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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 35 — Dec. 10, 1998
  • pp: 8167–8172

Semiconfocal Optical Disk Readout With One Linear-Spread Beam

Takanori Maeda and Hajime Koyanagi  »View Author Affiliations


Applied Optics, Vol. 37, Issue 35, pp. 8167-8172 (1998)
http://dx.doi.org/10.1364/AO.37.008167


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Abstract

A novel, to our knowledge, optics pickup for semiconfocal optical disk is proposed. Five tracks are imaged simultaneously by use of one linear-shaped beam that extends over the tracks in the radial direction with the focusing and the tracking position controlled. We also show how the cross talk between tracks is eliminated automatically. The approximately diffraction-limited width of the beam and the small-signal detector elements make semiconfocal detection possible in the tangential direction.

© 1998 Optical Society of America

OCIS Codes
(040.1240) Detectors : Arrays
(180.1790) Microscopy : Confocal microscopy
(210.4590) Optical data storage : Optical disks
(220.4830) Optical design and fabrication : Systems design

Citation
Takanori Maeda and Hajime Koyanagi, "Semiconfocal Optical Disk Readout With One Linear-Spread Beam," Appl. Opt. 37, 8167-8172 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-35-8167

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