Light output device and control method
US8665399B2 · kind B2 · utility
1Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2008 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Nov 7, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a light output device (10) comprising a plurality of light source units (18) arranged in a laminated glass structure. The light output device is characterized by a plurality of switchable liquid crystal-based (24) devices arranged to alter the beam shapes of light emitted by the light source units when in a beam shape altering mode. The present invention also relates to a method for controlling a light output device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.