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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 11 — May. 30, 2005
  • pp: 4230–4236

Design of two-dimensional zero reference codes by means of a global optimization method

José Saez-Landete, José Alonso, and Eusebio Bernabeu  »View Author Affiliations

Optics Express, Vol. 13, Issue 11, pp. 4230-4236 (2005)

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A method to obtain the absolute measure of the position is by means of the autocorrelation of two zero reference marks. In one-axis measurement systems one dimensional mark are used and the design of these marks is relatively complex. When the movement is in two-axes, two dimensional reference marks are required and they are even harder to design. We report a method of global optimization to calculate the optimal two dimensional zero reference marks which generate the reference signal with the highest central peak. This method proves to be a powerful tool for solving this problem.

© 2005 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3940) Instrumentation, measurement, and metrology : Metrology
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.0230) Optical devices : Optical devices

ToC Category:
Research Papers

Original Manuscript: April 26, 2005
Revised Manuscript: May 19, 2005
Published: May 30, 2005

José Sáez-Landete, José Alonso, and Eusebio Bernabeu, "Design of two-dimensional zero reference codes by means of a global optimization method," Opt. Express 13, 4230-4236 (2005)

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