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:
Jun. 27, 2000
Filed:
Apr. 22, 1996
Yoshimi Kohayakawa, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An eye measuring apparatus which, even if it is of the portable type in which it is difficult to maintain alignment, can effect accurate measurement without requiring a high skill of operation includes a light projecting system for projecting a light beam onto an eye to be examined, a light receiving system for detecting the reflected light from the eye to be examined by a light detecting element, and signal processing means for calculating the eye information of the eye to be examined on the basis of the detection by the light detecting element. The signal processing means is effective to sequentially monitor the output from the light detecting element and indicate eye refraction information on the basis of the detection by the light detecting element when a predetermined light reception signal is obtained.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile