Industry Patents
Patent: 5790329
Color Changing Device for Illumination Purposes
(Click image for PDF of full patent)
| Patent Number: |
5790329 |
| Title: |
Color Changing Device for Illumination Purposes |
| Abstract: |
A color changing device provides a continuously variable light color by
means of the introduction of dichroic color filters into the light path of
an illumination device. In the subtractive color mixing method for mixing
of colors in an illumination apparatus according to the invention dichroic
filters are provided parallel to each other and transverse to the beam
path of the illumination apparatus, wherein the filters can be introduced
into the beam path continuously and independently, so that a continuous
mixing is achieved. At least four filters are used and wherein in view of
the wavelength a broadband high-pass and a broadband low-pass, and two
broadband band-stops are used, wherein the transmission regions of the two
band-stops partly overlap so that with the filter combinations dominant
colors with a high saturation can be generated.
|
| Country of Issue: |
US |
| First Named Inventor: |
Klaus, Oliver |
| Assignee: |
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| Continuation or Divisional of: |
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| International Classification: |
G02B 5/22 |
| US Classification: |
359/887 |
| Issue Date: |
08-04-1998 |
| Filing Date: |
09-27-1995 |
| Application : |
534739 |
| Notes: |
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| Link to Patent at freepatentsonline.com: |
5790329 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
5790329 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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