Invention Grant
- Patent Title: LED lighting apparatus emitting controlled spatial illumination light
- Patent Title (中): LED照明装置发射受控空间照明灯
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Application No.: US13395355Application Date: 2010-03-16
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Publication No.: US09328899B2Publication Date: 2016-05-03
- Inventor: Shoei Kataoka , Teruyuki Kataoka
- Applicant: Shoei Kataoka , Teruyuki Kataoka
- Agency: Hamre, Schumann, Mueller & Larson, P.C.
- Priority: JP2009-233852 20090911
- International Application: PCT/JP2010/054373 WO 20100316
- International Announcement: WO2011/030578 WO 20110317
- Main IPC: G02F1/13
- IPC: G02F1/13 ; F21V14/00 ; F21K99/00 ; F21S8/04 ; G02F1/1335 ; G02F1/1333 ; G02F1/1334 ; H05B37/02 ; F21V3/00 ; F21W131/40 ; F21Y101/02 ; F21Y111/00
Abstract:
Light from an LED (light-emitting diodes) has strong directional characteristics; therefore, lighting over large area, as well as control of the quality or the distribution of lighting was impossible. Placing a liquid-crystal panel in front of an LED (light-emitting diodes) enables to control light from the LED and the quality or the distribution of lighting.
Public/Granted literature
- US20120169953A1 LED LIGHTING APPARATUS Public/Granted day:2012-07-05
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