Lighting system
US8231249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2008 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Apr 30, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/0592
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lighting system is provided that includes: an optical device including a cylindrical lens made up of a liquid lens, an emission unit including an axis line in the Z-axis direction, and a reflecting mirror configured to reflect light emitted from the emission unit. The cross-sectional shape of a light reflecting portion when cutting away the reflecting mirror at a virtual plane perpendicular to the Z axis is a part of a parabola. The axis line of the emission unit is positioned between the vertex-of the parabola and a focal point. Thus, there is provided a lighting system in which an optical device, which is made up of a liquid lens employing an electrowetting phenomenon, having an arrangement and configuration whereby high optical power can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.