摘要:
A holding device for a vacuum unit has a lifting table transferable between a lower end position and an upper end position for moving a support plate toward the underside of a disc-shaped workpiece. The workpiece is supported by a support ring carrying centring pins spaced to form an equilateral triangle, in the center of which the axis of the support plate is located. A clamping ring clamps the workpiece with the support ring. The centring pins engage the clamping ring to center the support ring and clamping ring relative to the support plate axis so they are not affected by thermal expansion.
摘要:
The invention relates to a fastener driving tool comprising a tank (5) for storing a fuel, in particular liquefied petroleum gas, a combustion chamber (2) connected to the tank (5), wherein the combustion chamber (2) has a movable piston for powering a driving plunger, and a metering device (4) arranged between the tank (5) and the combustion chamber (2) wherein a defined quantity of fuel can be transported by means of the metering device (4) from a metering space (12) into the combustion chamber (2), and wherein the metering device (4) comprises a movable displacement member (16) for ejecting the fuel out of the metering space (12), wherein the movement of the displacement member (16) is supplied by the pressure of the fuel as the energy source.
摘要:
A radiation detector is disclosed with a detector arrangement, which has a plurality of detector elements, by means of which a detector signal is obtained during operation of the radiation detector, and with a control device, wherein the detector elements each have a spectral sensitivity distribution, and are suited for generating signals. At least one detector element includes a compound semiconductor material, and this detector element is designed for detecting radiation in the visible spectral region. The radiation detector is designed such that the sensitivity distributions of the detector elements are used to form different spectral sensitivity channels of the radiation detector. A channel signal assigned to the respective sensitivity channel can be generated in these sensitivity channels using the detector elements, and the control device is designed such that the contributions of different channel signals to the detector signal of the radiation detector are differently controlled.
摘要:
A multiple quantum well structure (1) which comprises at least a first quantum well structure (2a) for generating radiation of a first wavelength (6) and at least a second quantum well structure (2b) for generating radiation of a second wavelength (7), which is greater than the first wavelength (6), and is provided for emission of radiation of a main wavelength (14), wherein the second wavelength (7) differs from the first wavelength (6) in such a way that the main wavelength (14) changes only by a predetermined maximum value in the event of a shift in the first wavelength (6) and the second wavelength (7). A radiation-emitting semiconductor body and a radiation-emitting component are furthermore described.
摘要:
The invention concerns an optoelectronic component comprising a layer stack that includes at least two active zones and a carrier that is applied to the layer stack. The invention further concerns a method of fabricating such an optoelectronic component.
摘要:
A method of producing an optoelectronic semiconductor chip having a semiconductor layer stack based on a material system AlInGaP includes preparing a growth substrate having a silicon surface, arranging a compressively relaxed buffer layer stack on the growth substrate, and metamorphically, epitaxially growing the semiconductor layer stack on the buffer layer stack, the semiconductor layer stack having an active layer that generates radiation.
摘要:
A composite substrate for a semiconductor chip includes a first covering layer containing a semiconductor material, a second covering layer, and a core layer arranged between the first covering layer and the second covering layer, wherein the core layer has a greater coefficient of thermal expansion than the covering layers.
摘要:
In a method of fabricating a radiation-emitting semiconductor chip based on AlGaInP, comprising the method steps of preparing a substrate, applying to the substrate a semiconductor layer sequence comprising a photon-emitting active layer, and applying a transparent decoupling layer comprising(Gax(InyAl1−y)1−xP wherein 0.8≦x and 0≦y≦1, it is provided according to the invention that the substrate is made of germanium and that the transparent decoupling layer is applied at low temperature.
摘要:
A luminous means (1) including at least one optoelectronic semiconductor device (2) which emits electromagnetic radiation during operation at at least one first wavelength (L1) and at at least one second wavelength (L2), wherein the first wavelength (L1) and the second wavelength (L2) differ from one another and are below 500 nm, in particular between 200 nm and 500 nm. Furthermore, the luminous means (1) includes at least one conversion means (3) which converts the first wavelength (L1) at least partly into radiation having a different frequency. The radiation spectrum emitted by the luminous means (1) during operation is metameric with respect to a black body spectrum. Such a luminous means makes it possible to choose the first wavelength and the second wavelength in such a way that a high color rendering quality and a high efficiency of the luminous means can be realized simultaneously.
摘要:
A radiation detector is disclosed with a detector arrangement, which has a plurality of detector elements, by means of which a detector signal is obtained during operation of the radiation detector, and with a control device, wherein the detector elements each have a spectral sensitivity distribution, and are suited for generating signals, at least one detector element comprises a compound semiconductor material, and this detector element is designed for detecting radiation in the visible spectral region, the radiation detector is designed such that the sensitivity distributions of the detector elements are used to form different spectral sensitivity channels of the radiation detector, a channel signal assigned to the respective sensitivity channel can be generated in these sensitivity channels using the detector elements, and the control device is designed such that the contributions of different channel signals to the detector signal of the radiation detector are differently controlled.