Prism light guide luminaire
US4615579A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1983 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Aug 29, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The luminaire for a prism light guide system consists of a longitudinal hollow structure made of transparent dielectric material. The structure has inner and outer surfaces which are in octature, and at least a portion of one outer surface that has a light release mechanism. The light release mechanisms include a non-planar surface, a rough outer surface, or round corners in a corrugated outer surface. The luminaire can further include a device positioned within the hollow structure for increasing the divergence angle .theta. of the light. It can consist of a diffusion screen or a mirror. Some of the walls may also be covered by a reflective material to redirect any escaping light back into them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.