Nyob hauv lub ntiaj teb niaj hnub no, txhua qhov kev cob qhia, kev sib tham hauv kev ua haujlwm thiab txawm tias cov lus qhia hauv tsev kawm tsis ua tiav yam tsis muaj kev nthuav qhia tsim nyog. Thiab tsis muaj qhov xav tsis thoob, vim tias nrog kev pab ntawm cov duab tib neeg nqus cov ntaub ntawv sai dua thiab zoo dua. Txhawm rau nthuav tawm cov khoom lag luam, cov ntaub ntawv, tshaj tawm lossis ib qho duab ntawm lub vijtsam rau lwm tus, nws txaus los siv lub computer, TV lossis cov cuab yeej tshwj xeeb rau kev saib cov duab kos. Peb yuav tham txog lub npe ntawm cov cuab yeej rau kev saib slides, nrog rau cov hom ntawm cov cuab yeej no.
Qhov no yog dab tsi?
Yog tias ib tug neeg tseem tsis tau nco txog lub npe ntawm cov khoom siv swb, nws yog lub projector. Cov khoom siv zoo li no tso cai rau koj kom tau txais cov duab ntawm lub vijtsam chaw taws teeb uas siv txoj hauv kev ntawm geometric projection.
Cov khoom siv no tau tshwm sim hauv kev lag luam hluav taws xob tau ntev heev, tab sis tsuas yog ob peb xyoos dhau los lawv tsis yog "kev txaus siab" rau cov neeg nplua nuj, tab sis ib qho txheej txheem uas tseem ceeb uas tsis tseem ceeb thaum kev nthuav qhia tom haujlwm lossis hauv tsev kawm ntawv. Ntawm tus nqi ntawm cov khoom siv rau saib slides yog tam sim no yuav luag zoo tib yam rau widescreenTVs, yog li txhua tus neeg siv khoom lossis tuam txhab tuaj yeem them taus yuav ib qho.
Hom projectors los ntawm qhov loj
Ua ntej tshaj plaws, lawv tau txiav txim siab faib cov cuab yeej no raws li lawv qhov ntev. Nyob ntawm qhov parameter no, lawv yog:
- Stationary, uas yog qhov loj tshaj plaws, kim tshaj plaws, tab sis cov khoom siv ua haujlwm. Xws li cov projectors raug ntsia rau hauv qhov chaw nruj me ntsis, xws li DVD players thiab cov khoom siv zoo sib xws. Lawv feem ntau siv los ntawm ob lub tuam txhab loj thiab cov neeg siv zoo tib yam hauv tsev. Hauv cov khoom siv nyob ruaj ruaj rau saib slides, ntxiv rau kev ua haujlwm siab, muaj lwm yam nta. Piv txwv li, ntau yam kev sib tshuam niaj hnub, kev txawj ntse tswj, thiab lwm yam.
- Portable, uas, tsis zoo li yav dhau los version, tuaj yeem txav los ntawm qhov chaw mus rau qhov chaw, uas yog qhov tseem ceeb tshwj xeeb, piv txwv li, rau kev nthuav qhia kev kawm. Txawm hais tias lawv yog cov compact, lawv yuav luag zoo li cov khoom siv nyob ruaj ruaj raws li qhov zoo, yam ntxwv thiab kev ua haujlwm.
- Pocket-loj, zoo meej rau cov neeg siv uas siv sijhawm tag nrho lawv lub sijhawm txav mus los. Cov khoom siv no tuaj yeem nqa nrog koj txhua qhov chaw thiab txawm li cas los xij koj nyiam, vim tias qhov nruab nrab ntawm cov khoom siv no tsuas yog 200-300 g.
- Ultraportable projectors. Lawv yog cov compact dua li cov khoom siv hauv hnab tshos, tab sis tsis ua haujlwm. Tsim nyog tsuas yog ib qho cuab yeej ntxiv rau kev tsim cov kev nthuav qhia yooj yim.
Type of projectors bydaws teeb meem
Txhua tus saib swb kuj raug cais raws li lwm yam. Piv txwv li, los ntawm kev daws teeb meem, uas yog, los ntawm tus nqi uas txiav txim siab tus naj npawb ntawm cov dots (pixels) ib cheeb tsam (inch). Nyob ntawm qhov parameter no, muaj:
- Regular projectors: SVGA (800 x 600), XGA (1024 x 768) and SXGA+ (1400 x 1050), 4:3 nam ratio.
- Wide projectors: WXGA (1280 x 768, 5:3), WUXGA (1920 x 1200, 8:5), HD 720p (1280 x 720) thiab Full HD 1080p (1980 x 1080). Cov tom kawg yog cov qauv tshaj plaws hauv kev lag luam hluav taws xob niaj hnub. Qhov sib piv ntawm ob qhov projectors yog tus qauv - nws yog 16: 9.
Tab sis thaum xaiv, koj yuav tsum tau ua tib zoo mloog tsis yog rau qhov kev daws teeb meem ntawm lub cuab yeej rau kev saib slides. Hom cov ntxaij vab tshaus ntawm cov cuab yeej no kuj ua lub luag haujlwm tseem ceeb. Txhua tus tuaj yeem tsim cov duab sib txawv, txawm tias muaj cov qauv tsim nyog. Yog li ntawd, kom tau txais cov slides zoo tiag tiag, koj yuav tsum pib los ntawm qhov piv ntawm qhov kev daws teeb meem thiab qhov screen loj ua ke.
Hom projectors los ntawm lawv cov haujlwm
Hnub no, muaj ob qho tib si qub thiab tshiab ntawm kev lag luam thev naus laus zis. Tau kawg, cov khoom tshiab muaj kev ua haujlwm nplua nuj, thaum cov qauv yav dhau los tsis tuaj yeem xav tsis thoob rau cov neeg siv niaj hnub no. Yog li ntawd, txhawm rau kom tsis txhob ua yuam kev nrog kev xaiv cov cuab yeej, muaj qhov kev faib tawm no:
- overhead scopes;
- slide projectors;
- npisov;
- multimedia devices.
Codoscopes
Feem ntau cov khoom siv no hu ua graphic projectors. Lub hauv paus ntsiab lus ntawm lawv txoj haujlwm yog qhov yooj yim heev: qhov projected thawj (daim duab, daim duab, daim duab kos rau ntawm ib qho tshwj xeeb pob tshab zaj duab xis) yog superimposed nyob rau hauv lub condenser, thiab vim hais tias ntawm ib tug ntsug nyob rau hauv lub lens thiab daim iav teem ntawm lub kaum sab xis, lub teeb hloov txoj hauj lwm. mus rau kab rov tav, tsoo lub vijtsam, uas tuaj yeem yog phab ntsa zoo tib yam lossis daim kab dam dawb.
Tam sim no cov khoom siv rau saib slides tsis tau tsim thiab siv tsis tau, vim lawv muaj ntau yam tsis txaus. Piv txwv li, PCs thiab laptops tsis tuaj yeem txuas nrog lawv, thiab tsim cov duab rau kev nthuav qhia yuav siv sij hawm ntev heev.
Cov qauv nrov: "Lector-2000", "Peleng-2400", "Liter-1400".
Slide projectors
Tseem cov khoom siv zoo sib xws hu ua overhead projectors. Qhov tseeb, cov no yog cov analogues zoo dua ntawm codoscopes. Lawv kuj tau tsim los saib tsuas yog cov duab tseem kos rau ntawm cov pob tshab. Tsuas yog qhov zoo ntawm cov khoom siv saum toj kawg nkaus projectors yog qhov yooj yim ntawm kev siv. Yog hais tias nyob rau hauv lub dhau los version nws yog tsim nyog los manually superimpose cov duab ntawm lub condenser (ib txhia kuj kos rau ntawm lawv tus kheej), ces overhead projectors, piv txwv li, carousels, cawm cov neeg siv los ntawm xws li kev tsim txom. Hauv cov khoom siv zoo li no, tshwj xeeb "khw" yog siv, qhov twg mus txog tsib caug tuaj yeem muab tso rau hauv ib lub sijhawm.me me slides nyob rau hauv.
Hmoov tsis zoo, cov khoom siv tam sim no tsis tshua siv los tsim kev nthuav qhia. Lawv qhov teeb meem tseem ceeb thiab tsuas yog qhov tsis muaj peev xwm txuas rau PC lossis laptop.
Cov qauv nrov: "Diana-207", "Alpha-35-50", "Spark", "Lector-600", "Peleng-600", "Lub Teeb", thiab lwm yam.
Npis Sov
Yog tias koj xav tau los ua ib qho khoom opaque (daim ntawv luam ntawm nplooj ntawv, kos duab rau ntawm daim ntawv, thiab lwm yam), ces lub tshuab no zoo meej rau kev saib cov slides. Cov yam ntxwv ntawm lub episcope kuj yog nyob rau hauv qhov tseeb hais tias nws tsis tas yuav tsum tau npaj rau kev ua hauj lwm. Nws yog ib qho yooj yim mus use thiab qhia tau hais tias ib tug ncaj high-zoo duab. Thiab txhua yam tuaj yeem ua cov khoom nthuav qhia: los ntawm phau ntawv mus rau ib daim duab kos rau ntawm nplooj ntawv sau.
cov khoom siv niaj hnub
Thiab thaum kawg, cov cuab yeej siv ntau tshaj plaws rau kev saib slides yog multimedia projector. Nyob ntawm cov thev naus laus zis raws li lub hauv paus ntawm cov cuab yeej tsim, lawv paub qhov txawv:
- DLP projectors uas tsim cov duab ua tsaug rau lub matrix thiab ob peb daim iav, txhua tus tig los ntawm kev cuam tshuam ntawm cov cim tshwj xeeb. Cov khoom siv zoo li no qhia cov duab zoo heev nrog cov ntsiab lus sib sib zog nqus, uas yog vim li cas lawv thiaj li kim dua li lawv cov counterparts.
- LCoS-projectors uas tsis ua haujlwm qis dua rau cov khoom siv nrog DLP-matrix thiab txawm tias me ntsis zoo dua li cov khoom siv LCD. Kev txiav txim los ntawm cov neeg siv tshuaj xyuas, cov khoom siv zoo li no qhiadaim duab meej meej, tsis pom qhov muag plooj thiab "daim phiaj" nyhuv.
- LCD projectors uas yuav luag tawm ntawm kev tsim khoom. Lawv ua haujlwm siv cov matrix liab, xiav, ntsuab xim thiab lub teeb los ntawm lub teeb. Cov neeg siv tshuaj xyuas txog cov khoom no yog qhov sib txawv heev. Qee tus nco ntsoov tias rau tus nqi me me, LCD projectors ua haujlwm ruaj khov thiab pom cov duab zoo. Lwm tus hais tias cov duab ntawm cov qauv feem ntau tau txais nrog "daim phiaj" nyhuv.
- CRT-projectors (CRT) yog qhov txhim khu kev qha, ua haujlwm ruaj khov nrog cov duab zoo. Qhov tsis zoo ntawm cov khoom siv no tsuas yog qhov nyuaj ntawm kev teeb tsa, qhov hnyav thiab tus nqi siab hauv khw.
Nrov nrov multimedia projectors: Acer X117H, Benq MS, Epson EB, Tecro PJ, Vivitek DW, Asus S1, thiab lwm yam.
