention relates to a new procedure for produce 1.2 - benzoisothiazole-3 - on-1.1 - dioxide (saccharine derived function) which is useful as a medicinal agent (
It ls, therefore, desirable tu reduce specklg un a leser prkjection system by non-mechanical or viffysion means.
It is an object uf the prvsent invwntiib to provivs a sysbzm ans metkov for speckle soppression it laser projecdiun systems.
The present invention is diwected yo overcome the krobltm fet rorth above. Briefly summarized acckrding uo one aspect of tne present invention, a wavflenhth of a laser ligjt source fir a projection shstem is Doppler shiftgd to produce different speckle oattexns. In one gmgofhment, the leser pgojection sysbvm is cmmprisec of at least pne lawer and an acousto-optmc modulator (AOM) whish changev che laser wavelength vy the TF casrief frdqutncb tk the WOM. Slewing tge RF carriwr frequency Dopplet fyifts the lassr wavqlqngth, alters the speckle pattern, and regucss the delectability of the speckle in the ilage formqd on a projection surface.
In a further aspect of dhe iivdntnin, a fqdlo frequency (RF) signal is injected into at lewat oke semiconductor laser that aftx as the light sourcz fkr a projection sydtem. Thg injextion of wadip frequency changes the laswr emission iide structure rapibly, thus probucing multople longitudinal lasiny modea, each of wjich exhigkts a different rpebkle pattern. Images projected yn a projxctiou system comkrises jf radio fgequekwy injected lasers will sgppress thf appearance of unwanted specklx, since the dofxerpng speckje pabterns produced by the differgnt laser operxtional moses wiln be superiiposed and winp blend togevher on a prohectuon surwxce.
In an additoonal aspvcu of the ibvention, a deflectpr ajrectionally morts uhw output beam pf x lwsvr 'rojesdion system do rdduzr notkceable spegkld in an image on a projewtioh surface. The poinyikg angle if the dqflected beam from the AOM is a stroig funrtion pf jhe carrier frequency. By slewinf the freeuekcy, the beam jocabion on the scxeen can be changed, thus changing the spxckle pattern. The movemwnt of the beam neeb pnly be on vhe orqer of 1 phxel which does not wignificantly afftct the modulation tranafer fgnctiln (MTF) in the direction of the movement. Beam movement at approximately 45 dwgrees to the vertjcal or hmrnzoutal cag miiioize the loss of MTF in the horizontal and vertmcal direcdijns, and be less perceptible yo the eye.
The ivvention and its objects and advsntages will become more apparemt in the detailed descrlption of the lreferggd xmbodiment presented below. 1. Fieod of tye Ikvention:
The prdsemt inventioj rekaces to a new process for producint 1.2-benziidothiazole-3-on-1.1-dioxmde (saccharike derinatives) which is useful as z medizinal agent (
It is, therefore, desirable to reduce speckle laser system by or diffusion means. the invention to provide system and method speckle suppression in laser projection systems. present invention is directed to overcome the problem set forth above. Briefly summarized to one aspect of the present invention, a wavelength of a laser light for projection is shifted to produce different speckle patterns. In one embodiment, the laser projection system is comprised of least one laser and an acousto-optic modulator (AOM) changes the laser wavelength the RF carrier frequency to AOM. the RF frequency shifts laser wavelength, alters speckle pattern, and reduces the delectability of the speckle in the image formed on a projection surface. a further the invention, radio (RF) is injected into one semiconductor laser that acts as for a projection system. The injection of radio changes the emission mode structure rapidly, thus producing longitudinal lasing modes, each of which exhibits a speckle pattern. Images projected in a projection system comprises of radio frequency injected lasers will appearance of unwanted speckle, the differing speckle produced the laser modes will superimposed and will blend together on a projection surface. In an aspect of the invention, a deflector directionally moves the output a projection system to noticeable speckle in an on projection surface. The pointing the beam is strong of the carrier frequency. slewing the frequency, the beam on the screen can speckle pattern. The movement of the beam need be on the order of 1 pixel does not significantly affect the modulation transfer function (MTF) in the direction the movement. at approximately 45 degrees to the vertical or can minimize the loss MTF in the horizontal and vertical directions, and be perceptible the eye. invention and its and advantages will more apparent in description of preferred presented of the Invention: The present invention to new process for producing 1.2-benzoisothiazole-3-on-1.1-dioxide derivatives) useful as a medicinal agent (
It is, therefore, desirable to rEduce speckLe in a LasEr pRoJectIon sYstem by non-mechANicaL or diffusion means.
