The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1993
Filed:
May. 27, 1992
Hiroshi Yamamoto, Kanagawa, JP;
Takashi Naito, Kanagawa, JP;
Sony Corporation, , JP;
Abstract
An optical disc drive device includes an optical unit (10) and a movable pickup (11). The optical unit is fixedly provided on a chassis and has a light source for radiating a light beam towards an optical disc (13) and a light receiving section for receiving a return light beam reflected from the optical disc. The movable pickup is supported on the chassis for movement along the radius of the optical disc and has an object lens (22) for converging the light beam radiated from the light source to the surface of the optical disc and a driving unit for driving the object lens at least in a direction along its optical axis. The optical disc drive device further includes a first light incident-light outgoing section (1) for the light beam provided on the optical unit and a second light incident-light outgoing section (2) for the light beam provided on the movable pickup. The first and the second hoods (3,4) are fitted one into the other when the movable pickup approaches the optical unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile