Invention Grant
- Patent Title: LED-based luminaire with adjustable beam shape
- Patent Title (中): 基于LED灯具可调光束形状
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Application No.: US12663522Application Date: 2008-06-09
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Publication No.: US08770787B2Publication Date: 2014-07-08
- Inventor: Michel Cornelis Josephus Marie Vissenberg , Willem Lubertus Ijzerman
- Applicant: Michel Cornelis Josephus Marie Vissenberg , Willem Lubertus Ijzerman
- Applicant Address: NL Eindhoven
- Assignee: Koninklijke Philips N.V.
- Current Assignee: Koninklijke Philips N.V.
- Current Assignee Address: NL Eindhoven
- Agent Mark L. Beloborodov
- Priority: EP07110256 20070614
- International Application: PCT/IB2008/052255 WO 20080609
- International Announcement: WO2008/152561 WO 20081218
- Main IPC: F21V9/00
- IPC: F21V9/00

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.
Public/Granted literature
- US20100165618A1 LED-BASED LUMINAIRE WITH ADJUSTABLE BEAM SHAPE Public/Granted day:2010-07-01
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