Industry Patents
Patent: 5426576
Colour Cross-Fading System for a Luminaire
(Click image for PDF of full patent)
| Patent Number: |
5426576 |
| Title: |
Colour Cross-Fading System for a Luminaire |
| Abstract: |
A color cross-fading system for a luminaire includes two filter disks or
strips each provided with a multi-layer filter coating to provide a
dichroic filter effect. In each case the thickness of the coating layers
varies continuous along a gradient axis of the filter disk or strips. One
disk acts predominantly as a long wave pass filter and the other act
predominantly as a short wave pass filter, but each disk has an
essentially "complex" characteristic enabling a very wide range of
different colors to be obtained by cumulative subtractive filtering, by
varying the positions of the two disks or strips relative to an optical
axis.
|
| Country of Issue: |
US |
| First Named Inventor: |
Hewlett |
| Assignee: |
Light & Sound Design |
| Continuation or Divisional of: |
|
| International Classification: |
F21V 9/00 |
| US Classification: |
362/293 |
| Issue Date: |
06-20-1995 |
| Filing Date: |
04-23-1993 |
| Application : |
51373 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
5426576 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
5426576 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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