Optotune Ag

Knowles Electronics, Inc.

Thomas Kern

Manuel Aschwanden

David Niederer

Charles William King

Daniel Max Warren

Pit Gebbers

Dennis Ray Kirchhoefer

Thomas Schmidhausler

Christoph Romer

Shu-Heng Yang

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.

Variable focus lens having two liquid chambers

An optical apparatus includes a first membrane, a second membrane and at least one electromagnetically displaceable component. The first membrane includes an optically active area. The first membrane and the second membrane are coupled by a filler material disposed in a reservoir. At least one electromagnetically displaceable component is coupled to the filler material via the second membrane, such that a displacement of the at least one electromagnetically displaceable component is operative to cause a deformation of the optically active area of the first membrane by movement of the filler material.

Lens assembly apparatus and method

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Zurich, Switzerland

Thomas Kern