Electronic display with lens matrix
US5043716A · kind A · utility
71Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1988 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Jul 14, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
- WIPO fieldOptics
- WIPO sectorInstruments
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. Potting compound is disposed in each light pipe and extends beyond the reflector matrix to provide a convex lens. In one embodiment the potting compound extends into a convex lens cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.