Industry Patents
Patent: 4392187
Computer Controlled Lighting System Having Automatically Variable Position, Color, Intensity and Beam Divergence
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| Patent Number: |
4392187 |
| Title: |
Computer Controlled Lighting System Having Automatically Variable Position, Color, Intensity and Beam Divergence |
| Abstract: |
A lighting system (10) is disclosed which includes a control panel (12) for
operating a plurality of lights (14) by means of a single two conductor
signal cable (18) and a power cable (20). Two embodiments (30, 110) of
lights (14) are provided for use in the present lighting system. In the
first embodiment, the light (30) includes four dichroic filters (58-64)
mounted for pivotal motion on axes passing through the light path formed
by light emanating from a lamp (50). The dichroic filters may be aligned
with the light path, thereby eliminating the effect of the filters. The
dichroic filters may be singly or in combination pivoted so that the light
in the light path is incident on the dichroic filter at a predetermined
angle to transmit a preselected color therethrough. Four primary color
dichroic filters are employed. An integrating lens (100) is provided for
homogenizing the color of the light. A projection lamp (50) may be
employed with an elliptical mirror (52) which reflects light to converge
at a focus (54). A collimating lens (56) is then used to align the light
for passage through dimmer and douser units (94,90) and a focusing lens
(104). The second embodiment (110) of the light (14) includes two color
wheels (112,114) each having 32 apertures formed in their outer periphery.
Thirty one of the apertures are filled with dichroic filters to permit a
preselected color to be transmitted therethrough with one aperture left
open for passing white light. A gobo wheel (126) and an intensity wheel
(130) may also be provided. A zoom lens (134) may be provided. The
lighting system (10) permits the color, intensity, divergence and pan and
tilt of each of the lights to be adjusted from the control panel (12) for
each cue in a show. The settings for each cue during a show may be stored
in a memory and recalled to set the variable functions of each light when
desired.
|
| Country of Issue: |
US |
| First Named Inventor: |
Bornhorst |
| Assignee: |
Vari-Lite |
| Continuation or Divisional of: |
|
| International Classification: |
F21P 3/00 |
| US Classification: |
362/233 |
| Issue Date: |
07-05-1983 |
| Filing Date: |
03-02-1981 |
| Application : |
239367 |
| Notes: |
First Varilite patent, VL2 |
| Link to Patent at freepatentsonline.com: |
4392187 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
4392187 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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