Light reflecting device
US4293189A · kind A · utility
7Cited by
12References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 20, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Mar 20, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/128
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light reflecting device comprising a light reflecting surface and fine spherical glass beads arranged in front of the reflecting surface. The device comprises a light transmitting layer covering the glass beads and having an outer surface which is not planar but includes projections and indentations substantially conforming to the contours of the glass beads so that the device can be observed with extreme ease and distinctness not only from the position of the light source or the vicinity thereof but also from other positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.