摘要:
To overcome the disadvantages introduced by using UV sensors to detect the intensity of UV light in water purification apparatuses, the present invention provides a novel detection apparatus to "visualize" the quality of water in the form of visible light, instead of digitizing the intensity of UV light. The detection apparatus comprises a first detection window, coated with a first material for converting a received first ultraviolet light into a first visible light, wherein the first ultraviolet light is emitted from an ultraviolet light source and traverses the liquid, and the apparatus further mixes the first visible light with a second visible light to generate a third visible light. The different color of the third visible light can represent the different quality of the water.
摘要:
The present invention relates to a light source, which produces light leaving the light source with modifiable colour and luminosity, with at least one light emitting diode for emitting primary radiation, comprising a layer connected with said diode, wherein said layer includes at least one luminescent material for converting the primary radiation into a secondary radiation.
摘要:
The invention provides a beverage carbonator (1) for providing a carbonated beverage (2). The beverage carbonator (1) comprises (a) a CO2 generation unit (10) comprising a photo electrochemical cell (22) arranged to convert an organic compound (23) in a first liquid (21) comprising the organic compound (23) under influence of light (24) into at least CO2 and to produce a CO2 comprising gas (25), (b) a pressure regulator (30) arranged to pressurize the CO2 comprising gas (25), and (c) a mixing chamber (40) for mixing the CO2 comprising gas (25) under pressure into a second liquid (41) to provide the carbonated beverage (2).
摘要:
The invention relates to a luminescent converter(101) that may for example be used as a luminescent solar concentrator(LSC) in a solar power generator(100). The luminescent converter(101) comprises magic-sized clusters (110), MSCs, of a luminescent material. Preferably, said luminescent material comprises a compound of two elements from groups IV and VI, for example PbSe. The MSCs(110) may be embedded in a transparent light guiding element(120) or be embedded in a thin film on a surface thereof.
摘要:
The invention relates to nanoparticles coated with an inorganic nanoscale material herein referred to as core-shell nanoparticle, in which the core material has a wider band gap than the shell material. The described core-shell nanoparticles are very suitable for the application in photodynamic therapy due to their enhanced energy transfer ability.
摘要:
The invention relates to a marking system comprising lighting devices, for example LEDs (11), that are used on a sport area (1) to indicate demarcations (100) of different games. By activating the associated lighting devices (11), the demarcations (100) of a particular game can selectively be made visible. The marking system may further comprise detection devices that can detect the occurrence of certain game events. Thus photodetectors (12) may for example detect if a ball (2) crosses a demarcation (100). A controller (13) may then activate the lighting devices (11) or separate signaling devices (14, 15) to indicate the detected event. The controller (13) may further communicate wirelessly with persons on the sport area, particularly with the referee to assist his/her decisions.
摘要:
The present invention provides a method of monitoring performance of a discharge lamp. The discharge lamp includes electrodes and a discharge vessel filled with gas and equipped with a luminescent layer, wherein the gas is intended to emit a first ultraviolet light in a first spectral range when the gas is excited by an electric field produced by the electrodes, and at least part of the first ultraviolet light is intended to be changed into a second ultraviolet light in a second spectral range of longer wavelength than the first spectral range by the luminescent layer. The method comprises the steps of finding the value of a first intensity of the first ultraviolet light; finding the value of a second intensity of the second ultraviolet light; and determining the conversion efficiency of the luminescent layer for converting the first ultraviolet light into the second ultraviolet light on the basis of the ratio of the value of the second intensity to the value of the first intensity.
摘要:
The invention relates to an illumination system with a material having a low or negative thermal expansion coefficient in order to compensate for the thermal expansion of the further materials present in the illumination system.
摘要:
The present invention relates to a light source, which produces light leaving the light source with modifiable colour and luminosity, with at least one light emitting diode for emitting primary radiation, comprising a layer connected with said diode, wherein said layer includes at least one luminescent material for converting the primary radiation into a secondary radiation.
摘要:
A device (100) for activating a physiologically effective substance (101) by ultrasonic waves (103, 105), the device comprising an ultrasonic transducer (102) adapted to generate ultrasonic waves (103), a focusing element (104) adapted to focus the generated ultrasonic waves (103), and an adjustment unit (107) adapted to adjust a position (106) to which the focusing element (105) focuses the generated ultrasonic waves (103) in a manner that the focused ultrasonic waves (103) are bringable in interaction with the physiologically effective substance (101) at the adjusted position (106).