Global Patent Index - EP 1259755 A1

EP 1259755 A1 2002-11-27 - ILLUMINATION DEVICE FOR A TRANSMISSIVELY OPERATING FLAT SCREEN

Title (en)

ILLUMINATION DEVICE FOR A TRANSMISSIVELY OPERATING FLAT SCREEN

Title (de)

BELEUCHTUNGSVORRICHTUNG FÜR EINEN TRANSMISSIV BETRIEBENEN FLACHEN BILDSCHIRM

Title (fr)

DISPOSITIF D'ECLAIRAGE DESTINE A UN ECRAN PLAT FONCTIONNANT DE MANIERE TRANSMISSIVE

Publication

EP 1259755 A1 (DE)

Application

EP 01925288 A

Priority

  • DE 0100614 W
  • DE 10006783 A

Abstract (en)

[origin: WO0161239A1] An illumination device (1), for a transmissively operating flat screen is disclosed, comprising a flat light guide (2), extending over the surface of the screen for arrangement on the rear side of the screen. In the mounted state the light guide comprises a microprism, or microprism-like structure on the surface facing the rear surface of the screen and which may have light injected in the region of a side surface (3). According to the invention, the light guide (2) tapers in cross-section, viewed from the side surface (3) into which light may be injected, to the opposing side in the form of a wedge, whereby the prisms (8) of the microprisms or microprism-like structures are unsymmetrical.

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

F21V 8/00

IPC 8 full level (invention and additional information)

G02B 6/00 (2006.01); F21V 8/00 (2006.01); G02F 1/13357 (2006.01); F21Y 103/00 (2006.01)

CPC (invention and additional information)

G02B 6/0038 (2013.01); G02B 6/0048 (2013.01); G02B 6/0053 (2013.01)

Citation (search report)

See references of WO 0161239A1

Designated contracting state (EPC)

DE FR IT

EPO simple patent family

WO 0161239 A1 20010823; DE 10006783 A1 20010906; EP 1259755 A1 20021127; JP 2003523611 A 20030805

INPADOC legal status


2006-05-24 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20051112

2005-08-17 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20050701

2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): DE FR IT

2002-11-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020918

2002-11-27 [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