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Proceedings Paper

Rigorous optical theory of the D Sight phenomenon
Author(s): Rodger L. Reynolds; Omer L. Hageniers
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Paper Abstract

D SIGHTTM is an effective method for inspecting surfaces for localized shape defects. A complete theory is presented which describes how this phenomenon converts surface slope variations to grey scale information. The theory, based on graphical ray-tracing, accounts for all significant physical parameters and illustrates their interactions, as well as their effect on the resulting D SIGHT image. The theory's validity is demonstrated using a computer-based, ray-tracing simulation. Using the physical parameters as inputs, the computer model is shown to produce images which closely resemble those obtained from corresponding experimental hardware.

Paper Details

Date Published: 1 January 1991
PDF: 12 pages
Proc. SPIE 1332, Optical Testing and Metrology III: Recent Advances in Industrial Optical Inspection, (1 January 1991); doi: 10.1117/12.51103
Show Author Affiliations
Rodger L. Reynolds, Diffracto Ltd. (Canada)
Omer L. Hageniers, Diffracto Ltd. (Canada)


Published in SPIE Proceedings Vol. 1332:
Optical Testing and Metrology III: Recent Advances in Industrial Optical Inspection
Chander Prakash Grover, Editor(s)

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