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Proceedings Paper

Interdigited dual-cell position-sensitive device
Author(s): Jin-Shown Shie
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Paper 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.

Paper Details

Date Published: 26 October 1992
PDF: 4 pages
Proc. SPIE 1814, Optical Sensors, (26 October 1992); doi: 10.1117/12.131270
Show Author Affiliations
Jin-Shown Shie, National Chiao Tung Univ. (Taiwan)

Published in SPIE Proceedings Vol. 1814:
Optical Sensors
Chih-Hong Chen; Tieh-Chu Wang, Editor(s)

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