Global Patent Index - EP 1159728 A1

EP 1159728 A1 2001-12-05 - DISPLAY SYSTEMS INCORPORATING LIGHT-EMITTING DIODE LIGHT SOURCE

Title (en)

DISPLAY SYSTEMS INCORPORATING LIGHT-EMITTING DIODE LIGHT SOURCE

Title (de)

ANZEIGESYSTEME MIT LEUCHTDIODEN-LICHTQUELLE

Title (fr)

SYSTEMES D'AFFICHAGE INCORPORANT UNE SOURCE DE LUMIERE DE DIODE ELECTROLUMINESCENTE

Publication

EP 1159728 A1 (EN)

Application

EP 00979618 A

Priority

  • EP 0011651 W
  • US 45669099 A

Abstract (en)

[origin: WO0143113A1] A display system has a light source which is composed of at least two LED sources having slightly different peak wavelengths of light emission. The separate LED sources are combined into a single beam having increased lumen output with little or no increase in etendue. Such combined sources of different colors (eg., red, green and blue) are useful as the light engine in display systems having a limited etendue, arising for example from the use of small light modulator panels.

IPC 1-7 (main, further and additional classification)

G09G 3/34

IPC 8 full level (invention and additional information)

G02B 27/14 (2006.01); G02B 27/18 (2006.01); G02F 1/13357 (2006.01); G09G 3/34 (2006.01); H01L 33/00 (2006.01); H04N 9/31 (2006.01); H04N 9/73 (2006.01)

CPC (invention and additional information)

G09G 3/3413 (2013.01); G02B 27/145 (2013.01); G02F 1/1336 (2013.01); H04N 9/3114 (2013.01); H04N 9/315 (2013.01); H04N 9/73 (2013.01); G02F 2001/133622 (2013.01); G09G 2310/0235 (2013.01)

Citation (search report)

See references of WO 0143113A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 0143113 A1 20010614; EP 1159728 A1 20011205; JP 2003516558 A 20030513

INPADOC legal status


2009-07-22 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20090129

2008-01-09 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20071217

2004-05-12 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR GB

2002-02-13 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20011214

2001-12-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR