Backlit sign exhibiting brightness and color uniformity
US9361814B2 · kind B2 · utility
0Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2014 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | May 21, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2013/222
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A backlit sign exhibiting a uniform illumination intensity pattern is achieved in a structure having a light transmissive front panel, a back panel, and a plurality of backlight modules disposed on a surface of the back panel that faces the front panel, wherein the backlight modules are spaced apart in an array, and each module includes at least one LED and a lens member having a lens portion that collects light from the LED and redirects the light into a generally square illumination pattern on the front panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.