Xalka madaxa leysku waa xagal u dhexeeya xididdada indhaha iyo madaxa muraayadaha indhaha. Isugeynta muraayadaha indhaha ayaa ah raajada ka gudbaya istaagga deperture ee nidaamka indhaha iyo khadka u dhexeeya xarunta ardayda laga soo galo iyo barta. Sababta jiritaanka CRA ee dareenka muuqaalka ayaa ah in ay jirto Fov (aragti aragti ah) muraayadda xijaabka, iyo qiimaha CRA waxay kuxirantahay qiimaha khaladaadka safka ah ee u dhexeeya lenska ee dareenka sawirka iyo booska photodiode-ka Silicon. Ujeedada ayaa ah in si fiican loo isbarbar dhigo lens.
Xeerarka madaxa leysku
Xulashada isku habboonaanta 'CRA' ee Lens & Securing Securing waxay xaqiijin kartaa qabashada saxanka oo sax ah
Dareemada sawirka ee leh pixels yar yar, xagal raajada ayaa noqday halbeeg muhiim ah. Tani waa sababta oo ah nalka ayaa ah inuu galo qoto-dheer ee Pixel si uu u gaaro silicon-ka si uu u dhexeeyo silikodiodiode-ka hoose ee pixel, kaas oo ka caawiya xaddiga iftiinka ee saxda ah ee ku dhex jira patodiode wuxuuna yareeyaa xaddiga iftiinka ee gala Photodiode of pixel ku xigta (abuurista crosstalk).
Sidaa darteed, marka matoor dareeme uu xulato muraayad, waxay weydiin kartaa soosaaraha sawirka sawirka & soo-saaraha lens ee qalooca CRA ee u dhigma. Waxaa guud ahaan lagu talinayaa in farqiga xaqa CRA ee u dhexeeya dareeraha sawirka oo muraayadaha lagu xakameeyo gudaha +/- 3 digrii, dabcan, pixel-ka yar, ayaa sareysa.
Saamaynta lenska CRA iyo dareenka dareeraha
Natiijooyinka isku-darka ah ee ka jira Crosstalk ayaa dhalisay isku dheelitir la'aanta midabka ee muuqaalka kore, taasoo dhalisay yareynta saamiga muuqaalka-dhawaaqa (SNR); Maaddaama CCM ay u baahan tahay in la kordhiyo faa'iidada dijitaalka ah ee dhijitaalka ah si loo magdhabo luminta luminta ee patodiode.
Saamaynta lenska CRA iyo dareenka dareeraha
Haddii CRA aysan u dhigmin, waxay u horseedi doontaa dhibaatooyin sida sawirrada indhaha, ceeryaamo, isbarbardhiga hooseeya, midabada xumaaday, iyo qoto dheer oo hoos loo dhigay.
Lens CRA-ka ayaa ka yar kan dareeraha dareenka ee CRA soo saari doono midab midab leh.
Haddii dareeraha sawirka uu ka yar yahay lenska CRA, muraayadaha indhaha ayaa dhici doona.
Marka waa inaan marka hore hubinaa in xijaabka midabku uusan muuqan, sababtoo ah muraayadda muraayadaha indhaha ayaa ka sahlan in la xalliyo iyada oo loo marayo goynta midabbada.
Dareenka sawirka iyo lenska cra
Waxaa lagu arki karaa shaxanka kor ku xusan in TTL ee lenska ay sidoo kale fure u tahay go'aaminta xagal CRA. Hoose ee TTL, xagal weyn ee CRA. Sidaa darteed, dareenka muuqaalka sawirka yar yar ayaa sidoo kale muhiim u ah lenska CRA ee isbarbar dhigaya marka la qaabeeyo nidaamka kaameeraha.
Badanaa, lenska CRA si sax ah uma eka muuqaalka dareenka muuqaalka sababaha kala duwan awgood. Waxaa loo arkay tijaabooyin ay lens CRA oo ku taal dabaq dusha sare (Flip) oo ugu yar) ayaa ah kuwa ugu dulqaadashada kaladuwanaanshaha isuduwaha shirkada kaameeradda ah ee ka badan ee loo yaqaan 'cras'.
Lens CRA si sax ah uma eka muuqaalka dareenka samafalka sababo kala duwan awgood
Sawirada hoosta ku yaal waxay muujinayaan tusaalooyinka dusha sare iyo gogosha qalooca.
Tusaalooyinka dusha sare ee dabacsan oo qaloocsan
Haddii CRA ee lens ay aad uga duwan tahay CRA dareeraha sawirka, kabka midabka ayaa u muuqan doona sida ku cad sawirka hoose.
Midabka midabku wuu muuqdaa
Waqtiga Post: Jan-05-2023
