Industry Patents
Patent: 5969868
Sequential Cross-Fading Color Filters and System
(Click image for PDF of full patent)
| Patent Number: |
5969868 |
| Title: |
Sequential Cross-Fading Color Filters and System |
| Abstract: |
A color filter plate includes a continuously-variable dichroic filter
coating constituting a variable band-pass or variable band-reject filter
having a spatially-modulated variable-density pattern formed in the
coating, and provides continuously-variable hue and saturation
characteristics along separate gradient axes. A color filter mechanism
includes a sequential arrangement of rectangular or circular color
filters, having continuously-variable band-pass or band-reject filter
coatings, mounted in motorized carriages. One mechanism provides two-axis
translation of the rectangular color filters while another mechanism
provides translation and rotation of the circular color filters. A light
projection system comprising a lamp with a reflector and a lens includes a
color filter mechanism having sequential, continuously-variable band-pass
and band-reject filters supported by motorized carriages mounted in a
region where the beam diameter is small.
|
| Country of Issue: |
US |
| First Named Inventor: |
Bornhorst, Hutton |
| Assignee: |
Vari-Lite |
| Continuation or Divisional of: |
5825548 |
| International Classification: |
G02B 5/28 |
| US Classification: |
359/589 |
| Issue Date: |
10-19-1999 |
| Filing Date: |
05-05-1998 |
| Application : |
09072703 |
| Notes: |
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| Link to Patent at freepatentsonline.com: |
5969868 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
5969868 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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