Reflective zaj duab xis yog ib qho kev sib xyaw ua haujlwm tshiab tsim nyob rau hauv 50 xyoo tsis ntev los no. Micro prism reflective zaj duab xis tau tsim nyob rau xyoo 1980s. Vim nws qhov ci ntsa iab thiab ua haujlwm zoo, nws kov yeej qhov tsis txaus ntawm cov khoom siv prism yav dhau los, xws li lub kaum ntse ntse me me, kev soj ntsuam me me thiab asymmetric reflected beam. Yog li ntawd, nws yog ntau thiab ntau lug siv nyob rau hauv txoj kev loj tsheb yuav tsum tau siab brightness.
1. Reflective lub hauv paus ntsiab lus thiab cov qauv muaj pes tsawg leeg
1.1 txoj cai
Lub hauv paus ntsiab lus ntawm kev cuam tshuam ntawm micro prism reflective zaj duab xis yog ua raws li qhov teeb meem ntawm lub teeb los ntawm ib lub kaum ntse ntse hauv qhov chaw peb sab, cuam tshuam peb zaug ntawm peb lub dav hlau sib txuas, thiab tom qab ntawd rov qab los ntawm qhov xwm txheej qub, raws li pom hauv daim duab 1.
Raws li cov txheej txheem tsim khoom sib txawv, muaj ob hom kev xav ntawm qhov chaw prism: ib qho yog (tag nrho) kev xav ntawm huab cua resin interface, thiab lwm yam yog qhov cuam tshuam ntawm aluminium resin interface.
1.2 faib los ntawm cov qauv
Raws li ntau hom kev xav, cov qauv ntawm micro prism reflective zaj duab xis tuaj yeem muab faib ua ob hom (saib daim duab 2 thiab daim duab 3): coated reflective film (hu ua hom V sheeting hauv astm4956) thiab uncoated reflective film (hu ua hom IV sheeting hauv astm4956). Vim lub grey xim ntawm coated reflective zaj duab xis, lub lag luam zeem muag yog bleak.
Cov txheej txheem sib txawv ntawm ob qhov kev cuam tshuam zaj duab xis yog:
(1) Muaj huab cua nyob tom qab ntawm lub pyramid ntawm cov yeeb yaj kiab uas tsis muaj coated, yog li qhov kev xav tau yog tag nrho cov kev xav sab hauv, uas yuav tsum muaj huab cua ruaj khov tom qab lub pyramid. Yog li ntawd, muaj ib txheej sealing nyob rau hauv lub uncoated reflective zaj duab xis (saib daim duab 2) los tiv thaiv impurities xws li ya raws thiab plua plav los ntawm kev nkag mus rau hauv huab cua txheej, uas ua rau txo qis retroreflection coefficient.
(2) Coated reflective zaj duab xis pyramid yog coated nrog ib txheej ntawm hlau, feem ntau yog txhuas. Reflection tsuas yog tshwm sim ntawm cov resin aluminium interface. Coated reflective zaj duab xis tsis muaj txheej sealing.
(3) Vim tias cov yeeb yaj kiab uas tsis muaj coated yuav tsum raug kaw, muaj phab ntsa txhawb nqa. Los ntawm sab xub ntiag, nws yog pob zeb diamond lossis hexagonal lattice. Cov coated reflective zaj duab xis tsis.
2. Kev ua tau zoo ntawm micro prism reflective zaj duab xis
2.1 optical zog
Lub micro prism reflective zaj duab xis yog zoo dua li lub lens reflective zaj duab xis nyob rau hauv cov nqe lus ntawm reflective siv thiab dav lub kaum sab xis. Fig. 4 yog kev sib piv ntawm thawj qhov tseem ceeb ntawm kev siv zog ntawm peb hom khoom (0.2 ° saib lub kaum ntse ntse).
Lub ntsej muag lub ntsej muag ntawm yav dhau los micro prism reflective zaj duab xis yog asymmetric thiab qhov teeb meem zoo ntawm lub kaum sab xis yog me me, tab sis cov teeb meem no tau raug daws los ntawm kev tsim ntawm lub reflecting unit thiab nws cov array.
2.2 huab cua tsis kam
Txawm hais tias retroreflection coefficient ntawm micro prism reflective zaj duab xis txo los ntawm 50% tom qab ncav cuag lub neej kev pab cuam, nws cov retroreflection coefficient tseem tuaj yeem khaws cia ntawm 400 CD · lx-1 · m-2, uas yog ntau dua li ob hom kev cuam tshuam cov yeeb yaj kiab. , raws li pom nyob rau hauv daim duab 5 (0.2 ° saib lub kaum sab xis, - 4 ° tshwm sim lub kaum sab xis).
3. Kev tsim technology ntawm micro prism reflective zaj duab xis
3.1 thev naus laus zis
Txawm hais tias lub hauv paus ntsiab lus ntawm micro prism reflective zaj duab xis yog qhov yooj yim, kev tsim cov cuab yeej siv ntau yam kev qhuab qhia thiab kev ua haujlwm siab xws li cov ntaub ntawv science, optics, precision machinery manufacturing thiab lwm yam. Txhawm rau ua kom tiav, muaj plaub lub thev naus laus zis tseem ceeb rau kev tsim cov yeeb yaj kiab micro prism reflective.
3.1.1 cell qauv thiab nws array tsim
Cov tsoos prism retroreflective cov ntaub ntawv feem ntau muaj qhov tsis zoo hauv qab no:
(1) Lub kaum sab xis qhov xwm txheej zoo me me. Thaum lub kaum sab xis tshwm sim ntau dua 20 °, tag nrho cov kev xav hauv sab hauv ploj mus thiab qhov ci ntsa iab yuav luag ploj.
(2) Lub kaum sab xis saib me me, uas yog, tib neeg tuaj yeem pom lub teeb pom kev nyob deb, tab sis tsis nyob ze.
(3) Vim yog peb sab khoom ntawm lub teeb pom kev zoo, lub teeb pom kev zoo retroreflective muaj qhov tsis txaus ntseeg asymmetric duab. Yog li ntawd, muaj qhov sib txawv retroreflective ci ntsa iab thaum pom los ntawm qhov sib txawv scanning kaum.
Cov txheej txheem los daws cov teeb meem no feem ntau yog nyob ntawm tus qauv tsim ntawm cov qauv retroreflective thiab array, xws li hloov lub kaum sab xis ntawm peb lub dav hlau los ua kom lawv muaj qee yam kev faib tawm, los yog npaj cov khoom array raws li ib txoj cai. Txawm li cas los xij, vim yog cov qauv tsim thiab array tsim, nws yog qhov nyuaj heev los ua, luam thiab demould lub motherboard, yog li nws tsis yooj yim rau kev siv.
3.1.2 fabrication thiab replica ntawm motherboard
Vim tias qhov siab ntawm micro prism reflection unit yog 0.003 ~ 0.015in (xws li 0.078 2 ~ 0.381mm), cov duab tsis zoo, kev npaj ntawm lub dav hlau tsis tu ncua, thiab qhov yuav tsum tau ua rau lub smoothness ntawm lub forming nto yog siab heev, yog li lub motherboard xav tau precision machining. Lub phaj nws tus kheej tsis ncaj qha rau kev sib sau, cov nqi ua haujlwm yog kim, thaj chaw muaj kev txwv, thiab kev siv lub voj voog ntawm qhov tuag tsis siab. Cov pwm duplicate tuaj yeem tsim tau los ntawm kev siv tus qauv phaj replica thiab spliced rau hauv txhua qhov loj los pab txhawb kev tsim khoom.
3.1.3 kev txiav txim siab ntawm cov khoom siv hauv paus
Raws li micro prism reflective zaj duab xis, nws cov khoom tseem ceeb yog engineering plastics. Cov ntawv yas sib txawv yog xaiv raws li qhov sib txawv ntawm nws cov kev pabcuam kev ua haujlwm. Lub ntsiab indexes xam thiab daws teeb meem yog: huab cua tsis kam ntawm cov ntaub ntawv, preheating kev ua tau zoo thiab rheological zog ntawm yas ntawv puag, thiab lwm yam. Tam sim no, TID mas siv PVC, PC, PMMA thiab tsiaj raws li cov khoom sib txawv.
3.1.4 embossing tshuab
Vim hais tias lub micro prism reflective zaj duab xis muaj cov kev xav tau siab rau kev ua haujlwm kho qhov muag, nws qhov tseeb embossing kuj yog siab heev. Nyob rau hauv cov txheej txheem embossing, cov kev tsis zoo xws li cov dej tsis zoo, npuas thiab khawb tsis raug tso cai, thiab cov kev cai rau cov txheej txheem xws li kub thiab siab kuj hnyav heev.
4 daim ntawv thov kev cia siab
Vim lub siab tsis tshua muaj kev siv zog thiab kev ua tau zoo ntawm lub kaum sab xis ntawm micro prism reflective zaj duab xis, nrog rau kev txhim kho ntawm lub cev muaj zog ceev, kev loj hlob tsis tu ncua ntawm txoj kev loj thiab qhov tsis sib xws ntawm txoj kev, daim ntawv thov kev lag luam ntawm micro prism reflective zaj duab xis yuav ntau thiab dav. Txawm li cas los xij, lwm yam teeb meem tshwm sim los ntawm kev siv siab, xws li glare thiab qhov sib txawv ntawm cov qauv thiab keeb kwm yav dhau los hauv kev siv tswv yim, txiav txim siab tias micro prism reflective zaj duab xis tsis tuaj yeem hloov lub iav micro hlaws reflective zaj duab xis.
