Abstract: A sensor apparatus for detecting the wetness of window, with a radiation emitter and a radiation receiver, with an optical guide element which can be coupled to the inner side of the window, the radiation inlet side and the radiation outlet side of the guide element are each embodied as a lens arrangement, and a lens arrangement is embodied by lens contours arranged side by side. The lens arrangement on the radiation inlet side has at least two lens contours. The inlet surfaces of the lens contours on the radiation inlet side, through which the radiation is able to enter the guide element, are inclined towards each other. The lens arrangement on the radiation outlet side has at least two lens contours. The outlet surfaces of the lens contours on the radiation outlet side, through which the radiation can exit the guide element, are inclined towards each other.

Abstract: In a sensor device for determining ambient conditions of a vehicle, in particular a motor vehicle, comprising at least one transmitter for emitting electromagnetic radiation, in particular infrared radiation, comprising at least three receivers for receiving electromagnetic radiation, in particular infrared radiation, wherein at least one transmitter is assigned to at least one receiver for determining precipitation on at least one glass surface, in particular the windscreen of the motor vehicle, and wherein at least three receivers are aligned for receiving electromagnetic radiation from different angular regions, it is provided as essential to the invention that the spatial receiving regions of at least one first and at least one second receiver are aligned substantially horizontally, that the spatial receiving region of at least one third receiver is aligned substantially upwards.

Abstract: With a sensor device for recording moisture on a window pane with a transmitter and a receiver and an optical unit arranged between the transmitter and the receiver, wherein the optical unit includes an optical input unit facing the transmitter, an optical output unit facing the receiver and a coupling-in and coupling-out region on the side of the window pane, the coupling-in and coupling-out region is optically separated from the optical input unit and the optical output unit such that the electromagnetic waves emitted by the transmitter are refracted. A particularly compact constructional design is achieved thereby.

Abstract: In a method for measuring fine particulates in the vicinity of a motor vehicle with an optical receiving device, at least one LED (2, 3) arranged inside the motor vehicle lights up an outside air region. The optical receiving device is designed to capture the area under examination in a spatially localized manner and takes an intensity measurement in an area that is lit by the LED. The intensities measured are analyzed for diffraction patterns that depend on the size of the fine particulates. Additionally, a portion of the light that is coupled into the windshield is also analyzed for the presence of water on the windshield.

Abstract: In a sensor device for determining ambient conditions of a vehicle, in particular a motor vehicle, comprising at least one transmitter for emitting electromagnetic radiation, in particular infrared radiation, comprising at least three receivers for receiving electromagnetic radiation, in particular infrared radiation, wherein at least one transmitter is assigned to at least one receiver for determining precipitation on at least one glass surface, in particular the windscreen of the motor vehicle, and wherein at least three receivers are aligned for receiving electromagnetic radiation from different angular regions, it is provided as essential to the invention that the spatial receiving regions of at least one first and at least one second receiver are aligned substantially horizontally, that the spatial receiving region of at least one third receiver is aligned substantially upwards.

Abstract: With a sensor device for recording moisture on a window pane with a transmitter and a receiver and an optical unit arranged between the transmitter and the receiver, wherein the optical unit includes an optical input unit facing the transmitter, an optical output unit facing the receiver and a coupling-in and coupling-out region on the side of the window pane, the coupling-in and coupling-out region is optically separated from the optical input unit and the optical output unit such that the electromagnetic waves emitted by the transmitter are refracted. A particularly compact constructional design is achieved thereby.

Abstract: In a method for measuring fine particulates in the vicinity of a motor vehicle with an optical receiving device, at least one LED (2, 3) arranged inside the motor vehicle lights up an outside air region. The optical receiving device is designed to capture the area under examination in a spatially localised manner and takes an intensity measurement in an area that is lit by the LED. The intensities measured are analysed for diffraction patterns that depend on the size of the fine particulates. Additionally, a portion of the light that is coupled into the windshield is also analysed for the presence of water on the windshield.

Abstract: In a sensor apparatus, in particular a sensor apparatus for detecting ambient conditions of a motor vehicle, wherein the sensor apparatus comprises at least one screen which predefines the detection angle of the sensor apparatus and a detector and wherein an optical component is disposed between the screen and the detector, a greater detection angle is to be achieved. This is achieved whereby the optical component has at least one first and one second concavely curved region, the first inner region is disposed adjacent to the optic axis, where the second region surrounds the first region and that the first region has a stronger concave curvature than the second region.