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1. WO2020069916 - OPTICAL ELEMENT FOR LIGHTING DEVICE

Publication Number WO/2020/069916
Publication Date 09.04.2020
International Application No. PCT/EP2019/075675
International Filing Date 24.09.2019
IPC
F21S 41/143 2018.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
10characterised by the light source
14characterised by the type of light source
141Light emitting diodes
143the main emission direction of the LED being parallel to the optical axis of the illuminating device
F21S 41/24 2018.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
20characterised by refractors, transparent cover plates, light guides or filters
24Light guides
F21S 41/20 2018.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
20characterised by refractors, transparent cover plates, light guides or filters
F21S 41/32 2018.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
30characterised by reflectors
32Optical layout thereof
F21S 41/25 2018.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
20characterised by refractors, transparent cover plates, light guides or filters
25Projection lenses
CPC
F21S 41/143
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
10characterised by the light source
14characterised by the type of light source
141Light emitting diodes [LED]
143the main emission direction of the LED being parallel to the optical axis of the illuminating device
F21S 41/151
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
10characterised by the light source
14characterised by the type of light source
141Light emitting diodes [LED]
151arranged in one or more lines
F21S 41/24
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
20characterised by refractors, transparent cover plates, light guides or filters
24Light guides
F21S 41/25
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
20characterised by refractors, transparent cover plates, light guides or filters
25Projection lenses
F21S 41/285
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
20characterised by refractors, transparent cover plates, light guides or filters
285Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24-F21S41/28
F21S 41/322
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
30characterised by reflectors
32Optical layout thereof
322the reflector using total internal reflection
Applicants
  • LUMILEDS HOLDING B.V. [NL]/[NL]
Inventors
  • ZOZGORNIK, Steffen
Agents
  • RUEBER, Bernhard
Priority Data
18198285.102.10.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL ELEMENT FOR LIGHTING DEVICE
(FR) ÉLÉMENT OPTIQUE POUR DISPOSITIF D'ÉCLAIRAGE
Abstract
(EN)
The disclosure relates to an optical element (2) for a lighting device (26), the optical element (2) comprising a body (4) capable of conducting light, wherein the body (4) comprises: a light incoupling surface (6); a light outcoupling surface (8); and side faces (10, 12) situated opposite to each other and extending from the light incoupling surface (6) to the light outcoupling surface (8); wherein at least one of the side faces (10) has an aspherical shape at least in sections. The at least one side face (10) having the aspherical shape is capable of focussing light originating from a first point (16) on the light incoupling surface (6) to a second point (18) on the light outcoupling surface (8) by internal reflection at least in the sections. The optical element (2) may serve in the lighting device (26) as a precollimator with configurable intensity distribution of the precollimated light. The shape of the optical element (2) may be easily determined for various dimensions of the optical element (2). The disclosure further relates to a lighting device (26) and a method for production of a lighting device (26).
(FR)
L'invention concerne un élément optique (2) destiné à un dispositif d'éclairage (26), l'élément optique (2) comprenant un corps (4) susceptible de conduire de la lumière, le corps (4) comprenant : une surface de couplage d'entrée de lumière (6) ; une surface de couplage de sortie de lumière (8) ; et des faces latérales (10, 12), situées face à face et s'étendant de la surface de couplage d'entrée de lumière (6) à la surface de de couplage de sortie de lumière (8) ; au moins l'une des faces latérales (10) ayant une forme asphérique au moins dans des sections. L'au moins une face latérale (10) ayant la forme asphérique est susceptible de focaliser la lumière, d'un premier point (16) situé sur la surface de couplage d'entrée de lumière (6) à un second point (18) situé sur la surface de couplage de sortie de lumière (8) par réflexion interne au moins dans les sections. L'élément optique (2) peut servir de précollimateur à distribution configurable d'intensités de la lumière précollimatée dans le dispositif d'éclairage (26). La forme de l'élément optique (2) peut être facilement déterminée pour diverses dimensions de l'élément optique (2). L'invention concerne en outre un dispositif d'éclairage (26) et un procédé de production d'un dispositif d'éclairage (26).
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