Babban guntu na kyamara - firikwensin hoto na CMOS

Babban guntu na kyamara - Hoton CMOS

firikwensin

CMOS (madaidaicin karfe oxide semiconductor) na aikin firikwensin hoton yana hasashen a rabin na biyu na shekarun 1960, amma na'urar ba ta kasuwanci ba har sai fasahar microfabrication ta samo asali sosai a cikin 1990s.CCD (na'urar da aka haɗa caji) ko CMOS (madaidaicin ƙarfe oxide semiconductor) ana amfani da firikwensin hoto a kyamarori na dijital da wayoyin hannu na yau.

CCD da CMOS duka na'urorin semiconductor ne waɗanda ke aiki azaman "idanun lantarki."

Dukansu biyu suna amfani da photodiodes, amma hanyoyin samar da su da hanyoyin karanta siginar sun bambanta.Kodayake fasahar CCD ta shahara a farkon farko saboda girman hankali da ingancin hoto, na'urori masu auna firikwensin CMOS sun fara fin na'urori masu auna firikwensin CCD a girman jigilar kaya tun daga 2004.

Adadin bayanai ya fi CCD sauri.
Tsare-tsare na capacitors a cikin na'urar firikwensin hoton da aka haɗa caji (CCD) yana ɗaukar cajin lantarki gwargwadon ƙarfin haske na pixel.Kowane abin da ke cikin capacitor ana canja shi zuwa maƙwabcinsa ta hanyar da'ira mai sarrafawa, kuma capacitor na ƙarshe a cikin tsararrun yana kwashe cajin sa zuwa amplifier caji.An san na'urori masu auna firikwensin CCD don hanyar watsa bayanan guga-brigade.

Na'urar firikwensin hoto na ƙarin ƙarfe oxide semiconductor (CMOS).

a daya bangaren, ya ƙunshi photodiode da CMOS transistor canji na kowane pixel, wanda ke ba da damar ƙara siginar pixel daban.Ana iya samun isar da siginar pixel kai tsaye da jeri, da sauri fiye da firikwensin CCD, ta hanyar sarrafa matrix na masu sauyawa.Wani fa'idar samun amplifier ga kowane pixel shine yana rage hayaniyar da ke tashi yayin karanta siginar lantarki waɗanda aka canza daga hasken da aka tattara.

Na'urar firikwensin hoton CMOS ba su da tsada don ƙira fiye da na'urori masu auna hoto na CCD saboda ana iya sake amfani da na'urorin masana'anta na semiconductor don samar da su.Ba kamar na'urori masu auna firikwensin CCD ba, waɗanda ke amfani da da'irori na analog masu ƙarfi, na'urori masu auna firikwensin CMOS suna amfani da ƙaramin kewayawa na dijital wanda ke cinye ƙasa da ƙarfi kuma, a ka'idar, ba shi da shafa (fari a tsaye a cikin hoto mai haske) da fure (lalacewar hotuna kamar haka). a matsayin farin spots).Saboda ana iya shigar da tsarin dabaru akan guntu yayin aikin masana'antu, ana haɓaka firikwensin CMOS tare da da'irar sarrafa hoto akan guntu don aikace-aikace kamar tantance hoto da hangen nesa na wucin gadi, tare da wasu na'urori a halin yanzu ana amfani da su.

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