Patent · US Active

Active multifocal lens

US9829720B2 · kind B2 · utility

2Cited by

2References

13Claims

0Family size

Assignees

UNIVERSITEIT GENT · BE
IMEC VZW · BE

Inventors

Herbert De Smet · Laarne, BE
Jelle De Smet · Zwijnaarde, BE

Key dates

Filing date	Jul 5, 2014
Grant date	Nov 28, 2017
Priority date	—
Expiry date	Jul 5, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG02C2202/18
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical lens device has an actively controllable focal length. This device comprises an element with lensing effect comprising a plurality of regions. Each such region has a corresponding refractive power for providing a corresponding focal length distinct from the focal length of at least one other region of this plurality of regions. The device further comprises at least one non-centric addressable optical element integrated in or provided on the element with lensing effect. This at least one addressable optical element is adapted for changing the transmittance of at least one of the plurality of regions in response to a control signal. The device also comprises a control means for generating the control signal.

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