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:
Feb. 20, 2001
Filed:
Jul. 22, 1999
Mineki Hayafuji, Tokyo, JP;
Kabushiki Kaisha Topcon, Tokyo, JP;
Abstract
A non-contact type tonometer in which a stream of air is blown onto an eye to be examined by air stream blowing means, the deformation of a cornea caused by the air stream blowing means is optically detected by a cornea deformation detection optical system, and a control circuit calculates out the eye pressure of the examined eye on the basis of the result of the detection by the cornea deformation detecting optical system. Here, the quantity of the reflected light of a light beam projected onto the eye to be examined is obtained by a signal processing circuit. The above-mentioned control circuit compares with one another a plurality of light quantity data obtained by the signal processing circuit to make a judgement on whether the eye to be examined is a human eye or a model eye.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile