Abstract: In a known method for operating an amalgam lamp having a nominal power Poptimum, it is provided that a lamp voltage Uoptimum designed for a maximum UVC emission is applied between electrodes or a lamp current Ioptimum designed for a maximum UVC emission flows between electrodes. The discharge space is accessible for an amalgam deposit, which is heatable by a heating element in which a heating current Iheating is conducted through the heating element. Starting from this background, in order to provide an operating mode that ensures a stable operation in the region of the optimum power, it is proposed that a target value of the lamp current Itarget is set that is less than Ioptimum and that the heating current Iheating is turned on or increased when the lamp current falls below a lower limit I1 and is turned off or reduced when it exceeds an upper limit I2 for the lamp current.

Abstract: A method is provided for reproducibly producing a carbon band twisted about its longitudinal axis. According to the method carbon fibers are fed into a processing device and are formed into a band-shaped preform having a centerline and an edge on both sides thereof. A shorter average fiber length is fed by the processing device when forming the centerline area than when forming the edges. The preform is subsequently further processed into the carbon band.

Abstract: An optical module is provided, including a substrate (1) of a defined shape, the substrate having two surfaces (1a, 1b) opposite from each other and an edge (1c). A layer (2) covers at least one of the surfaces (1a, 1b) of the substrate (1). The layer (2) includes a transparent polymeric material and has at least one optical element (3) which scatters rays of light originating from the substrate and passing through the optical element (3). A design feature for at least one of mounting and aligning (4, 5) the optical module is provided in a mounting region of the layer and is the same material and the same part as the layer (2).

Abstract: A method is provided for production of a module, including the steps of: (a) providing a substrate (1) having a first surface (5); (b) providing an open casting mold (6), wherein the formation of at least one optical element (4, 4?) is provided in the casting mold (6); (c) coating the first surface (5) with an adhesion promoter (2); (d) covering the coated surface (2, 5) with a silicone (3) in the open casting mold while forming the optical element from the silicone (3); and (e) curing the silicone in the casting mold.

Abstract: A method is proposed for coating an optoelectronic chip-on-board module including a flat substrate populated with one or more optoelectronic components having at least one primary optical arrangement and optionally at least one secondary optical arrangement.

Abstract: The invention relates to an optoelectronic module (112), more particularly to an optoelectronic chip-on-board module (114). The optoelectronic module (112) comprises a substrate (116), wherein the substrate (116) has a planar design. Furthermore, the optoelectronic module (112) comprises a plurality of optoelectronic components (118) that are arranged on the substrate (116). The optoelectronic module (110) further comprises at least one optical system (120) applied onto the substrate (114), more particularly a microoptical system having a plurality of microoptical elements. The optical system (120) comprises at least one primary optical system (124) that is adjacent to the optoelectronic components (116) and at least one secondary optical system (138).

Abstract: Known devices for heat treatment comprise a process space surrounded by a furnace lining made of quartz glass, a heating facility, and a reflector. In order to provide, on this basis, a device for heat treatment having a furnace lining that can be manufactured easily and in variable shapes and enables rapid heating and cooling of the material to be heated and short process times and is characterised by its long service life, the invention proposes that the furnace lining comprises multiple wall elements having a side facing the process space and a side facing away from the process space, and that at least one of the wall elements comprises multiple quartz glass tubes that are connected to each other by means of an SiO2-containing connecting mass.

Abstract: The invention relates to an optoelectronic module (112), more particularly to an optoelectronic chip-on-board module (114). The optoelectronic module (112) comprises a substrate (116), wherein the substrate (116) has a planar design. Furthermore, the optoelectronic module (112) comprises a plurality of optoelectronic components (118) that are arranged on the substrate (116). Furthermore, the optoelectronic module (112) comprises a lens system (122) having a plurality of lenses (124). The lens system (122) comprises at least two lenses (124) with different directivities.

Abstract: Conventional mercury vapor discharge lamps include a closed emitter tube made of quartz glass having an emitter tube end, a gas-tight seal in the region of the emitter tube end, and two electrodes arranged inside the emitter tube for generating a discharge in a discharge zone between the electrodes, as well as an amalgam reservoir. In order to provide a mercury vapor discharge lamp having an amalgam reservoir, which can be operated at high efficiency at variable irradiation power and also is easy and inexpensive to manufacture, an annular gap is formed in the region of the emitter tube end between a quartz glass tube and the emitter tube, and the amalgam reservoir is arranged inside the annular gap.

Abstract: A method is provided for manufacture of an electrically conductive material, including the steps of: (a) providing a structure made of electrically conductive fibers, and (b) producing a carbon-based, electrically conductive matrix at least partially enveloping the electrically conductive fibers. Before or after producing the matrix, at least part of the electrically conductive fibers are interrupted in the direction of possible current flow. Electrically conductive materials obtained in corresponding manner are also provided. An emitter is specified that contains a transparent or translucent housing and an electrically conductive material according to the above. The electrically conductive materials have an increased electrical resistance. These allow emitters of virtually any length to be operated at customary line voltages.

