Industry Patents
Patent: 9341934
LED Light Projector with Fresnel or Planar-Convex Lens, in Particular for Cinema Illumination
(Click image for PDF of full patent)
| Patent Number: |
9341934 |
| Title: |
LED Light Projector with Fresnel or Planar-Convex Lens, in Particular for Cinema Illumination |
| Abstract: |
An optical system for LED light projectors utilizing a Fresnel or
planar-convex lens that permits a considerable energy saving and an
elevated quality of the illumination either in FLOOD or SPOT mode is
described. The optical system has a mirror having a particular
three-dimensional surface constructed by rotating a parabola and taking
sectors so as to obtain a surface that is more closed than a pure
parabola. A reflecting optical system for projectors utilizing a Fresnel
or planar-convex lens is also described.
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| Country of Issue: |
US |
| First Named Inventor: |
De Sisti, De Sisti |
| Assignee: |
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| Continuation or Divisional of: |
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| International Classification: |
G03B 21/28 |
| US Classification: |
G03B 21/28 |
| Issue Date: |
05-17-2016 |
| Filing Date: |
08-09-2012 |
| Application : |
14/237554 |
| Notes: |
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| Link to Patent at freepatentsonline.com: |
9341934 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
9341934 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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