Industry Patents
Patent: 7543951
Methods and Apparatus For Providing a Luminous Writing Surface
(Click image for PDF of full patent)
| Patent Number: |
7543951 |
| Title: |
Methods and Apparatus For Providing a Luminous Writing Surface |
| Abstract: |
Disclosed herein are methods and apparatus for providing a luminous
writing surface, whose color, color temperature, and/or brightness are
controlled to achieve a desired contrast between the writing surface and
markings removably made thereon. For example, LED-based light sources
and/or LED-based controllable lighting units can be employed to
back-light or edge-light a transparent or translucent material thereby
providing the luminous writing surface.
|
| Country of Issue: |
US |
| First Named Inventor: |
Koerner, Dowling |
| Assignee: |
Philips SSL |
| Continuation or Divisional of: |
|
| International Classification: |
F21V 33/00 |
| US Classification: |
362/99 |
| Issue Date: |
06-09-2009 |
| Filing Date: |
04-30-2007 |
| Application : |
11/741986 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7543951 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7543951 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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