Abstract:
A light-emitting diode arrangement having at least one light-emitting diode chip (1), each light-emitting diode chip (1) being assigned at least one optical element (4). In addition, the light-emitting diode arrangement has at least one heat-conducting element (13) which is suitable to carry away the heat generated by the light-emitting diode chip, and at least one cooling apparatus which is suitable to carry heat away from the heat-conducting element. The light-emitting diode arrangement is particularly well suited, for example, to use in motor vehicle headlamps.
Abstract:
A housing for an electromagnetic radiation emitting optoelectronic component is specified. The housing comprises a housing base body provided with a recess in which at least one chip mounting surface is disposed. At least one outer surface of the housing base body, disposed on an emission side of the housing and adjoining the recess, is provided with a baffle layer suitable for screening an electromagnetic radiation. An electromagnetic radiation emitting component provided with such a housing and a method of making a corresponding housing or component are also specified.
Abstract:
A projection apparatus is specified, comprising a light modulator having a light receiving region with a cross-sectional area to be illuminated of the size AM and a maximum acceptance angle α for incident light, and at least one light source by means of which, during its operation, a light cone is produced for illuminating said cross-sectional area of said light receiving region and which comprises a number N of LED chips having a maximum radiation angle β. At least one of the LED chips has a radiation decoupling area of the size AD. The relation 0.7·(AM·sin2(α))/(AD·sin2(β)·n2)≦N≦1.3·(AM·sin2(α))/(AD·sin2(β)·n2) applies, where n is equal to 1 or to the refractive index of a coupling medium with which the LED chips are provided.
Abstract:
A radiation-emitting component includes a semiconductor layer stack having an active region that emits electromagnetic radiation, and at least one surface of the semiconductor layer stack or of an optical element that transmits the electromagnetic radiation wherein the surface has a normal vector, wherein on the at least one surface of the semiconductor layer stack or of the optical element through which the electromagnetic radiation passes, an antireflection layer is arranged such that, for a predetermined wavelength, it has a minimum reflection at a viewing angle relative to the normal vector of the surface at which an increase in a zonal luminous flux of the electromagnetic radiation has approximately a maximum.
Abstract:
A light-emitting module includes a supporting element, a number of optoelectronic semiconductor components mounted on the supporting element for the generation of electromagnetic radiation, and a metallic connecting layer by means of which the optoelectronic semiconductor components are supplied with operating voltage. An insulation layer is arranged in a region of the optoelectronic semiconductor components between the supporting element and the metallic connecting layer. The metallic connecting layer forms a light shade for the optoelectronic semiconductor components, so that the electromagnetic radiation is only emitted in a specified direction.
Abstract:
A housing for an electromagnetic radiation emitting optoelectronic component is specified. The housing comprises a housing base body provided with a recess in which at least one chip mounting surface is disposed. At least one outer surface of the housing base body, disposed on an emission side of the housing and adjoining the recess, is provided with a baffle layer suitable for screening an electromagnetic radiation. An electromagnetic radiation emitting component provided with such a housing and a method of making a corresponding housing or component are also specified.
Abstract:
An optoelectronic component with a desired color impression in the switched-off state includes, in particular, a semiconductor layer sequence with an active region, that during operation radiates electromagnetic radiation with a first spectrum, and a wavelength conversion layer that is disposed downstream from the semiconductor layer sequence in the beam path of the electromagnetic radiation with the first spectrum, and that at least partially converts a subspectrum of the electromagnetic radiation with the first spectrum into electromagnetic radiation with a second spectrum, and a filter layer that reflects at least a part of the radiation incident from outside onto the optoelectronic component.