Photodetector having convex window for shielding electromagnetic

Details Photodetector having convex window for shielding electromagnetic Photodetector having convex window for shielding electromagnetic

1989-02-03

1990-08-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Housings

250216, H01J 502

Patent

active

049489690

ABSTRACT:
A photodetector including a reception portion and a shield casing for performing electromagnetic shielding of the reception portion, in which a light receiving window confronting the reception portion is formed on the shield casing convexly in a direction away from the reception portion and a plurality of holes for directing light signals towards the reception portion are formed on a peripheral surface of the light receiving window.

REFERENCES:
patent: 4498767 (1985-02-01), McGovern et al.
patent: 4555626 (1985-11-01), Suzuki
patent: 4672206 (1987-06-01), Suzuki et al.

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