CA2454550A1 - A high contrast display panel - Google Patents
A high contrast display panel Download PDFInfo
- Publication number
- CA2454550A1 CA2454550A1 CA002454550A CA2454550A CA2454550A1 CA 2454550 A1 CA2454550 A1 CA 2454550A1 CA 002454550 A CA002454550 A CA 002454550A CA 2454550 A CA2454550 A CA 2454550A CA 2454550 A1 CA2454550 A1 CA 2454550A1
- Authority
- CA
- Canada
- Prior art keywords
- optical panel
- thickness
- light
- face
- waveguide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 30
- 238000005253 cladding Methods 0.000 claims abstract description 9
- 239000011521 glass Substances 0.000 claims description 2
- 238000003384 imaging method Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims 1
- 241000594011 Leuciscus leuciscus Species 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- WKVZMKDXJFCMMD-UVWUDEKDSA-L (5ar,8ar,9r)-5-[[(2r,4ar,6r,7r,8r,8as)-7,8-dihydroxy-2-methyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-6-yl]oxy]-9-(4-hydroxy-3,5-dimethoxyphenyl)-5a,6,8a,9-tetrahydro-5h-[2]benzofuro[6,5-f][1,3]benzodioxol-8-one;azanide;n,3-bis(2-chloroethyl)-2-ox Chemical compound [NH2-].[NH2-].Cl[Pt+2]Cl.ClCCNP1(=O)OCCCN1CCCl.COC1=C(O)C(OC)=CC([C@@H]2C3=CC=4OCOC=4C=C3C(O[C@H]3[C@@H]([C@@H](O)[C@@H]4O[C@H](C)OC[C@H]4O3)O)[C@@H]3[C@@H]2C(OC3)=O)=C1 WKVZMKDXJFCMMD-UVWUDEKDSA-L 0.000 description 1
- 101150052147 ALLC gene Proteins 0.000 description 1
- 208000031968 Cadaver Diseases 0.000 description 1
- 241000252233 Cyprinus carpio Species 0.000 description 1
- 101100346656 Drosophila melanogaster strat gene Proteins 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 208000035126 Facies Diseases 0.000 description 1
- GVGLGOZIDCSQPN-PVHGPHFFSA-N Heroin Chemical compound O([C@H]1[C@H](C=C[C@H]23)OC(C)=O)C4=C5[C@@]12CCN(C)[C@@H]3CC5=CC=C4OC(C)=O GVGLGOZIDCSQPN-PVHGPHFFSA-N 0.000 description 1
- 101000973623 Homo sapiens Neuronal growth regulator 1 Proteins 0.000 description 1
- 241000845077 Iare Species 0.000 description 1
- 102100022223 Neuronal growth regulator 1 Human genes 0.000 description 1
- 241000282320 Panthera leo Species 0.000 description 1
- 241000206607 Porphyra umbilicalis Species 0.000 description 1
- 235000018734 Sambucus australis Nutrition 0.000 description 1
- 244000180577 Sambucus australis Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000035620 dolor Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- TZDUHAJSIBHXDL-UHFFFAOYSA-N gabapentin enacarbil Chemical compound CC(C)C(=O)OC(C)OC(=O)NCC1(CC(O)=O)CCCCC1 TZDUHAJSIBHXDL-UHFFFAOYSA-N 0.000 description 1
- 229940074066 horizant Drugs 0.000 description 1
- 235000015095 lager Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
- G02B6/06—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images
- G02B6/08—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images with fibre bundle in form of plate
Abstract
An optical display panel which provides improved viewing contrast is disclosed. The optical panel includes a plurality of stacked optical waveguides, wherein each waveguide has an inlet face and an outlet face at opposing ends of each waveguide, and wherein each waveguide is formed of a core in contact with at least one cladding layer, wherein the at least one cladding layer includes at least one black layer, and at least one redirector connected to the inlet face of each of at least two waveguides. The at least one back layer has a first thickness, and the core has a second thickness, and the first thickness is preferably a multiple of the second thickness. In a preferred embodiment, the first thickness is at least two times greater than the second thickness. In a second preferred embodiment, the first, thickness is at least four tines greater than the second thickness.
Description
--~' P~~EI~T
~3 ~iIGT~ GbN'1~5~ hrSPLAY P.~NE~ ANA
A t~?THQI? OF M~K.'CNC;~ A HIGF3 ~DNTRAS'T!
DISPLAY PANEL
CRC?SS R~FEREI3CE TC3 RELATED 16~P$L~C1~'T=Dl~Fs i~ot applic:ab~.e.
~AGK.GROUND of THr zrW rlorr Field o.f the InZrerzLicn The present in~rentzc~n is direC't~d genera 1 1y to a ~>~.waax' t~pt:LCal displrn~, anc~, lYtOre pa.~'~iCUla~? y, to a high contrast d=.splay pa~e~ and a method of makwng a high contrast display panel.
l~a~cxiption o~ Whe ~aekg:cound ~T~deo display scrams typically use Cathode rav 'tubes (C;Rxs) far p~oj~>rt~.nc~ an image onto tlae outlet face of the scrc~2n. A typCal_ screen of th~.s type has a ~r~.dth 'to he~.ght .ratio c'af 4t3 ~~a2th 525 ve~tioal lines of resolution_ Am ~~.ectron beam rczus~l: be scanned both horizontally and ve.~t? tally o~. the sexeen tc to~rc~ a number of p~.x~:~sr w'rr~.ch cal7.ectively ' fcr~f the i_:~:agp. c:onw~nt~onal cathode ray t~ab~s ha.v~ a pxactica~. ~.imit i1x sic and are xelativeliY deep to aecomir~czdata ~~n ~~qua.~ed electron c~un. Larder screen tp~.e~~.sions ~r~
availabi~ ~rhich typzt.:ail~= xnGl.~ade various forms o~ image r~r~rjeotion fax aricreasing the SC~e~r~ image sa.ze. F:owever, such screens may experience 7.iraited vie;rir_g angle. 7.imited r'eSOLLlta.O~l, decreased brightneSSf s31'1d ~~C.~~r'lS~c~ COn'r~~Str part.ic~z.Zariy ~.n pro~PC'Lion display screens _ 1~ is known that opl:ical par~e:ls carp be created using a p3~a.ralz~.y o~ staged wave guides, and an r~ptica7. panel may be ~~endexed black using aG least' one black cladding layer between transparent coxes of the waveguidese True cladding layers hare a lc~rer index_ of re~xactior.. than ~~a° wa~egu~de cares fog ef?=ec~:uat~.a'zc~ total ~.riterr'.at reflection c>f the 3.mage light cnarfnelec~ thzaugh t~°:e cores, and .hereby i~np.r_ove cQntrastr i_e. thexeby irripxove the appearance of black i~~.t~es on a S G~E'.2i1.
the typical. ~plevision applieat~.on using opt~i.cal pane is, the b1 ack areas are m~.narni red ire order td ntaXimiae ache laght txansmissian area. ~.z~d to thereby improve screen ~zi.gi-~tr~ess_ ~owe~r~=r, t~:e ~tixz~.~txza~i.an t~f the black areas do r_he Lace of the mptic;~al parcel aoe~ nay. allc~~a nor optiac~zzatipn of scxesn co~strast, r.~ue -to the fact that ox~..Ly increases in the bi ack axe<~ aZi ow ~o~ ncreases zn scxeer~ coriCra~t . Further, rnaxzmizatiori of the Iaght transmiss~,an area s~.multarieou5ly .."'v.
1~~.~C~S~c '~~12 drea ~~at; r~~~,~c~s arn.~~.~n~ ~zc~~t, thereby furLhcz decre,~sing screen contrast and d.arkr~es~.
'The refor_e, tile need exists fox a dispia~r pane. that yncrpases the appeazance of 'the bLauk area on. the screen to thereby i~-czprove viewing cor~trast.
BRIEF' S~bM~R'Y C3E THE ~:L~VEN~~ON
Ft~e p_esenG in:Terltion is directed to a ha.uh CGntxaSt c~ptic:al. vanel_ f3~~e optical. pane. l:nC~.udes a piura~ity of stacked opt~.cai wa~reguidesr wherein each wa~.:guide has an inlet face arld an outlet face at opposing ends of each Wavegui.de, at~d whexe~.n each waveguzde ~.s forre~ed of a core 1n contaG4 ~~ith at .east one c3_adding layer f wherein. tire a~ lea:~t one Madding layer ~.nc.Iudes a'C least one black layers and at least one r~direotor Co~m~eted to the ir~~.et face ax each Cfx a'~ leas t two ~.~awe~uic~~a . The a~t least onw :lack J.ayer has a f~.x5t thickness, and the core h.as a sPGpnd thiCKriess, ar~c~ the =i.rst thickness i~ prefexab:Ly greater than the seco:?d vhickness. ~n a pxEfarxed embada.mentz the f~.7:s" thickness is at least ~:z~ro times greaf~r ~har~ the sec~~n~~ vh~ Ckriess~. In a second p.reLerred e.mbociirr~en~, _ the ~.rst thickness a.s at east ~aur 4ir~=es greater than the second ~.hiCkness_ , the high eo~ntra~~. ~p~~.Ga~ d? splay p~ne~ sa? ves psoble~ns experienced ~n ~.he pra.ar art b~r providing a disp~,a~
paned_ t'rtat increases tre app~azanae o~ the black area art the screen tc thereby ~.mproT,rG viewing ~ot~~ra5t. ~°urthe.~r the present invention rea~ucas ambient light refZPetions ~rorn tire light rec~irectar.
BR:~EF DES~RIPTTt3N GF °~HE S~'VERAf, YEWS ~F THE IZRAW~NGS
For the pres~:nt inventiaa to be clear3y understood and r~ad.:~.~.y practiced, the grese~t invention will be deSCr3.bed i_n ronjuncLi on wztl2 the following ~igur~:s, ~aHereir~:
FIG. 1 ~.S a C~OSS~S~Ctiori~~. v3.ew i~ 3.ttS'~r~t.z.n~ a crass se~,tzon of ~. h~.gh contrast- display panel;
Fib _ ~ ~..s d cross-s::ctional vie~r illz:.strat,ing an .~~texnati~-o embcdimei~~~. of the high Contrast disp3ay panel; and FxG. ' ~.s a cross-sectional v~a.ew ~..l~.stxatzr~ a second a~.ternat~,ve ernbr~diment of the hic~i~ ~onGrast display parte_~. .
L~~'~AT~~:D L~SGR.:1CFT~D1~~ ~~' TF3~ ~N~E2T'~rO~T
xt is to 1~e z::nderstood~ that the fie~~axes and de.scri.pi~zoz-~~ othe p-went invention h~i~e been s~.~F:i~.~zed ~o illustrate elefnents 4hat axe r~levani: for a c~-ear ,. w ~a~r~~~-stanc~ing of the z~resenfi ? r~ve~tion, Chile e~.wr~inating, ~fl~
purposes o,f clar~.ty, navy othar elements Lo7.~nci in a typiea~.
o~tzcal c~~splay panel. 'those of ordinary skill in the a~'~
will recognize that rWher elements are c~es~.~~3ble and/or rec~u~.red in order to i,nplemen.t the present invention.
Hawe~ler. 3~ecausa s~Gh e.1 emer~ts axe wall. known in the axt, and because they coo r:ot faczJ.it.ate a be'~ter understanding o~ the px~se~l~ invant;ianp a uiscussic~n of sucri elements is not ~rcwided herein.
FiG_ ~. is a crass-sectzanal vieta schematic illustrating a display panel 1~. The display panel 10 irtcl ~;des a plurality cf stacked optical taavegu:~.des lea.
whexein each waveglli.:°_:e l.~a layer :gas a black Layer, such as a black Cladding layer, thercbet.weenr an outlet face 16 at one er~d of a bade 18 formed by the pluzality a~ staoked waveguide,:, 16a, an i.rulet ~aee l~ av ~a seoflnd r~~ld c~f she bady ?8r wherein the inlet dace 12 preferabl~l znc2udes a xedireCtor 19r suce ~~s a '~~~1F manufact~zred b_yr 3v1~ CarporatiOri of 1~'i.nn~apalisa MN, ;,r similar_ urx'ucturer ~'~~~r_°enrir arid a ~ 1C~J'I=~ C~~rlE:r'dl.rr ~~..
The baoly 1.'~ is pre~erabl.y sc~J.i.d and xecei~res light ~.~ al,ong the surface of the inlet face ~.2- In a pr°zerred embodiment. ~-~zc inlet, lace ~.ncJ:udes thereon a .redix~eetor 1~, W
~~ch as a TRAM', a ~'R~~'-Zi,'~er ar a sim7 far structure, that .~edzrect s light incc~m3_r~g tc the inlet fac° 12 a.nto t.h~
~aveguic~es 16a_ The 3_a.ght 19 is pass~c~ ch~ough ~h~ body ~.8 after entering the inlet pace 7.2, and is substantially '~Ota~ 1y l t~'l:a~'nally x~flect~d through th' body 18 to the outlet race 16. i_r a preferred embodiF~~~nG oz the present i~:zyenti~n,. tile body '~$ .z s formed of the le~igth, height P and width of the plurality of staGtcad waveguides 16a_ The pluwa~.~ty a~ stacked craYe~~uides 16a forms the body 1$ of the panel 1t7, forms a~ one end of the stack ~.6a t;~e .in~e~: face 12, and a~ a second er:d -the outlet face 16.
The wav~g~aicies 16a ~~ay be forned of any mwterzal known irz the apt. L~5 b~ suitable fca.~ passing electramagnetyC W2iV' '~.~'l~''i~thrOI.P~.jrlr Sll~~'1 ~''a'Y ~:32.1~ IlOi'. ~_I:Stlt2~
'~°..~t, ~]_v:~S'~lCSI OZ' class ~ '~h~ x~refex'x~d ocllment Oz the pr~sezlt lnven~l0n is implEmel'lt~d using inriividual glass. p~.astic ox poiymez' shears, ~Yhi:,h aye t.y-gzcally dpp~axina~.ely ~ 001-. 020" thick, arl~ ~~rh~ch ~a,y be of a manageable ~enc~th and wi.dti~. Cat caurst, other' thick~'~ess~s may bB ertglOy~d fob each individual gLasu, plastic cr po~yrner sheet, dependant upon the av~ra.ll dim~nsldns of the display. The pLlyme~ used clay be a suitably plastic lam~.nate, such as zexan~r z~rh~c~ a.s comrae~ciaL~,y ~v~~~.~ nraZi~ frbm the Gen~r~l El~ctrxc Comp~nyQr ~~
dl7.j~ ~7~LyICIE?~'$ CJ.~ G~c~'yllCSr SIiC~'1 3$ P.ZC''2~3.g~.aS,'~T.
