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:
Nov. 30, 1993
Filed:
Jul. 10, 1991
Kabushiki Kaisha Toshiba, , JP;
Abstract
An auto focus apparatus for a camera comprising a group of lenses which include a focus lens and a zoom lens. The auto focus apparatus also comprises a focus detector, a motor and a controller. The focus detector detects whether the camera is in focus or not. The motor drives the focus lens and zoom lens. The controller controls the motor for driving the zoom lens and the focus lens. When the focus detector does not detect a focused image through the focus lens, the zoom lens is then driven to focus the camera. A method of auto focusing comprises the step of driving a focus lens so as to obtain a focusing point. The method of auto focusing also comprises the steps of detecting whether the camera is in focus or not, and driving the zoom lens when a focusing point is not achieved by the focus lens.