Release switch apparatus
First Claim
1. A release switch apparatus having a release button which is supported in a camera body so as to move in a predetermined direction between an initial position and a specific operational position in which said release button is pushed down, comprising:
- a light emitter provided in one of said release button or said camera body;
emission control means for causing said light emitter to emit light when said release button is moved from said initial position;
a light receiver which is provided in the other one of said camera body or said release button to receive light emitted from said light emitter; and
,control means which operates in response to the output of said light receiver.
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Accused Products
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.
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Citations
34 Claims
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1. A release switch apparatus having a release button which is supported in a camera body so as to move in a predetermined direction between an initial position and a specific operational position in which said release button is pushed down, comprising:
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a light emitter provided in one of said release button or said camera body; emission control means for causing said light emitter to emit light when said release button is moved from said initial position; a light receiver which is provided in the other one of said camera body or said release button to receive light emitted from said light emitter; and
,control means which operates in response to the output of said light receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A release switch apparatus having a release button which supported in a camera body so as to move between an initial position and an operational position in which said release button is pushed down to a specific position, comprising:
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a light emitter which is provided in one of said release button or said camera body; emission control means for causing said light emitter to emit light when said release button is moved from said initial position; a light receiver which is provided in the other one of said camera body or said release button to receive light emitted from said light emitter; and control means which operates in response to the output of said light receiver; said release button being provided with an optical path which breaks and establishes an optical connection of said light emitter and said light receiver at said initial position and said specific position, respectively.
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Specification