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Optical Engineering

Diffractive position sensing devices using two-dimensional grating dots
Author(s): Sheng-Lih L. Yeh; Kuang Tsan Lin
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Paper Abstract

A new type of position sensing device (PSD) is proposed in this paper. The proposed PSDs are composed of two-dimensional grating dots. The grating dots of a new PSD can diffract an incident laser beam into many spots. By identifying the maximum and minimum values of the designed numbers of the diffracted spots, the one- or two-dimensional position of the center of the laser beam can be precisely determined. Because the operations are very easy and the mass-production costs are cheap for the proposed PSDs, the PSDs are useful.

Paper Details

Date Published: 1 November 2007
PDF: 5 pages
Opt. Eng. 46(11) 113602 doi: 10.1117/1.2802079
Published in: Optical Engineering Volume 46, Issue 11
Show Author Affiliations
Sheng-Lih L. Yeh, Lunghwa Univ. of Science and Technology (Taiwan)
Kuang Tsan Lin, St. John's Univ. (Taiwan)

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