Xagalka ugu weyn ee lensku waa xagasha u dhaxaysa dhidibka indhaha iyo rayga madaxa lens-ka.Raajo madaxa lensku waa fallaadhaha ka gudba joogsiga daloolka ee habka indhaha iyo xariiqda u dhaxaysa xarunta ardayga laga soo galo iyo barta shayga.Sababta jiritaanka CRA ee Dareemka Sawirka waa in uu jiro FOV (Field of view) ee muraayadda Mirco ee dusha sare ee Sawirka Sawirka, qiimaha CRA-dana waxay ku xiran tahay qiimaha qaladka tooska ah ee u dhexeeya Micro Lens ee Dareemka Sawirka iyo booska Silikoon photodiode.Ujeeddadu waa in si fiican loo waafajiyo muraayadda.
Xagasha rayiga ee madaxa muraayada
Doorashada CRA ee Lens-ka iyo Dareemaha Sawirka ee u dhigma waxay xaqiijin kartaa qabsashada saxda ah ee sawir-qaadista ee silikoon photodiodes, taas oo hoos u dhigaysa is-dhaafsiga indhaha.
Dareemayaasha sawirka leh pixels yaryar, xagasha shucaaca ugu weyn waxay noqotay halbeeg muhiim ah.Tani waa sababta oo ah iftiinku waa inuu dhex maraa qoto dheer ee pixel si uu u gaaro photodiode silicon ee hoose ee pixel, kaas oo gacan ka geysanaya kor u qaadida qadarka iftiinka ee si sax ah u gala photodiode wuxuuna yareeyaa qadarka iftiinka gala silikon. photodiode ee pixel ku xiga (Abuuritaanka iskutallaabta indhaha).
Sidaa darteed, marka dareemaha Sawirku doorto muraayadda, waxay waydiisan kartaa soo saaraha Sawirka Sensor-ka & soo saaraha muraayadaha muraayadda CRA-da si ay isugu dhigmaan;waxaa guud ahaan lagu talinayaa in farqiga xagasha CRA ee u dhexeeya Dareemaha Sawirka iyo muraayada lagu xakameeyo gudaha +/-3 digrii, dabcan, Pixel ka yar, ayaa ka sarreeya shuruudaha.
Saamaynta lens-ka CRA iyo dareemaha CRA oo is-waafaqayn:
Natiijooyinka is-maandhaafka ah ee hadalka isdhaafka ah ee keenaya dheelitir la'aanta midabka sawirka oo dhan, taasoo keentay hoos u dhaca saamiga signal-ilaa-sanqa (SNR);maadaama CCM uu u baahan yahay korodhka faa'iidada dhijitaalka ah si loo magdhabo luminta signalka ee photodiode.
Saamaynta lens-ka CRA iyo dareemaha CRA oo is-daba-marin
Haddii CRA-da aysan u dhigmin, waxay keeni doontaa dhibaatooyin ay ka mid yihiin muuqaalada mugdiga ah, ceeryaamo, kala duwanaansho hoose, midabyo libdhay, iyo hoos u dhaca qoto dheer ee goobta.
Lens-ka CRA wuu ka yar yahay Sawirka Dareemaha CRA wuxuu soo saari doonaa hadh midab leh.
Haddii dareemaha sawirku ka yar yahay muraayada CRA, hadhka muraayada ayaa dhacaya.
Markaa waa in aan marka hore hubino in hadhaynta Midabka aanu soo bixin, sababtoo ah hadhaynta lens-ku way fududahay in lagu xalliyo khaladaadka marka loo eego midabka midabka.
Dareemka sawirka iyo muraayadda CRA
Waxaa laga arki karaa shaxanka kore in TTL ee lensku uu sidoo kale yahay furaha go'aaminta xagasha CRA.Hoos udhaca TTL, waa weyn yahay xagasha CRA.Sidaa darteed, dareemaha sawirka leh pixels yar ayaa sidoo kale aad muhiim ugu ah lens-ka CRA marka la naqshadeynayo nidaamka kamarada.
Inta badan, muraayada CRA si sax ah uma dhigna Dareemaha Sawirka CRA sababo kala duwan dartood.Waxaa si tijaabo ah loo arkay in lens-yada CRA-da ee leh kor fidsan (flip-ka ugu yar) ay aad ugu dulqaadan karaan kala duwanaanshaha moduleka kamaradaha marka loo eego CRA-yada qaloocan.
Muraayada CRA si sax ah uguma dhigna dareenka sawirka CRA sababo kala duwan dartood
Sawirrada hoose waxay muujinayaan tusaalayaal CRA-yada sare ee fidsan iyo kuwa qalloocan.
Tusaalooyinka CRA-yada sare ee fidsan
Haddii CRA-da muraayadda uu aad uga duwan yahay CRA-da dareenka sawirka, kabka midabka ayaa soo muuqan doona sida sawirka hoose ka muuqda.
Kabka midabka ayaa muuqda
Waqtiga boostada: Jan-05-2023
