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. 01, 1983
Filed:
Aug. 21, 1980
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An eye-fundus examining instrument is provided with a phototaking system, an illumination system for illuminating the fundus of an eye, a projecting system for projecting a focus mark and a comparison mark, a finder coupled to the phototaking system for observing therethrough the fundus of the eye, the focus mark and the comparison mark, a linear photosensor array for detecting the focus mark image reflected by the fundus of the eye, a light-receiving system focused to the fundus of the eye simultaneously with the phototaking system and the projecting system, a focusing mechanism for focusing the phototaking system to the fundus of the eye, a manual adjust member for manually driving the focusing mechanism, a servomotor for driving the focusing mechanism, a control circuit for controlling the servomotor by the output of the linear photosensor array, and a switch for selecting the power supply to the control circuit.