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:
May. 19, 2015
Filed:
Sep. 14, 2012
Masaaki Uenishi, Kawasaki, JP;
Masaaki Uenishi, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image pickup apparatus includes an imaging unit configured to sequentially acquire an imaging signal while a focus lens is moving, a generation unit configured to generate a focus signal by using the imaging signal, and a control unit configured to control movement of the focus lens. The control unit performs a first operation for driving the focus lens in one direction in a range including a first area and a second area which is farther from a peak position of the focus signal than the first area. In the first operation, the control unit sets a focusing speed to a first speed when the focus lens is in the first area. When a predetermined condition is satisfied in the first operation, the control unit sets a focusing speed to a second speed faster than the first speed when the focus lens is in the second area.