Abstract:
An RF fluorescent lamp comprising an electric ballast comprising an inverter circuit operating at a first frequency that provides the voltage and current with reference to local ground to a switching node connected to a first end of a winding of a power coupler, a timing circuit operating at a second frequency equal to or less than half the first frequency, and an enable circuit activated by the timing circuit that enables and disables the inverter circuit.
Abstract:
Coating systems suitable for use in fluorescent lamps, particularly as scattering agents within a UV-reflecting coating for the purpose of improving fluorescent lamp luminosity. Such a coating system is provided on a transparent or translucent substrate and includes a phosphor coating and a scattering agent that scatters UV rays. The scattering agent includes an inorganic powder present in a separate UV-reflecting layer adjacent the phosphor coating and/or dispersed in the phosphor coating so that the scattered UV rays are absorbed by the phosphor coating and cause the phosphor coating to emit visible light. The inorganic powder exhibits low or no absorption to UV rays having wavelengths of 185 nm and 254 nm and is not reactive with mercury.
Abstract:
The invention relates to a self-supporting luminescent film (10), a phosphor-enhanced illumination system and to a method of manufacturing the self-supporting luminescent film. The self-supporting luminescent film comprises luminescent particles (20) and an organic polymer (30). The luminescent particles comprise luminescent material which is arranged for absorbing at least part of the impinging light impinging on the luminescent particles and for converting the absorbed light into converted light. The converted light has a predefined spectrum different from the impinging light. The organic polymer interconnects the luminescent particles to form the self-supporting luminescent film, wherein the self-supporting luminescent film comprises less than 10 weight percentage of organic polymer. The effect of the measures according to the invention is that the close packing of the luminescent particles generates a substantially uniform self-supporting luminescent film.
Abstract:
A fluorescent lamp includes a glass container (204) having mercury enclosed therein, and a phosphor layer (202) formed on an inner side of the glass container (204). The phosphor layer (202) includes phosphor particles (202a) and rod-shaped bodies (202b) composed of a metal oxide and spanning between the phosphor particles. The rod-shaped bodies (202b) have a thickness of, for example, 1.5 [μm] or less. Pairs of adjacent phosphor particles may be spanned by more than one rod-shaped body.
Abstract:
A UV-emitting phosphor comprising SrB4O7:Eu phosphor particles that have been treated to yield a surface layer containing from greater than 0 to about 25 atomic percent aluminum. The holdover stability of the treated SrB4O7:Eu phosphor improves the 100-hour maintenance in a fluorescent tanning lamp to the extent that the treated phosphor may be subject to a holdover period of more than 25 days without a significant change in its 100-hour maintenance.
Abstract translation:已经经过处理以产生含有大于0至约25原子百分比的铝的表面层的包含SrB 4 O 7:Eu荧光体颗粒的紫外线发射磷光体。 处理过的SrB 4 O 7:Eu荧光体的保持稳定性改善了荧光鞣制灯中的100小时维护,使得经处理的荧光体可能经受 持续时间超过25天,其100小时维护没有显着变化。
Abstract:
A rare-gas low-pressure discharge lamp for generating ultraviolet light, in particular for cosmetic or therapeutic purposes, has a discharge vessel which is filled with rare gas and is at least partly transparent to UV light and which is at least partly coated with a phosphor which radiates UV light upon excitation by an excitation radiation produced in the discharge vessel so as to utilize a desired spectral range.
Abstract:
A metal M is chosen from the group formed by yttrium, aluminum and lanthanum, and a watery solution of a complex of M and an organic chelating agent is added to a suspension of luminescent material, which causes a layer of M2O3 to be deposited on the luminescent material, which is them separated, dried and fired.
Abstract translation:金属M选自由钇,铝和镧形成的组,并且将M和有机螯合剂的络合物的水溶液加入到发光材料的悬浮液中,这使得一层M 2 O 3沉积在 它们分离,干燥和烧制。
Abstract:
A luminescent material is dispersed in a watery solution of sodium polyphosphate, a watery solution of a nitrate of the metal M is added, after which the luminescent material is separated, dried and fired. The metal is chosen from the group consisting of Ca, Sr, and Ba, whereby a protective layer of metal polyphosphate is formed on the luminescent material.
Abstract:
A luminescent material coated with a crystalline layer of a metal oxide M.sub.2 O.sub.3 wherein a metal M is chosen from the group formed by Y and Al is shown. According to this method the luminescent material is first introduced into a solution of a salt of the metal M, then a compound of the metal M is deposited on the luminescent material through homogeneous precipitation, and subsequently the luminescent material is separated from the solution, dried, and heated. It is achieved thereby that the luminescent material will absorb mercury to a low degree only, and that accordingly the color point of a low-pressure mercury discharge lamp whose luminescent layer comprises a luminescent material coated in accordance with the invention only shows a small shift as the lamp ages.
Abstract translation:涂覆有金属氧化物M 2 O 3的结晶层的发光材料,其中金属M选自由Y和Al形成的基团。 根据该方法,首先将发光材料引入到金属M的盐溶液中,然后通过均匀沉淀将金属M的化合物沉积在发光材料上,随后将发光材料与溶液分离,干燥 ,并加热。 由此实现了发光材料仅仅以低的程度吸收汞,因此,发光层包括根据本发明涂覆的发光材料的低压汞放电灯的色点仅显示出小的偏移 灯老化
Abstract:
A highly safe fluorescent lamp is disclosed, in a mixed layer having couplings of phosphors and a metal oxide such as yttrium oxide is formed on the inner surface of a glass bulb. The couplings of the mixed layer strongly couples the grains arranged in crosslinked state between the phosphor grains of the phosphor material. A first thin film of the metal oxide is formed between the glass bulb and the mixed layer. A second thin film of the same metal oxide is formed on the inner surface of the mixed layer nearer to the bulb center. The amount of mercury sealed in the glass bulb thus is reduced, thereby minimizing the mercury consumption which has so far been the problem against environmental protection.