US 11,913,618 B2
Illumination device for a motor vehicle headlamp
Matthias Kemetmüller, Vienna (AT)
Assigned to ZKW Group GmbH, Wieselburg (AT)
Appl. No. 18/034,978
Filed by ZKW Group GmbH, Wieselburg (AT)
PCT Filed Oct. 18, 2021, PCT No. PCT/EP2021/078769
§ 371(c)(1), (2) Date May 2, 2023,
PCT Pub. No. WO2022/100964, PCT Pub. Date May 19, 2022.
Claims priority of application No. 20207143 (EP), filed on Nov. 12, 2020.
Prior Publication US 2024/0019093 A1, Jan. 18, 2024
Int. Cl. F21S 41/24 (2018.01); F21S 41/20 (2018.01)
CPC F21S 41/24 (2018.01) [F21S 41/285 (2018.01)] 17 Claims
OG exemplary drawing
 
1. An illumination device (1) for a motor vehicle headlight, comprising:
a first light guide (2), which is configured to guide light from a light source and to emit it along a first direction (x);
a second light guide (3), which is configured to guide light from a light source and to emit it along a second direction (y); and
an optical device (4), which is configured to emit light from the first (2) and second light guide (3) as an optical light function into a traffic area, wherein the optical device (4) has a first light input surface (5a), a first light output surface (5b) associated with the first light input surface (5a), a second light input surface (6a) and a second light output surface (6b) associated with the second light input surface (6a),
wherein the first light guide (2) is arranged with respect to the first light input surface (5a) in such a way that the light from the first light guide (2) can be injected into the optical device (4) via the first light input surface (5a), wherein the light injected by the first light guide (2) passes through the optical device (4) and can exit via the first light output surface (5b), wherein the second light guide (3) is arranged with respect to the second light input surface (6a) in such a way that the light from the second light guide (3) can be injected into the optical device (4) via the second light input surface (6a), wherein the light injected by the second light guide (3) passes through the optical device (4) and can exit via the second light output surface (6b),
wherein the first light output surface (5b) is formed by a plurality of first surface elements 7 and the second light output surface (6b) is formed by a plurality of second surface elements (8), and
wherein the first (7) and second surface elements (8) are arranged alternately with respect to one another in such a way that they form a substantially step-like structure, wherein a first surface element (7) with a subsequent second surface element (8) respectively form a step, wherein the first surface element (7) forms an angle of 45° to 135° with the subsequent second surface element (8).