Optical pickup device

Details Optical pickup device Optical pickup device

1996-06-07

1997-09-30

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4423, 369 4432, G11B 7135

Patent

active

056732465

ABSTRACT:
An optical pickup device which makes a numerical aperture of an object lens in a radial direction of an optical disk smaller than that in a tangential direction to a track on the optical disk. With this feature, a spot diameter in the tangential direction to the track becomes smaller than that in the radial disk in the data recorded surface thereof, and it is possible to prevent degradation of a MTF as well as to accurately read data recorded in the high-density optical disk.

REFERENCES:
patent: 5164573 (1992-11-01), Ishikawa

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-2262101