US 12,281,767 B2
Lighting device for a motor vehicle having a collimiation optical system and a secondary optical unit with sequential lens arrays
Bernd Fischer, Altenbeken (DE); and Christian Schmidt, Paderborn (DE)
Assigned to Hella GmbH & Co. KGaA, Lippstadt (DE)
Filed by HELLA GmbH & Co. KGaA, Lippstadt (DE)
Filed on Mar. 6, 2024, as Appl. No. 18/597,476.
Application 18/597,476 is a continuation of application No. PCT/EP2022/073673, filed on Aug. 25, 2022.
Claims priority of application No. 10 2021 122 953.7 (DE), filed on Sep. 6, 2021.
Prior Publication US 2024/0247775 A1, Jul. 25, 2024
Int. Cl. F21S 41/265 (2018.01); F21S 41/143 (2018.01); F21S 41/153 (2018.01); F21S 41/29 (2018.01); F21V 5/00 (2018.01); F21V 5/04 (2006.01); F21Y 105/16 (2016.01); F21Y 115/10 (2016.01)
CPC F21S 41/265 (2018.01) [F21S 41/143 (2018.01); F21S 41/153 (2018.01); F21S 41/29 (2018.01); F21V 5/007 (2013.01); F21V 5/043 (2013.01); F21Y 2105/16 (2016.08); F21Y 2115/10 (2016.08)] 14 Claims
OG exemplary drawing
 
1. A lighting device for a motor vehicle, the lighting device comprising:
a plurality of light sources from which light is emitted during operation of the lighting device;
a collimation optical system that comprises collimating lenses, each having an entry surface and an exit surface through which the light emitted from the light sources passes; and
a secondary optical unit that comprises arrays of lenses, the light emitted from the collimation optical system passing through the arrays of lenses,
wherein the collimating lenses are arranged in at least two rows, at least two of the collimating lenses being adjacently situated in each of the at least two rows in a first direction and the at least two rows being adjacently situated in a second direction that is substantially perpendicular to the first direction,
wherein each of the light sources is associated with a respective one of the collimating lenses and at least one of the arrays of lenses of the secondary optical unit, such that the light emitted from each of the light sources passes through the associated one of the collimating lenses and the associated at least one of the arrays of lenses in succession,
wherein the arrays of lenses of the secondary optical unit include multiple rows of first arrays of lenses provided on an entry surface of the secondary optical unit and at least one second array of lenses provided on an exit surface of the secondary optical unit,
wherein the at least two rows of the collimating lenses include a first row of collimating lenses and a second row of collimating lenses and the multiple rows of first arrays of lenses provided on the entry surface of the secondary optical unit include a first row of the first arrays of lenses and a second row of the first arrays of lenses,
wherein the first row of collimating lenses are aligned with the first row of the first array of lenses, the second row of collimating lenses are aligned with the second row of the first array of lenses, and the at least one second array of lenses is provided on the exit surface of the secondary optical unit at a position so as to be aligned with the second row of collimating lenses and the second row of the first array of lenses, such that the first row of the first arrays of lenses is only associated with the first row of collimating lenses and the light sources that are associated with the collimating lenses in the first row of collimating lenses, and such that the second row of the first arrays of lenses is associated with the at least one second array of lenses, the second row of collimating lenses and the light sources that are associated with the collimating lenses in the second row of collimating lenses.