Ua ib feem tseem ceeb ntawm lub tshuab pom kev, cov koob yees duab kev lag luam feem ntau raug teeb tsa rau ntawm kab sib dhos tshuab los hloov lub qhov muag tib neeg rau kev ntsuas thiab kev txiav txim siab. Yog li ntawd, kev xaiv lub koob yees duab lens tsim nyog kuj yog ib feem tseem ceeb ntawm kev tsim lub tshuab pom kev.
Yog li ntawd, peb yuav tsum xaiv ib lub tuam txhab zoo li caslub koob yees duab kev lag luamThaum xaiv lub koob yees duab lag luam, yuav tsum xav txog cov teeb meem twg? Cia peb saib ua ke.
1.Cov ntsiab lus tseem ceeb rau kev xaiv cov lens koob yees duab kev lag luam
①Xaiv lub koob yees duab CCD lossis CMOS raws li cov ntawv thov sib txawv
Cov iav tsom iav CCD rau kev lag luam feem ntau yog siv rau kev rho tawm cov duab ntawm cov khoom txav mus los. Tau kawg, nrog rau kev txhim kho ntawm CMOS thev naus laus zis, CMOS cov koob yees duab kev lag luam kuj tseem siv rau hauv ntau lub tshuab tso chip. CCD cov koob yees duab kev lag luam tau siv dav hauv kev tshuaj xyuas pom tsis siv neeg. CMOS cov koob yees duab kev lag luam tau siv dav vim lawv tus nqi qis thiab kev siv hluav taws xob tsawg.
Cov koob yees duab kev lag luam siv rau hauv cov kab ntau lawm
②Kev daws teeb meem ntawm cov iav tsom iav hauv kev lag luam
Ua ntej, qhov kev daws teeb meem raug xaiv los ntawm kev xav txog qhov tseeb ntawm cov khoom uas raug soj ntsuam lossis ntsuas. Yog tias qhov tseeb ntawm lub koob yees duab pixel = qhov loj ntawm qhov pom ib qho / qhov kev daws teeb meem ntawm lub koob yees duab ib qho, ces qhov kev daws teeb meem ntawm lub koob yees duab ib qho = qhov loj ntawm qhov pom ib qho / qhov tseeb theoretical.
Yog tias qhov pom ib zaug yog 5 hli thiab qhov tseeb theoretical yog 0.02 hli, qhov kev daws teeb meem ib zaug yog 5/0.02 = 250. Txawm li cas los xij, txhawm rau kom ua kom lub kaw lus ruaj khov dua, nws tsis tuaj yeem sib haum rau qhov ntsuas / kev soj ntsuam qhov tseeb nrog tsuas yog ib chav pixel. Feem ntau, ntau dua 4 tuaj yeem xaiv, yog li lub koob yees duab xav tau qhov kev daws teeb meem ib zaug ntawm 1000 thiab 1.3 lab pixels.
Qhov thib ob, xav txog qhov tso zis ntawm cov koob yees duab kev lag luam, qhov kev daws teeb meem siab yog qhov pab tau rau kev soj ntsuam kev sawv cev lossis kev tshuaj xyuas thiab kev lees paub cov software tshuab. Yog tias nws yog VGA lossis USB tso zis, nws yuav tsum tau saib ntawm lub monitor, yog li qhov kev daws teeb meem ntawm lub monitor kuj yuav tsum tau xav txog. Txawm hais tias qhov kev daws teeb meem ntawm kev siv tshuab pom kev lag luam siab npaum li cas los xij.cov koob yees duab kev lag luam, nws yuav tsis muaj txiaj ntsig ntau yog tias qhov kev daws teeb meem ntawm lub monitor tsis txaus. Qhov kev daws teeb meem siab ntawm cov koob yees duab kev lag luam kuj pab tau yog tias siv cov ntawv cim xeeb lossis thaij duab.
③Lub thav duabtus nqintawm lub koob yees duab kev lag luam lens
Thaum lub khoom uas ntsuas tau txav mus los, yuav tsum xaiv lub koob yees duab lag luam uas muaj tus nqi thav duab siab dua. Tab sis feem ntau, qhov kev daws teeb meem siab dua, tus nqi thav duab qis dua.
④Kev sib phim ntawm cov iav tsom iav hauv kev lag luam
Qhov loj ntawm lub sensor chip yuav tsum me dua lossis sib npaug rau qhov loj ntawm lub lens, thiab C lossis CS mount kuj yuav tsum sib xws.
2.Lwm yamckev xav rauckev pabcuamrlub teebcameralens
①C-mount los yog CS-mount
Qhov nrug ntawm C-mount yog 17.5 hli, thiab qhov nrug ntawm CS-mount yog 12.5 hli. Koj tsuas tuaj yeem tsom mus rau qhov ntawd thaum koj xaiv qhov interface kom raug.
Qhov sib txawv ntawm cov interfaces sib txawv
②Qhov loj ntawm cov khoom siv photosensitive
Rau lub chip photosensitive 2/3-nti, koj yuav tsum xaiv ib qholub koob yees duab kev lag luamuas sib xws rau lub kauj duab. Yog tias koj xaiv 1/3 lossis 1/2 nti, ces kaum tsaus loj dua yuav tshwm sim.
③Xaiv qhov ntev ntawm qhov muag
Ntawd yog, xaiv lub lens lag luam nrog lub zeem muag loj dua li qhov ntau thiab tsawg ntawm kev soj ntsuam.
④Qhov tob ntawm daim teb thiab qhov chaw teeb pom kev zoo yuav tsum sib phim
Hauv cov chaw uas muaj lub teeb txaus lossis lub teeb ci ntau, koj tuaj yeem xaiv lub qhov me me kom ua rau qhov tob ntawm daim teb thiab yog li txhim kho qhov tseeb ntawm kev tua; hauv cov chaw uas muaj lub teeb tsis txaus, koj tuaj yeem xaiv lub qhov loj dua me ntsis, lossis xaiv lub chip photosensitive nrog lub zog siab.
Tsis tas li ntawd xwb, txhawm rau xaiv lub koob yees duab kev lag luam zoo, koj kuj yuav tsum tau them sai sai rau qee qhov kev hloov pauv nrov. Piv txwv li, cov duab sensors tau ua tiav zoo heev hauv xyoo tas los no, nrog rau qhov sib txawv ntawm ntau thiab ntau pixels los txhim kho qhov kev daws teeb meem ntawmcov koob yees duab kev lag luam, nrog rau qhov rhiab heev dua (backlit image sensors). Ntxiv mus, CCD thev naus laus zis tau ua haujlwm zoo dua thiab tam sim no sib koom ntau dua thiab ntau dua cov haujlwm nrog CMOS thev naus laus zis sensors.
Cov Lus Xaus:
ChuangAn tau ua tiav kev tsim qauv thiab tsim cov iav tsom iav rau kev lag luam, uas siv rau txhua yam ntawm kev siv hauv kev lag luam. Yog tias koj xav tau lossis xav tau cov iav tsom iav rau kev lag luam, thov hu rau peb sai li sai tau.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-19-2024
