Industry Patents
Patent: 4779176
Light Pattern generator
(Click image for PDF of full patent)
| Patent Number: |
4779176 |
| Title: |
Light Pattern generator |
| Abstract: |
A light pattern generator is utilized to produce an image which is
projected onto a stage or screen. The image is derived from a beam of
light. The light pattern generator comprises a heat resistant glass plate
having a reflective layer deposited on one surface thereof. A
nonreflective layer is deposited on the surface of the reflective layer.
Both of the layers are etched to produce an opening extending through the
layers wherein the opening has the shape of the desired image. The beam of
light is directed through the transparent plate and the portions not
passed through the opening are reflected by the mirror surface of the
reflective layer. This prevents the buildup of heat within the light
pattern generator. Any extraneous light which is received at the
nonreflective layer is absorbed to prevent the escape of unwanted light
and its projection to the stage.
|
| Country of Issue: |
US |
| First Named Inventor: |
Bornhorst |
| Assignee: |
Vari-Lite |
| Continuation or Divisional of: |
|
| International Classification: |
F21M 21/00 |
| US Classification: |
362/223 |
| Issue Date: |
10-18-1988 |
| Filing Date: |
07-16-1986 |
| Application : |
887368 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
4779176 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
4779176 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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