EP 3347644 A1 20180718 - ILLUMINATION DEVICE HAVING A FLAT LIGHT GUIDE PLATE
Title (en)
ILLUMINATION DEVICE HAVING A FLAT LIGHT GUIDE PLATE
Title (de)
BELEUCHTUNGSVORRICHTUNG MIT EINER EBENEN LICHTLEITERPLATTE
Title (fr)
DISPOSITIF D'ÉCLAIRAGE AVEC UNE PLAQUE GUIDE D'ONDE PLANE
Publication
Application
Priority
- DE 102015011904 A 20150911
- EP 2016001519 W 20160908
Abstract (en)
[origin: WO2017041894A1] The invention relates to an illumination device (1) comprising a flat light guide plate (2) into which at least one electric lamp element, preferably formed as a light-emitting diode (3), couples light on at least one side surface (4), and the limiting side surfaces (5, 6; 11) of which are provided with a reflective layer, and comprising a limiting structure (8) formed on the light guide plate (2) and provided for light emission, and neighbouring a receiving means (7) in the light guide plate (2) for integrating a display or actuation element, wherein the light guide plate (2) has a light guide plate shaped section which forms a light-coupling part (9) with a light-coupling section neighbouring the light-coupling side surface (4), and which has at least one inner optical imperfection (10) that widens the coupleable light and scatters same by forming a light curtain overhanging the limiting structure (8), which can be reflectively decoupled by the limiting side surfaces (5, 6; 11) on the limiting structure (8) of the light guide plate (2) by forming an illumination surface, wherein the limiting structure (8) is arranged as a limiting contour around the receiving means (7) for the display or actuation element, and a rear limiting side surface (11) arranged facing away from the light-coupling part (9) follows the limiting contour in a shape-adapted manner.
IPC 8 full level
F21V 8/00 (2006.01)
CPC (source: EP)
G02B 6/0033 (2013.01); G02B 6/0095 (2013.01)
Citation (search report)
See references of WO 2017041894A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2017041894 A1 20170316; DE 102015011904 A1 20170316; EP 3347644 A1 20180718
DOCDB simple family (application)
EP 2016001519 W 20160908; DE 102015011904 A 20150911; EP 16762974 A 20160908