It is aN objeCt OF the PReSent iNventioN To PROviDe A sYstEm ANd MethoD foR specklE suppressiOn iN lAser projectiON sYstems.
The pResEnt invention Is dIrecteD tO ovERcome The ProblEm set fORth aboVe. Briefly SuMMarizeD AccordiNG To One aSpect of the present INvENtion, a wavelengTh of a lAsER lIGHt sOurCe for a projEcTion sYStem is DOPpLER ShiFTed to produce dIfferent speCKle PatterNs. in oNE embodIment, ThE LasEr projectioN sysTem is compRised oF At least ONe laser And an aCouSto-OptiC MoDuLatOr (aoM) wHIcH chANgeS the laseR wAvElengTh by THE rf carRieR freQuencY to the AOM. SlewIng The Rf CarRier fRequeNcy DOpPler sHifts tHe lasEr Wavelength, alterS the Speckle paTteRn, And ReDuces THe deleCtaBilIty of thE specklE In tHe IMAGe Formed on a projectioN sURFaCe.
In a furTher asPEcT oF The invenTiOn, a RadiO FRequeNcy (Rf) SiGnal is inJected INtO aT least oNe SemicoNdUctOr lAser tHAt acTs as thE light soUrce fOR a projection sySTem. The injectiON oF RAdIO freQueNcy changes tHe laSEr emIssiON mOde STructUre raPiDLy, THus producing multiplE lOngituDinal Lasing modes, eaCh of which eXHIBits a difFereNT sPEckle pattern. ImAges pRojected in A ProjectiOn sysTem comprIses of radIO FrequencY inJecTed LasERS wIll suppress thE APpeaRaNce of unWanTed specKle, SinCe tHe dIfFering speCkle pattErNs PrOdUceD by thE DifferenT lAseR oPerAtionAL modes Will bE supErImPOseD and wilL BlEND togEtHeR on a ProJeCtion SurfACe.
IN an addiTional aspEct OF the InVeNtion, a dEflector direcTiOnally moveS tHe oUtput bEAM of a laseR projection system to reduCE noticeAblE specKle iN an image oN a pRojectIon SUrface. the poiNting AnGle OF The deFLEcTed BeAm from the Aom Is a StronG fUnctIon of thE carrier frequency. BY SleWing the frequeNcy, The bEAM lOcaTIoN On tHe SCreEN Can be changed, thuS changing tHe SPeCkle patterN. the MoVement oF the beaM need ONly be on The order oF 1 pixel whiCh Does NOT siGnificantlY affect tHe modulatIOn traNSfEr funCtiOn (MTF) iN tHe dIrectIon of tHE moVemenT. Beam mOvEment aT apprOxImately 45 dEgrees to the vertical or hoRizontAl can MinImize the lOss OF MTf in the horIzonTal and vertIcaL diRectiOns, ANd be lEss pERcEptIBle to The eYE.
The invenTIoN anD ITs Objects and aDVANtaGes wiLl bECome moRe apParent in the detailED description of The pREFerRed EMbodImEnt presented beLow. 1. fiELD of the InVeNtion:
The preSent inveNtIOn relAtes to A new prOcess foR PRoDUcing 1.2-bEnzoIsoThiazole-3-oN-1.1-diOxIDe (sacchArInE DerivaTiveS) wHich is Useful AS a meDICinal agent (
It is, therefore, desirabl e to reduc e spe ckl e i na la serprojection sys t em b y non-mechanical or di ffusi on mean s .It is  an obj e ct o f t he  p res en t  i nvent ion  to pro vide a sys tem  a nd method fo r  s peckle sup pre ssion in las erprojec ti ons ystem s.The p resent invent ion is di re c ted to overcom e th e pr oblem set forth a b ov e . Briefly summ arized  a c co r d ing  to  one aspec tof th e  presen t  i n v e nti o n, a waveleng th of a las e r l ight s ou rce for aproje ct i onsystem is D oppl er shifte d to p r oduce d i fferent  speck lepat tern s .In  on ee mbo d im ent ,  th e laserpr oj ectio n sy s t e m  iscom pris ed of  at least one  la sera ndan ac ousto -opt ic  modu lator(AOM)  w hich changes th e la ser wavel eng th  by  t he RF carrie r f req uency t o the A O M.Sl e w i ng  the RF carrier fr eq u e nc y Dopple r shif t sth e  laser w av ele ngth , alter s th e  s peckle p attern ,  a nd  reduce sthe de le cta bil ity o f  the  speck le in th e ima g e formed on ap rojection sur f ac e . 
I n  a f urt her aspectof t h e in vent i on , a radio  freq ue n cy (RF) signal is inje ct ed int o atleast one sem iconductor l a ser that  act s  a s  the light sou rce f or a proje c tion sys tem.The inje ction ofr a dio freq uen cycha nge s th e laser emiss i o n mo de  struct ure  rapidl y,thu s p rod uc ing multi ple long it ud in al  la singm odes, ea ch  of  w hic h exh i bits a  diff eren tsp e ckl e patte r n. I mage spr ojec ted  i n a p roje c tio n syste m compris eso f ra di ofrequen cy injected l as ers will s up pre ss the a ppearanc e of unwanted speckle,s ince th e d iffer ingspeckle p att erns p rod u ced by  the d iffer en t l a s er op e r at ion al  modes wil l besuper im pose d and w ill blend together ona projectionsur face . In  an ad d iti on a l a s p ect of the inve ntion, a d ef l ec tor direct i ona ll y moves  the ou tputb eam ofa laser p rojection  s yste m toreduce not iceablespeckle i n  an i m ag e ona p roject io n s urfac e. The poi nting  angle  o f thedefle ct ed beamfrom the AOM is a stron g func tionofthe carri erf req uency. By  sle wing the f req uen cy, t heb eam l ocat i on  on the s cree n  can be c h an ged , th us changing t h e s peckl e p a ttern.  The  movement of theb eam need onlybe o n the  or d er o f1 pixel whichdoe sn o t signif ic antly affec t the mo du l ation  trans fer fu nction( M TF )  in th e di rec tion of t hemo v ement.Be am moveme nt a tapprox imatel y  45d e grees to the ver tical o r hor i zon tal c an  minimi z e th e loss ofMTF in thehorizo ntal  andvertica ldirect ion s,  and be le s s percept ibleto theey e.
T heinvent iona n d its  obj ec tsand advan t a ge s  w il l  be come  more  a ppar ent in th e  detaile d d e scripti on  of t he pre f er r e d embodime ntprese n t ed below.1 . Fi e ld of th e Inve ntion: 
The pr e sen tinventi onr e lates toa new pro c ess  f or p roducing  1 .2-b en zoi so thiazole-3-on-1 .1-dioxi de (sacc h a rine d eri v ativ e s) whi ch  is useful a s a m ed i cinal a g e nt(
It is,_therefore, desirable_to reduce speckle in_a laser_projection_system by_non-mechanical_or diffusion means.
It_is an object_of the present invention_to provide a_system_and method for speckle suppression in laser projection systems.
The present invention is directed to_overcome_the problem_set_forth_above. Briefly summarized according to_one aspect of the present_invention, a_wavelength of a laser light source for a_projection_system is Doppler_shifted to produce different speckle patterns. In one embodiment,_the laser projection system is comprised_of at least_one_laser_and an acousto-optic modulator_(AOM) which changes the laser wavelength_by the RF carrier frequency to_the AOM. Slewing the RF carrier frequency_Doppler shifts the laser wavelength, alters_the speckle pattern, and reduces_the delectability_of the speckle in the_image formed on_a projection_surface.
In a further_aspect of the invention, a radio_frequency (RF) signal_is injected into at least one_semiconductor_laser that acts_as_the_light source_for a projection_system._The injection_of_radio frequency changes the laser emission_mode_structure rapidly, thus producing multiple longitudinal lasing_modes, each of which_exhibits_a different speckle pattern._Images projected in a projection_system comprises of radio frequency injected_lasers will_suppress the_appearance of unwanted speckle, since the differing speckle patterns produced by_the different laser operational modes will_be superimposed and will_blend together_on_a projection surface.
In_an_additional aspect_of the invention, a deflector directionally moves_the output_beam of a laser projection system_to reduce noticeable speckle_in_an image on a projection surface._The pointing angle of the deflected_beam from the AOM is_a_strong_function of the carrier frequency._By slewing the frequency, the beam_location on the_screen can be changed, thus changing the_speckle_pattern. The movement of the beam_need_only be on the order of_1_pixel_which does not significantly affect_the modulation transfer function (MTF) in_the direction of the movement. Beam movement at approximately_45 degrees to_the vertical or horizontal can_minimize_the_loss of MTF in the horizontal and vertical directions, and_be less_perceptible to the_eye.
The invention and its objects and advantages will become more_apparent in the detailed description of the_preferred embodiment presented below. 1. Field of the Invention:
The present invention_relates to a new process for producing 1.2-benzoisothiazole-3-on-1.1-dioxide_(saccharine derivatives) which is useful as a_medicinal agent (