Abstract: An LED lighting device for connection to an AC voltage source is provided. The lighting device includes at least a first and a second set of LEDs, at least two LEDs assigned to the first set of LEDs and electrically arranged in series, and at least two LEDs assigned to the second set of LEDs and electrically arranged in series, a connector configured to connect the LED lighting device to the AC voltage source, and a set activator. The set activator having a voltmeter for measuring a currently applied voltage amplitude of the AC voltage source, a signal generator for generating a switching signal in response to the currently applied voltage amplitude, and a current controller for controlling the current flowing through the at least first and second sets of LEDs.

Abstract: Lighting equipment for generating white light from blue or violet excitation light and converted emitted yellow light is provided. The excitation light is directed at an oblique angle towards a converter that is attached to a carrier device, without the emitted illumination light impinging on the carrier device.

Abstract: A fiber-optic conversion module is provided as part of a lighting device on a vehicle. The module includes optical fibers with connectors, a light exit head, and a converter mounted on a cooling element. Shorter wavelength excitation light is fed to the optical fibers that emit the excitation light towards the converter arranged at an angle relative to the beam direction, at a light spot that remits useful light in a radiation angle in form of a cone of useful light and reflects excitation light as a Fresnel reflection substantially outside the cone of useful light, where Fresnel reflection is made harmless by a light stop.

Abstract: A fiber-optic conversion module is provided as part of a lighting device on a vehicle. The module includes optical fibers with connectors, a light exit head, and a converter mounted on a cooling element. Shorter wavelength excitation light is fed to the optical fibers that emit the excitation light towards the converter arranged at an angle relative to the beam direction, at a light spot that remits useful light in a radiation angle in form of a cone of useful light and reflects excitation light as a Fresnel reflection substantially outside the cone of useful light, where Fresnel reflection is made harmless by a light stop.

Abstract: An arrangement for generating white light is provided. The arrangement generates the white light by combining blue light and yellow light. The yellow light originates from a converter which transforms into yellow light virtually all blue light that enters the converter.

Abstract: An illumination device for generating white light is provided. The device includes a converter and a filter. The converter has a Ce:YAG ceramic, which converts blue excitation light into yellow light of a color location near the white point in the chromaticity diagram. The filter attenuates a light fraction below 530 nm so as to obtain the white light.

Abstract: A lighting device having a side-emitting fiber bundle is provided. The fiber bundle is inserted in a sleeve that has an extension, which is effective as a light mixer.

Abstract: A light source is provided that includes at least two semiconductor light-emitting elements that emit light of different color, a light guide, an electronic control unit, and a light sensor. The light emitted by the elements is injected, at least partially, into the light guide and exits laterally from the light guide. The brightness of the elements can be adjusted by the electronic control unit. The light sensor is arranged to receive the light injected by the elements and laterally exiting from the light guide. The electronic control unit accumulates sensor signals from the light sensor over an integration time interval and compares the accumulated signals with a target value or range to determine a difference, changes a brightness of the elements in response to the difference, and changes the integration time interval in response to the difference or to a change in the target value.

Abstract: An optical arrangement is provided that includes a first optical element comprising a light guide that has a bevel face and a second optical element. The first optical element conducts light by total internal reflection at a wall and has a light entry area defined by a non-beveled end face and a light exit area formed by a surface area of the wall at that end proximate the bevel face. The second optical element has a light entry aperture arranged on or facing the light exit area. The light entry area has a width x and the light entry aperture has a height z, which meet the following relationship: x/z?1.5·[tan(90°??/2)?tan(90°?(2·[?/2+90°]?[180°?arcsin(1/n)]))]?1. Herein, ? denotes the deflection angle of the light at the bevel face and n denotes the refractive index of the material of the first optical element.

