Hnub no, cov projectors tau siv dav hauv tsev thiab ntau lub koom haum, cov ntaub ntawv tso tawm cov cuab yeej siv los tshaj tawm cov duab rau hauv daim ntaub tshwj xeeb siv los ua lub vijtsam. Yog li ntawd, cov duab projected yog loj thiab haum rau lub qhov muag. Nyob rau hauv cov nqe lus ntawm cov duab zoo, lawv yog me ntsis inferior rau TVs. Kev ua lag luam tam sim no yog dej nyab nrog cov projectors rau txhua tus saj. Thaum xaiv cov khoom siv hluav taws xob zoo li no, koj yuav tsum paub meej tias cov haujlwm yuav raug muab rau lub cuab yeej. Tom qab tag nrho, cov qauv niaj hnub sib txawv ntawm ib leeg tsis yog nyob rau hauv chav kawm ntawv thiab cov peev txheej, tab sis hauv cov duab tso zis technologies. Cov ntaub ntawv hais txog kev tsim cov projectors thiab lawv txoj haujlwm tuaj yeem pab xaiv.
Type of projectors
Feem ntau, thaum peb hnov txog cov projectors, peb xav txog ib lub gadget uas tau nruab rau hauv ib qho chaw. Hom khoom siv no rau kev xa tawm cov ntaub ntawv mus rau lub dav hlau ntsug yog qhov xav tau zoo, txawm hais tias nws tsis yog ib qho nkaus xwb. Cov khoom siv ruaj ruaj, raws li txoj cai, tau nruab rau qhov siab tshaj plaws, txij li cov tuam ntxhab tsis txwv los ntawm qhov loj ntawm rooj plaub. Lawvnyuaj coj nrog koj, tab sis tus neeg siv tau txais ib tug haib technical stuffing. Kuj tseem muaj cov cuab yeej nqa tau yooj yim, cov projectors no yooj yim nqa mus rau kev nthuav qhia hauv ntau qhov chaw. Lawv muab cov kev ua tau zoo nrog kev compactness. Cov txheej txheem ua haujlwm tseem nyob rau theem zoo ntawm no.
Tab sis cov tuam txhab tsis tso tseg, sim ua kom qhov loj ntawm cov khoom siv me dua. Qhov tshwm sim yog qhov pom ntawm cov khoom siv hauv hnab tshos thiab cov projectors rau cov khoom siv mobile nrog qhov me me. Qhov hnyav ntawm thawj tsis tshaj 300 grams. Rau cov neeg uas tab tom txav mus los, tus qauv uas haum rau hauv koj lub hnab ris yog qhov pom tiag tiag. Txawm li cas los xij, kom ntseeg tau tias muaj kev txav tau yooj yim, cov khoom siv tau raug txiav me ntsis. Cov qauv me tshaj plaws muaj peev xwm txuas nrog cov xov tooj smartphones, uas tso cai rau koj los tso saib cov duab ntawm lub xov tooj screen. Lawv yog cov hnyav thiab siv tau yooj yim, tab sis kev ua haujlwm muaj txiaj ntsig yog qhov txwv hnyav.
Applications
Tsis tas li ntawd, cov projectors tau muab faib ua chaw ua haujlwm thiab hauv tsev. Cov cuab yeej siv rau hauv tsev tso saib cov duab dav dav nrog qhov sib txawv siab thiab qhov tseeb, thiab tseem muaj lub suab zoo, vim tias koj tuaj yeem txaus siab saib cov yeeb yaj kiab uas tuaj yeem ua rau cov neeg saib tag nrho hauv cov khoom tuab. Qhov loj ntawm lub teeb flux nyob rau hauv rooj plaub no yog qhov tseem ceeb thib ob. Raws li cov khoom siv rau kev ua haujlwm hauv chaw ua haujlwm, lawv muaj ntau yam.
Qhov txawv ntawm tsev thiab chaw ua haujlwm projectors yog dab tsi?
Lub tsev projectors txawv ntawm qhov chaw ua haujlwm projectors nyob rau hauv ob peb txoj kev, ntawm cov hauv qab no yuav tsum tau hais txog:
- npo hom;
- txuas thiab lawv lub hom phiaj;
- kev ua tau zoo;
- lub cev hnyav;
- xim rendering;
- suab nrov thiab teeb lub neej;
- built-in speaker.
Tsim thiab lub hauv paus ntsiab lus ntawm kev ua haujlwm
Feem ntau ntawm cov khoom siv projector txawv me ntsis. Lub arsenal ntawm cov khoom siv multimedia muaj xws li optical system, ib qho duab modulator, lub teeb, tu thiab txias tshuab, nrog rau cov khoom siv hluav taws xob. Lub teeb khoom, uas, qhov tseeb, yog lub projector, redirects lub teeb los ntawm lub teeb nrog ib tug concentrated flux mus rau lub dav hlau xav tau. Cov khoom siv no yog qhov nyuaj heev ntawm cov ntsiab lus, conditionally muab faib ua ob pawg. Thawj suav nrog cov qauv nrog CRT duab thev naus laus zis nruab nrog peb CRTs, thiab qhov thib ob suav nrog DLP, LCD thiab LCoS cov cuab yeej ua haujlwm siv cov qauv matrix ruaj khov. Cov tom kawg yog nrov dua vim lawv muab cov khoom zoo dua. Cov cuab yeej ntawm multimedia projectors, raws li txoj cai, suav nrog ZOOM lo ntsiab muag, ua tsaug rau lawv cov duab loj hloov pauv yam tsis tas yuav txav lub cuab yeej nws tus kheej. Hauv qee cov qauv, qhov ntev focal hloov pauv siv cov chaw taws teeb tswj, thiab lwm yam, los ntawm kev kho lub lens manually. Txoj kev tom kawg no tsis yooj yim, tab sis nws ua rau qhov chaw raug ntau dua.
Feem ntau siv tauhlau halide teeb muaj peev xwm ntawm emitting ntau luminous flux tshaj halogen teeb ntawm tib lub hwj chim. Tab sis thaum kawg ntawm lawv lub neej kev pab, lawv cov hauj lwm zoo yog halved. Kuj tseem siv rau hauv kev tsim cov teeb pom kev zoo yog qhov projection-hom teeb nrog kev siv hluav taws xob tsawg thiab lub teeb pom kev siab, lawv muaj ntau yam ntuj tso. Niaj hnub nimno projectors tau nruab nrog lub teeb pom kev ruaj khov, cov peev txheej tuaj yeem sib txawv ntawm 1000 txog 4000 teev. Txhawm rau hloov cov khoom no raws sijhawm, lub txee yog muab rau hauv txhua lub cuab yeej.
Lub optics yog lub luag haujlwm rau redirecting lub teeb rau lub vaj huam sib luag. Nws suav nrog cov khoom xws li iav, prisms, thiab cov iav tsom iav. Cov duab modulators yog lub luag haujlwm rau qib ntawm qhov ci, kev daws teeb meem thiab kev nrawm, niaj hnub no DLP, LCD, LCoS thiab CRT systems tau siv, lawv yuav tau tham txog kev nthuav dav tom qab. Lub luag haujlwm tseem ceeb hauv cov cuab yeej siv hluav taws xob yog cov cua txias, kiv cua tseem ceeb heev rau normalizing qhov kub ntawm lub teeb thiab hluav taws xob boards. Txhawm rau cuam tshuam nrog ntau qhov chaw xov xwm, cov projectors muaj qhov tsim nyog txuas ntawm lub cev - VGA, DVI, HDMI thiab lwm yam. Ntau tus qauv kuj tau nruab nrog USB chaw nres nkoj thiab Wi-Fi kev txhawb nqa.
