Foldable light diffusion box with frame assembly
US6719434B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Nov 1, 2000 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | May 16, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B15/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lighting project or device has a housing having multiple adjacent sides and a front, the housing being enclosed at least between par lamp and the diffusion element. Multiple par lights are mounted to a frame and positioned to send light out the front of the device. The box also has a diffusion element (frame) disposed proximate its front end, and even may have multiple elements preferably spaced apart. The element or elements receive the light from the par lighting instruments and diffuse it to provide a soft projected light from the device. In accordance with one aspect of the invention, this light may be used to provide diffused light as part of the key lighting for a stage or set, and may provide such soft projected lighting from a front (downstage) of the stage or set. The frame also supports the housing. The frame may be rectangular. The device may also have a soft shell, may hang overhead, on a stand or by a rotatable yoke, and may have lights fixed therein. The device may also have a rear cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.