Optical head

Details Optical head Optical head

1991-04-16

1992-09-15

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369286, 369 4411, G11B 726

Patent

active

051484218

ABSTRACT:
In an optical disc recording-reproducing apparatus using a standard optical disc enclosed in a cartridge, and optical plate for correcting various aberrations generated by a focusing lens is comprised therein in order to allow use of a double recording optical disc enclosed in the standard cartridge of the same size, the optical plate is placed in front of a focusing lens when the double recording optical disc is used, and is removed from the front of the focusing lens when the standard optical disc is used.

REFERENCES:
patent: 4561086 (1985-12-01), Geyer
patent: 4712207 (1987-12-01), Reno
patent: 4837758 (1989-06-01), Motoyama et al.
patent: 4892606 (1990-01-01), Miyazaki et al.
patent: 4959824 (1990-09-01), Ueda et al.

Affiliated with

Also associated with

Rating

Optical head does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical head will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-742307