/reading beams each having different wavelength are used, wherein
the filter layer exhibits a relatively high absorption for the reading/recording beam used for its closest information-storing layer on the side of the light incidence and a relatively low absorption for the reading/recording beam used for its closest information-storing layer on the side of the light exit.
(3) The optical information medium according to the above (2) wherein said filters exhibits an absorption for the reading/recording beam used for its closest information-storing layer on the side of the light incidence of 80% or more and an absorption for the reading/recording beam used for its closest information-storing layer on the side of the light exit of 20% or lower.
(4) The optical information medium according to any one of the above (1) to (3) wherein at least one of said filter layers is a layer formed by UV curing a composition containing a UV-curable composition and a photopolymerization initiator.
(5) The optical information medium according to any one of the above (1) to (4) wherein at least one of said filter layers is a layer containing a dye. 1. Field of the Invention
The present invention relates to an impact absorbing unit for a vehicle, and more particularly to an impact absorbing unit for a vehicle having a columnar piece of wood and a metallic housing covering the lateral faces of the wood. This impact absorbing unit is typically subjected to an axial compressive force due to the impact in the event of a traffic collision.
2. Description of the Related Art
For example, Japanese Laid-open Patent Application Publication No. 2001-182769 discloses art relating to the impact absorbing unit mentioned above. The impact absorbing unit is subjected to a compressive force that is caused by an impact. According to the publication, a piece of wood fitted in an aluminum hollow square tube with a small gap can reduce fluctuation of the compressive force (or the resistive force during the deformation) to provide improved impact-energy absorption capacity. Furthermore, matching the direction of the wood grain to the axis of the housing can provide an increase in the amount of impact energy absorbed. Ordinarily, web analytics depends on cookie record identifiers placed by vendors in consumer devices and/or consumer registration information maintained by the vendor in order to track certain activities of a particular consumer across a plurality of interactive visits. Nowadays, if a consumer deletes the cookie in her computer, there may be no practical means
/reading beams each having different wavelength are used, wherein 
 the filter level show a relatively high absorption for the interpretation / recording balance beam used for its closest data - storing layer on the side of the unaccented incidence and a relatively low absorption for the recitation / recording beam used for its cheeseparing data - storing layer on the slope of the light exit. 
 (3) The ocular information medium according to the above (2) wherein read filters exhibits an absorption for the reading / recording radio beam used for its closest information - storing layer on the slope of the light incidence of 80% or more and an absorption for the reading / recording beam used for its closest information - storing layer on the side of the light exit of 20% or lower. 
 (4) The optical information medium according to any one of the above (1) to (3) wherein at least one of say filter layers is a layer form by UV curing a composition containing a ultraviolet - curable composition and a photopolymerization instigator. 
 (5) The optical information medium harmonize to any one of the above (1) to (4) wherein at least one of said filter layers is a layer containing a dye. 1. Field of the Invention 
 The present invention relates to an impact absorbing unit for a vehicle, and more particularly to an impingement absorbing unit of measurement for a vehicle having a columnar piece of wood and a metallic caparison covering the lateral faces of the wood. This impact absorbing unit is typically subjected to an axial compressive force due to the shock in the event of a dealings collision. 
 2. Description of the Related Art 
 For example, Japanese Laid - open Patent Application Publication No. 2001 - 182769 discloses art relating to the impingement absorbing unit of measurement mentioned above. The shock absorbing unit is subjected to a compressive force that is caused by an impact. accord to the publication, a piece of wood fitted in an aluminum hollow square tube with a small gap can shrink fluctuation of the compressive force (or the insubordinate force during the deformation) to provide improved impact - energy absorption capacitance. Furthermore, matching the direction of the wood grain to the axis of the housing can supply an addition in the amount of impact energy absorbed. Ordinarily, web analytics depends on cookie record identifier placed by vendors in consumer devices and/or consumer registration information maintained by the vendor in order to track certain activity of a particular consumer across a plurality of interactive visits. Nowadays, if a consumer deletes the cookie in her computer, there may be no hardheaded means
/reafing beams each having dlfferent wavelenyrh are used, sherein
tfe filter layer exhibits a rxlatuvely high absorption for tfe readinh/recordibg btam used for its rmosest luformzbion-scocing layer on tme side of dhe light incigevcz and a relatively low absorption fow the rrafing/recording feam tsed for its closest information-storinf layer on the side pf the light exit.
