Abstract: A light-emitting diode apparatus (100) comprises a light-emitting diode element (102) having a front (106) and a back (128), wherein the front (106) has an emission region (108) for emitting electromagnetic waves (110) and a diode connection contact (112) that is associated with the emission region (108), and comprises a printed circuit board (104) having a passage opening (114) and a plate connection contact (118), wherein the front (106) of the light-emitting diode element (102) is connected to the printed circuit board (104), and wherein the emission region (108) is arranged opposite the passage opening (114) and the diode connection contact (112) is arranged opposite the plate connection contact (118) and is electrically conductively connected to the plate connection contact (118). A cover unit (120) having a recess (122) for holding the light-emitting diode element (102) is connected to the printed circuit board (104), wherein the cover unit (120) is formed from a further printed circuit board.

Abstract: A light-emitting diode apparatus (100) comprises a light-emitting diode element (102) having a front (106) and a back (128), wherein the front (106) has an emission region (108) for emitting electromagnetic waves (110) and a diode connection contact (112) that is associated with the emission region (108), and comprises a printed circuit board (104) having a passage opening (114) and a plate connection contact (118), wherein the front (106) of the light-emitting diode element (102) is connected to the printed circuit board (104), and wherein the emission region (108) is arranged opposite the passage opening (114) and the diode connection contact (112) is arranged opposite the plate connection contact (118) and is electrically conductively connected to the plate connection contact (118). A cover unit (120) having a recess (122) for holding the light-emitting diode element (102) is connected to the printed circuit board (104), wherein the cover unit (120) is formed from a further printed circuit board.

Abstract: A measuring module for remission photometric analysis of one or a plurality of specimens is provided with the following features: a transmitter with a transmission channel for transmitting a measuring radiation to location of the specimen; a first focusing device for focusing the measuring radiation on the specimen; a receiver with a receiving channel to receive the radiation reflected by the specimen; a second focusing device made of plastic for focusing the measuring radiation reflected by the specimen onto the receiver, whereby the second focusing device further comprises a filter which is designed to filter a fluorescence radiation from the specimen excited by the measuring radiation.

Abstract: A measuring module for remission photometric analysis of one or a plurality of specimens is provided with the following features: a transmitter with a transmission channel for transmitting a measuring radiation to location of the specimen; a first focusing device for focusing the measuring radiation on the specimen; a receiver with a receiving channel to receive the radiation reflected by the specimen; a second focusing device made of plastic for focusing the measuring radiation reflected by the specimen onto the receiver, whereby the second focusing device further comprises a filter which is designed to filter a fluorescence radiation from the specimen excited by the measuring radiation.

Abstract: The invention is directed to a surface emitting semiconductor light-emitting diode (LED) in which a reflector layer (4) of the first conductivity type is provided between a substrate (2) and a first barrier layer (5). A first contact layer (9) has at least one emitting surface (13) via which radiation emitted by an active layer (6) exits the LED. The emitting surfaces (13) are electrically and optically isolated from one another by surface implanted regions (11) in the first contact layer (9) which are irradiated with electric charge carriers. The areas of the layers located below the emitting surface (13) starting from the first contact layer (9) and proceeding as far as at least through the active layer (6) are electrically and optically isolated with respect to areas of the layers not located below the emitting surface (13) by means of first deep implanted regions (12.1) irradiated with electric charge carriers.

Abstract: An LED lamp and at least one associated system of such lamps for illuminating internal and external surfaces, in particular industrial facilities and surfaces, with improved lighting efficiency is provided. The radiation-source LEDs which are constructed as a 3-chip LED, and the adjacent chips are arranged rotated relative to one another in such a way that the asymmetrical emission of a 3-chip LED is balanced thereby. Aspherical individual lenses or individual lenses comprising a biconical surface are preferably used as optical elements.