Optical device and optical pickup device

Details Optical device and optical pickup device Optical device and optical pickup device

1997-03-13

1998-11-10

Swann, Tod R.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4423, G11B 712

Patent

active

058354751

ABSTRACT:
An optical pickup apparatus has an optical system and an objective lens. The optical system has a semiconductor laser and an optical element. The semiconductor laser has an astigmatic difference in which an oscillated light beam has a light emission point in a semiconductor junction plane different from that in a plane normal to the semiconductor junction plane. The optical element is arranged in a light path of a light beam radiated from the semiconductor laser for over-correcting the astigmatic aberration of the light beam radiated from the semiconductor laser. The objective lens converges the light beam radiated by the light source via the optical element.

REFERENCES:
patent: 4973832 (1990-11-01), Marchant et al.
patent: 5050153 (1991-09-01), Lee

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1524475