Abstract:
A method for manufacturing a mesh screen of an electrodeless lighting system, capable of intercepting microwave and passing light generated in a bulb, including a mesh screen forming step for forming a mesh screen to have a mesh structure, a first plating step for plating first metal substance on the surface of the mesh screen, a vacuum heat-treating step for vacuum-heat-treating the mesh screen under the condition that the temperature is risen to a predetermined degree, a second plating step for plating second metal substance on the surface of the mesh screen and a photocatalytic coating step for coating photocatalytic substance on the surface of the mesh screen, can improve plating characteristic of the mesh screen, strengthen the maintenance strength, lengthen the life span of the mesh screen and improve the optical character.
Abstract:
An article treatment system and method utilizing an air-cooled lamp and having reduced cooling requirement. A power supply responds to a sensor sensing the presence of an article at an article treating location by providing power to an air-cooled lamp, causing the lamp to project radiation onto the article at a radiation level sufficient to effectively treat the article. An air blower blows air onto the lamp, and a blower driver is responsive to the level of the power being provided to the lamp to drive the air blower at a speed blowing air onto the lamp with an air pressure having a non-linear relationship with the power level.
Abstract:
In an electrodeless discharge lamp using microwave energy, an electrodeless discharge lamp using microwave energy includes a resonator having an opening portion at the side and forming a resonance region at which microwave energy is resonated, a magnetron having an antenna in order to output microwave energy, a coaxial wave guide installed to the other side of the resonator, transmitting microwave energy from the magnetron to the resonator and having an internal guide extended in the projecting direction of the antenna of the microwave generator, a bulb placed inside the resonator and having enclosed fluorescent materials generating lights by the microwave energy, and a mesh member installed to the opening portion of the resonator, preventing leakage of microwave energy and passing lights generated in the bulb. Accordingly, by reducing a size of a lamp, it can be easily applied to a low-output system required a compact construction such as a projection TV, etc.
Abstract:
A reflector (42) for use in a microwave excited ultra violet lamp system (10) having a plasma lamp bulb (20). The reflector (42) includes a pair of longitudinally extending reflector panels (46) that are mounted in opposing, i.e., mirror facing relationship, and in space relationship to the plasma lamp bulb (20). A longitudinally ex-tending intermediate member (52) is mounted in spaced relationship to the pair of reflector panels (46) and to the plasma lamp bulb (20). The reflector panels (46) and the intermediate member (52) form a pair of longitudinally extending slots (64) that are operable to pass air toward the plasma lamp bulb (20) to envelop the bulb (20) effectively entirely about its outer surface. Alternatively, the pair of reflector panels (46e) are connected to longitudinally extending edges (58e) of the intermediate member (52e). The intermediate member (52e) includes multiple apertures (78) formed therethrough that are operable to pass air toward the bulb (20) to envelope the bulb (20) effectively entirely about its outer surface. A method of cooling a plasma lamp bulb (20) in a microwave excited ultravoilet lamp system (10) is also disclosed.
Abstract:
To provide a lamp device that is a point light source, that withstands high pressure, and that produces high-intensity light, a high-frequency excitation point light source lamp device has been devised having a discharge vessel made of a transparent, non-conductive material and having an expanded part forming a discharge space and with tubules joined to the expanded part; at least one discharge concentrator, that concentrates the electrical field within the discharge space of the expanded part, which is supported in a tubule with an end within the discharge space; and a high-frequency supply external to the lamp for providing excitation energy that excites a discharge of the concentrator.
Abstract:
An electrodeless lamp includes a stationary bulb (10) containing a fill for producing a discharge, the fill has a primary radiating material which ordinarily produces an unstable discharge in the absence of bulb rotation. The fill further includes an alkali metal in an amount sufficient to stabilize the discharge without bulb rotation. The alkali metal may be, for example, cesium bromide. Preferably, the fill is excited by a non-stationary electric field (E, E1) such as, for example, a circular polarized electric field.
