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:
Mar. 03, 2009
Filed:
Jun. 22, 2006
Bruno Berge, Lyons, FR;
Jérome Peseux, Solaize, FR;
Mathieu Maillard, Lyons, FR;
Pierre Craen, Lyons, FR;
Bruno Berge, Lyons, FR;
Jérome Peseux, Solaize, FR;
Mathieu Maillard, Lyons, FR;
Pierre Craen, Lyons, FR;
Varioptic S.A., Lyons, FR;
Abstract
The invention relates to a variable-focus lens () for focusing light rays in light paths passing through the lens along an optical axis (Δ). The lens comprises an arrangement of first and second immiscible liquids () that have different refractive indices and are in contact over a moveable refractive optical interface (), a volume of gas () in contact with one of said liquids, and a retention measure () for keeping the volume of gas away from the light paths of the light rays passing through the lens for focusing.