Release switch apparatus

Details Release switch apparatus Release switch apparatus

1995-01-23

2000-06-06

Blankenship, Howard B.

Photography

Camera release control circuit

396267, 396502, 396543, 396100, 396106, G03B 1700

Patent

active

RE0367265

ABSTRACT:
A release switch apparatus having a release button which is supported in a camera body so as to move between an initial position and a specific operational position in which the release button is pushed down. The apparatus includes a light emitter provided in the release button or in the vicinity thereof and an emission controller for causing the light emitter to emit light when the release button is moved from the initial position. A light receiver is provided in the camera body or in the release button to receive light emitted from the light emitter, and a controller is provided which operates in response to the output to the light receiver.

REFERENCES:
patent: 4230400 (1980-10-01), Wick et al.
patent: 4295724 (1981-10-01), Sahara et al.
patent: 4302084 (1981-11-01), Greenwald et al.
patent: 4464038 (1984-08-01), Nanba
patent: 4466724 (1984-08-01), Masunaga
patent: 4529291 (1985-07-01), Mizogui
patent: 5086313 (1992-02-01), Misawa
patent: 5291232 (1994-03-01), Kobayashi et al.
An English Language Abstract of Japanese Document No. 62-145232, published Jun. 1987.
DE-Journal: Funkschau 1975, No. 24 p. 59.

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