Controlling direction of light associated with a flash device
US9128352B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 3, 2012 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Jun 11, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/0521
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A flash device includes a light emitting element configured to emit light and light controlling elements. The light controlling elements include a light receiving surface and a light exiting surface that is non-parallel to the light exiting surface of an adjacent light controlling element. The light controlling elements are individually adjustable to vary a difference between an amount of light received at the light receiving surface and an amount of light exited from the light exiting surface such that amounts of light exiting respective non-parallel light exiting surfaces vary to control direction of light emitted by the flash device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.