Industry Patents

Patent: 8770787

LED-Based Luminaire with Adjustable Beam Shape

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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.  

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:  
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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