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Applied Optics

Applied Optics


  • Vol. 37, Iss. 13 — May. 1, 1998
  • pp: 2624–2627

Retroreflective grating generation and analysis for surface measurement

Xianzhu Zhang and Walter North  »View Author Affiliations

Applied Optics, Vol. 37, Issue 13, pp. 2624-2627 (1998)

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An efficient system for retroreflective grating generation and analysis has been constructed to measure the derivative and the contour of specular surfaces. In this system, a new optical configuration has been provided to generate and capture a grating image with a retroreflective screen. Tests show that the system can detect indents and outdents with a maximum depth of less than 10 μm. The method can be developed for automated industrial inspection and machine vision.

© 1998 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(070.2590) Fourier optics and signal processing : ABCD transforms
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure

Original Manuscript: October 9, 1997
Revised Manuscript: December 18, 1997
Published: May 1, 1998

Xianzhu Zhang and Walter North, "Retroreflective grating generation and analysis for surface measurement," Appl. Opt. 37, 2624-2627 (1998)

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