Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 15, 2008
Patent Application Number
10407155
Date Filed
April 4, 2003
Patent Primary Examiner
Patent abstract
A focusing apparatus includes a filter unit for performing frequency filtering processing on an image pickup signal, and a focus position detecting unit for detecting a focus position based on the contrast value of the image pickup signal having undergone the frequency filtering processing by the filter unit. The filter unit has a first filter for normal position detection, and a second filter for infinity position detection having a frequency characteristic different from that of the first filter, and selects the first filter or the second filter.
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