Ruwan tabarau na daukar hotoAna amfani da su sosai a fannin AOI, duba bugu, duba yadi mara saƙa, duba fata, duba layin dogo, tantancewa da rarrabe launi da sauran masana'antu. Wannan labarin ya kawo gabatarwa ga ruwan tabarau na duba layi.

Gabatarwa ga Lens ɗin Duba Layi

1) Ra'ayin gilashin duba layi:

Gilashin CCD mai layi shine ruwan tabarau mai ƙarfi na FA don kyamarorin jerin firikwensin layi waɗanda suka dace da girman hoto, girman pixel, kuma ana iya amfani da su don dubawa masu inganci daban-daban.

2) Siffofin ruwan tabarau na duba layi:

1. An tsara shi musamman don aikace-aikacen duba hotuna masu ƙuduri mai girma, har zuwa 12K;

2. Matsakaicin saman da aka yi amfani da shi wajen ɗaukar hoto shine 90mm, ta amfani da kyamarar daukar hoto mai tsayi;

3. Babban ƙuduri, mafi girman pixel har zuwa 5um;

4. Ƙarancin saurin karkacewa;

5. Girman girma 0.2x-2.0x.

Abubuwan da za a yi la'akari da su don zaɓar ruwan tabarau na duba layi

Me ya sa ya kamata mu yi la'akari da zaɓin ruwan tabarau yayin zabar kyamara? Kyamarorin daukar hoto na layi na yau da kullun a halin yanzu suna da ƙuduri na 1K, 2K, 4K, 6K, 7K, 8K, da 12K, da girman pixel na 5um, 7um, 10um, da 14um, don haka girman guntu ya bambanta daga 10.240mm (1Kx10um) zuwa 86.016mm (12Kx7um).

Babu shakka, hanyar haɗin C ba ta cika buƙatun ba, domin hanyar haɗin C za ta iya haɗa guntu ne kawai da girman 22mm, wato inci 1.3. Haɗin kyamarori da yawa shine F, M42X1, M72X0.75, da sauransu. Hanyoyin haɗin ruwan tabarau daban-daban suna dacewa da mayar da hankali daban-daban na baya (nisan Flange), wanda ke ƙayyade nisan aiki na ruwan tabarau.

1) Ƙara girman gani (β, Ƙara girma)

Da zarar an tantance ƙudurin kyamara da girman pixel, za a iya ƙididdige girman firikwensin; girman firikwensin da aka raba ta hanyar filin kallo (FOV) daidai yake da girman gani. β=CCD/FOV

2) Haɗin kai (Dutse)

Akwai galibin C, M42x1, F, T2, Leica, M72x0.75, da sauransu. Bayan tabbatarwa, za ku iya sanin tsawon hanyar haɗin da ta dace.

3) Nisa ta Flange

Mayar da hankali kan baya yana nufin nisan da ke tsakanin kyamarar da ke haɗa na'urar zuwa guntu. Yana da matukar muhimmanci kuma masana'antar kyamara ce ke ƙayyade shi bisa ga tsarin hanyar gani. Kyamarori daga masana'antun daban-daban, koda kuwa suna da irin wannan ma'amala, na iya samun ma'anar mayar da hankali kan baya daban-daban.

4) MTF

Tare da girman gani, hanyar sadarwa, da kuma mayar da hankali a baya, ana iya ƙididdige nisan aiki da tsawon zoben haɗin gwiwa. Bayan zaɓar waɗannan, akwai wata muhimmiyar hanyar haɗi, wacce ita ce a ga ko ƙimar MTF ta isa? Yawancin injiniyoyin gani ba su fahimci MTF ba, amma ga ruwan tabarau masu ƙarfi, dole ne a yi amfani da MTF don auna ingancin gani.

MTF ya ƙunshi bayanai da yawa kamar bambanci, ƙuduri, mitar sarari, rashin daidaituwar chromatic, da sauransu, kuma yana nuna ingancin gani na tsakiya da gefen ruwan tabarau dalla-dalla. Ba wai kawai nisan aiki da filin gani sun cika buƙatun ba, amma bambancin gefuna bai isa ba, har ma ya kamata a sake duba ko za a zaɓi ruwan tabarau mai ƙuduri mafi girma.