Illuminator
US4128332A · kind A · utility
66Cited by
9References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1976 |
| Grant date | Dec 5, 1978 |
| Priority date | — |
| Expiry date | Feb 9, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/542
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An illuminator including an internally reflecting light conduit and a light source to illuminate at least one of its ends. The longitudinal surface of the light conduit has a coating arranged in desired geometry to allow the escape of light from the conduit in accordance with the geometry to illuminate an object as desired. The coatings disclosed are a diffuse material to scatter light internally of the conduit, and a transparent material of refractive index greater than that of the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.