Yintoni i-Chief Ray Angle

I-angle ye-lens chief ray yi-engile ephakathi kwe-optical axis kunye ne-lens chief ray. I-lens chief ray yi-ray edlula kwi-aperture stop ye-optical system kunye nomgca ophakathi kweziko lomfundi wokungena kunye nendawo yento. Isizathu sokubakho kwe-CRA kwi-Image Sensor kukuba kukho i-FOV (i-Field of view) kwi-Mirco Lens kumphezulu we-Image Sensor, kwaye ixabiso le-CRA lixhomekeke kwixabiso lempazamo ethe tyaba phakathi kwe-Micro Lens ye-Image Sensor kunye nendawo ye-silicon photodiode. Injongo kukudibanisa ngcono ilensi.

I-angle yemitha ephambili yelensi

Ukukhetha i-CRA ehambelanayo yeLens&Image Sensor kunokuqinisekisa ukubanjwa kwee-photons ngokuchanekileyo kwii-photodiodes ze-silicon, ngaloo ndlela kunciphisa i-optical crosstalk.

Kwizinzwa zemifanekiso ezinee-pixels ezincinci, i-engile yemitha ephambili ibe yiparameter ebalulekileyo. Oku kungenxa yokuba ukukhanya kufuneka kudlule kubunzulu be-pixel ukuze kufikelelwe kwi-silicon photodiode ezantsi kwe-pixel, nto leyo enceda ukwandisa ubungakanani bokukhanya okungena ngqo kwi-photodiode kwaye kunciphisa ubungakanani bokukhanya okungena kwi-silicon photodiode ye-pixel ekufutshane (Ukudala i-optical crosstalk).

Ngoko ke, xa i-Image sensor ikhetha ilensi, ingacela umenzi we-Image Sensor kunye nomenzi welensi ukuba banike i-CRA curve ukuze bafanise; ngokubanzi kucetyiswa ukuba umahluko we-engile ye-CRA phakathi kwe-Image Sensor kunye nelensi ulawulwe ngaphakathi kwe-+/-3 degrees, ewe, okukhona iPixel incinci, kokukhona imfuneko iphezulu.

Iziphumo zokungalingani kwe-lens CRA kunye ne-sensor CRA:

Ukungangqinelani kuphumela ekuthetheni okuchaseneyo okubangela ukungalingani kombala kumfanekiso wonke, okubangela ukwehla komlinganiselo wesignali-kwingxolo (SNR); njengoko i-CCM ifuna ukwanda kwengeniso yedijithali ukuze ihlawulele ukulahleka kwesignali kwi-photodiode.

Iziphumo zokungalingani kwe-lens CRA kunye ne-sensor CRA

Ukuba i-CRA ayihambelani, iya kubangela iingxaki ezifana nemifanekiso engacacanga, inkungu, umahluko ophantsi, imibala efipheleyo, kunye nobunzulu obunciphileyo bentsimi.

Ilensi ye-CRA incinci kune-Image Sensor CRA eza kuvelisa umbala okhanyayo.

Ukuba i-Image Sensor incinci kune-lens CRA, kuya kubakho ukufiphalisa kwelensi.

Ngoko ke kufuneka siqale siqinisekise ukuba i-Color shading ayibonakali, kuba i-lens shading kulula ukuyisombulula ngokulungisa iimpazamo kune-Color shading.

I-CRA yeSensor yoMfanekiso kunye nelensi

Kuyabonakala kumfanekiso ongentla ukuba i-TTL yelensi ikwayindlela ebalulekileyo yokumisela i-engile ye-CRA. Okukhona i-TTL isezantsi, kokukhona i-engile ye-CRA inkulu. Ke ngoko, isenzi somfanekiso esinee-pixels ezincinci sibaluleke kakhulu ekufanisweni kwelensi ye-CRA xa kuyilwa inkqubo yekhamera.

Rhoqo, i-lens CRA ayifani ncam ne-Image sensor CRA ngezizathu ezahlukeneyo. Kuye kwabonwa ngovavanyo ukuba ii-lens CRA curves ezine-flat top (ubuncinci be-flip) zinyamezela ngakumbi utshintsho lwe-camera module assembly kunee-curved CRA.

Ilensi ye-CRA ayifani ncam ne-Image sensor CRA ngenxa yezizathu ezahlukeneyo.

Imifanekiso engasezantsi ibonisa imizekelo yee-flat top kunye nee-CRA ezigobileyo.

Imizekelo yee-CRA ezithe tyaba kunye nee-CRA ezigobileyo

Ukuba i-CRA yelensi yahlukile kakhulu kwi-CRA yesenzi somfanekiso, umbala uya kuvela njengoko kubonisiwe kumfanekiso ongezantsi.

Kuvela imibala