Projection module of an automobile headlight
View Patent ↗The invention relates to a projection module of an automobile headlight. The module includes several semiconductor light sources to broadcast optical irradiation of a primary optics assembly to bundle the emitted irradiation, and a secondary optics assembly that projects the bundled irradiation to create the desired light distribution in front of the vehicle. In order to reduce the weight and dimensions of the projection module, it is proposed that the secondary optics assembly is formed as a multi-part complex lens that includes several lens segments. Each of these lens segments is assigned to at least one irradiation bundle of irradiation bundled from the primary optics assembly, and projects this assembly as partial distribution in front of the vehicle, whereby the overall distribution of the projection module results from overlapping the partial distributions.
1. Projection module of a headlight on a vehicle, said module comprising:
multiple semiconductor light sources emitting optical irradiation within the visible range of the spectrum;
a primary optics assembly bundling at least a portion of the emitted optical irradiation;
a secondary optics assembly that projects the bundled optical irradiation to create a light distribution in front of the vehicle; and
at least one baffle positioned in the beam path of the bundled irradiation with an upper edge;
characterized in that the secondary optics assembly is formed as a complex lens that possesses a plurality of lens segments each of the lens segments positioned apart from each other and assigned to at least one irradiation bundle assigned to at least one irradiation bundle of the irradiation bundled by the primary optics assembly and projects the irradiation from the secondary optics assembly in front of the vehicle to create a plurality of partial light distributions, and overall light distribution of the projection module results from overlapping of the partial light distributions and the secondary optics assembly projects the irradiation passing by the baffle in front of the vehicle, and projects the upper edge as the light-dark line onto the roadway in front of the vehicle.
2. Projection module as in claim 1 , characterized in that the primary optics assembly includes at least one front optical system positioned in the beam path of the irradiation emitted from the light sources, and which bundles the emitted irradiation by means of total reflection.
3. Projection module as in claim 2 , characterized in that its own front optical system is assigned to each of the light sources.
4. Projection module as in claim 3 , characterized in that the lens segments of the secondary optics assembly are various segments of the same projection lens.
5. Projection module as in claim 3 , characterized in that the lens segments of the secondary optics assembly are various segments of differently-shaped projection lenses.
6. Projection module as in claim 2 , characterized in that the lens segments of the secondary optics assembly are various segments of the same projection lens.
7. Projection module as in claim 2 , characterized in that the lens segments of the secondary optics assembly are various segments of differently-shaped projection lenses.
8. Projection module as in claim 1 , characterized in that the lens segments of the secondary optics assembly are various segments of the same projection lens.
9. Projection module as in claim 8 , characterized in that the lens segments of the secondary optics assembly possess identical focal lengths.
10. Projection module as in claim 9 , characterized in that the thickness of at least one of the lens segments of the secondary optics assembly positioned near or in the vicinity of the optical axis of the projection module is thinner in comparison to the lens segments positioned farther away from the optical axis.
11. Projection module as in claim 9 , characterized in that the lens segments of the secondary optics assembly are positioned in an array facing opposite the exit direction of the irradiation from the projection module.
12. Projection module as in claim 8 , characterized in that the lens segments of the secondary optics assembly possess different focal lengths.
13. Projection module as in claim 12 , characterized in that the focal lengths are selected such that that the lens segments positioned according to their focal lengths, as viewed from above, follow a contour of the vehicle headlight and/or contour of a cover plate of the headlight.
14. Projection module as in claim 1 , characterized in that the lens segments of the secondary optics assembly are various segments of differently-shaped projection lenses.
15. Projection module as in claim 14 , characterized in that the lens segments of the secondary optics assembly possess the same focal lengths.
16. Projection module as in claim 14 , characterized in that the lens segments of the secondary optics assembly possess different focal lengths.
17. Projection module as in claim 1 , characterized in that the primary optics assembly includes at least one front optical system positioned in the beam path of the irradiation emitted from the light sources, and bundles the emitted irradiation by means of total reflection.