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Publication numberWO2005026611 A3
Publication typeApplication
Application numberPCT/GB2004/003971
Publication date22 Sep 2005
Filing date17 Sep 2004
Priority date18 Sep 2003
Also published asWO2005026611A2
Publication numberPCT/2004/3971, PCT/GB/2004/003971, PCT/GB/2004/03971, PCT/GB/4/003971, PCT/GB/4/03971, PCT/GB2004/003971, PCT/GB2004/03971, PCT/GB2004003971, PCT/GB200403971, PCT/GB4/003971, PCT/GB4/03971, PCT/GB4003971, PCT/GB403971, WO 2005/026611 A3, WO 2005026611 A3, WO 2005026611A3, WO-A3-2005026611, WO2005/026611A3, WO2005026611 A3, WO2005026611A3
InventorsOwen Michael Gerard O'neill, Howell John Griffiths, Christopher John Ferrari, Michael John Hanney
ApplicantAmbisol Signage And Lighting L, Owen Michael Gerard O'neill, Howell John Griffiths, Christopher John Ferrari, Michael John Hanney
Export CitationBiBTeX, EndNote, RefMan
External Links: Patentscope, Espacenet
Improvements in and relating to backlit displays
WO 2005026611 A3
Abstract
A light guide (30) for use with a backlit display (100), and a method of manufacturing the same is disclosed. The light guide (30) has an array of light control features (32) mechanically machined into its surface during manufacture to scatter light within the light guide (30) so that it passes out of the light guide (30) to illuminate the backlit display (100). Light is introduced to the light guide (30) from light boxes (50) containing light sources. Each light source is joined to a coupling element (52) to increase efficiency of light entry into the light guide (30) and to increase the amount of light directed toward the light control features (32).
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
WO2002075375A1 *13 Mar 200226 Sep 2002Toray Industries, Inc.Optical functional sheet
EP1369711A1 *13 Mar 200210 Dec 2003Toray Industries, Inc.Optical functional sheet
US4890201 *22 Dec 198826 Dec 1989Generaldirektoratet For Danske Statsbaner, Dsb, And Jens Moller-JensenLight transmitting plate member
US20030147259 *2 Feb 20027 Aug 2003Opti-Flux Technologies Inc.Light emitting flat panel with embedded light guides yielding controlled light extraction for general lighting luminaire
Classifications
International ClassificationF21V8/00, G02B6/00
Cooperative ClassificationG02B6/003, G02B6/0068, G02B6/0043
European ClassificationG02B6/00L6I8L
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