Lub kaum sab xis ntawm lub lens yog lub kaum sab xis ntawm lub qhov muag axis thiab lub lens thawj kab hluav taws xob. Lub lens thawj kab hluav taws xob yog cov kab hluav taws xob uas dhau los ntawm qhov aperture nres ntawm qhov kho qhov muag thiab kab nruab nrab ntawm cov tub ntxhais kawm nkag qhov chaw thiab qhov khoom taw tes. Yog vim li cas rau qhov muaj nyob ntawm CRA hauv Image Sensor yog tias muaj FOV (Field of view) ntawm Mirco Lens ntawm qhov chaw ntawm Duab Sensor, thiab tus nqi ntawm CRA nyob ntawm qhov kev ua yuam kev kab rov tav ntawm Micro Lens. ntawm cov duab Sensor thiab txoj hauj lwm ntawm silicon photodiode. Lub hom phiaj yog kom phim lub lens zoo dua.
Lub kaum sab xis ntawm lub lens
Xaiv qhov sib txuam CRA ntawm Lens & Duab Sensor tuaj yeem ua kom ntseeg tau ntau qhov kev ntes ntawm photons rau hauv silicon photodiodes, yog li txo qhov kev sib tham ntawm optical.
Rau cov duab sensors nrog me me pixels, lub kaum sab xis ntawm lub kaum sab xis tau dhau los ua qhov tseem ceeb. Qhov no yog vim hais tias lub teeb yuav tsum tau mus txog qhov tob ntawm pixel kom ncav cuag silicon photodiode nyob rau hauv qab ntawm pixels, uas yuav pab kom lub teeb pom kev zoo mus rau hauv lub photodiode thiab txo cov nqi ntawm lub teeb mus rau hauv silicon. photodiode ntawm ib qho pixel uas nyob ib sab (Tsim optical crosstalk).
Yog li ntawd, thaum tus duab sensor xaiv lub lens, nws tuaj yeem nug cov chaw tsim khoom duab Sensor & lens chaw tsim khoom rau CRA nkhaus rau kev sib piv; Nws feem ntau pom zoo tias CRA lub kaum sab nraud qhov sib txawv ntawm Cov Duab Sensor thiab lub lens raug tswj tsis pub dhau +/- 3 degrees, tau kawg, qhov me dua Pixel, qhov xav tau ntau dua.
Cov teebmeem ntawm lub lens CRA thiab sensor CRA mismatch:
Kev tsis sib haum xeeb tshwm sim hauv crosstalk uas ua rau muaj xim tsis sib xws thoob plaws hauv daim duab, uas ua rau txo qis ntawm cov teeb liab-rau- suab nrov piv (SNR); raws li CCM yuav tsum tau nce digital nce los them rau cov teeb liab poob hauv photodiode.
Cov teebmeem ntawm lub lens CRA thiab sensor CRA mismatch
Yog tias CRA tsis sib haum, nws yuav ua rau muaj teeb meem xws li cov duab tsis pom tseeb, pos huab, tsis sib xws, xim faded, thiab txo qhov tob ntawm qhov chaw.
Lub lens CRA yog me dua cov duab Sensor CRA yuav tsim xim shading.
Yog tias cov duab Sensor me dua lub lens CRA, Lens shading yuav tshwm sim.
Yog li peb yuav tsum ua ntej kom ntseeg tau tias Xim shading tsis tshwm sim, vim Lens shading yog yooj yim los daws los ntawm kev debugging dua Xim shading.
Duab Sensor thiab Lens CRA
Nws tuaj yeem pom los ntawm daim duab saum toj no tias TTL ntawm lub lens kuj yog tus yuam sij rau kev txiav txim siab CRA lub kaum sab xis. Qhov qis dua TTL, qhov loj ntawm CRA lub kaum sab xis. Yog li ntawd, cov duab sensor nrog me me pixels kuj tseem ceeb heev rau lub lens CRA txuam thaum tsim lub koob yees duab system.
Feem ntau, lub lens CRA tsis haum raws li cov duab sensor CRA rau ntau yam laj thawj. Nws tau raug soj ntsuam sim tias lub lens CRA nkhaus nrog lub tiaj tiaj (tsawg kawg flip) yog qhov ua siab ntev ntawm lub koob yees duab module sib dhos ntau dua li nkhaus CRAs.
Lub lens CRA tsis haum raws li cov duab sensor CRA rau ntau yam
Cov duab hauv qab no qhia cov piv txwv ntawm tiaj tus sab saum toj thiab nkhaus CRAs.
Piv txwv ntawm tiaj tus sab saum toj thiab nkhaus CRAs
Yog tias CRA ntawm lub lens txawv dhau ntawm CRA ntawm cov duab sensor, cov xim cam yuav tshwm sim raws li pom hauv daim duab hauv qab no.
Cov xim pov tseg tshwm
Post lub sij hawm: Jan-05-2023
