Opto-magnetic recording polarization optical apparatus having a

Details Opto-magnetic recording polarization optical apparatus having a Opto-magnetic recording polarization optical apparatus having a

1994-01-11

1995-03-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

257436, 369112, H01J 314

Patent

active

053960610

ABSTRACT:
In an optical apparatus according to the present invention, a light-absorbing film is formed between a light-receiving element and an optical semitransparent film formed on the light-receiving element to cause the light-receiving element to partially receive incident light. In addition, in an optomagnetic recording polarization optical apparatus according to the present invention, a prism for guiding a reflected light component from an optomagnetic recording medium to a light-receiving element and the light-receiving element are arranged on the same substrate.

REFERENCES:
patent: 4262198 (1981-04-01), Gupta et al.
patent: 4695719 (1987-09-01), Wilwerding
patent: 4725725 (1988-02-01), Ando 250216

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