Invention Application
- Patent Title: Thin and Efficient Light Collimating Device
- Patent Title (中): 薄而高效的光准直装置
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Application No.: US12092990Application Date: 2006-10-27
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Publication No.: US20080252986A1Publication Date: 2008-10-16
- Inventor: Willem Lubertus Ijzerman , Michel Cornelis Josephus Marie Vissenberg , Marcellinus Petrus Carolus Michael Krijn , Hugo Johan Cornelissen
- Applicant: Willem Lubertus Ijzerman , Michel Cornelis Josephus Marie Vissenberg , Marcellinus Petrus Carolus Michael Krijn , Hugo Johan Cornelissen
- Applicant Address: NL EINDHOVEN
- Assignee: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
- Current Assignee: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
- Current Assignee Address: NL EINDHOVEN
- Priority: EP05110683.9 20051114
- International Application: PCT/IB2006/053963 WO 20061027
- Main IPC: G02B27/30
- IPC: G02B27/30 ; F21V8/00
Abstract:
A light collimation device comprising a wave guide plate (100) having a first surface (101), an opposing faceted second surface (102) comprising a plurality of essentially planar parallel portions (103) and a plurality of facets (104) connecting said planar parallel portions (103) and at least one surface (105) for receiving light is provided. Each facet (104) is formed at a non-right angle (β) to said planar parallel portions (103) and the device further comprises a plurality of collimating refractive elements (106), wherein each collimating refractive element (106) corresponds to a separate one of the plurality of facets (104), and is located in the beam path of at least the major part of light being reflected on the corresponding facet (104) and extracted from said wave guide plate (100).
Public/Granted literature
- US07548670B2 Thin and efficient light collimating device Public/Granted day:2009-06-16
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