Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1991-10-29
1993-06-08
Dzierzynski, Paul M.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369110, 369119, G11B 700
Patent
active
052185249
ABSTRACT:
An optical disk apparatus has a light source, light focusing means for focusing the light beam to a recording film of an optical disk light reception means for receiving a reflected light beam from the recording film, and optical axis adjustment means arranged in an optical path between the light source and the light focusing means and for adjusting a dislocation of the optical axis of the light beam from the optical center axis of the light focusing means. The optical axis adjustment means has an light transmissive flat plate having parallel surfaces which are installed diagonally to the optical axis, or with the light transmissive flat plate and means which supports the light transmissive flat plate and inclines rotatably the direction of the light transmissive flat plate around two axes by turning a curved surface seat thereof.
REFERENCES:
patent: 4571650 (1986-02-01), Ojima et al.
patent: 4813032 (1989-03-01), Koyama
patent: 4863246 (1989-09-01), Anthon
patent: 4894815 (1990-01-01), Yamanaka
Patent Abstracts of Japan, vol. 10, No. 124, (P-454) (2181), May 9, 1986 & JP-A-60-251525, (Canon K.K.), Dec. 12, 1985.
Patent Abstracts of Japan, vol. 10, No. 195, (P-475) (2251), Jul. 9, 1986 & JP-A-61-039242, (Hitachi Maxell Ltd.), Feb. 25, 1986.
Ishika Sou
Kasahara Akihiro
Yamasaki Hideo
Yoshizawa Takashi
Dzierzynski Paul M.
Kabushiki Kaisha Toshiba
Nguyen Kiet T.
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