Abstract:
A discharge lamp for providing visible radiation includes a lamp envelope which is made of light transmissive material a fill in the envelope including either calcium halide or strontium halide together with either elemental sulfur or elemental selenium in gaseous form which is obtainable when the fill is excited by sufficient power in operation, in an amount such that the excited fill emits a discharge of visible radiation from the fill with substantially all of the radiation being molecular radiation which is emitted in the visible region of the spectrum. The calcium halide or strontium halide operates at a vapor pressure which provides a significant amount of radiation in the red region of the spectrum therefrom and the overall spectrum has a color rendering index of about 87 or more.
Abstract:
A discharge lamp bulb includes a light transmissive envelope and at least one conductive fiber disposed on a wall of the envelope, where the fiber has a thickness of less than 100 microns. The lamp may be either electrodeless or may include internal electrodes. Suitable materials for the fiber(s) include but are not limited to carbon, silicon carbide, aluminum, tantalum, molybdenum, platinum, and tungsten. Silicon carbide whiskers and platinum coated silicon carbide fibers may also be used. The fiber(s) may be aligned with the electrical field, at least during starting. The lamp preferably further includes a protective material covering the fiber(s). For example the protective material may be a sol gel deposited silica coating. Noble gases inside the bulb at pressures in excess of 300 Torr can be reliably ignited at applied electric field strengths of less than 4null105 V/m. Over 2000 Torr xenon, krypton, and argon respectively achieve breakdown with an applied field of less than 3null105 V/m.
Abstract translation:放电灯泡包括透光外壳和设置在外壳壁上的至少一个导电纤维,其中纤维的厚度小于100微米。 灯可以是无电极的,也可以包括内部电极。 用于纤维的合适材料包括但不限于碳,碳化硅,铝,钽,钼,铂和钨。 也可以使用碳化硅晶须和铂包覆的碳化硅纤维。 至少在启动期间,纤维可以与电场对准。 灯优选地还包括覆盖纤维的保护材料。 例如,保护材料可以是溶胶凝胶沉积二氧化硅涂层。 当施加的电场强度小于4×105 V / m时,灯泡内的超过300乇的气体可以被可靠地点燃。 超过2000乇,氪和氩分别在小于3×105 V / m的施加场分别实现击穿。
Abstract:
The invention is a microwave powered lamp (100) and an assembly (300) of a microwave powered lamp. A microwave powered lamp in accordance with the invention includes a housing (22) containing a water cooled magnetron (110), the water cooled magnetron providing microwaves to a microwave excited bulb, the microwave excited bulb 16 providing light from the housing; an air source (18), coupled to the housing, which blows air (20) to the water cooled magnetron and the lamp with the air providing cooling to the bulb to control operation temperature thereof; a heat exchanger (102), disposed in the housing, with the air blown from the air source contacting the heat exchanger, the heat exchanger having a portion contacted by water heated by operation of the water cooled magnetron with the air blown from the air source cooling the heated water, and a water circulation circuit (104), coupled to the water cooled magnetron and the portion of the heat exchanger, which circulates heated water from the water coaled magnetron to the portion of the heat exchanger and cooled water from the portion of the heat exchanger back to the water cooled magnetron.
Abstract:
Apparatus for radiating energy at one or more predetermined wavelength comprising: a housing (4), a source of microwave energy coupled to and located outside the housing and a window forming part of the wall of the housing, the window being formed from a material which is substantially transparent to radiation at the or each predetermined wavelength and at the wavelength of the microwave source, the window including gas of a predetermined composition at a predetermined pressure contained in a gas-tight enclosure (2) defined by the window material, the gas composition being chosen to emit energy at the or each predetermined wavelength in response to microwave energy from the housing (4) impinging generally on an inner surface of the window, the window being arranged substantially to be opaque at the wavelength of the microwave energy and being arranged to provide an unobstructed radiating path from its outer surface for the energy of the or each predetermined wavelength.