Dual-wavelength optical recording head utilizing grating beam sp

Details Dual-wavelength optical recording head utilizing grating beam sp Dual-wavelength optical recording head utilizing grating beam sp

1996-06-28

1997-12-09

Huber, Paul W.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369112, G11B 700

Patent

active

056967497

ABSTRACT:
In an optical system for generating a radiation beam to be applied to a data track of an optical storage medium is disclosed. The system includes first and second optical light sources producing light at different wavelengths and optics for receiving light from the first and second sources and including a selective beam splitter for selectively applying light from each optical light source to the data track of the optical storage medium and defining an optical axis for each optical light source along which light is projected to the data track.

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patent: 5557601 (1996-09-01), Nishikawa
W. Ophey, "Compact Optical Light Paths," Jpn. J. Appl. Phys., vol. 32, Part 1, No. 11B, pp. 5252-5257, Nov. 1993.
K. Hamada et al, "Optical Mass Data Storage II," Proc. SPIE vol. 695, pp. 182-186, 1986.

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