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, 1990
Filed:
Jun. 29, 1988
Synthelabo, Paris, FR;
Abstract
This invention relates to an optical system for determining the curvature or the modification of curvature of an object on a zone of small dimensions, wherein it comprises: a light source; first optics adapted to form a parallel light beam from the beam emitted by said source; a semireflecting element disposed on the path of said parallel beam; second focussing optics receiving the parallel beam reflected by said element and being capable of moving parallel to the direction of propagation of said light beam, so that their image focus merges with the center of curvature or the surface of said object; third focussing optics receiving the beam reflected by the object, and means for detecting the image formed by said system. The invention is more particularly applicable in keratometry.