Aperture construction for a mobile camera
US7585122B2 · kind B2 · utility
14Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2006 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Feb 16, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An adjustable aperture construction for a camera comprises at least two electrodes, and an electrical circuit for applying a voltage to the electrodes in order to create an electric field between the electrodes. In addition the construction comprises a center unit with a hole in the middle as an aperture, where the center unit is made of an electroactive material and placed essentially between the electrodes. The center unit is then deformed, expanded or retracted by applying the electric field between the electrodes using the electrical circuit thereby adjusting the aperture in the center unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.