The fill factor of an image sensor array is the ratio of a pixel's light sensitive area to its total area. For pixels without microlenses, the fill factor is the ratio of photodiode area to total pixel area,[1] but the use of microlenses increases the effective fill factor, often to nearly 100%, by converging light from the whole pixel area into the photodiode.[2]
Another case that reduces the fill factor of an image is to add additional memory beside each pixel, so as to achieve a global shutter on CMOS sensors.[3]
References edit
- ^ Sebastiano Battiato; Arcangelo Ranieri Bruna; Giuseppe Messina; Giovanni Puglisi, eds. (2010). Image Processing for Embedded Devices: From CFA Data to Image/video Coding. Bentham Science Publishers. p. 12. ISBN 9781608051700.
- ^ Sebastiano Battiato; Arcangelo Ranieri Bruna; Giuseppe Messina; Giovanni Puglisi, eds. (2010). Image Processing for Embedded Devices: From CFA Data to Image/video Coding. Bentham Science Publishers. p. 29. ISBN 9781608051700.
- ^ a b "Sensors: Global shutter - Personal View Talks". www.personal-view.com. Retrieved 2017-07-29.
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