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:
Jul. 16, 1991
Filed:
Dec. 22, 1988
Yves Robert, 8044 Zurich, CH;
Other;
Abstract
The ophthalmological instrument serves for examining the background (7) of the eye with simultaneous determination of intraocular pressure. A transparent contact member (1) has a concavely curved surface (13) adapted to the curvature of the cornea (11) of the eye (6). In the center of this curved surface (13), a transparent pressure transmitting element (25) is arranged which acts on a pressure sensor (23) by way of a cavity (19) filled with a liquid (26). The contact member (1) is designed as an imaging optical component forming together with the observation optic (9) an observation device for examination of the eye background (7). Additional pressure sensors (27) are located at the rim of the concave curvature (13) of the contact member (1), these additional pressure sensors, on the one hand, monitoring an exact positioning of the contact member (1) and, on the other hand, eliminating falsification of the measured value, caused by the contact pressure of the contact member (1) against the eye (6), by means of an electronic measuring data evaluation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile