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. 03, 2015
Filed:
Oct. 26, 2010
Thomas Kern, Feuerthalen, CH;
Thomas Kern, Feuerthalen, CH;
Optotune AG, Dietikon, CH;
Abstract
A variable focus lens has a housing () and an actuator () which are mutually displaceable along an optical axis (A) of the lens. A primary membrane () is arranged between a first chamber () and a second chamber (), with the first and second chambers being filled with liquids of similar density but different indices of refraction. First and second auxiliary membranes () are provided for volume compensation. The first auxiliary membrane () forms a wall section of the first chamber (), and the second auxiliary membrane () forms a wall section of the second chamber (), at least one or both of the auxiliary membranes facing environmental air at its outer side.