Abstract: A laser-phosphor device is disclosed wherein laser radiation from a laser array is transmitted via a collimating primary optical unit and via an imaging optical system onto a phosphor layer. The laser arrangement has a plurality of lasers, for example laser diodes. Via the imaging optical system, a reduced imaging of the laser radiation distribution of the primary optical unit is produced on the phosphor layer.

Abstract: A projection system for illuminating a projection surface may include at least one light source formed from a plurality of light-emitting elements and an optical integrator having an entrance opening and an exit opening, into the entrance opening of which the light of each light-emitting element is coupled such that the mixed light of all the light-emitting elements emerges from its exit opening, and an imaging optical unit, which projects the light emerging from the exit opening of each integrator onto the projection surface, wherein an optical element is in each case arranged between the exit opening of each integrator and the imaging optical unit, said optical element shifting the virtual image of the entrance opening along an optical axis of the projection system such that its image generated by the imaging optical unit is not visible on the projection surface.

Abstract: A luminaire for illuminating a target area (34) by retroreflection from a reflector (30), comprising a light-emitting diode module (12) having at least one light-emitting diode; (14) and a cooling device (10) for the light-emitting diode module (12), the cooling device including as coolant a liquid (26) that is transparent to the light of the light-emitting diode module and a transparent coolant container (20) for accommodating the coolant; (26) wherein the coolant container (20) comprises a first (22) and a second transparent wall (24) between which the coolant (26) is located and which extend substantially perpendicularly to the optical axis (36) of the reflector (30) and have a surface such that in an assembled state in which the light-emitting diode module (12) and the cooling device (10) are connected to the reflector (30), at least 90% of the radiation of the light-emitting diode module (12) which is reflected from the reflector (30) and which reaches the target area (34) passes through the coolant cont

Abstract: A phosphor device (1) comprising a carrier member (2) having upper and lower faces; a phosphor layer (3) being arranged at the upper face of the carrier member (2), whereby the phosphor layer (3) comprises at least one phosphor zone (R; G; Y); a reflective zone (33) being arranged adjacent to the at least one phosphor zone (R; G; Y); an optical transmitting member (4) having a first end face (7) and a second end face (9), the optical transmitting member (4) being arranged at the top portion of the phosphor layer (3) and the reflective zone (33), whereby wherein the first end face (7) of the optical transmitting member (4) covers at least a subarea (8) of each of the at least one phosphor zone (R; G; Y) and the reflective zone (33).

Abstract: In various embodiments, a lighting device is provided. The lighting device may include: a pump light source; a phosphor arrangement; and a light control element arranged between the pump light source and the phosphor arrangement; wherein the light control element is configured to split the pump light beam into a reflected part and a transmitted part and for controlling the ratio between reflected part and transmitted part; and wherein the phosphor arrangement includes at least one phosphor which can be irradiated with the reflected part and/or transmitted part of the pump light of the pump light source and emits said pump light again at least partly in a wavelength-converted fashion.

Abstract: In various embodiments, a device for the beam shaping of light is provided. The device may include: a solid body composed of a transmission material that is at least partly transmissive to the light, the solid body including: a coupling-in surface for coupling in the light, a first reflection surface for deflecting the light, and a coupling-out surface for coupling out the light, wherein the solid body is designed to reflect the coupled-in light in its interior at the first reflection surface; and wherein the first reflection surface is embodied in a parabolic fashion in a sectional plane including a propagation direction of the reflected light.

Abstract: A lighting device (1, 1?) having a tube (2), at least sections of which are transparent, and a plurality of light-emitting diodes (LEDs) (4), the LEDs being arranged within the tube next to one another and parallel to the tube longitudinal axis (L), wherein at least one separate optical means (5, 6; 5?, 6?) is arranged within the tube (2).

Abstract: A reflector may have a reflective surface, wherein the contour of the reflective surface is traversed by a Bézier curve.

Abstract: A phosphor device (1) comprising a carrier member (2) having upper and lower faces; a phosphor layer (3) being arranged at the upper face of the carrier member (2), wherein the phosphor layer (3) comprises at least two tiled phosphor zones (R, G, B); an optical transmitting member (4) having a first end face (7) and a second end face (9), the optical transmitting member (4) being arranged at the top portion of the phosphor layer (3), whereby the first end face (7) of the optical transmitting member (4) covers at least a subarea (8) of each of the at least two phosphor zones (R, G, B).

Abstract: A projection device (1; 24), comprising a base (2), a support (3) and a projection head (4; 27), the support (3) being rotatable relative to the base (2) and relative to the projection head (4; 27) wherein a light guide system (10-18) is accommodated in the support, (3) and at least one wavelength-converting luminophore (22) for converting at least part of a light beam (L) generated by the at least one light source (5) is accommodated in the projection head (4; 27).

