I-angle ye-lens chief ray yi-engeli ephakathi kwe-optical axis kanye ne-lens chief ray. I-lens chief ray yi-ray edlula endaweni yokuma kwe-aperture yesistimu ye-optical kanye nomugqa ophakathi kwesikhungo somfundi wokungena kanye nephuzu lento. Isizathu sokuba khona kwe-CRA ku-Image Sensor ukuthi kukhona i-FOV (Insimu yokubuka) ku-Mirco Lens ebusweni be-Image Sensor, futhi inani le-CRA lincike enanini lephutha elivundlile phakathi kwe-Micro Lens ye-Image Sensor kanye nendawo ye-silicon photodiode. Inhloso iwukufanisa kangcono ilensi.
I-angle yemisebe eyinhloko yelensi
Ukukhetha i-CRA ehambisanayo ye-Lens&Image Sensor kungaqinisekisa ukuthi ama-photon athathwe ngendlela enembile kakhulu kuma-photodiode e-silicon, ngaleyo ndlela kuncishiswe ukuxoxa okubonakalayo.
Kuma-sensor ezithombe anama-pixel amancane, i-engeli eyinhloko yemisebe isibe yipharamitha ebalulekile. Lokhu kungenxa yokuthi ukukhanya kufanele kudlule ekujuleni kwe-pixel ukuze kufinyelelwe ku-silicon photodiode phansi kwe-pixel, okusiza ukwandisa inani lokukhanya eliya ngqo ku-photodiode futhi kunciphise inani lokukhanya eliya ku-silicon photodiode ye-pixel eseduze (Ukudala i-crosstalk ye-optical).
Ngakho-ke, lapho inzwa yesithombe ikhetha ilensi, ingacela umenzi we-Image Sensor kanye nomenzi welensi ukuthi athole ijika le-CRA ukuze lifane; ngokuvamile kunconywa ukuthi umehluko we-engeli ye-CRA phakathi kwe-Image Sensor kanye nelensi ulawulwe ngaphakathi kwama-+/-3 degrees, vele, uma i-Pixel incane, isidingo siba sikhulu.
Imiphumela yokungafani kwe-lens CRA kanye ne-sensor CRA:
Ukungafani kuholela ekukhulumeni okuphambene okuholela ekungalinganini kombala esithombeni sonke, okuholela ekunciphiseni isilinganiso sesiginali kuya komsindo (SNR); njengoba i-CCM idinga ukwanda kwenzuzo yedijithali ukuze ibuyisele ukulahleka kwesiginali ku-photodiode.
Imiphumela yokungafani kwelensi ye-CRA kanye ne-sensor CRA
Uma i-CRA ingahambisani, izobangela izinkinga ezifana nezithombe ezifiphele, inkungu, ukugqama okuphansi, imibala efiphele, kanye nokuncipha kokujula kwensimu.
Ilensi i-CRA incane kune-Image Sensor CRA ezokhiqiza umbala ofiphazayo.
Uma i-Image Sensor incane kune-lens CRA, kuzovela ukufiphaza kwelensi.
Ngakho-ke kumele siqale siqinisekise ukuthi ukufiphaza kombala akuveli, ngoba ukufiphaza kwelensi kulula ukukuxazulula ngokulungisa amaphutha kunokufiphaza kombala.
Inzwa Yesithombe kanye nelensi ye-CRA
Kungabonakala esithombeni esingenhla ukuthi i-TTL yelensi nayo iyisihluthulelo sokunquma i-engeli ye-CRA. Uma i-TTL iphansi, i-engeli ye-CRA inkulu. Ngakho-ke, inzwa yesithombe enamaphikseli amancane nayo ibaluleke kakhulu ekufanisweni kwelensi ye-CRA lapho kuklanywa uhlelo lwekhamera.
Ngokuvamile, i-lens CRA ayifani ncamashi ne-Image sensor CRA ngezizathu ezahlukahlukene. Kuye kwabonwa ngokuhlola ukuthi ama-lens CRA curves ane-flat top (i-flip encane) abekezelela kakhulu ukuhlukahluka kokuhlanganiswa kwe-camera module kune-curved CRAs.
Ilensi ye-CRA ayifani ncamashi ne-Image sensor CRA ngezizathu ezahlukahlukene.
Izithombe ezingezansi zibonisa izibonelo zama-flat top nama-CRA agobile.
Izibonelo zama-CRA ayisicaba kanye nama-CRA agobile
Uma i-CRA yelensi ihluke kakhulu ku-CRA yenzwa yesithombe, umbala uzovela njengoba kuboniswe esithombeni esingezansi.
Kuvela umbala
Isikhathi sokuthunyelwe: Jan-05-2023
