Interdigited dual-cell position-sensitive device

Jin-Shown Shie

doi:10.1117/12.131270

26 October 1992 Interdigited dual-cell position-sensitive device

Jin-Shown Shie

Proceedings Volume 1814, Optical Sensors; (1992) https://doi.org/10.1117/12.131270
Event: International Symposium on Optoelectronics in Computers, Communications, and Control, 1992, Hsinchu, Taiwan

Abstract

A special one-dimensional position-sensitive device for detection of a light-spot location is designed and fabricated. The device is composed of a pair of photodiodes with complementarily interdigited comb configuration. The width of comb teeth is characterized by a designated distributive function, hence, the coordination information of a light spot falling upon the device can be determined by photo-induced currents of the two diodes. This device is useful as the position sensing element in camera-autofocus application.

Citation Download Citation

Jin-Shown Shie "Interdigited dual-cell position-sensitive device", Proc. SPIE 1814, Optical Sensors, (26 October 1992); https://doi.org/10.1117/12.131270

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