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. 29, 1989
Filed:
Jul. 22, 1988
Nobuyoshi Andou, Amagasaki, JP;
Hitoshi Imai, Amagasaki, JP;
Mitsubishi Denki Kabushiki, Tokyo, JP;
Abstract
The present invention relates to an optical head for optically recording or reproducing information. In the optical head of the present invention a holder is provided with an optical element fixedly attached thereto. The holder is axially movable in a guide bore of a housing member and a tapped hole is formed in the circumference of the housing member which hole does not reach the guide bore so as to create a deformable bottom hole portion. When a screw is screwed into the tapped hole it presses against and deforms the bottom hole portion so as to engage the holder. Accordingly, with the optical head according to the present invention, the rotational torque generated when the screw is rotated is absorbed in the bottom portion of the tapped hole, so that the holder is not moved when the screw is screwed into the tapped hole, whereby the optical element fixedly disposed on the holder can be easily positioned at an appointed position.