Magneto-optical reproducing device with optical system having tw

Details Magneto-optical reproducing device with optical system having tw Magneto-optical reproducing device with optical system having tw

1992-08-14

1994-05-03

Dzierzynski, Paul M.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 13, 369288, 360114, G11B 700

Patent

active

053094239

ABSTRACT:
A reflected light beam from a magneto-optic disk is reflected by a first and second reflective element toward a signal detecting system. The first reflective element reflects the reflected light from the magneto-optic disk and gives a phase difference into the light beam. The second reflective element reflects the reflected light by the first reflective element toward the signal detecting system, and gives a phase difference which has the same amount as the phase difference caused by the first reflective element, but with the inverse sign thereof.

REFERENCES:
patent: 4553229 (1985-11-01), Wakamiya
patent: 4573149 (1986-02-01), Deguchi et al.
patent: 5085496 (1992-02-01), Yoshida et al.
patent: 5119352 (1992-06-01), Bell, Jr.
patent: 5124868 (1992-06-01), Matsubayashi et al.
patent: 5202860 (1993-04-01), Takahashi et al.

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