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:
Apr. 07, 2009
Filed:
Nov. 22, 2005
Applicants:
Bruno Berge, Lyons, FR;
Jérôme Peseux, Solaize, FR;
Frédéric Laune, Villefontaine, FR;
Inventors:
Assignee:
Varioptic S.A., Lyons, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 3/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lens assembly of variable focal length comprises two transparent plates () at least partially facing each other and parallel to one another and delimiting, at least in part, an internal volume () containing two non-miscible liquids having different optical indices. The lens comprises an elastic element () capable of deforming in response to a change in pressure of the liquids, in such a way as to substantially maintain the optical properties of the lens assembly, e.g., in order to maintain the parallelism of the two transparent plates.