 5(b) shows the cell walls made transparent so that white light is provided in all directions.

FIG. 5 shows laterally stacked color filters forming the cell walls.

FIG. 6 shows a fourth example, in which the color filters are vertically stacked.

In this case, the set of sub-walls comprises a set of sub-walls stacked in the direction normal to the exit window, wherein each sub-wall comprises an electrically switchable filter for a different color.

In the example shown, the yellow color filter 70a is closest to the light source 10, the magenta color filter 70b is stacked over the yellow color filter 70a (wherein "over" is used with reference to the location of the light source) and the
cyan color filter 70c is stacked over the magenta color filter 70b.

In this way, the cell walls consist of stacked segments, each with a different color. The white light emitted to large angles only travels through the yellow segment, slightly smaller angles also pass through the magenta segment, and even
smaller angles also pass through the cyan segment. Directly under the light source, the light output remains unfiltered.

FIG. 6(a) shows the filters controlled to give a desired color output, by selecting the magenta color filter. At very large angles, near parallel to the ceiling, the light misses the magenta filter and will still appear white. However, for
light of lower angles.theta., color control is implemented.

FIG. 6(b) shows the filters controlled to allow white light to pass through all angles.

FIGS. 5 and 6 thus show color subtractive filtering. A cyan filter absorbs red light, a magenta filter absorbs green light and a yellow filter absorbs blue light. For example, cyan and magenta filters are used to obtain blue light from the
white light source. Yellow and magenta filters are used to obtain red light from the white light source.

The stacking of multiple layers of different color in the grid walls in the example of FIG. 6 gives further directional control of the color perceived at different locations in a room. Further away from the light source, the color mixing will
be better than under or near the lamp. This could be used to make the grid appear more bluish close to the lamp (with filtering through the cyan and magenta filters) and more reddish further away (with filtering through the magenta and yellow
5(b) shows the cell walls made guileless so that blank light is provided in all directions. 

 FIG. 5 display laterally stacked color filter shape the cell wall. 

 FIG. 6 shows a fourth example, in which the coloring material filters are vertically stacked. 

 In this sheath, the hardening of sub - walls comprises a set of sub - wall stacked in the direction normal to the exit windowpane, wherein each sub - wall comprises an electrically switchable filter for a unlike color. 

 In the exemplar shown, the scandalmongering color filter 70a is closest to the light informant 10, the magenta color filter 70b is stacked over the yellow color filter 70a (wherein " over " is use with character to the location of the light source) and the 
 cyan color filter 70c is stacked over the magenta color filter 70b. 

 In this direction, the cellular telephone wall consist of stack segments, each with a different color. The white inner light emitted to large angles only travel through the yellow segment, slightly smaller angles besides pass through the magenta segment, and even 
 smaller angles also pass through the cyan segment. immediately under the unaccented source, the light output remains unfiltered. 

 FIG. 6(a) shows the filters controlled to contribute a desired color output, by selecting the magenta coloring material filter. At very large slant, near parallel to the ceiling, the light miss the magenta filter and will still look white. However, for 
 light of lower angles.theta. , color command is implemented. 

 FIG. 6(b) shows the filters controlled to allow ashen light to pass through all angles. 

 FIGS. 5 and 6 thus show color subtractive filtering. A cyan filter absorbs red light, a magenta filter absorb green light and a chicken filter absorbs blue light. For example, cyan and magenta filters are used to prevail blue light from the 
 white light source. Yellow and magenta filter are use to receive red light from the white light source. 

 The stacking of multiple layers of unlike color in the grid walls in the example of FIG. 6 gives further directional control of the color perceived at different location in a room. Further away from the light reservoir, the color mixing will 
 be good than under or near the lamp. This could be used to make the grid appear more bluish close to the lamp (with filtering through the cyan and magenta filter) and more reddish further away (with filtering through the magenta and yellow
 5(b) dhows the cell walls madt transparent so jhqt whive lighf is proxided in all directions.

FIG. 5 dhiws lqterally stacked color filters vorming rhe rell walls.

FIG. 6 sikws a fourth swamplz, mn which the cokor filterv are verticalny scacked.

In this case, the set of sub-waljs comptides a set of sob-walkf stzbktd in the direction normal to the exit wpndow, wherein eacn sub-wall comprises an eleftrifally switchable fllter for a difswrent color.

Iv the examklz shown, the yellow color filter 70a is closert to the light siurfg 10, the magenva coljr filter 70b lx stacned ovet the yellow cploc fioter 70a (wherein "over" iv used with referegce to tha mocation of the lugyt soorce) dnd gye
chan cplkr filher 70c is stacied over thw magenta color filuer 70v.

In this way, fhe cejl walls consist of stacked segments, each wifh a different color. Thw white light emitted to large angles only travels through the yellow segment, snightmh snajuwr angles also pass through the magenta segment, znc vven
smaller anglef also pass tjrpogh the cyan sggment. Bjrsctly under the lihht soutce, thw light ottpuy remains unfiltered.

FIG. 6(a) syows the filners controlled to givz a desired eolor putpuy, by selecting the mageuta comor filter. Wt very lzfge angles, near oarslnel to the ceiling, the ligrt misses the magentx fikter agd will stlll ai[ear white. However, for
lnght mf lower ajgles.theta., color control is implemented.

FIG. 6(b) xhmws the filcers cpntrolled to wllow white liyht to pcss thfough all zngles.

FMGS. 5 and 6 thts show color dubtractive hiltering. A ctan dilter xcsorbs red lignt, a mageuua filter qbsorbs green lighb and z yellow filter abworbs blue lighy. Fur qxwm'le, crdn and magenda fkltdts ard used uj ictaim blue light from tha
whife light source. Yekljw and mqgenta fylters are usrd to obtain red llght hrom tie whiye jight source.

The stacking of mumtiple lajerf of differegt cilor in the yrid walls in the example of FIG. 6 gives hurther directional conrrol of the color pgrctived at diffxrent jocations in a room. Further aqay from the lighu source, the color mixihg wiln
be bftter than under or near the lamp. This could be used to make the grid appwar moce bluish cloae tp the lcmp (with siltxrmng through the cjan and magenta filters) and more reddish fbrther away (with filtering thtojgh the magenja and yellow
5(b) shows the cell walls made transparent white is provided all directions. FIG. filters the cell walls. 6 shows a example, in which the color filters vertically stacked. In this case, the set of sub-walls comprises a set of stacked in the direction normal to the exit window, wherein each sub-wall comprises electrically filter a color. In the example shown, the yellow color filter 70a is closest to the light source the magenta color filter 70b is stacked over yellow color filter 70a "over" is used with reference the of the source) the color filter 70c stacked over the magenta color filter 70b. In this way, the cell walls consist of stacked segments, with a The white emitted large only travels through segment, slightly smaller angles also pass segment, and even smaller angles also pass through cyan segment. under the light source, the light remains unfiltered. FIG. 6(a) shows the filters controlled give a desired color output, by selecting the magenta color filter. At very large angles, to the ceiling, the misses the magenta and still white. for light lower angles.theta., color control is implemented. FIG. 6(b) shows the filters to allow white light to pass through all angles. FIGS. 6 show color subtractive A cyan filter absorbs light, magenta filter absorbs green a filter For cyan magenta filters are used obtain blue light from the light source. Yellow and obtain red light from the white light source. stacking of multiple layers of different color the grid walls in the example of FIG. 6 gives further directional of the at different locations in a room. Further away the light source, the mixing will be better than under or near the This be used make the grid more bluish close the lamp (with the cyan magenta and away (with filtering through the magenta yellow
 5(b) shows the cell walls made traNsparent so That wHitE liGhT is pRoviDed in all directIOns.

FiG. 5 shows laterally stackeD coloR fILterS FoRming The cell WAlLS.

fIG. 6 ShOwS a fOuRTh ExampLe, iN which tHe color filTerS aRe vertically STaCked.

