EP 3870894 A1 20210901 - LIGHT UNIT FOR A MOTOR VEHICLE HEADLAMP
Title (en)
LIGHT UNIT FOR A MOTOR VEHICLE HEADLAMP
Title (de)
LEUCHTEINHEIT FÜR EINEN KFZ-SCHEINWERFER
Title (fr)
UNITÉ D'ÉCLAIRAGE POUR PROJECTEUR DE VÉHICULE AUTOMOBILE
Publication
Application
Priority
- EP 18202516 A 20181025
- EP 2019076020 W 20190926
Abstract (en)
[origin: WO2020083601A1] The invention relates to a light unit (100) for a motor vehicle lighting system, comprising: a dipped beam light module (101), a full beam module (102), an optical imaging system (103, 503) connected downstream of the dipped beam light module (101) and the full beam light module (102) and having an optical axis (104, 204, 404, 504) and a focal surface (116) oriented normally with respect to the optical axis (104, 204, 404, 504), and a diaphragm (105, 405) which has a diaphragm edge (106, 206, 306) and extends substantially as far as the focal surface (116) of the optical imaging system (103, 503) in order to generate the horizontal bright/dark boundary in a light image generated by the light unit (100). The diaphragm (105, 405) has an opaque diaphragm area (107, 407) and on the diaphragm edge (106, 206, 306) has in the region of the focal surface (116) a transparent diaphragm area (108, 408) having a geometric structure (109, 409) made of a transparent material, the geometric structure (109, 409) comprising at least one prism body (110, 210, 310, 410, 510) having a triangular cross-sectional area which is elongated and the longitudinal extent runs transversely to the optical axis (104, 204, 404), the at least one prism body (110, 210, 310, 410, 510) has a first, a second and a third prism surface, the second prism surface (112, 212, 312, 512) encloses an internal angle α1 ≥ θ with the first prism surface (111, 211, 311), and the third prism surface (113, 213, 313, 513) encloses an internal angle α2 ≥ θ with the first prism surface (111, 211, 311), θ being the limiting angle of the total reflection of the transparent material, the internal angles α1 and α2 being the same or different, and with the proviso that the internal angle α1 or the internal angle α2 is not 45°.
IPC 8 full level
F21S 41/147 (2018.01); F21S 41/20 (2018.01); F21S 41/25 (2018.01); F21S 41/255 (2018.01); F21S 41/26 (2018.01); F21S 41/40 (2018.01); F21S 41/43 (2018.01); F21S 41/663 (2018.01)
CPC (source: EP KR US)
F21S 41/147 (2017.12 - EP KR US); F21S 41/25 (2017.12 - EP KR); F21S 41/26 (2017.12 - EP KR US); F21S 41/285 (2017.12 - EP KR US); F21S 41/43 (2017.12 - EP KR US); F21S 41/663 (2017.12 - EP KR US); F21W 2102/16 (2017.12 - EP KR US); F21W 2102/18 (2017.12 - EP KR US)
Citation (search report)
See references of WO 2020083601A1
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)
EP 3643962 A1 20200429; CN 112912667 A 20210604; CN 112912667 B 20230103; EP 3870894 A1 20210901; EP 3870894 B1 20230329; JP 2022512814 A 20220207; JP 7231726 B2 20230301; KR 102530959 B1 20230510; KR 20210060575 A 20210526; US 11293612 B2 20220405; US 2021388960 A1 20211216; WO 2020083601 A1 20200430
DOCDB simple family (application)
EP 18202516 A 20181025; CN 201980070163 A 20190926; EP 19773113 A 20190926; EP 2019076020 W 20190926; JP 2021522503 A 20190926; KR 20217011499 A 20190926; US 201917286592 A 20190926