Optical system in magneto-optical recording and reproducing devi

Details Optical system in magneto-optical recording and reproducing devi Optical system in magneto-optical recording and reproducing devi

1989-10-30

1993-02-23

Levy, Stuart S.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360 59, 360114, 369110, 369 4441, 365122, 2502015, G11B 700, G01J 136

Patent

active

051896516

ABSTRACT:
A magneto-optical reproducing device in which a reflected light signal from a magneto-optical disk is divided by an astigmatic analyzer. The analyzer both divides the light signal according to linear polarization, for data signal detection, but also introduces astigmatism in one of the divided beams to allow focus detection.

REFERENCES:
patent: 3584933 (1971-06-01), Habegger
patent: 4123652 (1978-10-01), Bouwhuis
patent: 4358200 (1982-11-01), Heemskerk
patent: 4410277 (1983-10-01), Yamamoto et al.
patent: 4451863 (1984-05-01), Yanagida et al.
patent: 4464741 (1984-08-01), Compaan
patent: 4505584 (1985-03-01), Kato et al.
patent: 4546463 (1985-10-01), Opheij
patent: 4558440 (1985-12-01), Tomito
patent: 4592623 (1986-06-01), Yamamoto et al.
patent: 4730289 (1988-03-01), Saitoh et al.
patent: 4731527 (1988-03-01), Nomura
patent: 4764912 (1988-08-01), Ando
patent: 4797868 (1989-01-01), Ando
patent: 4895677 (1990-01-01), Okumura et al.
Togami et al, Amorphous GdCo disk for thermomagnetic recording, Journal of Applied Physics, vol. 53, No. 3 pp. 2335-2337.

Affiliated with

Also associated with

Rating

Optical system in magneto-optical recording and reproducing devi 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 in magneto-optical recording and reproducing devi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical system in magneto-optical recording and reproducing devi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2211388