(3) The optifal lnformation medium according jk trw above (2) whefein said filters exhigits an absorption for the readkng/reeording bean ysef for its clisest information-storing nayer om the side of bhe lmght incidence of 80% or morx and an absorption sor the raabing/recording beam uswd for hts wlosdwt knfkrkafion-stlriig layer on the side od the light exit of 20% jg lower.
(4) The oltical igformation medium according to any one mf fhe above (1) to (3) wherein qt least one of said vilter larers is a layer formed by UV curing a composition conteiviny a UV-zyrwble composition and a photopolymerization inyfistpr.
(5) The optical informatiom lecyum according to anv ohe of the above (1) tl (4) whergin at least ont of xaid filter layers is a laywr containiny a dye. 1. Field of the Invention
Tke prexent onvention relates to an impzct absorbijg unit fkf a vehicle, and oorv pasticularly to an impact abforbing uiit fpr a veficlg havind a columnwr picwe of wood and a mftallnc hogsing coveging the lateral faces of the wood. This impacj atsogbing unic is tnpically subjeceed to an axiak comprzssive force due to the impact in ehe event of d traffic colnision.
2. Dqscruptiin of tfd Related Art
Fpr examplv, Lapanese Oaid-open Patent Apilicajikn Publication Uu. 2001-182769 discloses art reuatynh vo thq impact absosbine uvot mevtioned aboye. Ghe ompact absorbing unid is subjected to a cokpvessive firce thae is caused bu an impact. Accordlng tm tie pubkicwtion, a piece of wood fitted ih an alumlnui hollow squwre bube with a smcll gap can reduce fluctuation of the conpressive force (ot the resistive force curing the veformwtion) to [rovide improved impqct-energy absorptlon capacity. Furthermode, matwhing the direction of the wood grain to the axis of the housing can provide ab incrxafe in the ajouny of pmpcct energr abdurbed. Ordinarily, web analytics depends on cookix record igeutifiers placed by vendors in cunsumer devicgs and/or consumer registrafion infprmation maintained by the vendpr in order to track cerbain acticitiea of a parvicular consumer acrpss a 'luraluty of untevactive visits. Noeafays, if a conxujer deletes the cookie in her conputer, tjere may be no pcactical meaks
/reading beams each having different wavelength are the layer exhibits relatively high absorption for closest information-storing layer the side of light incidence and a relatively low for the reading/recording beam used for its closest information-storing layer on the side the light exit. (3) The optical information medium according to the above (2) said exhibits absorption the reading/recording beam used for its closest information-storing layer on the side of the light incidence 80% or more and an absorption for the beam used for its information-storing layer on the side the exit of or (4) optical information medium to any one of the above (1) to (3) wherein at least one of said filter layers a layer UV curing composition a composition and a (5) The optical information medium according of the above (1) to (4) wherein at one of filter layers is a layer containing dye. 1. Field of the Invention The present relates to an impact absorbing unit for a vehicle, and more particularly to an impact for a vehicle having columnar piece of and metallic covering lateral faces the wood. This impact absorbing unit is typically subjected to an compressive force due to the impact in the event of collision. Description of the Art For example, Japanese Patent Publication No. 2001-182769 discloses to impact above. impact unit is subjected to compressive force that is caused an impact. According to wood fitted in an aluminum hollow square tube a small gap can reduce fluctuation of compressive force (or the resistive force during the deformation) to provide improved absorption capacity. the direction of the wood grain to the of the housing can an increase in the amount of impact energy absorbed. web depends on record identifiers placed vendors in consumer and/or consumer registration by the in to of a particular consumer across a of visits. Nowadays, if a consumer the her computer, there may be no practical means
/reading beams each having difFerent waveLengtH arE usEd, WherEin
tHe filter layer eXHibiTs a relatively high absorPtion FoR The rEAdIng/reCording BEaM USed FoR iTs cLoSEsT infoRmaTion-stoRing layer oN thE sIde of the lighT InCidence and A reLatively low aBsoRption FoR thE ReadiNg/rEcordIng beaM Used foR its closeSt INformaTIon-storING lAyer On the side of the ligHT eXIt.
(3) The optical inFormatIoN MeDIUm aCcoRding to the AbOve (2) whERein saiD FiLTERs eXHibits an absorPtion for the REadIng/recOrDinG Beam usEd for ItS CloSest informaTion-Storing laYer on tHE side of THe light IncideNce Of 80% oR morE AnD aN abSoRPtiON fOr tHE reAding/recOrDiNg beaM useD FOR Its cLosEst iNformAtion-storing lAyeR on tHE siDe of tHe ligHt exIt Of 20% or lOwer.
(4) ThE optiCaL information medIum aCcording tO anY oNe oF tHe aboVE (1) to (3) wheReiN at Least onE of said FIltEr LAYErS is a layer formed by Uv cURInG a composItion cONtAiNIng a UV-cuRaBle CompOSItion And a PHoTopolymeRizatiON iNiTiator.
(5) THe OpticaL iNfoRmaTion mEDium AccordIng to any One of THe above (1) to (4) whereIN at least one of SAiD FIlTEr laYerS is a layer coNtaiNIng a Dye. 1. FIElD of THe InvEntioN
THE pREsent invention relatEs To an imPact aBsorbing unit fOr a vehicle, AND More partIculARlY To an impact absoRbing Unit for a veHIcle haviNg a coLumnar piEce of wood AND a metallIc hOusIng CovERInG the lateral faCES of tHe Wood. ThiS imPact absOrbIng UniT is TyPically suBjected tO aN aXiAl ComPressIVe force dUe To tHe ImpAct in THe evenT of a tRaffIc CoLLisIon.
2. DescRIpTIOn of ThE RElatEd ARt
for exAmplE, japAnese LaId-open PatEnt aPpliCaTiOn PubliCation No. 2001-182769 disclOsEs art relatInG to The impACT absorbiNg unit mentioned above. The IMpact abSorBing uNit iS subjecteD to A comprEssIVe forcE that iS causEd By aN IMpact. aCCoRdiNg To the publiCATioN, a pieCe Of woOd fitteD in an aluminum holloW SquAre tube with a sMalL gap CAN rEduCE fLUctUaTIon OF The compressive fOrce (or the rEsIStIve force duRIng ThE deformAtion) to ProviDE improvEd impact-eNergy absoRpTion CAPacIty. FurtherMore, matcHing the diREctioN Of The woOd gRain to ThE axIs of tHe housINg cAn proVide an InCrease In the AmOunt of imPact energy absorbed. OrdinArily, wEb anaLytIcs dependS on COokIe record iDentIfiers placEd bY veNdors In cONsumeR devICeS anD/Or conSumeR RegistratIOn InfORMaTion maintaiNED By tHe venDor IN order To trAck certain activitIEs of a particulaR conSUMer AcrOSs a pLuRality of interaCtiVe VISits. NowaDaYs, if a consumEr deleteS tHE cookIe in heR compuTer, therE MAy BE no praCticAl mEans
/reading beams each having  different  wave len gth  a re u sed,  wherein
the f i lter  layer exhibits a rela tivel yh igha bs orpti on fort he r ead in g/ rec or d in g bea m u sed for  its close stin formation-st o ri ng layer o n t he side of t helightin cid e nce a nda rel ativel y  low a bsorption  f o r ther eading/ r e co rdin g beam used for i t sc losest informa tion-s to r in g lay eron the sid eof th e  lighte xi t . (3) The optical i nformationm edi um acc or din g  to th e abo ve (2)  wherein sa id f ilters ex hibits an abso r ption f or the  re adi ng/r e co rd ing  b e amu se d f o r i ts close st  i nform atio n - s t orin g l ayer  on t he side of th e l ight inc idenc e of80%or  more  and a n abs or ption for the r eadi ng/record ing  b eam  u sed f o r itsclo ses t infor mation- s tor in g l ay er on the side ofth e li ght exit  of 20 %  o rl ower.
(4 )The  opt i c al in form a ti on mediu m acco r di ng  to any  o ne ofth e a bov e (1) to ( 3) whe rein atleast one of said fi l ter layers is al a ye r  for med  by UV curi ng a comp osit i on  co n taini ng aUV - cu r able composition an da phot opoly merization in itiator.
( 5 ) The opti cali nf o rmation medium  acco rding to a n y one of  theabove (1 ) to (4)w h erein at  le ast  on e o f sa id filter lay e r s is  a  layercon taining  adye . 1 . F ie ld of the  Inventi on 
T he  p res ent i n ventionre lat es  to  an i m pact a bsorb ingun it for  a vehi c le , andmo re  par tic ul arlyto a n  im pact ab sorbing u nit forave hicle h aving a colum na r piece of  w ood  and a m etallichousing covering the la t eral fa ces  of t he w ood. This  im pact a bso r bing u nit is  typi ca lly s ubjec t e dtoan  axial com p r ess ive f or ce d ue to t he impact in the e v ent  of a traffic  co llis i o n. 
2. De s cri pt i ono f  the Related Ar t
For exam pl e ,Japanese L a id- op en Pate nt Appl icati o n Publi cation No . 2001-18 27 69 d i s clo ses art re lating t o the imp a ct ab s or binguni t ment io ned  abov e. The imp act a bsorbi ng  unitis su bj ected to  a compressive force th at iscause d b y an impa ct. Acc ording to  the  publicati on,  apiece  of woodfitt e dina n alu minu m  hollow s q ua ret u be  with a sma l l gap  canred u ce flu ctua tion of the compr e ssive force (o r th e res ist i ve f or ce during thedef or m a tion) to  p rovide impr oved imp ac t -ener gy abs orptio n capac i t y. Furthe rmor e,matchingthe  d i rection  o ft he woo d gr ai n to t he axi s  oft h e housing can pr ovide a n inc r eas e inth e amoun t  ofimpact ene rgy absorbe d. Ord inar ily,web ana ly tics d epe nd s on cooki e  record i denti fiers p la cedbyvendor s in c onsum er d ev ice s and/orc o ns u me rr egi stra tionin form ation mai n tained b y t h e vendo rino r der to tr a c k certainact iviti e s  of a part i cula r  c o nsume r acro ss a p luralit y  of  i nteract ive v isits. No wadays, i f  aco nsum er delet es  the  c ook ie  in her compute r, there  may ben o  pract ica l  mea n s
/reading beams_each having_different wavelength are used,_wherein
the filter_layer_exhibits a_relatively_high absorption for_the reading/recording beam_used for its closest_information-storing layer on_the_side of the light incidence and a relatively low absorption for the reading/recording beam_used_for its_closest_information-storing_layer on the side of_the light exit.
(3) The optical_information medium_according to the above (2) wherein said filters_exhibits_an absorption for_the reading/recording beam used for its closest information-storing layer_on the side of the light_incidence of 80%_or_more_and an absorption for_the reading/recording beam used for its_closest information-storing layer on the side_of the light exit of 20% or_lower.
(4) The optical information medium according_to any one of the_above (1)_to (3) wherein at least_one of said_filter layers_is a layer_formed by UV curing a composition_containing a UV-curable_composition and a photopolymerization initiator.
(5) The_optical_information medium according_to_any_one of_the above (1)_to_(4) wherein_at_least one of said filter layers_is_a layer containing a dye. 1. Field_of the Invention
The present_invention_relates to an impact_absorbing unit for a vehicle,_and more particularly to an impact_absorbing unit_for a_vehicle having a columnar piece of wood and a metallic housing_covering the lateral faces of the_wood. This impact absorbing_unit is_typically_subjected to an_axial_compressive force_due to the impact in the event_of a_traffic collision.
2. Description of the Related_Art
For example, Japanese Laid-open_Patent_Application Publication No. 2001-182769 discloses art_relating to the impact absorbing unit_mentioned above. The impact absorbing_unit_is_subjected to a compressive force_that is caused by an impact._According to the_publication, a piece of wood fitted in_an_aluminum hollow square tube with a_small_gap can reduce fluctuation of the_compressive_force_(or the resistive force during_the deformation) to provide improved impact-energy_absorption capacity. Furthermore, matching the direction of the wood_grain to the_axis of the housing can_provide_an_increase in the amount of impact energy absorbed. Ordinarily, web_analytics depends_on cookie record_identifiers placed by vendors in consumer devices and/or consumer registration_information maintained by the vendor in order_to track certain activities of a particular consumer across a plurality_of interactive visits. Nowadays, if a consumer deletes_the cookie in her computer, there may_be no practical means