Invention Grant
- Patent Title: Illumination device comprising a collimator
- Patent Title (中): 包括准直仪的照明装置
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Application No.: US12993281Application Date: 2009-05-27
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Publication No.: US08475010B2Publication Date: 2013-07-02
- Inventor: Michel Cornelis Josephus Marie Vissenberg , Anthonie Hendrik Bergman , Tim Dekker , Giovanni Cennini
- Applicant: Michel Cornelis Josephus Marie Vissenberg , Anthonie Hendrik Bergman , Tim Dekker , Giovanni Cennini
- Applicant Address: NL Eindhoven
- Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee Address: NL Eindhoven
- Agent Mark L. Beloborodov
- Priority: EP08157267 20080530; EP08163464 20080902; EP08167518 20081024
- International Application: PCT/IB2009/052213 WO 20090527
- International Announcement: WO2009/144668 WO 20091203
- Main IPC: F21V5/00
- IPC: F21V5/00
Abstract:
The invention provides an illumination device (1) comprising a lighting unit (2). The lighting unit (2) comprises a light source (100) and a substantially flat collimator (200), arranged to collimate light source light (111). The collimator (200) has an entrance window (210), an edge window (220), a top collimator surface (201), a bottom collimator surface (202), a first collimating side edge (230) and a second collimating side edge (240). The lighting unit has an optical axis (O). One or more of the top collimator surface (201), the bottom collimator surface (202), the first collimating side edge (230) and the second collimating side edge (240) comprise n*½ grooves (300), wherein n is a positive integer number, and wherein the grooves (300) independently have a longitudinal axis (301) having a groove direction angle (ω) with the optical axis (O) ≧0° and & and
Public/Granted literature
- US20110085332A1 ILLUMINATION DEVICE COMPRISING A COLLIMATOR Public/Granted day:2011-04-14
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