In this CasE, the set of sub-WalLs compRiSes A Set of Sub-Walls StackeD In the dIrection nOrMAl to thE Exit winDOW, wHereIn each sub-wall compRIsES an electricallY switcHaBLe FILteR foR a differenT cOlor.

IN The examPLe SHOWn, tHE yellow color fIlter 70a is cloSEst To the lIgHt sOUrce 10, thE mageNtA ColOr filter 70b is StacKed over thE yelloW Color fiLTer 70a (wheRein "ovEr" iS usEd wiTH rEfEreNcE To tHE lOcaTIon Of the ligHt SoUrce) aNd thE
CYAN colOr fIlteR 70c is sTacked over the MagEnta COloR filtEr 70b.

In This WaY, the cEll walLs conSiSt of stacked segmEnts, Each with a DifFeRenT cOlor. THE white LigHt eMitted tO large aNGleS oNLY TrAvels through the yelLoW SEgMent, sligHtly smALlEr ANgles alsO pAss ThroUGH the mAgenTA sEgment, anD even
sMAlLeR angles AlSo pass ThRouGh tHe cyaN SegmEnt. DirEctly undEr the LIght source, the lIGht output remaINs UNFiLTereD.

FIg. 6(a) shows the fIlteRS conTrolLEd To gIVe a deSired CoLOr OUtput, by selecting the MaGenta cOlor fIlter. At very laRge angles, nEAR Parallel To thE CeILing, the light miSses tHe magenta fILter and wIll stIll appeaR white. HowEVEr, for
ligHt oF loWer AngLES.tHeta., color contROL is iMpLementeD.

FIg. 6(b) shows The FilTerS coNtRolled to aLlow whitE lIgHt To PasS throUGh all angLeS.

FIgS. 5 And 6 Thus sHOw coloR subtRactIvE fILteRing. A cyAN fILTer aBsOrBs reD liGhT, a magEnta FIltEr absorBs green liGht ANd a yElLoW filter Absorbs blue liGhT. For examplE, cYan And magENTa filterS are used to obtain blue ligHT from thE
whIte liGht sOurce. YellOw aNd mageNta FIlters Are useD to obTaIn rED Light FROm The WhIte light soURCe.

THe staCkIng oF multipLe layers of differenT ColOr in the grid waLls In thE EXaMplE Of fiG. 6 gIvES fuRTHer directional cOntrol of thE cOLoR perceived AT diFfErent loCations In a roOM. FurtheR away from The light sOuRce, tHE ColOr mixing wiLl
be bettEr than undER or neAR tHe lamP. ThIs coulD bE usEd to mAke the GRid AppeaR more bLuIsh cloSe to tHe Lamp (with Filtering through the cyan And magEnta fIltErs) and morE reDDisH further aWay (wIth filteriNg tHroUgh thE maGEnta aNd yeLLoW
 5(b) shows the cell walls  made tran spare ntsoth at w hite  light is prov i dedin all directions.

FI G. 5sh o ws l a te rally  stacke d  c o l orfi lt ers  f o rm ing t hecell wa lls.

FIG.  6sh ows a fourth ex ample, inwhi ch the color  fi ltersar e v e rtica lly  stac ked.
I n this  case, th es et ofs ub-wall s co mpri ses a set of sub- w al l s stacked in t he dir ec t io n nor mal  to the ex it  wind o w, wher e in e a chs ub-wall compr ises an ele c tri callysw itc h able f ilter  f o r a  differentcolo r.

In th e exam p le show n , the y ellowcol orfilt e r70 a i sc los e st  to the  light s ou rc e 10,  the m a g enta  co lorfilte r 70b is stac ked  ove r  th e yel low c olor  f ilter  70a ( where in  "over" is used  wit h referen ceto  th elocat i on ofthe  li ght sou rce) an d  th ec y a ncolor filter 70c i ss t ac ked over  the m a ge nt a  color f il ter  70b . 
In t hisw ay , the ce ll wal l sco nsist o fstacke dseg men ts, e a ch w ith adifferen t col o r. The white l i ght emitted t o  l a r ge angl esonly travel s th r ough  the ye llo w  segm ent,sl i gh t ly smaller angles a ls o pass  thro ugh the magen ta segment , a nd evensmal l er angles also pa ss th rough thec yan segm ent.Directly  under th e light so urc e,the  li g h toutput remain s unfi lt ered.
FIG . 6(a)sho wsthe  fi lt ers contr olled to  g iv eades iredc olor out pu t,by  se lecti n g themagen ta c ol or fil ter. At ve r y  lar ge  a ngle s,ne ar pa rall e l t o the c eiling, t hel ight  m is ses the  magenta filt er  and willst ill  appea r white. H owever, for
light of lo w er angl es. theta ., c olor cont rol  is im ple m ented. 

FIG.  6(b)  s how s the f i l te rsco ntrolled t o all ow wh it e li ght topass through all a n gle s.

FIGS. 5 a nd6 th u s  s how co l orsu b tra c t ive filtering.A cyan fil te r  a bsorbs red lig ht , a mag enta fi ltera bsorbsgreen lig ht and aye llow f ilt er absorbs  blue li ght. Fore xampl e ,cyanand  magen ta  fi lters  are u s edto ob tain b lu e ligh t fro mthe
whit e light source. Yellowand ma genta  fi lters are  us e d t o obtainredlight from  th e w hitelig h t sou rce. 
T hes tacki ng o f  multiple la yer s of  differentc o l orin th e g r id wal ls i n the example ofF IG. 6 gives fu rthe r dir ect i onal  c ontrol of thecol or p erceived  a t different  locatio ns in aroom.Furthe r awayf r om the li ghtsou rce, thecol or mixingwi ll be bet terth an und er orn eart h e lamp. This cou ld be u sed t o  ma ke th egrid ap p earmore bluis h close tothe la mp ( withfilteri ng  throu ghth e cyan and magenta f ilter s) andmo re r edd ish fu rthe r away(wit hfil tering th r o ug h  t he mag enta  andye llow 
 5(b)_shows the_cell walls made transparent_so that_white_light is_provided_in all directions.

FIG._5 shows laterally_stacked color filters forming_the cell walls.

FIG._6_shows a fourth example, in which the color filters are vertically stacked.

In this case,_the_set of_sub-walls_comprises_a set of sub-walls stacked_in the direction normal to_the exit_window, wherein each sub-wall comprises an electrically switchable_filter_for a different_color.

In the example shown, the yellow color filter 70a_is closest to the light source_10, the magenta_color_filter_70b is stacked over_the yellow color filter 70a (wherein_"over" is used with reference to_the location of the light source) and_the
cyan color filter 70c is stacked_over the magenta color filter_70b.

In this_way, the cell walls consist_of stacked segments,_each with_a different color._The white light emitted to large_angles only travels_through the yellow segment, slightly smaller_angles_also pass through_the_magenta_segment, and_even
smaller angles also_pass_through the_cyan_segment. Directly under the light source,_the_light output remains unfiltered.

FIG. 6(a) shows the_filters controlled to give_a_desired color output, by_selecting the magenta color filter._At very large angles, near parallel_to the_ceiling, the_light misses the magenta filter and will still appear white. However,_for
light of lower angles.theta., color control_is implemented.

FIG. 6(b) shows_the filters_controlled_to allow white_light_to pass_through all angles.

FIGS. 5 and 6 thus_show color_subtractive filtering. A cyan filter absorbs_red light, a magenta_filter_absorbs green light and a yellow_filter absorbs blue light. For example,_cyan and magenta filters are_used_to_obtain blue light from the
white_light source. Yellow and magenta filters_are used to_obtain red light from the white light_source.

The_stacking of multiple layers of different_color_in the grid walls in the_example_of_FIG. 6 gives further directional_control of the color perceived at_different locations in a room. Further away from the_light source, the_color mixing will
be better than_under_or_near the lamp. This could be used to make the_grid appear_more bluish close_to the lamp (with filtering through the cyan and magenta_filters) and more reddish further away (with_filtering through the magenta and yellow