Objective lens mount for optical disc player

Details Objective lens mount for optical disc player Objective lens mount for optical disc player

1982-01-20

1984-11-13

Faber, Alan

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 45, 369112, 350255, G11B 712

Patent

active

044829868

ABSTRACT:
In an optical disc player or other apparatus in which a light beam is directed through an objective lens to be focused thereby at a record medium surface for optically reading information recorded in a track on such surface, the lens is mounted in one end of a tubular mounting member through which the path of the light beam extends longitudinally, a support member extends about the tubular mounting member, a leaf spring member, preferably of amorphous metal, extends between the other end of the tubular mounting member and the support member to permit longitudinal movements of the mounting member for correcting focusing errors, and further to permit swinging movements of the mounting member about a center located at such other end for correcting tracking and/or time base errors, and a body of substantially bulky elastic material, such as, polyurethane foam, is interposed between the support member and the tubular mounting member at a location along the latter intermediate its ends for further supporting the tubular mounting member in respect to its longitudinal and swinging movements relative to the support member.

REFERENCES:
patent: 2905054 (1959-09-01), Logan
patent: 4110008 (1978-08-01), Uesugi
patent: 4135083 (1979-01-01), Alem
patent: 4135206 (1979-01-01), Kleuters
patent: 4302830 (1981-11-01), Hamaoka

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