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Release apparatus for a camera

  • US 4,757,337 A
  • Filed: 03/25/1986
  • Issued: 07/12/1988
  • Est. Priority Date: 03/26/1985
  • Status: Expired due to Term
First Claim
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1. A release apparatus for a camera, comprising:

  • (a) detecting means for detecting a change of temperature within an image plane of the camera in response to an increase in said temperature to produce a first signal, and in response to a decrease in said temperature to produce a second signal;

    (b) trigger signal forming means for producing a trigger signal in a prescribed time from the production of said first signal and, when said second signal is produced before said prescribed time has elapsed, prohibiting said trigger signal from being produced; and

    (c) means responsive to said trigger signal for performing a release operation of the camera.

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