Optical sensor device for detecting ambient light
First Claim
1. An optical sensor device for detecting ambient light, which is adapted to be coupled to a pane, in particular to a windshield of a motor vehicle, the device having a sensor unit which includes at least one light receiver and a lens plate, the sensor unit coupling an ambient light beam, which has entered the pane, out of the pane and directing the light beam onto the light receiver, the lens plate including a first Fresnel prism structure on a surface which faces the pane, the lens plate having a plurality of individual structures, the individual structures of the first Fresnel prism structure being designed such that they deflect the light beam at different angles.
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Accused Products
Abstract
An optical sensor device for detecting ambient light is adapted to be coupled to a pane (10), in particular to a windshield of a motor vehicle. The optical sensor device has a sensor unit which includes at least one light receiver (26) and a lens plate (12). By means of the sensor unit, an ambient light beam having entered the pane (10) is coupled out of the pane (10) and directed onto the light receiver (26). On a surface (12b) which faces the pane (10), the lens plate (12) includes a first Fresnel prism structure (22) having a plurality of individual structures (24). The individual structures (24) of the first Fresnel prism structure (22) are designed such that they deflect the light beam at different angles.
23 Citations
15 Claims
- 1. An optical sensor device for detecting ambient light, which is adapted to be coupled to a pane, in particular to a windshield of a motor vehicle, the device having a sensor unit which includes at least one light receiver and a lens plate, the sensor unit coupling an ambient light beam, which has entered the pane, out of the pane and directing the light beam onto the light receiver, the lens plate including a first Fresnel prism structure on a surface which faces the pane, the lens plate having a plurality of individual structures, the individual structures of the first Fresnel prism structure being designed such that they deflect the light beam at different angles.
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15. A rain/light sensor, comprising an optical sensor device for detecting ambient light, which is adapted to be coupled to a pane, in particular to a windshield of a motor vehicle, the device having a sensor unit which includes at least one light receiver and a lens plate, the sensor unit coupling an ambient light beam, which has entered the pane, out of the pane and directing the light beam onto the light receiver, the lens plate including a first Fresnel prism structure on a surface which faces the pane, the lens plate having a plurality of individual structures, the individual structures of the first Fresnel prism structure being designed such that they deflect the light beam at different angles, the rain/light sensor further comprising an optical rain sensor device, the sensor device and the rain sensor device having a common lens plate.
Specification