Patent Number: 7,085,065

Title: Variable focus optical apparatus

Abstract: A variable focus lens apparatus for use in spectacles or the like is formed from a fluid envelope comprising two sheets, at least one of which is flexible. The flexible sheet is retained in place between two rings, which are directly secured together. This may be by means of adhesive, ultrasonic welding, or any similar process. If the other sheet is rigid, then it may be directly secured to one of the rings.

Inventors: Silver; Joshua D. (Oxford, GB)

Assignee:

International Classification: G02B 1/06 (20060101); G02B 3/12 (20060101)

Expiration Date: 8/01/02018