Abstract: An irradiation device is provided having a housing having an interior chamber and an infrared emitter arranged therein. The infrared emitter has an emitter tube made of high silica content glass having a round cross section and a defined outer diameter. Electrical connection elements are made of a metallic material and led out from the emitter tube through a seal. In order to provide the emitter with a long service life and potentially higher output, which is also suitable for being enclosed by a seal that separates the regions of different media, temperatures, or pressures, the emitter tube end also has a round cross section and the defined outer diameter. Between the electrical connection element and the emitter tube there is a seal containing at least one transition glass, which has a thermal expansion coefficient lying between that of the metallic material and that of the high silica content glass.

Abstract: A method for manufacturing an electrically conductive material includes steps of: (a) providing a carbon fiber; (b) providing a plastic fiber that differs from the carbon fiber; (c) producing a mixture in the form of a two-dimensional mat from the carbon fiber and the plastic fiber; (d) drying the mixture, optionally; (e) consolidating the mixture; (f) cutting the mixture to size, optionally; (g) carbonizing the mixture, wherein the carbonized plastic fibers form a carbon-based matrix possessing electrical conductivity that at least partially surrounds the carbon fibers. Electrically conductive materials obtained by the method have an increased electrical resistance. An emitter is specified that contains a transparent or translucent housing and an electrically conductive material as to above. These now allow emitters of virtually any length to be operated at customary line voltages.

Abstract: A known device for curing of coatings or plastic liners on the internal wall of elongated hollow spaces includes a UV lamp having a bulb for emission of optical radiation. Based on this known device, it is proposed to provide a device for the curing of coatings or plastic liners on the internal wall of elongated hollow spaces that has a long service life and has a reduced attendant risk of damage to health and materials. The proposed device has an optical filter element to reduce the emission of an ultraviolet fraction of the optical radiation. The optical filter element has a spectral transmission of at least 80% cm?1in a wavelength range of 400 nm to 450 nm, and has an edge wavelength in the range of 350 nm to 380 nm.

Abstract: An IR radiant heater has at least one planar carbon heating element (1) arranged in a housing, which is transparent or at least partially transparent to IR radiation. At least one carbon heating element (1) is a carbon fiber-reinforced carbon (CFC) web arranged in a plane and arranged between two plates (2, 3), of which at least one is transparent or partially transparent.

Abstract: A device is provided having a holder region including a first holder for a first thread and at least one further holder for at least one further thread, at least one contact area for contacting the first thread and the at least one further thread. At least one radiation source is provided between the holder region and the contact area.

Abstract: An irradiation device is provided having a housing having an interior chamber and an infrared emitter arranged therein. The infrared emitter has an emitter tube made of high silica content glass having a round cross section and a defined outer diameter. Electrical connection elements are made of a metallic material and led out from the emitter tube through a seal. In order to provide the emitter with a long service life and potentially higher output, which is also suitable for being enclosed by a seal that separates the regions of different media, temperatures, or pressures, the emitter tube end also has a round cross section and the defined outer diameter. Between the electrical connection element and the emitter tube there is a seal containing at least one transition glass, which has a thermal expansion coefficient lying between that of the metallic material and that of the high silica content glass.

Abstract: A method is proposed for coating an optoelectronic chip-on-board module including a flat substrate populated with one or more optoelectronic components having at least one primary optical arrangement and optionally at least one secondary optical arrangement.

Abstract: A method is provided for coating an optoelectronic chip-on-board module, including a flat substrate populated with one or more optoelectronic components, having a transparent, UV-resistant, and temperature-resistant coating made of one or more silicones. A corresponding optoelectronic chip-on-board module and a system having multiple optoelectronic chip-on-board modules are also provided. The method includes the following steps: a) preheating the substrate to be coated to a first temperature; b) applying on the preheated substrate a dam that encloses a surface area or partial area of the substrate to be coated, the dam being made of a first, heat-curable, highly reactive silicone that cures at the first temperature; c) filling the surface area or partial area of the substrate enclosed by the dam with a liquid second silicone; and d) curing the second silicone.

Abstract: A device and method are provided for controlling the temperature, in particular for cooling, of an LED lamp or LED modules of an LED lamp, e.g., for curing a light-cured pipe. The device includes: a fluid supply line and multiple heat exchangers connected to the supply line; multiple LEDs coupled to each heat exchanger with respect to heat transfer; and a fluid return line. The fluid supply and return lines are connected to each other in a fluid-tight manner by various combinations of L-pieces and T-pieces in or at the ends of the fluid supply and the return lines, so that the fluid flows from the LEDs in a spatially separated way and the fluid supply and return lines have at least two parallel fluid connections to each other, the heat exchangers being arranged in the fluid connections or constituting the fluid connections.

Abstract: An infrared emitter has at least one emitter tube (11) having pinched sections at each of its ends. At least one opaque tube portion (12) is arranged in a manner welded in alignment with the at least one emitter tube. The infrared emitter may be installed in a processing chamber (21).