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Applied Optics

Applied Optics


  • Vol. 31, Iss. 11 — Apr. 10, 1992
  • pp: 1794–1802

Real-time fingerprint sensor using a hologram

Seigo Igaki, Shin Eguchi, Fumio Yamagishi, Hiroyuki Ikeda, and Takefumi Inagaki  »View Author Affiliations

Applied Optics, Vol. 31, Issue 11, pp. 1794-1802 (1992)

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A holographic fingerprint sensor has been developed for a system that identifies a person by his or her fingerprints. The sensor uses a laser as its light source and consists of a light-conducting plate, which is a transparent glass plate with a plain grating-type hologram, and a focusing lens system just under the hologram. Since the sensor uses a plane-parallel plate, all the optical paths from each point of a fingerprint to the hologram are equal, and a bright fingerprint can be created without the trapezoidal distortion that is inherent in conventional prism-type sensors.

© 1992 Optical Society of America

Original Manuscript: May 26, 1989
Published: April 10, 1992

Seigo Igaki, Shin Eguchi, Fumio Yamagishi, Hiroyuki Ikeda, and Takefumi Inagaki, "Real-time fingerprint sensor using a hologram," Appl. Opt. 31, 1794-1802 (1992)

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  1. M. Kawagoe, A. Tojo, “Fingerprint pattern classification,” Pattern Recognition 17, 295–303 (1984). [CrossRef]
  2. A. Shimisu, M. Hase, “Entry method of fingerprint image using a prism,” Trans. Inst. Electron. Commum. Eng. Jpn. J67-D, 627–628 (1984).

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