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Optical Engineering

Hadamard codes of m not equal to 2n in phase-code multiplexed holographic memories
Author(s): Xiangyang Yang; James Zhiqing Wen; Yu Xu; Nan Li
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Paper Abstract

Recently the authors of this paper dealt with computergenerated holograms (CGHs) for the optical inspection of the surface roughness and waviness of relatively smooth surface roughness standards.1 The idea was to exploit two separate sensors to provide information on one hand about the surface roughness by measuring the contrast parameter as defined in Ref. 1, and on the other hand to inspect the surface curvature. Later, we improved the operational function of the surface sensor.

Paper Details

Date Published: 1 December 1996
PDF: 3 pages
Opt. Eng. 35(12) doi: 10.1117/1.601118
Published in: Optical Engineering Volume 35, Issue 12
Show Author Affiliations
Xiangyang Yang, Univ. of New Orleans (United States)
James Zhiqing Wen, Univ. of New Orleans (United States)
Yu Xu, Univ. of New Orleans (United States)
Nan Li, Univ. of New Orleans (United States)

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