Abstract: An LED lighting device for connection to an AC voltage source is provided. The lighting device includes at least a first and a second set of LEDs, at least two LEDs assigned to the first set of LEDs and electrically arranged in series, and at least two LEDs assigned to the second set of LEDs and electrically arranged in series, a connector configured to connect the LED lighting device to the AC voltage source, and a set activator. The set activator having a voltmeter for measuring a currently applied voltage amplitude of the AC voltage source, a signal generator for generating a switching signal in response to the currently applied voltage amplitude, and a current controller for controlling the current flowing through the at least first and second sets of LEDs.

Abstract: A fiber-optic conversion module is provided as part of a lighting device on a vehicle. The module includes optical fibers with connectors, a light exit head, and a converter mounted on a cooling element. Shorter wavelength excitation light is fed to the optical fibers that emit the excitation light towards the converter arranged at an angle relative to the beam direction, at a light spot that remits useful light in a radiation angle in form of a cone of useful light and reflects excitation light as a Fresnel reflection substantially outside the cone of useful light, where Fresnel reflection is made harmless by a light stop.

Abstract: A device for generating white light is provided that includes at least one light source and at least one conversion medium. The light source emits light in the blue and/or ultraviolet spectral range. The light from the light source is generated by a laser and the light from the light source is focused by an optical system onto the conversion medium. The conversion medium converts at least part of the incident light into a different spectral range.

Abstract: The production of optoelectronic components, optical components being mounted in the composite wafer. Provided to this end is a method for producing optoelectronic components, in particular image signal acquiring or image signal outputting components, in the case of which optical components are respectively provided, picked up and mounted on a wafer, the optical components preferably respectively being positioned individually or in groups relative to the position of assigned optoelectronic or optical components of the wafer or of a wafer to be connected thereto.

Abstract: A driver circuit for a semiconductor light source and to a method for controlling the brightness thereof are provided. When a pulse width modulated semiconductor light source reaches a duty cycle threshold value, the voltage is increased or decreased through a variable voltage source in order to achieve a higher dynamic range.

Abstract: A method for producing optoelectronic components, the method comprising the steps of: providing optical components; picking up, by means of a robot arm, the optical components provided; subsequent to picking up the optical components, mounting the optical components directly on a first wafer by means of the robot arm; wherein the first wafer has optoelectronic components attached, and the optical components being positioned individually or in groups relative to the position of the optoelectronic components of the first wafer using the robot arm; and utilizing, as the first wafer, a glass wafer having i) spectrally filtering glass being an infrared filter glass and ii) an infrared filter coating, the glass wafer having a thickness in the range of 50 to 500 micrometers.

Abstract: An arrangement for generating white light is provided. The arrangement generates the white light by combining blue light and yellow light. The yellow light originates from a converter which transforms into yellow light virtually all blue light that enters the converter.

Abstract: A converter (2) of a CE:YAG ceramic converts blue excitation light into yellow light of a color location near the white point in the chromaticity diagram. A filter (3) attenuates the light fraction below 530 nm so as to obtain white illumination light.

Abstract: Lighting equipment for generating white light from blue or violet excitation light and converted emitted yellow light is provided. The excitation light is directed at an oblique angle towards a converter that is attached to a carrier device, without the emitted illumination light impinging on the carrier device.

Abstract: A cooking apparatus with a cooktop composed of a glass or glass-ceramic material is provided. The cooking apparatus includes a heating element and a lighting element that are disposed in the region below the underside of the cooktop. The heating element is applied to the underside of the cooktop indirectly by a pressing device or directly by pre-stressing one or a plurality of spring elements. The lighting element and the heating element are disposed on a common support section of the pressing device in such a way that they are adjustable with an oscillation of the cooktop.

Abstract: A device for generating white light is provided that includes at least one light source and at least one conversion medium. The light source emits light in the blue and/or ultraviolet spectral range. The light from the light source is generated by a laser and the light from the light source is focused by an optical system onto the conversion medium. The conversion medium converts at least part of the incident light into a different spectral range.