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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 1 — Jan. 10, 2005
  • pp: 136–141

Bifocal optical system for distant object tracking

Xinping Liu, Xianyang Cai, Shoude Chang, and Chander P. Grover  »View Author Affiliations

Optics Express, Vol. 13, Issue 1, pp. 136-141 (2005)

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A new bifocal optical system used for distant object tracking is proposed. This system combines a birefringent element with a conventional glass lens so that the spot image size and its variation with the axial distance can be controlled according to the requirement of a distant object tracker. The lens design for the tracking application is discussed and an example is given. The new lens system provides a more uniform spot image size and an extended focal depth compared to a conventional lens with one focus.

© 2005 Optical Society of America

OCIS Codes
(080.3620) Geometric optics : Lens system design
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(260.1440) Physical optics : Birefringence

ToC Category:
Research Papers

Original Manuscript: December 1, 2004
Revised Manuscript: December 22, 2004
Manuscript Accepted: December 22, 2004
Published: January 10, 2005

Xinping Liu, Xianyang Cai, Shoude Chang, and Chander P. Grover, "Bifocal optical system for distant object tracking," Opt. Express 13, 136-141 (2005)

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