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. 06, 2018
Filed:
Feb. 26, 2015
Essilor International (Compagnie Generale D'optique), Charenton-le-Pont, FR;
Guilhem Escalier, Charenton-le-Pont, FR;
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), Charenton-le-Pont, FR;
Abstract
An optical instrument includes: a collimation element () having a focal distance; a point light source (-) with a wavelength of between 700 and 1000 nm and a diameter less than or equal to a fiftieth of the focal distance, placed at a first focus of the collimation element, so that the light becomes a beam () of collimated light; a backscatterer (); a support for receiving an ophthalmic lens (), with the collimation element, support and backscatterer being placed so that the beam of collimated light encounters the lens location () where micro-etching is present; an image analyzing element () and an image capture element () linked to the analyzing element and including an objective lens () placed at a second focus of the collimation element, which objective lens is developed to provide the analyzing element with images of the backscatterer in order to identify and locate the micro-etching.