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. 22, 2010
Filed:
Nov. 24, 2005
Fabien Divo, Charenton, FR;
James Thepot, Charenton, FR;
Fabien Divo, Charenton, FR;
James Thepot, Charenton, FR;
Essilor International (Compagnie Generale d'Optique), Charenton-le-Pont, FR;
Abstract
The measurement apparatus includes: a support arranged to receive a lens; lighting element including an optical system for generating a collimated light beam directed towards the lens under measurement installed on the support; detachment elements for detaching light rays from the light beam, for detaching a localized group of at least three non-coplanar light rays grouped together about a measurement axis in a measurement cylinder of section substantially smaller than the section of the lens under measurement; acquisition elements for identifying the deflections imparted by the lens on the detached light rays and for delivering a signal representative of the deflections; and an electronic and computer system programmed to deduce from said deflections the value of the refractive characteristic of the lens at the measurement point.