Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1992-12-23
1994-09-27
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
257435, H01J 314
Patent
active
053509170
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: 4772784 (1988-09-01), Yoshitoshi et al.
Patent Abstracts of Japan Publication No. JP-41-77643.
Patent Abstract of Japan JP 56107247.
Kojima Chiaki
Taniguchi Tadashi
Le Que T.
Nelms David C.
Sony Corporation
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