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:
Sep. 06, 1994
Filed:
Sep. 23, 1993
Akihiro Kasahara, Kawasaki, JP;
Hideo Yamasaki, Yokohama, JP;
Takashi Yoshizawa, Yokohama, JP;
Sou Ishika, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An optical head comprises a laser beam source, a photo-detector device for receiving a laser beam emitted from the laser beam source and reflected at a data recording medium, an optical system for sending the laser beam from the data recording medium to the photo-detector device, and a base member for fixing the photo-detector device and the optical system. The photo-detector device has a photo-detector element, a mount member on which the photo-detector element is mounted, a block for fixing one end of the mount member, a spring member for applying elastic force to the mount member, a screw member for moving the photo-detector element along one direction against elastic force of the spring member and fixing the element to an arbitrary position, and a hinge portion formed in the fixing end of the mount member.