Industry Patents
Patent: 4984143
Color Filter Changer
(Click image for PDF of full patent)
| Patent Number: |
4984143 |
| Title: |
Color Filter Changer |
| Abstract: |
Spectral filter means (20) in which filter elements (22) have elongated
planar surface areas covered with patterns of filtering material (44, 84,
94). Filter elements are independently movable parallel to their
respective surface planes to positions (32) where a given density pattern
of filtering material is intersected by a beam of light and filters a
given component of the light. Separate filter elements (22a, 22b, 22c) for
each of the primary colors and an additional element (22d) for dimming all
colors are used to control the color and intensity of a beam of light.
|
| Country of Issue: |
US |
| First Named Inventor: |
Richardson |
| Assignee: |
Morpheus Lights |
| Continuation or Divisional of: |
4914556 |
| International Classification: |
G02B 5/22 |
| US Classification: |
362/293 |
| Issue Date: |
01-08-1991 |
| Filing Date: |
09-14-1989 |
| Application : |
407392 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
4984143 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
4984143 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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