Patent ID: 11913620
Assignee: ZKW GROUP GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An illumination device (1) for a motor vehicle headlight or a motor vehicle, wherein the illumination device (1) is configured to perform at least two different light functions, the illumination device comprising:
an illuminant (2); and
an optical device (3) associated with the illuminant (2),
wherein the illuminant (2) is configured to generate light and emit the generated light onto the optical device (3),
wherein the optical device (3) has an optically active region (4) with an optical axis (x), wherein the optically active region (4) has a light entry surface (4a) and a light emitting surface (4b) opposite the light entry surface (4a), wherein light emitted by the illuminant (2) enters the optically active region (4) of the optical device (3) via the light entry surface (4a), passes through the optically active region (4) of the optical device (3) and exits the optically active region (4) of the optical device (3) via the light emitting surface (4b), wherein the optical device (3) has an adjustment means (5), which is configured to adjust operating states of the optical device (3), wherein at least two different operating states of the optical device (3) are provided, wherein in a first operating state (B1), which is a transmission state, the optically active region (4) of the optical device (2) is substantially transparent such that the light of the illuminant (2) incident on the optically active region (4) of the optical device passes through the optically active region (4) substantially free of interaction with the optically active region (4) and forms a first light function, and in a second operating state (B2), which is a scattering state, the optically active region (4) of the optical device (3) is configured to scatter such that the light of the illuminant (2) incident on the optically active region (4) of the optical device interacts with the optically active region (4) when passing through the optically active region (4) to form a second light function,
wherein the illuminant (2) comprises a plurality of light sources (2a) spaced apart from one another at a minimum distance, which are arranged in a 15 light source surface (2b), distributed on a light source support (2c) of the illuminant (2), wherein each light source (2a) emits a light beam,
wherein the optically active region (4) between the light entry surface (4a) and the light emitting surface (4b) has a plurality of scattering elements (4c), wherein the adjustment means (5) is configured to adjust a scattering cross section of the scattering elements (4c) depending on the at least two operating states (B1, B2),
wherein the adjustment means (5) is configured to adjust the optical device (3) in such a way that in the first operating state (B1), the scattering cross section of the scattering elements (4c) of the optically active region (4) is set in such a way that a light propagation direction of the rays of light of the light beams remains substantially unchanged when passing through the optically active region (4) such that merely the light beams emanating from the light sources (2a) define the first light function, and in the second operating state (B2), the scattering cross section of the scattering elements (4c) of the optically active region (4) is set in such a way that the light propagation direction of the rays of light of at least one first group of light beams, in particular of all light beams, is changed by scattering the rays of light by the scattering elements (4c), wherein in the second operating state (B2), the scattered light beams emitted by the light sources (2a) and subsequently emanating from the light emitting surface (4a) of the optically active region (4) define the second light function,

wherein the light sources (2a) of the illuminant (2) are formed from at least two light source groups, wherein light sources of a first light source group are arranged in the light source surface (2b) on the light source support (2c) in a first uniform light source grid with a first grid spacing from one another, wherein light sources of a second light source group are arranged in the light source surface (2b) on the light source support (2c) in a second uniform light source grid with a second grid spacing from one another, wherein the first grid spacing is greater than the second grid spacing, and
wherein the optical device (3) is arranged relative to the illuminant (2) in such a way that the light of the first light source group passes through the first optically active partial region and the light of the second light source group passes through the second optically active partial region.