The waveguic3es ~.6a are in the form of sheets or .ribbons extending tie ful ~. wid*~h of tha outlet L~.G'E? '~ 6 and are stacked to collecti~rely foam at their ~zpper ends the he.zght of the dtz~~et face 16. The wavegui.des ~6a are d~.scosed along ~hezr ~.oz~gitudinal .light transmitting ,axss.
Tie number of r~aXregui.d~~ ~ oa may be selected fort providing a car7Ce53~Orid~.ricJ vertic,~3. reSC>~.LitiOn of the out? ct face I6. ~"ox example, 525 of the ,aaveguides 1.6a may be stacked to produce 525 lines of vextiea~. r'esol~tion in the outlet face 16.
SeVezal waveguides ray c3ptianal~y he employed for each line of vortical reSOl.uti.c:r.. Ari ~'nbociiment wherein rn~x~.t~.p~-a ;aaveguides are employ°eci decreases the cr~? ticaii.ty of align;~a;~t tolerances of the screen to the incoming imago :~~g~;t. S~.ac2 the vxaveguides 16a exteznd the full width of the ou~:~.et. f~ac2 16, hor?.~.antal resoJ.utzor rnay be contro.l~.ed by .. ~zori~onLal moc3ulatior~ of the image J.ight 14.
~aeh of W:e ~rlt~ral~.ty of wc~veguidss inc7.~:des a c~.erltra7. co~~ 26 fox' ~hann°~.ang the ~.znage ilght 1~ through ~.he YJ~'JeC,~LZ~c~.e8, aIIC~ each core 26 ws disposed het~~een cladd'~.ng laver~ ~8_ ~z3 a pre~:erred em~aotiia:~en~: 41 the p.re.~ent ~..n-4rGnt~on, the cladd?_rig layers 28 extenv cc~mp~.etely xrom the .' ,'a . '~''~
~.nl.et ~a~e ~.2 ~o ~he ~u~~.~t ice 1~ a~or~~ ~~~~~~ ~n~.ite ~r~.~th ~:
v~he outlet fa4e 16. ~ black 7.ayer 30 may be disposed w~.thz.n or between adjoining cladding layers 28 fox absarb~.ng ambient ~.ight 32°at the outlet face 16, and may form mufti-layex cladding layers 28. ~'he term blank is used herein, ro encompass not only pure black Cplo'r, but additi.flnal.ly, any functionally aompaxable dark Dolor sua.table -nor .use in the pzesent inventlonr such as dark blue. she Mack layer'30 is ' only necessary w~.th~in the vie~,~abl° region of the outlet face, huL, 1I1 3 prez~erred eribodimen't of the present 2nVentlon, the b~.ack layex 30 extends comp7.etel~l from the inlet face I2 to Lk~e outlet ~Fac.e 16 a-!.an g tY~C- ~ri't~.re wi.dt~h Of tile outlet face ~5. Ac~dit~.or:a~.7.;.r, the c.adding layers 2$ may be forged of daxk gradient re~xactive index ~.a~Texs.
xn the ~aref_erx~ed embadlmeni: of the present inven~.ian, the black layexs, which raay be or znay be between 1-h~! GIcl~G2.1X7C~ lay~~~r C07?'l~x~Se 80a d~ ~clC~'1 - waveguidefcladciing,~bla~k ~.ayer layer. for exampJ.e, the clear waveguzde core wou:f.d be Il4 of the thickness of the black layer at ~.he outlet face 16. Thu~t the thiokness o~ the black - layer is a multiple a~ at least, how exarnplei ?. gre3Ge.~ than or equal to the Thickness c~f luhe clear layer, 1.°. or the core. In a prefer.ree embodiment. the b~!ack foyer extends yo r 1 ...--..,, ~.h~ inlet f~~~ 12 r ~u~t do~~ no ~ L~~t~nd ~~ Lhe, edge o~ the redi.rectox 7.°~. Alternata.vely, the :~wacJc layer may ex~:end to the bc~ges of the redi_reG'~Ox 19, and thus be adjacent to the path of the input ~-.fight frcrn the .~zght generator 21_ Furt,hc~r, th2 uSe of the redire~'Lox 1.9, stick as a II~F Q:c lF~f--Like ~arismatic structure, in conjunction with the de~.rat~an o~ just approximately ~Ob ~~ ~~~!e thic3cne5s of each lay~:~ to the cerit~a~ care decreases the aznb.ien~~ reilectzon area of trte redireetor ~.9. 'The useful. arcs avaiTabl.e to ambient i.~-ght is thereby :Laznxted to just ~0% of the redirector 29. Reflec~pc~ ambient 7.ight. is tuns zuxther reduced at the inlet face, fi1-~ezeby further iinpxcving screen daxkness and Contrast at 'the out~.ei, face ; o_ "~',.ach cnritral core 25 Y:as a firs. index of r2fyactAQn. The c~.a~:dzng ~ aye-ors 28 f ~rh~.ch, as discussed herel.nai~ove, may he black, have a second ir~dex of refraction, I_nwer ~:i~an that of t}~e central.. care 26, fpr ensuring total internal reflect 1. on cjf Che image 7.lght '! 9 as i.t -~rav2ls ~.~am the znlet facie 1.2 to the outlet face 16_ The black layers 3Q, if separate ~~a:n th° claddxrig layexs, ~,s~ have any ~nde~
o~ retxaction, but, axve still preferaoly equal ta, cr . substantially greater than, the thickness o~ the c~nt.ral corps 2 a -the inl~~ ~'~c~ ~.2 ~r~d c~u~~at f~GG ~6 art iorr~?ed ~~
the p1 ural~ ty of wavec~uades J.fia, ~~Therein ane end of each waveguide 1~a forms an inlet for that wavegu.ide, and wherein the apposite end of each c.7aveguide ~.6a corms a~n outla for shat waveguide 16a. Each ~wa~reC~u~.de 16a extends hori.ontaZly, and the plurality of stacked wavegt.~~,d~s 16a extends ~rertlca~.ly. ihc light 1ff rnay be displayed an the cutlet face in a Earn such ~s, but not ~.zmited t;c~, a video image 14a_ Consequently, an a- preferred ~rnbodament the plura~.lty .
of waveguides lGa are stacked approximately parallel to the horizontal, thus placing the outlet face 16 and the inlet face 12 iri the same salable from the horizant=a:L and approx~.rnatc:ly equittis~:ant from the horizontal _ The inlet face 1~ is forir:ed by LhL plurality of stacked optic2l waveguic.~es 16a. The inle4 face 12 is at one end of the body' I8, arid reCe2ves l.zght 3.4 from the J.Ight gcr~exatc~r 21. 'lhe inlet face may be slat~ or serrated, and .. tote black layers may extend to tl~e out.iet face, but not to tyke redirectc~r 19, as shown in e2~_ '1, ax may extend through the red~.rec~ar 7.3a as .~hOetan iI~ FIG. Z_ In the preferred embodiment, the role i_ pace 1~ inc~.udes thereon th~~ a i. least one redireeLaY I9 za.stuned thereto, stash as by adhesive, epoxy or e~tbassir~g. '~~~e outlet face T.~ is deF~,:ned as the ,.
