Optical pickup device

Details Optical pickup device Optical pickup device

1992-02-14

1992-09-01

Envall, Jr., Roy N.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4423, 369 4441, 369 4442, G11B 700

Patent

active

051446146

ABSTRACT:
An optical pickup device is disclosed in which a light beam from a laser light source is converged by an object lens on a signal recording surface of an optical disk to follow recording tracks formed on the signal recording surface to read out or write data on or from the signal recording surface. A semiconductor laser unit is used as a laser light source and is so arranged that the meridional plane of the light beam emanating from the semiconductor laser unit is inclined 30.degree. to 60.degree. with respect to the tangential direction of the recording track.

REFERENCES:
patent: 4767921 (1988-08-01), Kawasaki et al.
patent: 4819220 (1989-04-01), Miyazaki et al.
patent: 4969137 (1990-11-01), Sugiyama et al.
Jee Journal of Electronic Engineering, vol. 24, No. 248, Aug. 1987, Tokyo JP, pp. 31-34; Kazuki Urita: "Semiconductor lasers for Optical Memory Disks: High Output and Low Noise Required".

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-773983