Abstract:
A tanning device is described by which the bluish light emitted by mercury vapor lamps is converted into yellow or white light. For this purpose, the mercury lamps, or the sheets of transparent plastics material covering these lamps, are doped or coated with one or more organic or inorganic fluorescent dyes that partially absorb the blue light emitted by the mercury lamps and convert it into light of wavelengths of 550 to 650 nm.
Abstract:
The invention relates to a method of manufacturing europium-doped (Ca1-xSrx)S (0£x£1) luminescent material with a short decay time and a high thermal extinction temperature, wherein the europium-doped strontium sulfide is subjected to at least a first caldnation step at high temperatures in the presence of at least one iodine compound. The invention further relates to the luminescent material as such and to its use for light-emitting components such as light-emitting diodes (LEDs) and laser diodes coated with luminescent materials.
Abstract:
At least part of wall internal surfaces, has a coating containing material fluorescing in the ultraviolet-C (UV-C) waveband. An Independent claim is included for the gas discharge lamp without limitation to disinfection of water.
Abstract:
The lighting apparatus according to the invention comprises one or several light sources and a light guide including a light outcoupling structure. The lighting apparatus emits light between 280 and 800 nanometers. It is an object of the invention to provide an improved apparatus for scientific and therapeutic purposes with a ligth source of planar structure, which can be optimally adapted to an exposed area. This is achieved by light sources or parts of them being easily replaceable. The light sources may be fluorescent lamps based on an Hg, Ne, Xe or Xe/Ne discharge or they may also be LEDs.
Abstract:
A device for generating ultraviolet radiation by means of an excimer discharge, which device is equipped with an at least partly UV-transparent discharge vessel whose discharge space is filled with a gas filling, with means for triggering and maintaining an excimer discharge in the discharge space, and with a luminescent material that contains a phosphor comprising a host lattice of general formula ( Y1-x-y-z ,Lu x ,Sc y ,A z )PO 4 wherein 0 = x 1-x-y-z ,Lu x ,Sc y ,A z )PO 4 wherein 0 = x 80%) and a strong absorption of 170 to 190 nm radiation. These phosphors emit UV-C radiation comprising a broadened band in the wavelength range between 225 and 275nm.
Abstract translation:一种用于通过准分子放电产生紫外线辐射的装置,该装置装备有至少部分UV透明的放电容器,其放电空间填充有气体填充物,具有用于在放电空间中触发和保持准分子放电的装置 ,以及含有荧光体的发光材料,该荧光体包含通式(Ⅺ-Y1-xyz Lu Lu Lu Lu Lu Lu Sc Sc,,,,A A A A A A A 其中0 = x 80%)和170至190nm辐射的强吸收。 这些荧光体发射包含在225和275nm之间的波长范围内的加宽带的UV-C辐射。
Abstract:
The invention relates to UV emitting nanoparticles for radiation therapy purposes. If the nanoparticles are brought indirectly or directly to the diseased tissue, excitation with high energy radiation leads to VUV or UV-C emission. This UV radiation is absorbed by the surrounding organic matrix, resulting in decomposition of the material. The nanoparticles can also be modified by attaching antibodies to the particles by chemical linking or coating. Preferably these antibodies bind specifically to the cell membrane of cancer cells leading to a localised destruction of diseased tissue with a high efficacy and a lower level of destruction of surrounding healthy tissue. Endoscopic detection of the UV emission can be used as a medical imaging technique to locate and study diseased tissue.
Abstract:
This invention relates to a dielectric barrier Xe discharge lamp comprising an UV-B phosphor. The lamp consists of a gas-tight, discharge vessel with a gas filling containing Xe or a Xe/Ne mixture and is provided with a luminescent layer, which comprises at least one luminescent material emitting in the UV-B range (280 to 320 nm). The luminescent layer comprises a Gd activated phosphor according to the formulas McPO4:Gd, Lal1_XA13(BO3)4:GdX, and La1_xB3O6:Gdx which is eventually sensitised by Bi , Pr or Nd The advantages of such an UV-B emitting discharge lamp over fluorescent lamps based on a Hg low-pressure discharge are a high power density, 10 instant light, long lifetime, a spectral power distribution which is only determined by the phosphor blend, and an arbitrary burner design.
Abstract:
A plasma display screen comprising a carrier plate, a transparent front plate, a ribbed structure dividing the space between the carrier plate and the front plate into plasma cells, which are filled with a gas, one or more electrodes arrays for generating corona discharges in the plasma cells, and a phosphor layer comprising a blue-emitting phosphor of the general formula (La1-x-yGdx)Si3N5:Cey, where 0
Abstract translation:一种等离子体显示屏,包括承载板,透明前板,将载体板和前板之间的空间分成等离子体单元的肋状结构,其填充有气体,一个或多个电极阵列,用于产生电晕放电 等离子体电池和包含通式(La1-x-yGdx)Si3N5:Cey的蓝色发光荧光体的荧光体层,其中0 <= x <1且0
Abstract:
The invention relates to plasma display panels with a segmented fluorescent layer (9), in which green color filter layers (14) of Pr3+-containing materials of green-emitting color segments are deposited between the fluorescent layer (9) and the carrier plate (2), which improve the color dot of the green light which is emitted by the Tb3+-activated fluorescent substance.
Abstract:
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.