Rigorous optical theory of the D Sight phenomenon

Rodger L. Reynolds; Omer L. Hageniers

doi:10.1117/12.51103

1 January 1991 Rigorous optical theory of the D Sight phenomenon

Rodger L. Reynolds, Omer L. Hageniers

Proceedings Volume 1332, Optical Testing and Metrology III: Recent Advances in Industrial Optical Inspection; (1991) https://doi.org/10.1117/12.51103
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

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.

Citation Download Citation

Rodger L. Reynolds and Omer L. Hageniers "Rigorous optical theory of the D Sight phenomenon", Proc. SPIE 1332, Optical Testing and Metrology III: Recent Advances in Industrial Optical Inspection, (1 January 1991); https://doi.org/10.1117/12.51103

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