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CAMERA WITH AUTOFOCUS SYSTEM

  • US 20070071434A1
  • Filed: 09/25/2006
  • Published: 03/29/2007
  • Est. Priority Date: 09/26/2005
  • Status: Abandoned Application
First Claim
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1. A camera comprising:

  • a contrast detector that successively detects contrast data of an object image that is formed on a light-receiving surface of an image sensor;

    a focus detector that detects a focused situation on the basis of the contrast data; and

    a focus adjuster that focuses the object by driving a photographing optical system, said focus adjuster driving said photographing optical system so as to shift the image-formed surface forward and backward to the light-receiving surface when the object is out of focus, said focus detector detecting standard contrast data corresponding to a position before shifting the image-formed surface, forward contrast data corresponding to a forward position, and backward contrast data corresponding to a backward position, said focus adjuster shifting the image-formed surface toward a direction of increase of the contrast data that is obtained from the standard contrast data, the forward contrast data, and the backward contrast data.

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