Electro-optic lens with integrated components
US7023594B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2003 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Sep 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/294
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A range finder device for use with a controller in an optical system is disclosed in accordance with one embodiment of the invention. The range finder device comprises a transmitter to produce a first beam of non-visible radiation for intersecting a perceived object, and a receiver to detect non-visible radiation reflected from that object. The controller determines a viewing distance of the perceived object based on signals received from the transmitter and receiver. A method of controlling an optical lens system comprises utilizing a range finder device to determine a viewing distance of an object perceived through an electro-active lens and adjusting a focal length of a portion of the lens based on the viewing distance. An optical lens system comprises an electro-active lens and a controller to adjust a focal length of at least a portion of the electro-active lens based on a signal from a range finder device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.