Video projectors nqa cov yeeb yaj kiab mus tom tsev nrog lub peev xwm los tso saib cov duab uas loj dua li qhov TV feem ntau tuaj yeem xa tuaj. Txawm li cas los xij, txhawm rau txhawm rau ua yeeb yaj kiab video ua tau zoo ntawm qhov zoo, nws yuav tsum muab cov duab uas yog ob qho tib si ci ntsa iab thiab nthuav dav xim ntau yam. Yuav kom ua tiav qhov no, yuav tsum muaj lub teeb pom kev muaj zog hauv lub teeb.
Ntau xyoo dhau los, ntau lub teeb pom kev siv thev naus laus zis tau ua haujlwm, nrog laser yog qhov tshiab tshaj plaws los nkag rau hauv qhov chaw. Cia wb mus saib qhov kev hloov pauv ntawm lub teeb siv thev naus laus zis siv hauv laser video projectors, thiab lasers hloov qhov kev ua si li cas.
Kev hloov pauv ntawm CRTs rau Teeb
Thaum pib, video projectors thiab projection TVs ua haujlwm CRT thev naus laus zis, uas koj tuaj yeem xav tias yog cov duab me me hauv TV. Peb lub raj (liab, ntsuab, xiav) muab ob qho tib si xav tau lub teeb thiab cov duab nthuav dav.
Txhua lub raj xa mus rau qhov screen ntawm nws tus kheej. Txhawm rau ua kom pom ntau yam xim, cov raj yuav tsum tau sib sau ua ke. Qhov no txhais tau tias kev sib xyaw xim tiag tiag tau tshwm sim ntawm qhov screen thiab tsis nyob hauv qhov projector.
Qhov teeb meem nrog cov hlab ntsha tsis yog tsuas yog xav tau kev sib koom ua ke los khaws kev ncaj ncees ntawm cov duab uas tau npaj tseg yog tias ib lub raj ploj lossis tsis ua haujlwm, tab sis kuj tseem yuav tsum tau hloov tag nrho peb lub raj kom lawv txhua tus xim xim tib yam. kev siv zog. Cov hlab kuj tau kub heev thiab yuav tsum tau txias los ntawm ib tug tshwj xeeb gel los yog kua. Txhawm rau sab saum toj, ob qho tib si CRT projectors thiab projection TVs siv ntau lub zog.
Functional CRT-based projectors tam sim no tsawg heev. Cov raj tau txij li tau hloov nrog lub teeb, ua ke nrog cov iav tshwj xeeb lossis xim lub log uas cais lub teeb rau hauv liab, ntsuab, thiab xiav, thiab ib qho "daim duab nti" uas muab cov duab nthuav dav.
Nyob ntawm hom duab nti siv (LCD, LCOS, lossis DLP), lub teeb los ntawm lub teeb, iav, lossis lub log xim, yuav tsum dhau los lossis cuam tshuam tawm ntawm daim duab nti, uas ua rau lub teeb pom kev zoo. daim duab koj pom ntawm qhov screen.
Teeb meem nrog teeb
LCD, LCOS thiab DLP "lamp-with-chip" projectors yog ib qho kev dhia loj los ntawm lawv cov CRT-raws li cov neeg ua ntej, tshwj xeeb tshaj yog nyob rau hauv lub teeb uas lawv tuaj yeem tawm. Txawm li cas los xij, cov teeb tseem nkim ntau lub zog tawm ntawm tag nrho lub teeb spectrum, txawm tias tsuas yog cov xim thawj xim liab, ntsuab, thiab xiav tiag tiag xav tau.
Txawm hais tias tsis zoo li CRTs, cov teeb tseem siv hluav taws xob ntau thiab ua kom sov, yuav tsum siv lub kiv cua uas muaj suab nrov kom txias.
Tsis tas li ntawd, txij li thawj zaug koj qhib lub tshuab ua yeeb yaj kiab, lub teeb pib ploj mus thiab nws yuav kub hnyiab los yog ploj mus (feem ntau tom qab 3,000 txog 5,000 teev). Txawm tias CRT qhov projection raj, loj thiab cumbersome li lawv, kav ntev heev. Lub neej luv luv ntawm cov teeb yuav tsum tau hloov lub sijhawm ntawm tus nqi ntxiv. Niaj hnub no qhov kev thov rau eco-friendly khoom (ntau lub teeb projector kuj muaj Mercury), hu rau lwm txoj hauv kev uas tuaj yeem ua tau txoj haujlwm zoo dua.
LED to the Rescue?
Ib qho kev xaiv rau cov teeb yog LEDs (Lub Teeb Emitting Diodes). LEDs me dua li lub teeb thiab tuaj yeem raug xa mus rau ib qho xim (liab, ntsuab, lossis xiav).
Nrog rau lawv qhov me me, qhov projectors tuaj yeem ua kom muaj zog ntau dua, txawm tias nyob hauv qee yam me me li lub xov tooj smartphone. LEDs kuj muaj txiaj ntsig zoo dua li cov teeb, tab sis lawv tseem muaj ob peb qhov tsis muaj zog.
- Ua ntej, LEDs feem ntau tsis ci li lub teeb.
- Thib ob, LEDs tsis emit teeb coherently. Qhov no txhais tau li cas yog tias, raws li lub teeb beams tawm ntawm LED nti-raws li lub teeb qhov chaw, lawv muaj ib tug nyiam mus rau me ntsis tawg. Txawm hais tias lawv muaj tseeb dua li lub teeb, lawv tseem ua haujlwm me ntsis.
Ib qho piv txwv ntawm ib qho video projector uas ntiav LEDs rau nws lub teeb ci yog LG PF1500W.
Nkag mus rau laser
Yuav daws cov teeb meem ntawm cov teeb lossis LEDs, siv lub teeb pom kev laser. Laser stands rau L ight A mplification by S timulated E mission ntawm Radiation.
Lasers tau siv txij li xyoo 1960 los ua cov cuab yeej hauv kev kho mob phais (xws li LASIK), hauv kev kawm thiab kev lag luam hauv daim ntawv laser pointers thiab kev soj ntsuam deb, thiab cov tub rog siv lasers hauv kev taw qhia, thiab raws li qhov ua tau. riam phom. Tsis tas li ntawd, Laserdisc, DVD, Blu-duab tshav, Ultra HD Blu-duab tshav, lossis CD player, siv lasers los nyeem cov pits ntawm lub disc uas muaj suab paj nruag lossis cov ntsiab lus video.
Lub Laser Ntsib Cov Video Projector
Thaum siv los ua video projector lub teeb ci, lasers muab ntau yam zoo dua cov teeb thiab LEDs.
- Coherence: Lasers daws qhov teeb meem tawg tawg los ntawm emitting lub teeb coherently. Raws li lub teeb tawm ntawm lub laser raws li ib leeg, nruj nqaj, "thickness" yog khaws cia nyob rau hauv qhov kev ncua deb tshwj tsis yog tias nws tau hloov los ntawm kev hla cov lo ntsiab muag ntxiv.
- Kev siv hluav taws xob qis: Vim qhov xav tau kom muaj lub teeb txaus rau lub projector kom pom cov duab ntawm lub vijtsam, cov teeb siv hluav taws xob ntau. Txawm li cas los xij, txij li txhua lub laser tsuas yog xav tau los tsim ib qho xim (zoo ib yam li LED), nws ua haujlwm zoo dua.
- Output: Lasers muab lub teeb tso zis ntau ntxiv nrog tsawg dua cov cua sov. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau HDR, uas yuav tsum muaj qhov ci ntsa iab kom ua tiav tag nrho.
- Gamut/saturation: Lasers xa kev txhawb nqa rau cov xim gamuts wider thiab ntau meej xim saturation.
- Virtually Instant: Lub sijhawm qhib / tawm yog ntau dua li qhov koj tau ntsib thaum tig lub TV qhib thiab tawm.
- Lifespan: Nrog lasers koj tuaj yeem cia siab 20, 000 teev ntawm kev siv lossis ntau dua, tshem tawm qhov xav tau hloov lub teeb lub sijhawm.
