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Date: October 5, 2019

Topic:

Recall

Electron-hole pair

CCD: Charge Coupled Device

CMOS: Complimentary Metal-Oxide Semiconductor

Image Sensor

Notes

generate analog signal

each pixel read its own voltage

• each pixel is a photodiode (光电二极管), it doesn't know what color it is, just counting photons.
• on top of the photodiodes are color filters
• each location can only count one color
• it's known as color mosaic
• each location has a lenslet on it that concentrate lights to the center.

it's very thin: top to bottom only has 9.6 um

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