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:
Aug. 17, 1993
Filed:
Jun. 28, 1991
Akihiro Kasahara, Kawasaki, JP;
Hideo Yamasaki, Yokohama, JP;
Akira Yamada, Yokohama, JP;
Hiroshi Saito, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In an optical head, a light beam emitted from a semiconductor laser is guided to a carrier through a collimator lens and a beam splitter. An objective lens movable along an optical axis and a mirror having a oval reflecting surface are mounted on a carrier which is movable along a radial direction of an optical disk. The guided light beam is reflected from the mirror to the objective lens and is converged on the optical disk by the objective lens. The rear surface of the mirror is bonded to an adjusting member on a straight line which pass through the center gravity of the mirror and extends along the movable direction of the carrier.