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Patent Searching and Data


Title:
FOCAL POINT CONTROL DEVICE AND IMAGING APPARATUS
Document Type and Number:
Japanese Patent JP2010107711
Kind Code:
A
Abstract:

To solve such a problem that defocus is caused during a period from a releasing operation to the start of photographing in focal point control using a contrast detecting method.

The focal point control device includes: a position detecting means 243 for detecting the position of a focus lens 230; an imaging element 110 that creates image data by exposing at predetermined timing; a focusing state determining means 140 that calculates an evaluation value for automatic focus based on the created image data, and determines the focusing state based on the evaluation value; a focus information-holding means 141 for storing a focusing position at a point of time when the focusing state is determined; and an operating means 130 for receiving an instruction of operation including the releasing operation. Based on the focusing position stored in the focusing state-holding means 141 before the releasing operation is performed, a focusing position for photographing is calculated to perform focusing control.


Inventors:
SHIBUNO KOJI
Application Number:
JP2008279425A
Publication Date:
May 13, 2010
Filing Date:
October 30, 2008
Export Citation:
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Assignee:
PANASONIC CORP
International Classes:
G02B7/28; G02B7/36; G03B13/36; H04N5/232; H04N101/00
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano