Theory and applications of a surface inspection technique using double-pass retroreflection

Autor: Donald A Clarke, Omer L. Hageniers, Frank Karpala, Rodger L. Reynolds
Rok vydání: 1993
Předmět:
Zdroj: Optical Engineering. 32:2122
ISSN: 0091-3286
DOI: 10.1117/12.143938
Popis: A historic perspective to the development of the D SIGHT[trademark] surface inspection technique from a laboratory curiosity to a mature technology is presented. A brief description of the experimental process that led to the discovery of the phenomenon is followed by a discussion of how the optical process functions and how varying the hardware configuration affects the system output. Illustrations of a wide variety of surfaces, imaged using double-pass retroreflection, are used to show its evolution from a purely optical, visual enhancement technique to a computer-based, image acquisition system, which, through digital image processing, enables a user to quantify, annotate, and record the quality of a given surface. Possible directions for future development are discussed briefly.
Databáze: OpenAIRE