~x~~n~ of the badyY 1$. and the ~~tt~~~t f~c~ mc,y b~ flat, a,~
shown in F~~s. 1 and 2, or serrated, such as with on7.y a flat area p~'oximate to anc_ ~.ncluding tna exit point of ~.fie central.
care, as shown in F1~, 3. The outlet face 16 may additiona3.~y i1'xCluder S~lC~r: as b~: embcss~..ng~ or have thereor_, stick as by c~f~ix~.nc~, a a~..fuser, zcr examp~_e, to pz-esent an imt~roved i,nac~e 14a to the z=fewer. Rddi~ianal3.yr tl~e panel 7.0 has a height from the -fop to the battorn of the outlet face ~t6, and a width frr~rn ~:he ~.efL to the right. c~f 4h~ outz et dace ~.6. The w~.Cith and h:~ight :gay be selected to produce caxdth t4 hc-fight aspect ratios of 4:3 or ~.0=9, ~:or example, far use in a typi caJ. te~.evi;~iora appl.icatzo~..
The ligot q4nerator 22 generates iyght ~.~ and passes the light to lrz3.e-c 'ace 15_ ~:he 1 fight ~ 14 preferably strikes the redirectox 19 at a steep entx~anre ang?e. The light generator ~1 sn~.y be a ~rhite fight projector, such as an overhead projector, or may incJ.ude a light sources and/or a light mQdulatorr and/or imaging apt~.cs, such aS a Ji,deO or mo<rie p~'ojector_ Ih~.~-= fight 24 may be initially genega-red, tar exarn~.? e, oy t~:e light source. 'rhe ~.ic~ht soux'oe z~qy be, far exampte, a brigr3t. incandescent buib, a ias~:r, an arc . lamp, ~n ?°1D, are R~' excited gas dischaxge lamp. any so~.i d sedate .l.~.g~t sou~:ce. rx any phc~sphorsscent, 1-~~inesc~nt, or '_"~, ircandesc~nt 'igh~ ~ouxce. The l~g~~t I~ from the source ~r~~
then be modulated by' tile modulator for c~efin~.ng individual ~ictore el.erne=-asr known in the art as pixe?s. ~lternative?Y~
tJ'z~ light may define a swmple lighted itemf such as an On~off switch. The iznag~.rzg optz.cs may include light folding rcti.rxors ox lenses, fhe ~i~taging optics may be ogt~.call y aligned between the outlet ia:.ce L~ anc3 the 3.ight mod~:lator fox compressing or' expanding and .focusing the light I4 as rec~ulred to accuratezy provide the image to t~.e ou-tlet ~ace 16. 'the ~.ight 19, after entry into the inJ.et face 12 from the redirector. l~r travels thorough the panel body 18 to the putlet yaoe l~_ Iri a preferred embodimernCr c3.~~ar strips c~f plas~Cic~
which are preferably appro~imateJ.y 1/2"' by ~0"~ and appx_-oximately 20/10Q0" tha.ck, are stacked, yrLth a double sided b~.ack adh°$ive strip between each plastic strip, o~ with a dark grad~.~nt between ~ach strip, The dark, or black, lagers are pre~tcrably at leas- appro~.irctat2ly 4 times ~Che thickness of the plastic Strips at each 2ayering- T~:e strip smack is then pressed udder high pressure to .remove air bubb~.es and ~.ncxease adhesion. fhe adhes eve may be shades ~at~~er than black. such ': as dark blue, aa-~d preferably ral.ls out life a ~orr,~ of tape. Zn a plasticfadI=esz~elplastic/adnesive f orr,~at _ the pxessuxe v app~.~~c~ ~~o the compJ..~t.ed ~tac,~ i~ p~efer~nL~ ir_ excess o~
a,a~o po~nas.
T~iase c~f ardinaxy s~;ill i;n the: art will reoogn~.z~
that many modifications and variat.;~ons o.f the present invent,zon z~ay be irtplemented_ ~'~e foregoing descz'~p~iare and the'=a114wi12g o7.aims arc intended to cover all s~cm :nodi~2ca~.:ians anti var~.a~.ion5.
~3 ~iIGT~ GbN'1~5~ hrSPLAY P.~NE~ ANA
A t~?THQI? OF M~K.'CNC;~ A HIGF3 ~DNTRAS'T!
DISPLAY PANEL
CRC?SS R~FEREI3CE TC3 RELATED 16~P$L~C1~'T=Dl~Fs i~ot applic:ab~.e.
~AGK.GROUND of THr zrW rlorr Field o.f the InZrerzLicn The present in~rentzc~n is direC't~d genera 1 1y to a ~>~.waax' t~pt:LCal displrn~, anc~, lYtOre pa.~'~iCUla~? y, to a high contrast d=.splay pa~e~ and a method of makwng a high contrast display panel.
l~a~cxiption o~ Whe ~aekg:cound ~T~deo display scrams typically use Cathode rav 'tubes (C;Rxs) far p~oj~>rt~.nc~ an image onto tlae outlet face of the scrc~2n. A typCal_ screen of th~.s type has a ~r~.dth 'to he~.ght .ratio c'af 4t3 ~~a2th 525 ve~tioal lines of resolution_ Am ~~.ectron beam rczus~l: be scanned both horizontally and ve.~t? tally o~. the sexeen tc to~rc~ a number of p~.x~:~sr w'rr~.ch cal7.ectively ' fcr~f the i_:~:agp. c:onw~nt~onal cathode ray t~ab~s ha.v~ a pxactica~. ~.imit i1x sic and are xelativeliY deep to aecomir~czdata ~~n ~~qua.~ed electron c~un. Larder screen tp~.e~~.sions ~r~
availabi~ ~rhich typzt.:ail~= xnGl.~ade various forms o~ image r~r~rjeotion fax aricreasing the SC~e~r~ image sa.ze. F:owever, such screens may experience 7.iraited vie;rir_g angle. 7.imited r'eSOLLlta.O~l, decreased brightneSSf s31'1d ~~C.~~r'lS~c~ COn'r~~Str part.ic~z.Zariy ~.n pro~PC'Lion display screens _ 1~ is known that opl:ical par~e:ls carp be created using a p3~a.ralz~.y o~ staged wave guides, and an r~ptica7. panel may be ~~endexed black using aG least' one black cladding layer between transparent coxes of the waveguidese True cladding layers hare a lc~rer index_ of re~xactior.. than ~~a° wa~egu~de cares fog ef?=ec~:uat~.a'zc~ total ~.riterr'.at reflection c>f the 3.mage light cnarfnelec~ thzaugh t~°:e cores, and .hereby i~np.r_ove cQntrastr i_e. thexeby irripxove the appearance of black i~~.t~es on a S G~E'.2i1.
the typical. ~plevision applieat~.on using opt~i.cal pane is, the b1 ack areas are m~.narni red ire order td ntaXimiae ache laght txansmissian area. ~.z~d to thereby improve screen ~zi.gi-~tr~ess_ ~owe~r~=r, t~:e ~tixz~.~txza~i.an t~f the black areas do r_he Lace of the mptic;~al parcel aoe~ nay. allc~~a nor optiac~zzatipn of scxesn co~strast, r.~ue -to the fact that ox~..Ly increases in the bi ack axe<~ aZi ow ~o~ ncreases zn scxeer~ coriCra~t . Further, rnaxzmizatiori of the Iaght transmiss~,an area s~.multarieou5ly .."'v.
1~~.~C~S~c '~~12 drea ~~at; r~~~,~c~s arn.~~.~n~ ~zc~~t, thereby furLhcz decre,~sing screen contrast and d.arkr~es~.
