Industry Patents
Patent: 4897770
Symmetrical Color Changer System
(Click image for PDF of full patent)
| Patent Number: |
4897770 |
| Title: |
Symmetrical Color Changer System |
| Abstract: |
A color changer system including a pair of slidable color filter plates or
a pair of rotatable color filter disks positioned on opposed side of a
beam aperture through which a beam of white light passes. The pair of
filter plates or filter disks are simultaneously movable or rotatable,
respectively, across the beam aperature orthogonal to the beam axis so as
to enhance a particular color. The movement of the filter plates or disks
are movable into the beam symmetrical to the center of the beam aperture
so that distribution of color saturation of the beam is symmetrical about
the center of the beam aperture during movement of said first and second
color filter means. Progressive variable filtering regions defining a
plurality of color enhancing capacities either included diffused color
filtering material or dichroic color filtering material. When the dichroic
color filtering material is used, alternating clear and dichroic filtering
strips are located in each filtering region. When the pair filter plates
or filter disks overlap, the clear and dichroic filtering strips of each
pair complement so that the lightwaves of the beam are filtered through
only one of the pair of plates or strips.
|
| Country of Issue: |
US |
| First Named Inventor: |
Solomon |
| Assignee: |
Altman Stage Lighting |
| Continuation or Divisional of: |
|
| International Classification: |
F21V 9/00 |
| US Classification: |
362/293 |
| Issue Date: |
01-30-1990 |
| Filing Date: |
03-04-1988 |
| Application : |
164397 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
4897770 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
4897770 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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