EP 4139657 A1 20230301 - DEVICE FOR DISTRIBUTING LIGHT BASED ON DIFFRACTION GRATINGS
Title (en)
DEVICE FOR DISTRIBUTING LIGHT BASED ON DIFFRACTION GRATINGS
Title (de)
VORRICHTUNG ZUR LICHTVERTEILUNG MITTELS BEUGUNGSGITTERN
Title (fr)
DISPOSITIF DE RÉPARTITION DE LUMIÈRE BASÉ SUR DES RÉSEAUX DE DIFFRACTION
Publication
Application
Priority
- FR 2005656 A 20200528
- FR 2021050964 W 20210527
Abstract (en)
[origin: WO2021240115A1] Disclosed is a device for distributing light (100) configured such that, during use, it distributes light rays originating from an ancillary light source onto a scene (S) to be illuminated, and which comprises: - a planar waveguide (110), with a core layer (120) arranged between the two cladding layers; and - an extraction assembly, situated in the planar waveguide, and consisting of a plurality of diffraction gratings (151) distributed according to the two dimensions of a plane parallel to the plane of the planar waveguide.
IPC 8 full level
F21V 8/00 (2006.01); G01N 21/00 (2006.01); G01N 21/35 (2006.01); G02B 5/18 (2006.01)
CPC (source: EP US)
G01N 21/35 (2013.01 - US); G02B 6/0036 (2013.01 - US); G02B 6/0038 (2013.01 - EP); G02B 6/0076 (2013.01 - EP); G01N 21/35 (2013.01 - EP); G01N 2201/0635 (2013.01 - US); G01N 2201/0638 (2013.01 - US); G02B 5/18 (2013.01 - EP)
Citation (search report)
See references of WO 2021240115A1
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
FR 3110979 A1 20211203; EP 4139657 A1 20230301; US 2023221245 A1 20230713; WO 2021240115 A1 20211202
DOCDB simple family (application)
FR 2005656 A 20200528; EP 21734407 A 20210527; FR 2021050964 W 20210527; US 202117999890 A 20210527