'The refor_e, tile need exists fox a dispia~r pane. that yncrpases the appeazance of 'the bLauk area on. the screen to thereby i~-czprove viewing cor~trast.
BRIEF' S~bM~R'Y C3E THE ~:L~VEN~~ON
Ft~e p_esenG in:Terltion is directed to a ha.uh CGntxaSt c~ptic:al. vanel_ f3~~e optical. pane. l:nC~.udes a piura~ity of stacked opt~.cai wa~reguidesr wherein each wa~.:guide has an inlet face arld an outlet face at opposing ends of each Wavegui.de, at~d whexe~.n each waveguzde ~.s forre~ed of a core 1n contaG4 ~~ith at .east one c3_adding layer f wherein. tire a~ lea:~t one Madding layer ~.nc.Iudes a'C least one black layers and at least one r~direotor Co~m~eted to the ir~~.et face ax each Cfx a'~ leas t two ~.~awe~uic~~a . The a~t least onw :lack J.ayer has a f~.x5t thickness, and the core h.as a sPGpnd thiCKriess, ar~c~ the =i.rst thickness i~ prefexab:Ly greater than the seco:?d vhickness. ~n a pxEfarxed embada.mentz the f~.7:s" thickness is at least ~:z~ro times greaf~r ~har~ the sec~~n~~ vh~ Ckriess~. In a second p.reLerred e.mbociirr~en~, _ the ~.rst thickness a.s at east ~aur 4ir~=es greater than the second ~.hiCkness_ , the high eo~ntra~~. ~p~~.Ga~ d? splay p~ne~ sa? ves psoble~ns experienced ~n ~.he pra.ar art b~r providing a disp~,a~
paned_ t'rtat increases tre app~azanae o~ the black area art the screen tc thereby ~.mproT,rG viewing ~ot~~ra5t. ~°urthe.~r the present invention rea~ucas ambient light refZPetions ~rorn tire light rec~irectar.
BR:~EF DES~RIPTTt3N GF °~HE S~'VERAf, YEWS ~F THE IZRAW~NGS
For the pres~:nt inventiaa to be clear3y understood and r~ad.:~.~.y practiced, the grese~t invention will be deSCr3.bed i_n ronjuncLi on wztl2 the following ~igur~:s, ~aHereir~:
FIG. 1 ~.S a C~OSS~S~Ctiori~~. v3.ew i~ 3.ttS'~r~t.z.n~ a crass se~,tzon of ~. h~.gh contrast- display panel;
Fib _ ~ ~..s d cross-s::ctional vie~r illz:.strat,ing an .~~texnati~-o embcdimei~~~. of the high Contrast disp3ay panel; and FxG. ' ~.s a cross-sectional v~a.ew ~..l~.stxatzr~ a second a~.ternat~,ve ernbr~diment of the hic~i~ ~onGrast display parte_~. .
L~~'~AT~~:D L~SGR.:1CFT~D1~~ ~~' TF3~ ~N~E2T'~rO~T
xt is to 1~e z::nderstood~ that the fie~~axes and de.scri.pi~zoz-~~ othe p-went invention h~i~e been s~.~F:i~.~zed ~o illustrate elefnents 4hat axe r~levani: for a c~-ear ,. w ~a~r~~~-stanc~ing of the z~resenfi ? r~ve~tion, Chile e~.wr~inating, ~fl~
purposes o,f clar~.ty, navy othar elements Lo7.~nci in a typiea~.
o~tzcal c~~splay panel. 'those of ordinary skill in the a~'~
will recognize that rWher elements are c~es~.~~3ble and/or rec~u~.red in order to i,nplemen.t the present invention.
Hawe~ler. 3~ecausa s~Gh e.1 emer~ts axe wall. known in the axt, and because they coo r:ot faczJ.it.ate a be'~ter understanding o~ the px~se~l~ invant;ianp a uiscussic~n of sucri elements is not ~rcwided herein.
FiG_ ~. is a crass-sectzanal vieta schematic illustrating a display panel 1~. The display panel 10 irtcl ~;des a plurality cf stacked optical taavegu:~.des lea.
whexein each waveglli.:°_:e l.~a layer :gas a black Layer, such as a black Cladding layer, thercbet.weenr an outlet face 16 at one er~d of a bade 18 formed by the pluzality a~ staoked waveguide,:, 16a, an i.rulet ~aee l~ av ~a seoflnd r~~ld c~f she bady ?8r wherein the inlet dace 12 preferabl~l znc2udes a xedireCtor 19r suce ~~s a '~~~1F manufact~zred b_yr 3v1~ CarporatiOri of 1~'i.nn~apalisa MN, ;,r similar_ urx'ucturer ~'~~~r_°enrir arid a ~ 1C~J'I=~ C~~rlE:r'dl.rr ~~..
The baoly 1.'~ is pre~erabl.y sc~J.i.d and xecei~res light ~.~ al,ong the surface of the inlet face ~.2- In a pr°zerred embodiment. ~-~zc inlet, lace ~.ncJ:udes thereon a .redix~eetor 1~, W
~~ch as a TRAM', a ~'R~~'-Zi,'~er ar a sim7 far structure, that .~edzrect s light incc~m3_r~g tc the inlet fac° 12 a.nto t.h~
~aveguic~es 16a_ The 3_a.ght 19 is pass~c~ ch~ough ~h~ body ~.8 after entering the inlet pace 7.2, and is substantially '~Ota~ 1y l t~'l:a~'nally x~flect~d through th' body 18 to the outlet race 16. i_r a preferred embodiF~~~nG oz the present i~:zyenti~n,. tile body '~$ .z s formed of the le~igth, height P and width of the plurality of staGtcad waveguides 16a_ The pluwa~.~ty a~ stacked craYe~~uides 16a forms the body 1$ of the panel 1t7, forms a~ one end of the stack ~.6a t;~e .in~e~: face 12, and a~ a second er:d -the outlet face 16.
The wav~g~aicies 16a ~~ay be forned of any mwterzal known irz the apt. L~5 b~ suitable fca.~ passing electramagnetyC W2iV' '~.~'l~''i~thrOI.P~.jrlr Sll~~'1 ~''a'Y ~:32.1~ IlOi'. ~_I:Stlt2~
'~°..~t, ~]_v:~S'~lCSI OZ' class ~ '~h~ x~refex'x~d ocllment Oz the pr~sezlt lnven~l0n is implEmel'lt~d using inriividual glass. p~.astic ox poiymez' shears, ~Yhi:,h aye t.y-gzcally dpp~axina~.ely ~ 001-. 020" thick, arl~ ~~rh~ch ~a,y be of a manageable ~enc~th and wi.dti~. Cat caurst, other' thick~'~ess~s may bB ertglOy~d fob each individual gLasu, plastic cr po~yrner sheet, dependant upon the av~ra.ll dim~nsldns of the display. The pLlyme~ used clay be a suitably plastic lam~.nate, such as zexan~r z~rh~c~ a.s comrae~ciaL~,y ~v~~~.~ nraZi~ frbm the Gen~r~l El~ctrxc Comp~nyQr ~~
dl7.j~ ~7~LyICIE?~'$ CJ.~ G~c~'yllCSr SIiC~'1 3$ P.ZC''2~3.g~.aS,'~T.
The waveguic3es ~.6a are in the form of sheets or .ribbons extending tie ful ~. wid*~h of tha outlet L~.G'E? '~ 6 and are stacked to collecti~rely foam at their ~zpper ends the he.zght of the dtz~~et face 16. The wavegui.des ~6a are d~.scosed along ~hezr ~.oz~gitudinal .light transmitting ,axss.
Tie number of r~aXregui.d~~ ~ oa may be selected fort providing a car7Ce53~Orid~.ricJ vertic,~3. reSC>~.LitiOn of the out? ct face I6. ~"ox example, 525 of the ,aaveguides 1.6a may be stacked to produce 525 lines of vextiea~. r'esol~tion in the outlet face 16.
SeVezal waveguides ray c3ptianal~y he employed for each line of vortical reSOl.uti.c:r.. Ari ~'nbociiment wherein rn~x~.t~.p~-a ;aaveguides are employ°eci decreases the cr~? ticaii.ty of align;~a;~t tolerances of the screen to the incoming imago :~~g~;t. S~.ac2 the vxaveguides 16a exteznd the full width of the ou~:~.et. f~ac2 16, hor?.~.antal resoJ.utzor rnay be contro.l~.ed by .. ~zori~onLal moc3ulatior~ of the image J.ight 14.
~aeh of W:e ~rlt~ral~.ty of wc~veguidss inc7.~:des a c~.erltra7. co~~ 26 fox' ~hann°~.ang the ~.znage ilght 1~ through ~.he YJ~'JeC,~LZ~c~.e8, aIIC~ each core 26 ws disposed het~~een cladd'~.ng laver~ ~8_ ~z3 a pre~:erred em~aotiia:~en~: 41 the p.re.~ent ~..n-4rGnt~on, the cladd?_rig layers 28 extenv cc~mp~.etely xrom the .' ,'a . '~''~
~.nl.et ~a~e ~.2 ~o ~he ~u~~.~t ice 1~ a~or~~ ~~~~~~ ~n~.ite ~r~.~th ~:
v~he outlet fa4e 16. ~ black 7.ayer 30 may be disposed w~.thz.n or between adjoining cladding layers 28 fox absarb~.ng ambient ~.ight 32°at the outlet face 16, and may form mufti-layex cladding layers 28. ~'he term blank is used herein, ro encompass not only pure black Cplo'r, but additi.flnal.ly, any functionally aompaxable dark Dolor sua.table -nor .use in the pzesent inventlonr such as dark blue. she Mack layer'30 is ' only necessary w~.th~in the vie~,~abl° region of the outlet face, huL, 1I1 3 prez~erred eribodimen't of the present 2nVentlon, the b~.ack layex 30 extends comp7.etel~l from the inlet face I2 to Lk~e outlet ~Fac.e 16 a-!.an g tY~C- ~ri't~.re wi.dt~h Of tile outlet face ~5. Ac~dit~.or:a~.7.;.r, the c.adding layers 2$ may be forged of daxk gradient re~xactive index ~.a~Texs.
xn the ~aref_erx~ed embadlmeni: of the present inven~.ian, the black layexs, which raay be or znay be between 1-h~! GIcl~G2.1X7C~ lay~~~r C07?'l~x~Se 80a d~ ~clC~'1 - waveguidefcladciing,~bla~k ~.ayer layer. for exampJ.e, the clear waveguzde core wou:f.d be Il4 of the thickness of the black layer at ~.he outlet face 16. Thu~t the thiokness o~ the black - layer is a multiple a~ at least, how exarnplei ?. gre3Ge.~ than or equal to the Thickness c~f luhe clear layer, 1.°. or the core. In a prefer.ree embodiment. the b~!ack foyer extends yo r 1 ...--..,, ~.h~ inlet f~~~ 12 r ~u~t do~~ no ~ L~~t~nd ~~ Lhe, edge o~ the redi.rectox 7.°~. Alternata.vely, the :~wacJc layer may ex~:end to the bc~ges of the redi_reG'~Ox 19, and thus be adjacent to the path of the input ~-.fight frcrn the .~zght generator 21_ Furt,hc~r, th2 uSe of the redire~'Lox 1.9, stick as a II~F Q:c lF~f--Like ~arismatic structure, in conjunction with the de~.rat~an o~ just approximately ~Ob ~~ ~~~!e thic3cne5s of each lay~:~ to the cerit~a~ care decreases the aznb.ien~~ reilectzon area of trte redireetor ~.9. 'The useful. arcs avaiTabl.e to ambient i.~-ght is thereby :Laznxted to just ~0% of the redirector 29. Reflec~pc~ ambient 7.ight. is tuns zuxther reduced at the inlet face, fi1-~ezeby further iinpxcving screen daxkness and Contrast at 'the out~.ei, face ; o_ "~',.ach cnritral core 25 Y:as a firs. index of r2fyactAQn. The c~.a~:dzng ~ aye-ors 28 f ~rh~.ch, as discussed herel.nai~ove, may he black, have a second ir~dex of refraction, I_nwer ~:i~an that of t}~e central.. care 26, fpr ensuring total internal reflect 1. on cjf Che image 7.lght '! 9 as i.t -~rav2ls ~.~am the znlet facie 1.2 to the outlet face 16_ The black layers 3Q, if separate ~~a:n th° claddxrig layexs, ~,s~ have any ~nde~
o~ retxaction, but, axve still preferaoly equal ta, cr . substantially greater than, the thickness o~ the c~nt.ral corps 2 a -the inl~~ ~'~c~ ~.2 ~r~d c~u~~at f~GG ~6 art iorr~?ed ~~
the p1 ural~ ty of wavec~uades J.fia, ~~Therein ane end of each waveguide 1~a forms an inlet for that wavegu.ide, and wherein the apposite end of each c.7aveguide ~.6a corms a~n outla for shat waveguide 16a. Each ~wa~reC~u~.de 16a extends hori.ontaZly, and the plurality of stacked wavegt.~~,d~s 16a extends ~rertlca~.ly. ihc light 1ff rnay be displayed an the cutlet face in a Earn such ~s, but not ~.zmited t;c~, a video image 14a_ Consequently, an a- preferred ~rnbodament the plura~.lty .
of waveguides lGa are stacked approximately parallel to the horizontal, thus placing the outlet face 16 and the inlet face 12 iri the same salable from the horizant=a:L and approx~.rnatc:ly equittis~:ant from the horizontal _ The inlet face 1~ is forir:ed by LhL plurality of stacked optic2l waveguic.~es 16a. The inle4 face 12 is at one end of the body' I8, arid reCe2ves l.zght 3.4 from the J.Ight gcr~exatc~r 21. 'lhe inlet face may be slat~ or serrated, and .. tote black layers may extend to tl~e out.iet face, but not to tyke redirectc~r 19, as shown in e2~_ '1, ax may extend through the red~.rec~ar 7.3a as .~hOetan iI~ FIG. Z_ In the preferred embodiment, the role i_ pace 1~ inc~.udes thereon th~~ a i. least one redireeLaY I9 za.stuned thereto, stash as by adhesive, epoxy or e~tbassir~g. '~~~e outlet face T.~ is deF~,:ned as the ,.
~x~~n~ of the badyY 1$. and the ~~tt~~~t f~c~ mc,y b~ flat, a,~
shown in F~~s. 1 and 2, or serrated, such as with on7.y a flat area p~'oximate to anc_ ~.ncluding tna exit point of ~.fie central.
care, as shown in F1~, 3. The outlet face 16 may additiona3.~y i1'xCluder S~lC~r: as b~: embcss~..ng~ or have thereor_, stick as by c~f~ix~.nc~, a a~..fuser, zcr examp~_e, to pz-esent an imt~roved i,nac~e 14a to the z=fewer. Rddi~ianal3.yr tl~e panel 7.0 has a height from the -fop to the battorn of the outlet face ~t6, and a width frr~rn ~:he ~.efL to the right. c~f 4h~ outz et dace ~.6. The w~.Cith and h:~ight :gay be selected to produce caxdth t4 hc-fight aspect ratios of 4:3 or ~.0=9, ~:or example, far use in a typi caJ. te~.evi;~iora appl.icatzo~..
The ligot q4nerator 22 generates iyght ~.~ and passes the light to lrz3.e-c 'ace 15_ ~:he 1 fight ~ 14 preferably strikes the redirectox 19 at a steep entx~anre ang?e. The light generator ~1 sn~.y be a ~rhite fight projector, such as an overhead projector, or may incJ.ude a light sources and/or a light mQdulatorr and/or imaging apt~.cs, such aS a Ji,deO or mo<rie p~'ojector_ Ih~.~-= fight 24 may be initially genega-red, tar exarn~.? e, oy t~:e light source. 'rhe ~.ic~ht soux'oe z~qy be, far exampte, a brigr3t. incandescent buib, a ias~:r, an arc . lamp, ~n ?°1D, are R~' excited gas dischaxge lamp. any so~.i d sedate .l.~.g~t sou~:ce. rx any phc~sphorsscent, 1-~~inesc~nt, or '_"~, ircandesc~nt 'igh~ ~ouxce. The l~g~~t I~ from the source ~r~~
then be modulated by' tile modulator for c~efin~.ng individual ~ictore el.erne=-asr known in the art as pixe?s. ~lternative?Y~
tJ'z~ light may define a swmple lighted itemf such as an On~off switch. The iznag~.rzg optz.cs may include light folding rcti.rxors ox lenses, fhe ~i~taging optics may be ogt~.call y aligned between the outlet ia:.ce L~ anc3 the 3.ight mod~:lator fox compressing or' expanding and .focusing the light I4 as rec~ulred to accuratezy provide the image to t~.e ou-tlet ~ace 16. 'the ~.ight 19, after entry into the inJ.et face 12 from the redirector. l~r travels thorough the panel body 18 to the putlet yaoe l~_ Iri a preferred embodimernCr c3.~~ar strips c~f plas~Cic~
which are preferably appro~imateJ.y 1/2"' by ~0"~ and appx_-oximately 20/10Q0" tha.ck, are stacked, yrLth a double sided b~.ack adh°$ive strip between each plastic strip, o~ with a dark grad~.~nt between ~ach strip, The dark, or black, lagers are pre~tcrably at leas- appro~.irctat2ly 4 times ~Che thickness of the plastic Strips at each 2ayering- T~:e strip smack is then pressed udder high pressure to .remove air bubb~.es and ~.ncxease adhesion. fhe adhes eve may be shades ~at~~er than black. such ': as dark blue, aa-~d preferably ral.ls out life a ~orr,~ of tape. Zn a plasticfadI=esz~elplastic/adnesive f orr,~at _ the pxessuxe v app~.~~c~ ~~o the compJ..~t.ed ~tac,~ i~ p~efer~nL~ ir_ excess o~
a,a~o po~nas.
T~iase c~f ardinaxy s~;ill i;n the: art will reoogn~.z~
that many modifications and variat.;~ons o.f the present invent,zon z~ay be irtplemented_ ~'~e foregoing descz'~p~iare and the'=a114wi12g o7.aims arc intended to cover all s~cm :nodi~2ca~.:ians anti var~.a~.ion5.
Claims (20)
1. An optical panel comprising:
a plurality of stacked optical waveguides, wherein each waveguide has an inlet face and an outlet face at opposing ends of each waveguide, and wherein each waveguide is formed of a core in contact with at least one cladding layer, wherein the at least one cladding layer includes at least one black layer; and at least one redirector connected to the inlet face of each of at least two waveguides;
wherein the at least one black layer has a first thickness, and wherein the core has a second thickness, and wherein the first thickness is at least one multiple of the second thickness.
a plurality of stacked optical waveguides, wherein each waveguide has an inlet face and an outlet face at opposing ends of each waveguide, and wherein each waveguide is formed of a core in contact with at least one cladding layer, wherein the at least one cladding layer includes at least one black layer; and at least one redirector connected to the inlet face of each of at least two waveguides;
wherein the at least one black layer has a first thickness, and wherein the core has a second thickness, and wherein the first thickness is at least one multiple of the second thickness.
2. The optical panel of claim 1, wherein the first thickness is at least two times greater than the second thickness.
3. The optical panel of claim 1, wherein the first thickness is at least four times greater than the second thickness.
4. The optical panel of claim 1, wherein said at least one redirector redirects incoming light to the core of at least one of the plurality of inlet faces.
5. The optical panel of claim 4, wherein said redirector comprises a prismatic structure.
6. The optical panel of claim 5, wherein said prismatic structure comprises a transmissive light redirecting element.
7. The optical panel of claim 1, wherein said cores comprise at least one polymer.
8. The optical panel of claim 1, wherein said cores comprise plastic.
9. The optical panel of claim 1, wherein said cores comprise glass.
10. The optical panel of claim 1, wherein said cores are each in the range of about .001 inches to about .020 inches in thickness.
11. The optical panel of claim 1, wherein the plurality of outlet faces form an optical panel outlet face, wherein the optical panel outlet face comprises at least 1/2 black layer by surface area.
12. The optical panel of claim 1, wherein the plurality of outlet faces form an optical panel outlet face, wherein the optical panel outlet face comprises at least 4/5 black layer by surface area.
13. The optical panel of claim 1, wherein the black layer of each waveguide extends to the inlet face.
14. The optical panel of claim 1, wherein the black layer of each waveguide extends through said redirector.
15. The optical panel of claim 1, further comprising a diffuser fastened to at least one outlet face.
16. The optical panel of claim 1, further comprising a diffuser included in at least one outlet face.
17. The optical panel of claim 1, further comprising a light generator which generates light incident on said redirector.
