EP 1646895 A1 20060419 - COMPACT EFFICIENT LIGHT COLLECTION OPTICS FOR SCROLLING COLOR ILLUMINATION
Title (en)
COMPACT EFFICIENT LIGHT COLLECTION OPTICS FOR SCROLLING COLOR ILLUMINATION
Title (de)
KOMPAKTES EFFIZIENTES LICHTSAMMLUNGSOPTIK FUR BELEUCHTUNG MIT SICH VERSCHIEBENDEN FARBEN
Title (fr)
ELEMENT OPTIQUE COLLECTEUR DE LUMIERE COMPACT ET EFFICACE POUR SYSTEME D'ECLAIRAGE A DEFILEMENT DE COULEURS
Publication
Application
Priority
- IB 2004001731 W 20040517
- US 47481903 P 20030530
Abstract (en)
[origin: WO2004106996A1] A light source for a scrolling color illumination system includes a lamp (212) producing light, first and second independent reflectors (220, 230) each receiving a portion of the light from the lamp (212), and a light guide (260) receiving two independent images of the light source created by the portions of the light received by the first and second independent reflectors (220, 230). Through such an arrangement, the light guide (260) provides a light beam at an output thereof having an aspect ratio that is twice an aspect ratio of the light beam produced by the lamp (212) while preserving its original etendue. Beneficially, a polarizing element (266) polarizes the unpolarized light beam from the light guide (260) and, in the process, the aspect ratio is further doubled, again without an increase in the etendue.
IPC 1-7
IPC 8 full level
H04N 9/31 (2006.01); F21Y 101/00 (2016.01)
CPC (source: EP KR)
F21V 7/00 (2013.01 - KR); G02B 6/00 (2013.01 - KR); H04N 9/3117 (2013.01 - EP); H04N 9/3167 (2013.01 - EP)
Citation (search report)
See references of WO 2004106996A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004106996 A1 20041209; CN 1798992 A 20060705; EP 1646895 A1 20060419; JP 2007505476 A 20070308; KR 20060015628 A 20060217; TW 200500745 A 20050101
DOCDB simple family (application)
IB 2004001731 W 20040517; CN 200480015042 A 20040517; EP 04733405 A 20040517; JP 2006530695 A 20040517; KR 20057022652 A 20051128; TW 93115144 A 20040527