Industry Patents
Patent: 6282027
Zoomable Beamspreader with Matched Optical Surfaces for Non-Imaging Illumination Applications
(Click image for PDF of full patent)
| Patent Number: |
6282027 |
| Title: |
Zoomable Beamspreader with Matched Optical Surfaces for Non-Imaging Illumination Applications |
| Abstract: |
A zoomable light beam spreader comprising first and second multiple-lens
arrays includes a plurality of plano-convex lenses in correspondence with
a plurality of plano-concave lenses having matched, curved optical
surfaces. In a zero-power state, the two multiple-lens arrays are very
closely spaced so that the matched convex and concave surfaces effectively
cancel each other optically but, as the two arrays are separated coaxially
along the axis of a light beam, beam divergence angle increases as a
function of the distance of separation. A large amount of beam divergence
is obtained when the curved surfaces of the plano-concave lenses of the
second array are positioned beyond the focus points of the plano-convex
lenses of the first array.
|
| Country of Issue: |
US |
| First Named Inventor: |
Hough |
| Assignee: |
Vari-Lite |
| Continuation or Divisional of: |
|
| International Classification: |
G02B 27/10 |
| US Classification: |
359/618 |
| Issue Date: |
08-28-2001 |
| Filing Date: |
03-26-1999 |
| Application : |
09280792 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6282027 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6282027 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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