18. The optical panel of claim 17, wherein said light generator includes a light source.
19. The optical panel of claim 18, wherein said light generator further includes a light modulator; and imaging optics.
20. The optical panel of claim 18, wherein the light from said light source is modulated by said light modulator to defied pixels.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/861,459 | 2001-05-18 | ||
| US09/861,459 US6571044B2 (en) | 2001-05-18 | 2001-05-18 | High contrast display panel and a method of making a high contrast display panel |
| PCT/US2002/015751 WO2004023176A1 (en) | 2001-05-18 | 2002-05-17 | A high contrast display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2454550A1 true CA2454550A1 (en) | 2002-11-18 |
Family
ID=25335853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002454550A Abandoned CA2454550A1 (en) | 2001-05-18 | 2002-05-17 | A high contrast display panel |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6571044B2 (en) |
| EP (1) | EP1428050A4 (en) |
| JP (1) | JP2005520218A (en) |
| CA (1) | CA2454550A1 (en) |
| WO (1) | WO2004023176A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7187831B2 (en) * | 2004-04-26 | 2007-03-06 | Brookhaven Science Associates | Optical panel system including stackable waveguides |
| WO2007149898A2 (en) * | 2006-06-21 | 2007-12-27 | Ronald Smith | Optical display system and method |
| US7412131B2 (en) * | 2007-01-02 | 2008-08-12 | General Electric Company | Multilayer optic device and system and method for making same |
| US20080285125A1 (en) * | 2007-05-18 | 2008-11-20 | Fujifilm Manufacturing U.S.A. Inc. | Optical panel for front projection under ambient lighting conditions |
| US20080291169A1 (en) * | 2007-05-21 | 2008-11-27 | Brenner David S | Multimodal Adaptive User Interface for a Portable Electronic Device |
| US7496263B2 (en) * | 2007-06-07 | 2009-02-24 | Fujifilm Manfacturing U.S.A. Inc. | Thermosetting optical waveguide coating |
| US20080305255A1 (en) * | 2007-06-07 | 2008-12-11 | Fujifilm Manufacturing U.S.A. Inc. | Optical waveguide coating |
Family Cites Families (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3253500A (en) | 1964-05-11 | 1966-05-31 | American Optical Corp | Doubly clad light-conducting fibers with the outer cladding being partially light absorbing |
| US3874783A (en) | 1972-08-02 | 1975-04-01 | American Optical Corp | Numerical aperture expansion in fiber optic devices |
| US4116739A (en) | 1976-11-26 | 1978-09-26 | New York Institute Of Technology | Method of forming an optical fiber device |
| US4344668A (en) | 1980-03-17 | 1982-08-17 | Hughes Aircraft Company | Fiber optic light traps for electro-optical display devices |
| US4418986A (en) | 1981-04-07 | 1983-12-06 | Mitsubishi Rayon Co., Ltd. | Rear projection screen |
| US4469402A (en) | 1981-06-15 | 1984-09-04 | Mitsubishi Rayon Co., Ltd. | Rear projection screen |
| US4586781A (en) | 1982-07-30 | 1986-05-06 | Hughes Aircraft Company | Diffraction optics diffusing screen |
| JPS61208041A (en) | 1985-03-11 | 1986-09-16 | Mitsubishi Rayon Co Ltd | Back face projection screen |
| US5274406A (en) | 1987-12-29 | 1993-12-28 | Asahi Kogaku Kogyo Kabushiki Kaisha | Image projecting device |
| FR2626700B1 (en) | 1988-02-03 | 1992-12-04 | Castel Francois Du | VERY LARGE DIMENSIONS DISPLAY |
| US5422691A (en) | 1991-03-15 | 1995-06-06 | Seiko Epson Corporation | Projection type displaying apparatus and illumination system |
| US5481385A (en) | 1993-07-01 | 1996-01-02 | Alliedsignal Inc. | Direct view display device with array of tapered waveguide on viewer side |
| US5764845A (en) | 1993-08-03 | 1998-06-09 | Fujitsu Limited | Light guide device, light source device, and liquid crystal display device |
| GB2282671B (en) | 1993-10-08 | 1997-12-10 | Durand Ltd | Diffusing and depixelating means |
| US5381502A (en) | 1993-09-29 | 1995-01-10 | Associated Universities, Inc. | Flat or curved thin optical display panel |
| US5455882A (en) | 1993-09-29 | 1995-10-03 | Associated Universities, Inc. | Interactive optical panel |
| US5521725A (en) | 1993-11-05 | 1996-05-28 | Alliedsignal Inc. | Illumination system employing an array of microprisms |
| JPH08338916A (en) * | 1995-06-12 | 1996-12-24 | Hamamatsu Photonics Kk | Fiber optical plate |
| JP3541576B2 (en) | 1995-10-25 | 2004-07-14 | ミノルタ株式会社 | Imaging optics |
| US5668907A (en) | 1996-01-11 | 1997-09-16 | Associated Universities, Inc. | Thin optical display panel |
| US5625736A (en) | 1996-01-11 | 1997-04-29 | Associated Universities, Inc. | Black optic display |
| JPH09265264A (en) | 1996-03-27 | 1997-10-07 | Casio Comput Co Ltd | Display device |
| US5914760A (en) | 1996-06-21 | 1999-06-22 | Casio Computer Co., Ltd. | Surface light source device and liquid crystal display device using the same |
| US5940565A (en) * | 1996-07-24 | 1999-08-17 | Hamamatsu Photonics K.K. | Fiber optic device, light receiving member, and pattern acquisition apparatus |
| US6012816A (en) | 1996-10-08 | 2000-01-11 | Beiser; Leo | Optical projection apparatus and method |
| JPH10160948A (en) * | 1996-12-04 | 1998-06-19 | Hamamatsu Photonics Kk | Fiber optic plate |
| JP2858656B2 (en) | 1997-02-14 | 1999-02-17 | 日立電線株式会社 | Optical wavelength multiplexer / demultiplexer |
| US6487350B1 (en) * | 1998-07-16 | 2002-11-26 | Brookhaven Science Associates | Multi-clad black display panel |
| US6222971B1 (en) * | 1998-07-17 | 2001-04-24 | David Slobodin | Small inlet optical panel and a method of making a small inlet optical panel |
| US6002826A (en) | 1998-08-28 | 1999-12-14 | Brookhaven Science Associates | Thin display optical projector |
| US6301417B1 (en) | 1998-08-31 | 2001-10-09 | Brookhaven Science Associates | Ultrathin optical panel and a method of making an ultrathin optical panel |
| US6259855B1 (en) * | 1998-12-02 | 2001-07-10 | 3M Innovative Properties Co. | Illumination device and method for making the same |
| US6317545B1 (en) * | 1999-09-01 | 2001-11-13 | James T. Veligdan | Stepped inlet optical panel |
-
2001
- 2001-05-18 US US09/861,459 patent/US6571044B2/en not_active Expired - Fee Related
-
2002
- 2002-05-17 CA CA002454550A patent/CA2454550A1/en not_active Abandoned
- 2002-05-17 JP JP2004533978A patent/JP2005520218A/en not_active Withdrawn
- 2002-05-17 WO PCT/US2002/015751 patent/WO2004023176A1/en not_active Application Discontinuation
- 2002-05-17 EP EP02807659A patent/EP1428050A4/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| US6571044B2 (en) | 2003-05-27 |
| US20020172480A1 (en) | 2002-11-21 |
| EP1428050A4 (en) | 2005-06-29 |
| EP1428050A1 (en) | 2004-06-16 |
| JP2005520218A (en) | 2005-07-07 |
| WO2004023176A1 (en) | 2004-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4915479A (en) | Liquid crystal display illumination system | |
| US6685792B2 (en) | Method of making a small inlet optical panel | |
| US6519400B2 (en) | Ultrathin optical panel and a method of making an ultrathin optical panel | |
| JP4205945B2 (en) | High contrast front projection display panel and method of manufacturing high contrast front projection display panel | |
| US20020186465A1 (en) | Ultrathin mesh optical panel and a method of making an ultrathin mesh optical panel | |
| US6487350B1 (en) | Multi-clad black display panel | |
| US20020048438A1 (en) | Transparent seam display panel and a method of making a transparent seam display panel | |
| CA2454550A1 (en) | A high contrast display panel | |
| CA2383702A1 (en) | Stepped inlet optical panel | |
| US4712869A (en) | Three dimensional stacked reproduction screen | |
| US7477814B2 (en) | Method of making a louver device for a light guide screen | |
| EP1016901A2 (en) | Image reproduction device with projection screen for back-projection and sound emission | |
| US20060176451A1 (en) | Fiber optic rear projection display | |
| JPH06324282A (en) | Solar light collection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |