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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 1 — Jan. 1, 1998
  • pp: 125–129

Three-dimensional sensing by using a lenslet, a Dammann grating, and a combination

David Mendlovic and Eran Gur  »View Author Affiliations


Applied Optics, Vol. 37, Issue 1, pp. 125-129 (1998)
http://dx.doi.org/10.1364/AO.37.000125


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Abstract

In the last two decades, three-dimensional sensors based on misfocusing have been suggested. This research addresses the question of measuring several focal depths simultaneously. Two options for generating the necessary array of spots are analyzed: the use of a lenslet array and the use of a Dammann grating. Finally, a combination of the two approaches is proposed. Such a combination enables tailoring the system performance to the exact needs of the user.

© 1998 Optical Society of America

OCIS Codes
(040.1240) Detectors : Arrays
(050.2770) Diffraction and gratings : Gratings
(150.6910) Machine vision : Three-dimensional sensing

History
Original Manuscript: July 2, 1997
Revised Manuscript: September 18, 1997
Published: January 1, 1998

Citation
David Mendlovic and Eran Gur, "Three-dimensional sensing by using a lenslet, a Dammann grating, and a combination," Appl. Opt. 37, 125-129 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-1-125

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