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Applied Optics

Applied 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)

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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

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

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)

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  2. S. Yamamoto, H. Hayashi, S. Yano, T. Hijikata, “Visible GaAlAs V-Channeled Substrate Inner Stripe Laser with Stabilized Mode Using p-GaAs Substrate,” Appl. Phys. Lett. 40, 372 (1982). [CrossRef]
  3. S. Kataoka, Y. Shibata, K. Takahasi, H. Yamazaki, Sensor Handbook (Baifukan, Tokyo, 1986), pp. 430–435.
  4. S. Moriyama, T. Harada, “A Precision Displacement Measurement Using a Diffraction Grating,” J.J.S.P.E., 49, No. 6, 94 (1983).
  5. H. Kubota, Wave Optics (Iwanami Shoten, Tokyo, 1971), p. 244 Eq. (18-16). (1971).
  6. H. Machida, J. Nitta, A. Seko, H. Kobayashi, “High-Efficiency Fiber Grating for Producing Multiple Beams of Uniform Intensiy,” Appl. Opt. 23, 330 (1984). [CrossRef] [PubMed]
  7. M. C. Hutley, Diffraction Gratings (Academic, New York, 1982), p. 293.

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