DLP projectors
Hauv cov khoom siv zoo li no, lub luag haujlwm ntawm cov tub ntxhais yog ua los ntawm cov matrix tshwj xeeb uas tsim cov duab. Txhua daim iav yooj yim teb rau lub teeb liab los ntawm kev tig los ntawm lub kaum sab xis me. Qhov no tsim pixels hauv daim duab. Tus tsim ntawm DLP projectors tso cai rau lawv tso saib daim duab nrog qhov sib txawv siab thiab nrog ntau duacov duab ntxoov ntxoo ntxaws, uas yog lub ntsiab kom zoo dua ntawm kev siv tshuab. Cov qauv nruab nrog xws li ib qho system qhia lawv qhov zoo tshaj plaws nyob rau hauv cov nqe lus ntawm durability thiab kev cia siab rau, tshwj xeeb tshaj yog nyob rau hauv kev sib piv nrog rau cov cuab yeej ntawm yav dhau los tiam. Qhov downside yog tus nqi siab ntawm hom projectors.
LCD systems
Hauv ntau qhov xwm txheej, cov khoom siv nruab nrog trio ntawm cov kua siv lead ua kua matrices ntawm xiav, ntsuab thiab xim liab yog siv. Ib tug haib kwj ntawm lub teeb emanating los ntawm lub teeb tawg los ntawm lawv. Yog li, ib daim duab tshwm rau ntawm qhov screen. Cov tshuab no muaj ntau qhov zoo, ntawm lawv yog qhov yooj yim ntawm kev tsim kho thiab yooj yim ntawm kev ua haujlwm ntawm tus kheej cov khoom. LCD projectors tsim cov duab zoo, uas muaj qhov tseeb, xim saturation thiab ruaj khov. Tab sis cov tswv ntawm cov khoom siv no kuj tuaj yeem ntsib qhov tsis zoo, qee zaus muaj qhov tsis pom kev pom zoo zoo li cov hlau mesh.
Projectors nrog LCoS thev naus laus zis
Hom projector no tshwm sim tsis ntev dhau los. Lub zog ntawm cov thev naus laus zis no, ua ntej ntawm tag nrho, suav nrog cov ntsiab lus siab yam tsis muaj "daim phiaj" cuam tshuam. Lwm cov nta kuj tsim nyog saib xyuas. Cov khoom siv zoo li no yog ua raws li LCoS matrix, uas yog kua muaju ntawm silicon. Nyob rau hauv cov nqe lus ntawm kev nthuav dav, cov thev naus laus zis no tsis zoo rau LCD thiab DLP. Tab sis vim nws cov yam ntxwv tshwj xeeb, nws muaj kev cia siab zoo. Los ntawm kev siv LCoS crystals, ib daim duab tau txais raws li lub hauv paus ntsiab lus, thiab tsis yogtranslucent, raws li tau pom nyob rau hauv cov khoom siv LCD. Lub reflective matrix teb sai, peb zaug sai dua translucent tshuab. Tsis tas li ntawd, cov qauv tsim ntawm LCoS panels tso cai rau kev siv ntau dua ntawm cov nplais ntawm lub ntsej muag, uas ua rau nws muaj peev xwm ua kom cov pixels ntau ntxiv yam tsis tas yuav nce lub vaj huam sib luag. Thiab qhov no ncaj qha cuam tshuam rau qhov zoo ntawm daim duab. Tus tsim ntawm LCoS projectors tsis yog qhov nyuaj heev, uas txhais tau hais tias lawv pheej yig dua los tsim, vim tias tsis muaj cov khoom siv tshuab.
