Optical pickup device

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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".

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

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

     

Profile ID: LFUS-PAI-O-773983

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.