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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 27, Iss. 22 — Nov. 15, 1988
  • pp: 4777–4781

Point source diffraction and its use in an encoder

Jun Akedo, Haruhiko Machida, Hiroshi Kobayashi, Yoshikatsu Shirai, and Hideaki Ema  »View Author Affiliations


Applied Optics, Vol. 27, Issue 22, pp. 4777-4781 (1988)
http://dx.doi.org/10.1364/AO.27.004777


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Abstract

Diffraction from a point light source (a laser diode) was studied. The diffraction images were found to be magnified without using a lens and to move corresponding to the displacement of the slit aperture. A digital encoder using this diffraction is proposed to obtain very high resolution without a lens.

© 1988 Optical Society of America

History
Original Manuscript: September 29, 1987
Published: November 15, 1988

Citation
Jun Akedo, Haruhiko Machida, Hiroshi Kobayashi, Yoshikatsu Shirai, and Hideaki Ema, "Point source diffraction and its use in an encoder," Appl. Opt. 27, 4777-4781 (1988)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-27-22-4777

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