摘要:
A high pressure metal vapor discharge lamp including an arc tube having at least a main electrode at each end thereof, a fill sealed in the arc tube, including mercury, metal halide and starting gases selected from the group consisting of Ar, Kr and Xe, a radioactive source material, impregnated with a radioactive substance having a half-life less than 1.times.10.sup.4 years, sealed in the arc tube and a circuit including a conventional low voltage mercury lamp ballast and a glow starter for starting the arc tube.
摘要:
A high pressure metal vapor discharge lamp including an arc tube having opposed ends at which are provided respective main electrodes and a fill including mercury and a starting gas, a radioactive source material including a radioactive substance having a half-life less than 1.times.10.sup.4 years sealed in the arc tube, an outer tube enclosing the arc tube and a circuit for starting the arc tube.
摘要:
A metal halide lamp comprises a light-transmitting discharge vessel having a discharge space portion, a sealed portion, and a pair of electrodes projecting into the discharge space. The discharge vessel is constructed and arranged to have a D/L ratio being in a range of about 0.25 to about 1.5 and a t/L ratio being in a range of about 0.16 to about 1.1, wherein L is an interspace of tips of the electrodes, D is a maximum inner diameter of the discharge vessel, and t is a maximum wall thickness of the discharge space portion. An ionizable filling contains a rare gas and a metal halide including at least sodium (Na) or scandium (Sc) and does not substantially include mercury (Hg). Each of conductive wires is connected electrically to the electrodes extending from the discharge vessel. The metal halide lamp may be used for a metal halide lamp apparatus or a vehicle lighting apparatus.
摘要:
[Problems] To provide a mercury-free metal halide discharge lamp and a metal halide discharge lamp system for lighting the same of the dc lighting type with reduced inter-electrode color temperature difference.[Means of Solving Problems] A metal halide discharge lamp includes a fire-resistant and light-transmitting hermetic vessel 1, a pair of electrodes 2A, 2B sealed within the hermetic vessel 1, and a discharge medium containing a halide and a rare gas and essentially not containing mercury and sealed within the hermetic vessel 1, wherein a polarity of a lamp current flowing in the hermetic vessel is a single polarity not changing with time and the lamp is lighted so that a discharge arc of the discharge medium is corrected in a direction of a straight line connecting the electrodes using an acoustic resonance phenomenon.
摘要:
A glow starter comprises a discharge vessel, filled with a filling including a rare gas, substantially transmitting ultraviolet rays of about 300 nm or less. A pair of electrodes, which are arranged in the discharge vessel, is adapted and arranged to touch each other by being heated by a glow discharge. The glow starter may be used for a high pressure discharge lamp, a high pressure discharge lamp apparatus, or a lighting fixture.
摘要:
A metal halide lamp comprising a luminous sealed tube, a pair of electrodes housed in the luminous tube and rare gas, mercury and metal halide sealed in the luminous tube, characterized in that boron or a boron compound is sealed in the luminous sealed tube in such a manner as not to contact the surfaces of the electrodes. The metal halide lamp is advantageous in that the electrodes are prevented from corrosion and that the blackening with time of the inner wall of the luminous tube is suppressed.
摘要:
A metal halide discharge lamp with which essentially permits disusing mercury is provided. The metal halide discharge lamp comprises a refractory and transparent hermetic vessel, a pair of electrodes fixed to the hermetic vessel, and a discharge medium sealed in the hermetic vessel and containing a first halide, a second halide, and a rare gas. The first halide is a halide of metal which achieves a desired light emission. The second halide has a relatively high vapor pressure, being at least one halide of metal which is unlikely to emit a visible light compared with the metal of the first halide and acts as a buffer gas.
摘要:
A metal halide discharge lamp which essentially permits disusing mercury is provided. The metal halide discharge lamp comprises a refractory and transparent hermetic vessel, a pair of electrodes fixed to the hermetic vessel, and a discharge medium sealed in the hermetic vessel and containing a first halide, a second halide, and a rare gas. The first halide is a halide of a metal which achieves a desired light emission. The second halide has a relatively high vapor pressure, being at least one halide of metal which is unlikely to emit a visible light compared with the metal of the first halide and acts as a buffer gas.
摘要:
To provide, in a special situation of a mercury-free lamp in which a luminance flicker tends to occur unlike a mercury-containing lamp, a metal halide lamp having an electrode structure modified so as to suppress the luminous flicker that is suitably used as an automotive headlamp, and an automotive headlamp apparatus incorporating the same. A metal halide lamp includes: a hermetic vessel 1 which is fire resistant and translucent; a pair of electrodes 3, 3 sealed in the hermetic vessel 1 with facing each other at a distant of 5 mm or less, the electrodes each having a shaft part 3a having a diameter of 0.25 mm or more and a tip 3b, which originates an arc, having a curved surface having a radius of one-half or less of the diameter of the shaft part; and a discharge medium essentially containing no mercury, sealed in the hermetic vessel 1, and containing halides of metals including a light-emitting metal in an amount of 0.005 mg/mm3 of an inner volume of the hermetic vessel or more and a xenon gas at 5 atmospheres or higher at a temperature of 25° C., in which the metal halide lamp is turned on with a lamp power of 60 W or lower in a stable state.
摘要翻译:为了在不含汞的灯的情况下提供不发生亮度闪烁的无汞灯的特殊情况,具有修改电极结构的金属卤化物灯,以抑制适合用作闪光灯的发光闪烁 汽车前照灯,以及包括其的汽车前照灯装置。 金属卤化物灯包括:密封容器1,其耐火和半透明; 密封在密封容器1中的一对电极3,3彼此面对距离为5mm或更小,每个电极具有直径为0.25mm以上的轴部3a和尖端3b,该部分起始于 弧形,具有半径为所述轴部的直径的一半以下的曲面; 和基本上不含汞的放电介质,密封在密封容器1中,并且含有包含密封容器的内容积的0.005mg / mm 3以上的发光金属的金属的卤化物或更多,以及 在25℃的温度下在5个大气压以上的氙气,其中金属卤化物灯在稳定状态下以60W或更低的灯功率打开。
摘要:
A metal halide discharge lamp which essentially permits disusing mercury is provided. The metal halide discharge lamp comprises a refractory and transparent hermetic vessel, a pair of electrodes fixed to the hermetic vessel, and a discharge medium sealed in the hermetic vessel and containing a first halide, a second halide, and a rare gas. The first halide is a halide of a metal which achieves a desired light emission. The second halide has a relatively high vapor pressure, being at least one halide of a metal which is unlikely to emit a visible light compared with the metal of the first halide and acts as a buffer gas.