Patent · US Active

Fluidic lens with manually-adjustable focus

US7948683B2 · kind B2 · utility

7Cited by
40References
56Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 12, 2010
Grant dateMay 24, 2011
Priority date—
Expiry dateApr 12, 2030

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B3/14
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A fluidic lens may have a transparent window member, a transparent distensible membrane, an inner ring between the window member and membrane, and a top ring disposed such that the membrane is between the piston ring and the inner ring. A layer of liquid may be stored between the window member, the inner ring and the membrane. The top ring may be adapted to apply a liquid displacement force to the membrane in a direction perpendicular to a plane of an aperture of the inner ring to cause a change in a radius of curvature of the membrane. The membrane may be pre-tensioned prior to assembly with the other components.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.