Abstract: The invention is directed to a system for preventing or minimizing the spread of viruses, and to the prevention or minimization of the spread of viruses in indoor air, including one or more radiation sources (10) in a room which divide the room into smaller segments using UV-C light walls, a sensor system for detecting a movement or a presence of one or more persons (P) in the room, and a controller (16) that is designed to at least partially switch the one or more radiation sources (10) on or off as a function of at least the presence of the person (P).

Abstract: An electronic microscope has an electronic image sensor for generating primary image data sets, wherein the image sensor is configured to generate image signals that correspond to a plurality of different reception spectra, and wherein each primary image data respectively comprises at least one image signal of each of the plurality of reception spectra for a plurality of image zones. A control device of the microscope is configured to control an illumination device to make a cyclically repeating transmission of electromagnetic radiation having a plurality of different illumination spectra and to control the image sensor to generate a respective primary image data set for each of the plurality of different illumination spectra.

Abstract: A spotlight (1) is described for illuminating a film, studio, stage, event, and/or theatre environment. The spotlight comprises: a reflector arrangement (11) having a reflective inner surface (113), which delimits a reflector interior (114); a number of passive light guides (12) having feed points (121), which are arranged outside the reflector interior (114), and having light output points (122), which are arranged inside the reflector interior (114).

Abstract: A camera viewfinder comprises an electronic display apparatus that is configured for the display of images that are recorded by an image sensor of an electronic camera. The camera viewfinder further comprises two mirrors for reflecting the images displayed by the display apparatus, of which at least one mirror is a free-form surface mirror whose reflective surface is formed as a free-form surface that does not have any continuous translation symmetry or rotational symmetry. At least one of the free-form surface mirrors is adjustable to at least partially compensate a vision defect of a user.

Abstract: A camera system includes a camera unit for capturing still or moving images of an object. The camera unit is adjustable in respect of at least one parameter relevant to the capture of the images based on a measurement signal. A measuring unit captures a distance between the object and the camera unit and includes a laser transceiver for emitting a laser signal and receiving a laser signal reflected by the object. An evaluation unit coupled to the laser transceiver provides the measurement signal. The measurement signal indicates the distance between the object and the camera unit. A lens system has at least two spaced apart lenses. The laser signal emitted by the laser transceiver passes through the lens system. At least one of the lenses is arranged in movable fashion such that the distance between the lenses is variably adjustable parallel to the laser signal transmission direction.

Abstract: A camera system includes a camera unit for capturing still or moving images of an object. The camera unit is adjustable in respect of at least one parameter relevant to the capture of the images based on a measurement signal. A measuring unit captures a distance between the object and the camera unit and includes a laser transceiver for emitting a laser signal and receiving a laser signal reflected by the object. An evaluation unit coupled to the laser transceiver provides the measurement signal. The measurement signal indicates the distance between the object and the camera unit. A lens system has at least two spaced apart lenses. The laser signal emitted by the laser transceiver passes through the lens system. At least one of the lenses is arranged in movable fashion such that the distance between the lenses is variably adjustable parallel to the laser signal transmission direction.

Abstract: A camera system includes a camera unit for capturing still or moving images of an object. The camera unit is adjustable in respect of at least one parameter relevant to the capture of the images based on a measurement signal. A measuring unit captures a distance between the object and the camera unit and includes a laser transceiver for emitting a laser signal and receiving a laser signal reflected by the object. An evaluation unit coupled to the laser transceiver provides the measurement signal. The measurement signal indicates the distance between the object and the camera unit. A lens system has at least two spaced apart lenses. The laser signal emitted by the laser transceiver passes through the lens system. At least one of the lenses is arranged in movable fashion such that the distance between the lenses is variably adjustable parallel to the laser signal transmission direction.

Abstract: A spotlight (1) is described for illuminating a film, studio, stage, event, and/or theatre environment. The spotlight comprises: a reflector arrangement (11) having a reflective inner surface (113), which delimits a reflector interior (114); a number of passive light guides (12) having feed points (121), which are arranged outside the reflector interior (114), and having light output points (122), which are arranged inside the reflector interior (114).

Abstract: An electronic microscope has an electronic image sensor for generating primary image data sets, wherein the image sensor is configured to generate image signals that correspond to a plurality of different reception spectra, and wherein each primary image data respectively comprises at least one image signal of each of the plurality of reception spectra for a plurality of image zones. A control device of the microscope is configured to control an illumination device to make a cyclically repeating transmission of electromagnetic radiation having a plurality of different illumination spectra and to control the image sensor to generate a respective primary image data set for each of the plurality of different illumination spectra.

Abstract: The invention relates to a lighting device (11; 31; 41; 51) which is equipped with a plurality of semiconductor light sources (14, 15) of different colors, downstream of which a common diffusor (17) is arranged, wherein the lighting device (11; 31; 41; 51) has at least one light sensor (21) optically coupled to the diffusor (17).

Abstract: A camera viewfinder comprises an electronic display apparatus that is configured for the display of images that are recorded by an image sensor of an electronic camera. The camera viewfinder further comprises two mirrors for reflecting the images displayed by the display apparatus, of which at least one mirror is a free-form surface mirror whose reflective surface is formed as a free-form surface that does not have any continuous translation symmetry or rotational symmetry. At least one of the free-form surface mirrors is adjustable to at least partially compensate a vision defect of a user.

Abstract: A lighting device includes a light source including at least two light-emitting diode chips which emit light of mutually differing colors when in operation, and an optical element in the form of a solid body made from a dielectric material including a radiation entrance face facing towards the light-emitting diode chips, a radiation exit face remote from the light-emitting diode chips, and a circumferential face connecting the radiation entrance face and the radiation exit face to one another, wherein the circumferential face is reflective to the light emitted by the light-emitting diode chips when in operation, and the radiation entrance face and/or the radiation exit face is/are non-planar at least in places, wherein a gap, which is filled with a gas, is arranged between at least one of the light-emitting diode chips of the light source and the radiation entrance face, and the optical element is a sole optical element of the lighting device, which optical element is arranged downstream of all light-emitting

Abstract: A surface light guide includes a radiation exit area running along a main extension plane of the surface light guide and includes a light guiding region, which has scattering locations and a coating arranged on a first main area of the light guiding region, wherein radiation coupled in along the main extension plane impinging on the first main area after scattering at the scattering locations has an excessively increased radiation component and the coating reduces in a targeted manner an exit of the excessively increased radiation component from the radiation exit area.

Abstract: This invention relates to a method of designing an illumination device, wherein a light source unit is modeled with a set of rays. Therein, each ray is assigned a light power and is further characterized by a light volume, which specifies how “spread out” the light is in area and angle. In this way, a selection of rays with respect to their “density” becomes possible, and an optical system can be optimized for a transmission of those rays providing the most light per volume.

Abstract: Device for generating polarized electromagnetic radiation has a diffuser and a polarizer. The diffuser is arranged in a beam path of the electromagnetic radiation. The polarizer is arranged in the beam path of the electromagnetic radiation, to be precise downstream of the diffuser in the direction of propagation of the electromagnetic radiation. The polarizer has a reflective side facing the diffuser, said reflective side being at least partly reflective to the electromagnetic radiation. The polarizer transmits electromagnetic radiation having a predefined polarization and reflects electromagnetic radiation not having the predefined polarization back to the diffuser. The diffuser scatters, in a non-polarization-maintaining manner, at least one portion of the reflected-back electromagnetic radiation not having the predefined polarization.

Abstract: Various embodiments may relate to a lighting arrangement and a method for producing or for operating the same. The lighting arrangement includes a plurality of radiating faces, on which light may be emitted in each case as a beam. Owing to this “direction competence”, the lighting arrangement may not only reproduce a two-dimensional image of an illumination pattern, but it may emit light directionally and thus reproduce a luminance distribution of the illumination pattern.

Abstract: In at least one embodiment of the surface light guide, the surface light guide includes at least one scattering element for scattering light. A decoupling coefficient is caused by the scattering element. The decoupling coefficient is set in a varying fashion along a main light-guiding direction. In a direction perpendicular to the main sides of the surface light guide, the opacity value is no more than 0.10, the transmission coefficient is at least 0.75 and the quotient of the minimum light density and maximum light density seen over a continuous emitting area of at least one of the main sides is at least 0.75.

Abstract: The invention relates to a surface light source with a lighting surface that includes at least one semiconductor body that emits electromagnetic radiation from its front side during operation. Decoupling structures are suitable for producing a local variation of the light density on the lighting surface, so that the light density is increased in at least one illumination area with respect to a background area.

Abstract: A method for producing a plurality of LED illumination devices which each emit light having an average value of a first photometric parameter including producing a plurality of LED chips which emit light of the same color; measuring values of the first photometric parameter of the LED chips; combining the LED chips to form groups of at least two LED chips which have different values of the first photometric parameter such that differences in the average values of all the LED illumination devices are imperceptible to the human eye; and equipping a respective LED illumination device with a group of LED chips.

Abstract: Various embodiments may relate to a radiation arrangement for providing electromagnetic radiation, including at least one radiation source for generating and outputting electromagnetic radiation, and an optical body, which has an outer wall and an inner wall, wherein the inner wall faces the radiation source and has a reflector, wherein the optical body is configured and arranged with respect to the radiation source such that the reflector reflects at least a portion of the electromagnetic radiation back to the radiation source, and that at least a portion of the electromagnetic radiation enters the optical body through the inner wall, and that the outer wall internally reflects at least a portion of the electromagnetic radiation which has entered the optical body, and that at least part of the internally reflected electromagnetic radiation exits the optical body.