The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 2013
Filed:
May. 17, 2011
Masanori Ishikawa, Saitama, JP;
Masahisa Tamura, Utsunomiya, JP;
Tadanori Okada, Utsunomiya, JP;
Takumi Yamanaka, Utsunomiya, JP;
Kunihiko Sasaki, Utsunomiya, JP;
Yasushi Murakami, Utsunomiya, JP;
Shota Shimada, Tokyo, JP;
Takeya Nakayama, Utsunomiya, JP;
Masanori Ishikawa, Saitama, JP;
Masahisa Tamura, Utsunomiya, JP;
Tadanori Okada, Utsunomiya, JP;
Takumi Yamanaka, Utsunomiya, JP;
Kunihiko Sasaki, Utsunomiya, JP;
Yasushi Murakami, Utsunomiya, JP;
Shota Shimada, Tokyo, JP;
Takeya Nakayama, Utsunomiya, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
A lens-interchangeable camera includes a focus detector performing focus detection and a controller performing a drive control of a lens based on a defocus amount. The controller finishes focusing operation without driving the lens when the defocus amount is out a range of a first in-focus determination width, and performs the focusing operation when the defocus amount is out a range of the first in-focus determination width. The controller finishes the focusing operation without performing the focus detection again after completing the drive when the defocus amount is out a range of a second in-focus determination width, and performs the focus detection again after completing the drive when the defocus amount is out a range of the second in-focus determination width. The second in-focus determination width is set to be greater than the first in-focus determination width and be greater than or equal to a drive limit value.