Industry Patents
Patent: 7170679
Optically Active Color Filter
(Click image for PDF of full patent)
| Patent Number: |
7170679 |
| Title: |
Optically Active Color Filter |
| Abstract: |
An optically active color filter for controlling the color of light
produced by a light source. The color filter includes an optically active
device positioned between a linear polarizer and an adjustable position
linear polarizer whose orientation can be controlled mechanically or
electrically. In a preferred embodiment, the optically active device
contains a liquid optically active substance such as high maltose corn
syrup. The optically active color filter may be used for controlling the
color of a light source such as a stage light or spotlight and in other
applications requiring a device for controlling the color of a light
source.
|
| Country of Issue: |
US |
| First Named Inventor: |
Bievenour, Lieberman |
| Assignee: |
Vision Quest Lighting |
| Continuation or Divisional of: |
|
| International Classification: |
G02B 27/28 |
| US Classification: |
359/498 |
| Issue Date: |
01-30-2007 |
| Filing Date: |
09-18-2003 |
| Application : |
10/664395 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7170679 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7170679 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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