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Electronic still camera

  • US 5,099,334 A
  • Filed: 09/13/1989
  • Issued: 03/24/1992
  • Est. Priority Date: 09/14/1988
  • Status: Expired due to Term
First Claim
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1. An electronic still camera having a mechanical diaphragm mechanism for controlling exposure of an image surface, said diaphragm mechanism comprising:

  • a freely moving diaphragm plate formed to have a plurality of openings, said plurality of openings including,an opening of an aperture greater than an effective aperture corresponding to an open f-stop value, andat least one opening equal to an effective aperture corresponding to an f-stop value; and

    a drive mechanism for displacing said diaphragm plate, in dependence upon exposure to be controlled, in such a manner that one of said plurality of openings arrives at a position of an optic axis.

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