Optical head

Details Optical head Optical head

1993-09-23

1994-09-06

Psitos, Aristolelis

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 44140, 250239, G11B 700, H01J 502

Patent

active

053454324

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.

REFERENCES:
patent: 4550352 (1985-10-01), Nakao
patent: 4634853 (1987-01-01), Kanamaru
patent: 4792674 (1988-12-01), Hirano
patent: 4859847 (1989-08-01), Matsuno et al.
patent: 5023858 (1991-06-01), Nakayama

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