Lightweight low-loss refractive light diffusion system
US5247390A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1991 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Nov 5, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/0278
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light system comprising a light source adapted to illuminate an area and at least two refracting substantially transparent and coextensive films juxtaposed with one another and interposed between the source and the area, the films having mutually confronting patterns of refracting rises formed on respective surfaces of the films, the rises being separated by intervening recesses and the rises and recesses being so oriented as to form diversely distributed light-refraction paths across the films, the patterns being selected so that gaps are provided between the films and to effect diffusion of light from the source cast upon the area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.