Raws li ib qho tseem ceeb ntawm lub tshuab pom kev zoo, muaj koob yees duab feem ntau yog nruab rau lub tshuab sib dhos los hloov tib neeg lub qhov muag rau kev ntsuas thiab kev txiav txim siab. Yog li ntawd, xaiv lub koob yees duab zoo siab kuj tseem yog qhov tseem ceeb ntawm lub tshuab lub zeem muag kev tsim qauv.
Yog li, yuav ua li cas peb yuav tsum xaiv ib qho haumMuaj cov koob yees duab lens? Cov teeb meem dab tsi yuav tsum raug txiav txim siab thaum xaiv lub koob yees duab lub koob yees duab? Cia peb saib ua ke.
1.Kev txiav txim siab yooj yim rau kev xaiv cov koob yees duab lo ntsiab muag
①Xaiv CCD lossis CMOS lub koob yees duab raws li cov ntawv thov sib txawv
CCD Muaj cov duab ci ntsa iab yog tsuas yog siv rau cov duab tawm ntawm cov khoom txav. Ntawm chav kawm, nrog rau kev txhim kho ntawm cmos thev naus laus zis, Cmos Muaj koob yees duab tseem siv hauv ntau cov tshuab tso cav. CCD Muaj koob yees duab yog dav siv hauv kev kuaj pom kev tshuaj xyuas. CMOS muaj koob yees duab yog siv dav vim tias lawv tus nqi qis thiab tsis muaj zog siv fais fab.
Muaj koob yees duab yees siv nyob rau hauv cov kab ntau lawm
②Daws teeb meem ntawm cov koob yees duab lo ntsiab muag
Ua ntej, kev daws teeb meem yog xaiv los ntawm kev txiav txim siab qhov tseeb ntawm cov kwv uas tau pom lossis ntsuas. Yog tias lub koob yees duab pixel qhov tseeb = kev sib tham ntawm kev pom loj / koob yees duab daws teeb meem = kev daws teeb meem ntawm kev pom qhov loj / theoretical raug.
Yog tias tib daim teb ntawm kev pom yog 5mm thiab theoretical qhov tseeb yog 0.02mm, cov kev daws teeb meem yog 5/02 = 250. Txawm li cas los xij, txhawm rau nce kev ruaj ntseg ntawm lub system, nws tsis muaj peev xwm sib haum rau qhov ntsuas kom raug nrog tsuas yog ib lub pixel. Feem ntau, ntau tshaj 4 tuaj yeem xaiv, yog li lub koob yees duab xav tau kev daws teeb meem ib zaug ntawm 1000 thiab 1.3 lab pixels.
Thib ob, xav txog cov zis ntawm cov koob yees duab muaj kev soj ntsuam muaj txiaj ntsig zoo rau kev soj ntsuam lossis kev soj ntsuam thiab kev lees paub ntawm lub tshuab software. Yog tias nws yog VGA lossis USB cov zis, nws yuav tsum tau pom nyob rau ntawm saib, yog li kev daws teeb meem yuav tsum tau txiav txim siab. Tsis muaj teeb meem npaum li cas lub sijhawm daws teeb meem ntawm kev siv lub zeem muag yog nrogMuaj Cov Ntsej Muag Lub Koob Yees Duab, nws yuav tsis ua kom muaj kev txiav txim siab ntau yog tias kev daws teeb meem ntawm lub monitor tsis txaus. Lub siab daws teeb meem ntawm cov koob yees duab muaj kev pab yog siv cov npav nco lossis thaij duab.
③Daim Duabtus nqintawm kev muaj lub koob yees duab lens
Thaum cov khoom ntsuas tau ntsuas txav chaw, cov duab hluav taws xob lens nrog tus lej siab dua yuav tsum raug xaiv. Tab sis feem ntau hais lus, siab dua cov kev daws teeb meem, qis dua tus ncej.
④Txuam ntawm cov lo ntsiab muag
Lub sensor nti loj yuav tsum yog me dua lossis sib npaug ntawm lub lens loj, thiab C lossis CS mount yuav tsum phim.
2.LwmcOnserations raucHooSing lubrxav taucneeg tuaglua kom siab
①C-Mount lossis CS-Mount
Lub interface nrug deb ntawm C-Mount yog 17.5mm, thiab kev sib cuam tshuam nrug ntawm CS-Mount yog 12.5mm. Koj tsuas yog ua kom pom tseeb thaum koj xaiv qhov tseeb interface.
Qhov sib txawv ntawm cov sib txawv
②Qhov loj me ntawm cov khoom siv kws ntaus ntawv
Rau 2/3-nti photosensitive chip, koj yuav tsum xaiv ibMuaj cov koob yees duab lensuas sib haum rau cov duab ntsuas. Yog tias koj xaiv 1/3 lossis 1/2 nti, ib lub ces kaum dub loj yuav tshwm sim.
③Xaiv Focal ntev
Ntawd yog, xaiv lub lens muaj nrog ib daim teb ntawm saib me ntsis loj dua qhov kev soj ntsuam ntau.
④Qhov tob ntawm daim teb thiab teeb pom kev zoo ib puag ncig yuav tsum sib phim
Nyob rau hauv cov chaw nrog txaus lub teeb lossis lub teeb ci siab, koj tuaj yeem xaiv aperture me me kom nce qhov tob ntawm daim teb thiab yog li txhim kho kev tua scarity; Hauv cov chaw uas tsis txaus lub teeb, koj tuaj yeem xaiv qhov me ntsis me ntsis aperture, lossis xaiv cov photititive nti nrog siab rhiab.
Ib qho ntxiv, txhawm rau xaiv cov kev lag luam zoo lub ntsej muag lub ntsej muag, koj kuj yuav tsum tau them sai sai rau qee qhov chaw nrov. Piv txwv, cov duab sensors tau ua rau muaj kev nce qib zoo nyob rau xyoo tas los no, nrog txoj kev txuas mus ntxiv thiab ntau dua pixels txhawm rau txhim kho kev daws teeb meem ntawmMuaj Cov Ntsej Muag Lub Koob Yees Duab, nrog rau kev rhiab siab dua (backlit duab sensors). Tsis tas li ntawd, CCD thev naus laus zis tau dhau los ua kom muaj txiaj ntsig ntau dua thiab tam sim no qhia ntau thiab ntau dua nrog CMOS thev naus laus zis thev naus laus zis ntau ntxiv
Lus Kawg:
Chuangan tau nqa tawm cov qauv ua ntej thiab kev tsim cov khoom siv lub koob nrib lub koob nrib, uas tau siv hauv txhua qhov ntawm kev lag luam cov ntawv thov. Yog tias koj txaus siab rau lossis muaj kev xav tau rau cov cuab yeej siv lub koob yees duab, thov hu rau peb sai li sai tau.
Lub Sijhawm Post: Nov-19-2024
