Abstract: A detection device for detecting contamination of an optical element. The detection device includes a coupling device, including a first coupling element for coupling light of at least one wavelength from a light source into the optical element, and a second coupling element for coupling light out from the optical element, at least one of the coupling elements including a hologram, and having a detector for acquiring the coupled-out light.

Abstract: A LIDAR device for scanning scanning areas. The LIDAR device includes an emitting unit that includes at least one beam source for generating and for emitting beams into the scanning area, and includes a receiving unit that includes at least one detector for receiving beams backscattered and/or reflected from the scanning area, a radiant power of the beams backscattered and/or reflected from the scanning area directed at the at least one detector in the area of the emitting unit and/or in the area of the receiving unit being actively and/or passively dampable for expanding the dynamic range.

Abstract: A method and to a device for activating a SPAD-based LIDAR sensor and a surroundings detection system. The method includes: emitting a predefined transmission pulse pattern into surroundings of the LIDAR sensor, the transmission pulse pattern being made up of a plurality of consecutive light pulses; detecting photons arriving in the LIDAR sensor within a predefined detection time period after the emission of a respective light pulse; generating histograms which represent a frequency of detected photons with respect to respective reception points in time, each histogram referring to a respective detection time period, and to a respective macropixel; ascertaining a histogram evaluation window, based on which those histograms corresponding to the transmission pulse pattern are selected from a chronological sequence of histograms which, during an allocation to a total histogram, meet predefined criteria for the total histogram; and providing the total histogram for generating a 3D point cloud.

Abstract: A filter device for an optical sensor, including a hologram having a defined number of holographic functions, which are developed in such a way that the filter device blocks optical radiation that impinges upon the filter device from a defined first solid angle and optical radiation that impinges upon the filter device from a defined second solid angle is able to pass through the filter device.

Abstract: A LIDAR device for detecting an object in the surroundings, including at least one transmitter for emitting electromagnetic radiation into the surroundings; at least one rotating deflection unit for deflecting the emitted electromagnetic radiation; at least one detection lens system for receiving electromagnetic radiation which has been reflected by the object in the surroundings, and for directing the received electromagnetic radiation at a first detector unit; at least one second detector unit; and at least one diffractive optical element. The at least one diffractive optical element includes at least one first diffraction area and at least one second diffraction area, an at least first diffraction efficiency assigned to the at least first diffraction area being different from an at least second diffraction efficiency assigned to the at least second diffraction area.

Abstract: A LIDAR device is described including a beam source for emitting electromagnetic radiation in an emission path, in which at least one holographic optical element is situated for diffracting the emitted electromagnetic radiation, and a detector for detecting incident electromagnetic radiation in a reception path, an optical bandpass filter being connected upstream from the detector. Depending on a wavelength of the emitted electromagnetic radiation, the holographic optical element effectuates a diffraction by at least one angle of reflection which is matched to the shift of the wavelength of the incident electromagnetic radiation with the aid of the bandpass filter.

Abstract: A LiDAR system including an emitter and a detector, as well as a ray optics that is at least developed to deflect a ray of light emitted by the emitter for scanning an environment in a normal operation. The LiDAR system has a diagnosis system situated in the LiDAR system. In a diagnosis operation, the ray optics is configured to deflect the ray of light from the emitter onto the diagnosis system and to guide the light reflected by the diagnosis system to the detector in order to detect a diagnosis light signal. A control unit of the LiDAR system is developed to detect an error in the ray optics based on a difference between an expected diagnosis light signal and the actually received diagnosis light signal.

Abstract: A compensation device for a biaxial LIDAR system includes two holographic optical elements, which are locatable between a receiving optical system and a detector element, and which are designed to compensate for a parallax effect of the biaxial LIDAR system, incident light being guidable onto the detector element with the aid of the two holographic optical elements.

Abstract: A device for detecting a soiling of a transparent cover of at least one transmitting window and/or one receiving window of an optical sensor. The device includes at least one hologram structure, an image sensor, and a processing unit. The at least one hologram structure is designed to at least partially deflect light beams incident through the transparent cover, or light beams reflected by an inner side of the transparent cover, in the direction of the image sensor. The image sensor is designed to detect at least one image signal as a function of the deflected light beams, and the processing unit is designed to detect a soiling of the transparent cover as a function of the at least one detected image signal. An optical sensor including the device, and a method for detecting a soiling of the transparent cover, are also described.

Abstract: A method for calibrating a LIDAR device. Beams are generated and emitted by a beam source. Beams reflected and/or backscattered by objects in a scanning range of the LIDAR device and beams reflected and/or backscattered by a reflection structure applied on a glass cover of the LIDAR device are received by a detector. A reflection pattern is ascertained based on the beams reflected and/or backscattered by the reflection structure applied on the glass cover and is compared to a reference pattern. At least one corrective measure is taken to calibrate the LIDAR device in the event of a deviation between the ascertained reflection pattern and the reference pattern. A method for ascertaining a fogged glass cover and a LIDAR device are also provided.

Abstract: An optical element for a lidar system. The optical element includes an expanding optical system configured to expand received light beams, and a projection lens configured to receive and parallelize each of the expanded light beams from the expanding optical system. The expanding optical system and/or the projection lens is formed as a holographic optical element.

Abstract: An operating method for a laser projection unit includes providing a data set representing a sequence of images or partial images to be projected and formed from image elements; before the projection, examining the data set with respect to a brightness of the image elements, determining a maximum brightness from the image elements, and determining a relative brightness of the image elements relative to the determined maximum brightness; and projecting the images or partial images of the data stream or part of the data stream by activating laser light sources of an illumination unit according to the relative brightnesses such that the brightness of a laser light source for an image element to be projected having a maximum relative brightness corresponds to a predetermined maximum absolute brightness, or lies in a safety interval below the predetermined maximum absolute brightness.

Abstract: A lidar device is described for scanning a region to be scanned, using at least one beam. The device includes at least one radiation source for generating the at least one beam, as well as a receiving unit for receiving at least one beam reflected by an object and for deflecting the at least one reflected beam onto a detector. The at least one radiation source generates the at least one beam away from an axis of symmetry, and the at least one beam traveling at a distance from the axis of symmetry. A method for scanning a region to be scanned is also described.

Abstract: A lidar system for scanning a scanning range. The lidar system includes a transmitter unit for generating beams and for emitting the generated beams along a scanning range, the transmitter unit having at least one radiation source. The lidar system also includes at least one receiver unit for receiving and evaluating beams reflected or scattered back in the scanning range. The scanning range acted upon by the generated beams is subdivided into at least two sections. At least one first section is scanned using a higher radiant power than a second section of the scanning range. A control unit is also described.

Abstract: A 3-D lidar sensor, in particular, for motor vehicles, includes a laser beam source, an optical receiver and a scanning system for deflecting a laser beam generated by the laser beam source in two scanning directions perpendicular to each other; to increase the functionality, a further detection device for deviations from normal operation being provided in the 3-D lidar sensor. In addition, a corresponding method for operating the 3-D lidar sensor is provided.

Abstract: A device for detecting a soiling of a transparent cover of at least one transmitting window and/or one receiving window of an optical sensor. The device includes at least one hologram structure, an image sensor, and a processing unit. The at least one hologram structure is designed to at least partially deflect light beams incident through the transparent cover, or light beams reflected by an inner side of the transparent cover, in the direction of the image sensor. The image sensor is designed to detect at least one image signal as a function of the deflected light beams, and the processing unit is designed to detect a soiling of the transparent cover as a function of the at least one detected image signal. An optical sensor including the device, and a method for detecting a soiling of the transparent cover, are also described.

Abstract: A detection device for detecting contamination of an optical element. The detection device includes a coupling device, including a first coupling element for coupling light of at least one wavelength from a light source into the optical element, and a second coupling element for coupling light out from the optical element, at least one of the coupling elements including a hologram, and having a detector for acquiring the coupled-out light.

Abstract: An optical assembly, for receiving light waves, includes a receiving optical system for focusing at least one incoming light wave onto a surface of a detector for detecting the at least one light wave, at least one diffractive optical element with a planar extension being situated between the receiving optical system and the detector, and the at least one diffractive optical element including a surface with a surface structure with at least one optical function. Furthermore, a LIDAR device includes an optical assembly of this type.

Abstract: A lidar device for scanning solid angles with at least one beam, having at least one beam source configured so as to be capable of horizontal rotation for producing at least one beam, having at least one beam emitter for forming the at least one produced beam, having a beam collector capable of horizontal rotation for receiving at least one beam reflected by an object and for deflecting the at least one reflected beam onto a detector, the at least one produced beam being capable of being formed in a variable manner.

Abstract: A LIDAR sensor for detecting an object in the surroundings, and to a method for activating a LIDAR sensor, the LIDAR sensor including at least one transmitting unit for emitting electromagnetic radiation, at least one receiving unit for receiving electromagnetic radiation which was reflected by the object, at least one refractive element, which is at least partially pervious to the electromagnetic radiation, and a rotating unit, which includes at least the at least one refractive element, the at least one transmitting unit and the at least one receiving unit. The core of the invention is that the at least one refractive element includes at least one optical lens and a beam splitter for splitting the electromagnetic radiation, two focal planes being present. The at least one transmitting unit and the at least one receiving unit are positioned in at least one focal plane of at least one refractive element.