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:
Sep. 13, 1988
Filed:
Feb. 20, 1987
Sony Corporation, Tokyo, JP;
Abstract
An automatic focusing system includes a photo-sensitive element for receiving light passing a main lens system of a camera. The photo-sensitive element produces a distance indicative signal based on the received light. The main lens system is driven to a position to focus upon an object on the basis of the distance indicative signal from the photo-sensitive element. The system is also provided with an auxiliary light generating element for emitting an auxiliary light to the object. The auxiliary light generating element is activated while distance measurement is performed for focusing operation in order to enable the automatic focusing system to perform a distance measurement and focus upon the object even in dark environmental conditions or upon dark objects. The auxiliary light generating element may be selected to emit an infrared light beam or a far infrared light beam.