Ib yam li "LED TV," lub laser (s) hauv lub projector tsis tsim cov ntsiab lus tseeb hauv daim duab tab sis muab lub teeb ci uas ua rau cov projectors tso saib cov duab xim xim ntawm lub vijtsam. Txawm li cas los xij, nws yooj yim dua tsuas yog siv lo lus "laser projector" es tsis yog "DLP lossis LCD video projector nrog lub teeb laser."
YThe Mitsubishi LaserVue
Mitsubishi yog thawj zaug siv lasers hauv cov khoom siv yees duab projector-based. Xyoo 2008, lawv tau tshaj tawm LaserVue rear-projection TV. Lub LaserVue siv DLP-raws li qhov projection system ua ke nrog lub teeb ci laser. Hmoov tsis zoo, Mitsubishi tau txiav tag nrho lawv cov TVs tom qab (xws li LaserVue) hauv xyoo 2012.
Lub LaserVue TV ua haujlwm peb lub lasers, ib qho rau liab, ntsuab, thiab xiav. Peb lub teeb xim xim tau tshwm sim los ntawm DLP DMD nti, uas muaj cov duab nthuav dav. Cov duab uas tau tshwm sim tau tshwm sim ntawm qhov screen.
LaserVue TVs muab lub teeb pom kev zoo, qhov tseeb xim, thiab qhov sib txawv. Txawm li cas los xij, lawv tau kim heev (lub teeb 65-nti yog tus nqi ntawm $ 7,000) thiab txawm hais tias slimmer tshaj li feem ntau cov rear-projection TVs, lawv tseem bulkier dua Plasma thiab LCD TVs muaj nyob rau lub sij hawm.
Video Projector Laser Light Source Configuration Piv txwv
Cov duab saum toj no thiab cov lus piav qhia hauv qab no yog qhov dav; Tej zaum yuav muaj qhov txawv me ntsis nyob ntawm cov chaw tsim khoom lossis daim ntawv thov.
Txawm hais tias LaserVue TVs tsis muaj lawm, Lasers tau raug hloov kho rau kev siv los ua lub teeb pom kev zoo rau cov yeeb yaj kiab yeeb yaj kiab hauv ntau qhov kev teeb tsa.
RGB Laser (DLP)
Qhov kev teeb tsa no zoo ib yam li siv hauv Mitsubishi LaserVue TV. Muaj 3 lub lasers, ib qho uas tawm lub teeb liab, ib qho ntsuab, thiab ib qho xiav. Lub teeb liab, ntsuab, thiab xiav taug kev los ntawm lub de-speckler, nqaim "lub teeb yeeb nkab" thiab lub lens / prism / DMD Chip sib dhos, thiab tawm ntawm qhov projector mus rau ib qho screen.
RGB Laser (LCD/LCOS)
Ib yam li nrog DLP, muaj 3 lub lasers, tshwj tsis yog tias qhov hloov pauv ntawm DMD chips, peb lub teeb ci RGB tau dhau los ntawm peb lub LCD Chips lossis cuam tshuam 3 LCOS chips (RGB) los tsim cov duab. Txawm hais tias 3 laser system tam sim no siv rau hauv qee qhov kev lag luam xinesmas projectors, nws tsis yog tam sim no siv rau cov neeg siv khoom raws li DLP lossis LCD / LCOS projectors vim yog tus nqi. Muaj lwm txoj hauv kev, tus nqi qis dua uas yog nrov rau siv hauv qhov projectors: Laser / Phosphor system.
YLaser/Phosphor (DLP)
Cov txheej txheem no yog qhov nyuaj me ntsis raws li qhov xav tau ntawm cov lo ntsiab muag thiab daim iav xav tau los ua kom tiav cov duab, tab sis los ntawm kev txo cov lasers ntawm 3 mus rau 1, tus nqi ntawm kev siv tau txo qis heev. Hauv qhov system no, ib lub laser emits xiav lub teeb. Lub teeb xiav ces muab faib ua ob. Ib nqaj txuas ntxiv mus los ntawm tus so ntawm DLP lub teeb lub cav, thaum lwm qhov ntaus lub log tig uas muaj cov phosphor ntsuab thiab daj, uas, dhau los, tsim ob lub teeb ntsuab thiab daj.
