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:
Mar. 29, 1988
Filed:
Dec. 05, 1984
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Denshi K.K., Chichibu, JP;
Abstract
An optical head device comprising a light source unit, a deflecting element for changing the direction of travel of a light beam emitted from the light source unit, and a condensing element for condensing the light beam on a recording medium. A movable portion is formed so that the deflecting element and the condensing element move substantially together with each other relative to the recording medium, and the deflecting element is designed such that the variation in direction of the emergent light beam from the movable portion caused by the rotative displacement of the movable portion with respect to at least one axis can be decreased.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile