Electronic display with lens matrix
US4603496A · kind A · utility
74Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1985 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Feb 4, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2013/222
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic display includes a matrix of LEDs mounted to a circuit board and selectively operated to produce a message or image. A reflector matrix mounts to the circuit board and provides light pipes which extend forward from each LED to direct its light and provide protection. A lens matrix is mounted to the reflector matrix and it provides convex lenses which are aligned to be received in the light pipes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.