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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 12 — Jun. 4, 2012
  • pp: 13532–13538

Compact image scanner with large depth of field by compound eye system

Hiroyuki Kawano, Tatsuki Okamoto, Taku Matsuzawa, Hajime Nakajima, Junko Makita, Naoyuki Fujiyama, Eiji Niikura, Tatsuya Kunieda, and Tadashi Minobe  »View Author Affiliations


Optics Express, Vol. 20, Issue 12, pp. 13532-13538 (2012)
http://dx.doi.org/10.1364/OE.20.013532


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Abstract

A compact image scanner is designed by using a compound eye system with plural optical units in which a ray path is folded by reflective optics. The optical units are aligned in two lines and take each image of a separated field of view (FOV), slightly overlapped. Since the optical units are telecentric in the object space and the magnification ratio is constant regardless of the object distance, the separated pieces of a total image are easily combined with each other even in the defocused position. Since the optical axes between adjacent optical units are crossed obliquely, object distance is derived from the parallax at each boundary position and an adequate deblurring process is achieved for the defocused image.

© 2012 OSA

OCIS Codes
(040.1240) Detectors : Arrays
(110.0110) Imaging systems : Imaging systems
(120.5800) Instrumentation, measurement, and metrology : Scanners
(220.0220) Optical design and fabrication : Optical design and fabrication

ToC Category:
Imaging Systems

History
Original Manuscript: March 2, 2012
Revised Manuscript: April 11, 2012
Manuscript Accepted: April 18, 2012
Published: June 1, 2012

Citation
Hiroyuki Kawano, Tatsuki Okamoto, Taku Matsuzawa, Hajime Nakajima, Junko Makita, Naoyuki Fujiyama, Eiji Niikura, Tatsuya Kunieda, and Tadashi Minobe, "Compact image scanner with large depth of field by compound eye system," Opt. Express 20, 13532-13538 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-12-13532


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