Optical system for optical memory device

Details Optical system for optical memory device Optical system for optical memory device

1992-02-26

1992-09-29

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369112, 369 4414, G11B 709

Patent

active

051518902

ABSTRACT:
An optical system for an optical memory device has a sectional optical system employing an objective lens and a polariscope, e.g., a deflecting system or a galvanomirror, which drives a reflecting mirror, to change the direction of the light beam for tracking purposes. An a focal optical system is included comprising a first optical system with a positive refracting power and positioned in the optical path between the objective lens and the polariscope and a second optical system with a positive refracting power and positioned between the first optical system and the objective lens whereby the maximum light beam shift or displacement, such as caused by moving components in the optical system, e.g., the beam deflecting system or galvanomirror or the linear access actuator, is substantially zero or kept to a minimum, for example, about 0.27 mm.

REFERENCES:
patent: 4125859 (1978-11-01), Oshida et al.
patent: 4432085 (1984-02-01), Reno et al.
patent: 4466087 (1984-08-01), Cheng
patent: 4549288 (1985-10-01), Chan
patent: 4823334 (1989-04-01), Tanaka et al.
patent: 4959824 (1990-09-01), Ueda et al.
patent: 4969137 (1990-11-01), Sugiyama et al.
patent: 5052767 (1991-10-01), Sugata et al.
K. Koumura et al., vol. 1078, pp. 239-242 (1989).
K. Koumura et al., "High Speed Accessing Using Split Optical Head", Optical Data Storage Topical Meeting, SPIE, vol. 1078, pp. 239-242, 1989.

Affiliated with

Also associated with

Rating

Optical system for optical memory device 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 system for optical memory device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical system for optical memory device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1973916