Cov kab teeb ntxiv no koom nrog lub teeb xiav tsis pom kev, thiab tag nrho peb dhau los ntawm lub ntsiab DLP xim lub log, lub lens / prism sib dhos, thiab cuam tshuam tawm ntawm DMD nti, uas ntxiv cov duab cov ntaub ntawv rau cov xim sib xyaw. Daim duab xim tiav yog xa los ntawm lub projector mus rau ib qho screen. Ib qho DLP projector uas ntiav Laser / Phosphor xaiv yog Viewsonic LS820.
YLaser/Phosphor (LCD/LCOS)
Rau LCD / LCOS projectors, suav nrog Laser / Phosphor lub teeb zoo ib yam li DLP projectors, tshwj tsis yog tias tsis siv DLP DMD nti / Xim Log sib dhos, lub teeb yog dhau los ntawm 3 LCD chips lossis qhia tawm ntawm 3 LCOS chips. Txawm li cas los xij, Epson siv qhov sib txawv uas siv 2 lub lasers, ob qho tib si uas tawm lub teeb xiav.
Raws li lub teeb xiav los ntawm ib lub laser hla dhau lub teeb lub cav, lub teeb xiav los ntawm lwm lub laser ntaus lub log daj phosphor, uas, nyob rau hauv lem, splits lub teeb xiav beam rau liab thiab ntsuab teeb beams.. Cov teeb ci liab thiab ntsuab uas tau tsim tshiab tuaj yeem koom nrog cov kab teeb xiav uas tseem nyob thiab dhau mus rau lwm lub teeb lub cav. Ib qho Epson LCD projector uas siv ob lub laser ua ke nrog phosphor yog LS10500.
Laser/LED Hybrid (DLP)
Lwm qhov kev hloov pauv siv feem ntau los ntawm Casio hauv qee qhov DLP projectors yog Laser / LED hybrid lub teeb cav. Hauv qhov kev teeb tsa no, LED tsim lub teeb liab xav tau, thaum lub laser siv los tsim lub teeb xiav. Ib feem ntawm lub teeb xiav yog ces muab faib mus rau hauv ib lub teeb ntsuab tom qab ntaus lub phosphor xim log.
Lub teeb liab, ntsuab, thiab xiav kab teeb tom qab ntawd dhau los ntawm lub lens condenser thiab cuam tshuam los ntawm DLP DMD nti, ua tiav cov duab, uas yog tom qab ntawd tso rau ntawm lub vijtsam. Ib Casio projector nrog lub Laser / LED Hybrid Lub Teeb Cav yog XJ-F210WN.
Txoj kab hauv qab
Laser projectors muab kev sib xyaw ua ke zoo tshaj plaws ntawm cov teeb pom kev xav tau, xim qhov tseeb, thiab lub zog ua haujlwm rau ob qho tib si xinesmas thiab tsev ua yeeb yam siv.
Teeb-raws li projectors tseem muaj, tab sis kev siv LED, LED / laser, lossis laser qhov chaw teeb pom kev loj hlob. Lasers tam sim no siv nyob rau hauv ib tug tsawg tus naj npawb ntawm video projectors, yog li ntawd lawv yuav kim tshaj plaws. Cov nqi ntawm $ 1, 500 mus rau ntau tshaj $ 3, 000, tab sis koj kuj yuav tsum xav txog tus nqi ntawm lub vijtsam, thiab qee zaum, lo ntsiab muag.
Raws li qhov muaj ntau ntxiv thiab tib neeg yuav ntau chav, cov nqi tsim khoom yuav nqis los, ua rau cov nqi qis dua laser projectors. Kuj tseem xav txog tus nqi hloov cov teeb thiab tsis tas yuav hloov lasers.
Thaum xaiv lub yees duab projector-txawm tias hom teeb pom kev twg nws siv-ua kom nws haum rau koj qhov chaw saib, pob nyiaj siv, thiab tus kheej saj.
