Industry Patents
Patent: 4893225
Color Changer
(Click image for PDF of full patent)
| Patent Number: |
4893225 |
| Title: |
Color Changer |
| Abstract: |
A color changer system mounted at the light beam emission end of a
luminaire. The system includes a support frame secured to the housing and
disposed transverse to the beam, a plurality of iris units each having a
plurality of colored, translucent leaves rotatably attached to the support
frame, and a circular control plate rotatably mounted to the support frame
and having a control slot in which a thrust pin of each leaf is slidably
movable and a control handle. The support frame and the control plate each
have circular apertures with centers that are aligned with the beam axis.
When the control plate is rotated, the leaves of each iris unit open or
close in response to pressure against the thrust pin so as to control the
coloring of the light beam. The leaves move inwardly from the periphery of
the light beam towards the beam axis towards a closed position or move
away from the beam axis so as to intercept all or a portion of the light
beam to color the portion of the light beam passing through the
intercepting leaves. The leaves of each iris unit each have a different
color from the leaves of the other iris units, with the colors preferably
including the primary colors of the spectrum. Mounting portions are
connected to the rims of the translucent leaves. The leaves have inwardly
extending walls that are aligned in the closed position of the system. The
walls can be either linear or curved.
|
| Country of Issue: |
US |
| First Named Inventor: |
Solomon |
| Assignee: |
Altman Stage Lighting |
| Continuation or Divisional of: |
4811182 |
| International Classification: |
F21V 9/00 |
| US Classification: |
362/293 |
| Issue Date: |
01-09-1990 |
| Filing Date: |
03-03-1988 |
| Application : |
163742 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
4893225 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
4893225 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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