Industry Patents
Patent: 8770787
LED-Based Luminaire with Adjustable Beam Shape
(Click image for PDF of full patent)

Patent Number: |
8770787 |
Title: |
LED-Based Luminaire with Adjustable Beam Shape |
Abstract: |
Proposed is a luminaire (1), comprising light sources (10) and optical
elements (20). The light sources (10) are arranged in a first (11) and a
second array (12), while the optical elements (20) are arranged in a
first (21) and a second section (22). The first `light sources' array
(11) and the first Optical element` section (21) form a first group (31),
and the second array (12) and the section (22) form a second group (32).
The luminaire (1) is characterized in that the optical elements (20) of
each group are arranged to have different beam shaping characteristics,
and the arrays (11,12) are arranged to be individually addressable. This
is especially advantageous in illumination applications where the control
of the beam shape is required or desired. Advantageously, the invention
provides a luminaire (1) capable of adjusting the beam shape without
using an adjustable optical system. Moreover, the control bandwidth of
the light sources limits the speed with which the beam shape can be
adjusted.
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Country of Issue: |
US |
First Named Inventor: |
Vissenberg, Ijzerman |
Assignee: |
Philips |
Continuation or Divisional of: |
|
International Classification: |
F21V 9/00 |
US Classification: |
362/231 |
Issue Date: |
07-08-2014 |
Filing Date: |
06-09-2008 |
Application : |
12/663522 |
Notes: |
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Link to Patent at freepatentsonline.com: |
8770787 at Freepatentsonline |
Link to World Patent Family1: |
World Patent Family at European Patent Office |
Link to Google Patents1: |
8770787 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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