Compact optical pickup apparatus for optical disk player

Details Compact optical pickup apparatus for optical disk player Compact optical pickup apparatus for optical disk player

1988-04-15

1990-07-31

Psitos, Aristotelis M.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369122, 372 36, 372 37, 250239, 357 19, G11B 700, H01J 502, H01S 319

Patent

active

049455249

ABSTRACT:
An optical pickup apparatus is disclosed which comprises an optical detector formed on a substrate for detecting light reflected by a recording medium, a pattern formed on the substrate, a first block on which the substrate is fixed, a first reference surface formed on the first block substantially in parallel with an optical axis of the light to be detected, a second block arranged to be movable so as to be adjusted in a plane perpendicular to the optical axis and to support the first block, a second reference surface formed on the second block so as to correspondingly contact with the first reference surface; and a relay substrate fixed on the second block and electrically connected to the pattern.

REFERENCES:
patent: 4159221 (1979-06-01), Schuessler
patent: 4337531 (1982-06-01), Willemsen
patent: 4352120 (1982-09-01), Kurihara et al.
patent: 4650285 (1987-03-01), Stevenson
patent: 4686678 (1987-08-01), Ohta et al.
patent: 4752109 (1988-06-01), Gordon et al.
patent: 4757197 (1988-07-01), Lee
patent: 4764931 (1988-08-01), Matsuda
patent: 4768070 (1988-08-01), Takizawa et al.
patent: 4797895 (1989-01-01), Kobubo et al.
Article by Mr. Shikama-vol. 58, No. 11, 1984, pp. 742-744.
Abstract of JP 55-130150 12/25/80.

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