Global Patent Index - EP 0953130 A4

EP 0953130 A4 2000-01-05 - LUMINAIRE DEVICE

Title (en)

LUMINAIRE DEVICE

Title (de)

BELEUCHTUNGSVORRICHTUNG

Title (fr)

DISPOSITIF D'ECLAIRAGE

Publication

EP 0953130 A4 (EN)

Application

EP 98903472 A

Priority

  • US 9800632 W
  • US 78321297 A

Abstract (en)

[origin: WO9833006A2] An optical device for collecting light and selectively outputting or concentrating the light. A layer has an optical index of refraction n1, and top, bottom and side surfaces defining an angle of inclination phi . A back surface spans the top, bottom and side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient. Additional layers, such as a light polarization layer, a polarization converting layer and a post LCD diffuser layer can be used to make preferential use of polarized light of diffuse light having passed through the LCD layer to enhance viewing of the output light.

IPC 1-7

F21V 8/00

IPC 8 full level

G02B 6/00 (2006.01); F21V 8/00 (2006.01); G02B 27/28 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01); G09F 9/00 (2006.01); G09F 19/12 (2006.01)

CPC

G02B 6/0016 (2013.01); G02B 6/0038 (2013.01); G02B 6/0053 (2013.01); G02B 6/0056 (2013.01); G02B 6/0031 (2013.01); G02F 1/13362 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB NL

DOCDB simple family

WO 9833006 A2 19980730; WO 9833006 A3 19981001; AU 6023698 A 19980818; CA 2280085 A1 19980730; CA 2280085 C 20060606; EP 0953130 A2 19991103; EP 0953130 A4 20000105; JP 2001508590 A 20010626; JP 2008270222 A 20081106; JP 4163259 B2 20081008; JP 4642873 B2 20110302; KR 100573634 B1 20060426; KR 20000070114 A 20001125