Industry Patents
Patent: 6796682
Intra-Lens Color and Dimming Apparatus
(Click image for PDF of full patent)
| Patent Number: |
6796682 |
| Title: |
Intra-Lens Color and Dimming Apparatus |
| Abstract: |
A stage lighting instrument having a high-intensity light source or lamp
coupled with a concave reflector, and a projection optical system having a
lens system that includes an aperture stop. The lens system forms a real
image of the light source encompassing or near the aperture. A color
filter and dimming system may be located within the lens system so that
the color filter and dimming elements occupy a volume of space near the
aperture stop and within the real image of the light source. By locating
the color and dimming apparatus near the aperture stop and within the
volume occupied by a real image of the light source, superior color
mixing, dimming and integration is achieved using simple, un-patterned
filters and a simply-shaped dimmer panel. A color filter and dimming
system may alternatively be located as close to the light source as
possible so that a real image of the color filter and dimming elements is
formed near the aperture stop where the image of the light source is
formed. The alternate location, forming a real image of the filters and
dimmer, is equivalent to locating the actual color filter and dimming
elements at the aperture stop. Diffusion glass elements used in a similar
apparatus, located at the aperture stop, transform spotlight properties
into wash-light properties in a continuously-variable manner.
|
| Country of Issue: |
US |
| First Named Inventor: |
Hough, Steele |
| Assignee: |
Genlyte Thomas |
| Continuation or Divisional of: |
6578987 |
| International Classification: |
F21V 13/14 |
| US Classification: |
362/268 |
| Issue Date: |
09-28-2004 |
| Filing Date: |
10-14-2002 |
| Application : |
10/270842 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6796682 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6796682 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.
Disclaimer: This web site is not intended to offer comprehensive or sufficient
information to enable a full legal analysis of a patent or potential
infringement. The information provided on this web site is intended
as general information only, and is not intended to serve as legal
opinion, legal advice or as a substitute for legal counsel. If you
have a question about a specific factual situation, you should
contact an attorney directly
|
