Abstract: A light emitting device includes a plurality of light emitting diode stacks and a cooler. The plurality of light emitting diode stacks are each mounted to and cooled by the cooler. A light emitting device includes a plurality of light emitting diode stacks, a cooler, and a power supply. The plurality of light emitting diode stacks are each mounted to and cooled by the cooler, the power supply is configured to power the plurality of light emitting diode stacks, and the power supply is mounted to the cooler on an opposite side of the cooler relative to the plurality of light emitting diode stacks.

Abstract: A light emitting device, including a plurality of emitter subassemblies and a lens array, each emitter subassembly including a plate-shaped light emitter having two sides and configured to emit light from an edge, and at least one plate-shaped submount attached to at least one side of the plate-shaped light emitter. Each of the plurality of emitter subassemblies are disposed parallel to one another and sintered to one another in such a manner as to form a light emitting diode stack. A predefined pitch pattern defines distances between adjacent emitter subassemblies. The lens array is mounted on the light emitting diode stack and includes a plurality of lenses combined as a single unitary body. Distances between the lenses correspond to the distances defined by the predefined pitch pattern such that each of the plurality of lenses is aligned with a corresponding one of the plate-shaped light emitters.

Abstract: A device for wavelength coupling of laser beams (2a, . . . 2n) with different wavelengths (?1, . . . ?n), comprising: at least one laser source for generating a plurality of laser beams (2a, . . . , 2n), and an overlapping device for spatial overlapping of the plurality of laser beams (2a, . . . , 2n) for forming an overlapped laser beam with a plurality of wavelengths (?1 . . . ?n). The device has a feedback device arranged between the laser source and the overlapping device for feeding a radiation proportion of the laser beams (2a, . . . , 2n) to be overlapped back to the laser source, the feedback device comprising a partially reflecting angle-dispersive optical element, in particular a partially reflecting diffraction grating. The overlapping device may, for example, be configured as a transmitting or reflecting diffraction grating whose optical properties are adapted to the optical properties of the partially reflecting diffraction grating to overlap the laser beams (2a, . . .