Abstract: The invention concerns a light source unit of tunable spectral properties, having a pump light source and a phosphor element for a conversion of pump light into converted light intended for illuminating a target, wherein the phosphor element has at least two phosphor element sections interacting differently with pump light, and wherein the light source unit further comprises a deflecting unit, such as a zoom lens or a variable diffraction grating, for deflecting the pump light so as to vary a distribution of pump light incident onto the phosphor element with respect to the different phosphor element sections, in order to vary spectral properties of the combined converted light beam emanating from the light source unit.

Abstract: A light source unit comprising: a pump light source (1) for an emission of pump light (2), a phosphor element (3) for a conversion of said pump light (2) into converted light (4), an optical system (6) for transmitting at least a part of said converted light (4) for further use, wherein at least a part of said pump light (2) is coupled into said optical system (6) and transmitted by said optical system (6) to said phosphor element (3) for said conversion.

Abstract: A projector for projecting an image includes: a light source for generating a light bundle; a pivotable deflection unit for deflecting the light bundle generated by the light source onto a projection surface; and an imaging device for imaging an aperture of the deflection unit onto the projection surface. The imaging device includes a mirror objective having at least two mirror elements. A method for projecting an image is also provided.

Abstract: A luminaire for illuminating a target area (34) by retroreflection from a reflector (30), comprising a light-emitting diode module (12) having at least one light-emitting diode; (14) and a cooling device (10) for the light-emitting diode module (12), the cooling device including as coolant a liquid (26) that is transparent to the light of the light-emitting diode module and a transparent coolant container (20) for accommodating the coolant; (26) wherein the coolant container (20) comprises a first (22) and a second transparent wall (24) between which the coolant (26) is located and which extend substantially perpendicularly to the optical axis (36) of the reflector (30) and have a surface such that in an assembled state in which the light-emitting diode module (12) and the cooling device (10) are connected to the reflector (30), at least 90% of the radiation of the light-emitting diode module (12) which is reflected from the reflector (30) and which reaches the target area (34) passes through the coolant cont

Abstract: An optoelectronic device for projecting a first beam (110) of coherent first electromagnetic radiation onto a surface (91) comprises a first radiation source (11), which is suitable for emitting a first beam (110) of coherent first electromagnetic radiation when in operation. The optoelectronic device additionally comprises a first phase-modifying element (21) in the beam path of the first electromagnetic radiation for changing the phase of the first electromagnetic radiation in a subzone (1102) of the first beam (110) and a radiation-directing element (4) in the beam path of the first electromagnetic radiation for changing a beam direction (P1, P2) of the first beam (110).

Abstract: A luminaire (100) comprising: a, a radiation source (16), a first optical element (10a) and a second optical element (10b) each with a non-planar surface (14a, 14b), wherein, in a base state, the second optical element (10b) engages in the first optical element (10a) with its non-planar surface (14a) in an exact fit, wherein the first and the second optical element (10a, 10b) are movable relative to each other, and wherein the first and the second optical element (10a, 10b) are identical in construction.

Abstract: A light guiding structure comprising a light guiding element (2) optically connected to a light source (6) and an optical element (10) coupled thereto, wherein the surface of the optical element (10) remote from the light guiding element (2) has the shape of a section (11) of a rotational ellipsoid, wherein a geometric cutting plane of the section (11) extends approximately at right angles to the longitudinal axis of the rotational ellipsoid.

Abstract: A lighting device (1, 1?) having a tube (2), at least sections of which are transparent, and a plurality of light-emitting diodes (LEDs) (4), the LEDs being arranged within the tube next to one another and parallel to the tube longitudinal axis (L), wherein at least one separate optical means (5, 6; 5?, 6?) is arranged within the tube (2).

Abstract: A reflector may have a reflective surface, wherein the contour of the reflective surface is traversed by a Bézier curve.

Abstract: A circuit arrangement for operating a discharge lamp, wherein the circuit arrangement comprises a commutation device, which has an input which is coupled to a DC source, and has an output which can be coupled to a discharge lamp. The commutation device is designed in such a way that it couples the DC source to the output, and the polarity at which the DC source is coupled to the output can be commutated by a control device. The control device has a sync input, and the polarity of the DC source is commutated in synchronism with sync pulses of a sync signal which can be applied at the sync input. The control device has a measuring input, which is coupled to a measuring device which is designed to provide a measured value which is a measure of the size of electrode peaks. The control device suppresses at least one commutation if the measured value overshoots or undershoots a predetermined threshold value.