CRT projectors
Cov thev naus laus zis no yog tus pioneer hauv kev ua haujlwm ntawm qhov projectors. Thawj qhov piv txwv nrog cov duab tso tawm no tau tshwm sim hauv xyoo 1970. Cov khoom siv zoo li no yog ua raws li peb txoj kab hluav taws xob cathode nrog cov ntxaij lim dej liab, ntsuab thiab xiav. Lawv yog lub luag haujlwm rau kev tsim lub teeb flux dhau los ntawm cov tsom iav tsom iav, nws nkag mus rau hauv qhov screen hauv daim duab puv xim. Niaj hnub no, cov cuab yeej CRT tau dhau los ua qhov tsis tshua muaj, muab txoj hauv kev rau cov khoom siv niaj hnub no. Lub ncov ntawm kev muaj koob meej ntawm cov tshuab no yog qab peb. Txawm li cas los xij, nws ua tau zoo dua cov thev naus laus zis tshiab hauv ntau txoj hauv kev, xws li kev tsim cov xim, kev daws teeb meem, teeb lub neej thiab suab nrov acoustic. Nws qhov tsis muaj zog yog qhov nyuaj ntawm qhov chaw thiab qhov loj ntawm cov qauv uas nws siv. Tsis tas li ntawd, nws muaj qhov ci qis, yog li koj yuav tsum tau tua lub teeb kom pom nws.
Pros and cons of projectors
Projectors muab lub vijtsam loj, uas yog qhov kev sib cav muaj zog hauvkev nyiam ntawm kev yuav khoom no. Koj tuaj yeem tau txais cov ntaub ntawv tawm mus rau ntau tus neeg. Nws tag nrho yog nyob ntawm qhov nyiam thiab qhov loj ntawm chav tsev. Cov duab loj dua, qhov ci ntsa iab. Yog hais tias tus saib muaj peev xwm muaj dub tuav vim txawv video tawm tswv yim, ces yuav tsis muaj xws li teeb meem nrog lub projector. Nws yog ib qho yooj yim los kho qhov screen rau txhua hom ntawv. Cov cuab yeej ntawm digital projectors feem ntau suav nrog kev txhawb nqa rau 3D dluab yam tsis muaj kev poob zoo. Yog tias koj tsim ib puag ncig zoo los ntawm kev ua kom tsaus hauv chav, koj tuaj yeem tau txais daim duab zoo dua li LED saib.
Tseem muaj qhov tsis zoo. Cov khoom kim tshaj plaws ntawm lub projector yog lub teeb, thiab nws tawg li ib zaug txhua 4 xyoos. Nws qhov kev hloov pauv yuav suav nrog cov nqi nyiaj txiag ntau. Lub projector ua rau lub suab nrov vim yog lub zog txias ntawm lub teeb. Thaum saib cov yeeb yaj kiab lossis slideshow, koj yuav tsum ua siab ntev lub suab ntawm cov kiv cua khiav.
Txoj Cai Xaiv
Muaj ntau yam uas yuav tsum tau xav txog thaum nrhiav qhov projector zoo, cov khoom tso zis ib txwm xav tau qib zoo ntawm qhov ci. Txawm hais tias qhov ntsuas no tau cuam tshuam los ntawm kev ua haujlwm zoo, nws yog qhov zoo yog tias muaj kev xaiv ntawm hom, feem ntau muaj peb ntawm lawv - "Kev nthuav qhia", "Xim" thiab "Dynamic". Xim saturation kuj tsim nyog saib. Peb-matrix projectors tsim cov duab zoo nkauj dua, tshaj ib qho matrix li hauv qhov kev hwm no. Koj kuj yuav tsum tau saib ntawm qhov sib piv. Qhov kev ntsuas no tseem ceeb tshwj xeeb yog tias koj xav tau lub tsev ua yeeb yam. Kawg tab sis tsis tsawglub sijhawm yog qhov kev daws teeb meem ntawm daim duab, uas cuam tshuam rau qhov pom tseeb ntawm daim duab.
Zoo kawg
Niaj hnub nimno projectors yog cov cuab yeej nyuaj, tab sis tib lub sijhawm lawv tuaj yeem dhau los ua ib qho tseem ceeb rau kev lag luam thiab siv hauv tsev. Lawv muaj peev xwm muab cov neeg saib pom kev xav los ntawm kev saib vim qhov zoo uas TVs lossis cov saib tsis muaj. Qhov tseem ceeb yog xaiv kom txawj ntse.
