摘要:
A high pressure discharge lamp light source device is provided having a quartz glass discharge vessel enclosing two opposed electrodes that are spaced apart by at most 2.0 mm, each electrode having a projection formed at a tip end thereof, at least 0.20 mg/mm3 of mercury and a halogen; and a power supply device for supplying alternating current to the lamp, The power supply device is adapted to switch between a nominal electric power lighting mode and a low electric power lighting mode having a defined current value in a range of 40 to 70% of a nominal electric power consumption. In the low power mode, the power supply alternately supplies a base current in a range between 100 Hz and 5 kHz a boost current having a higher current value than that of the base current.
摘要翻译:提供一种高压放电灯光源装置,其具有包围间隔开至多2.0mm的两个相对电极的石英玻璃放电容器,每个电极具有形成在其末端的突起,至少0.20mg / mm 3的汞 和卤素; 以及用于向灯提供交流电的电源装置。电源装置适于在具有限定电流值的标称电力照明模式和低电力照明模式之间切换,所述限定电流值在40至70%的范围内 标称电力消耗。 在低功率模式下,电源交替地在100Hz和5kHz之间的范围内提供具有比基极电流更高的电流值的升压电流的基极电流。
摘要:
To positionally stabilize the arc spot in a super-high pressure discharge lamp which is filled with at least 0.20 mg/mm3 of mercury and to prevent the formation of so-called flicker, in an operation device having a high pressure discharge lamp and a feed device, the feed device of the high pressure discharge lamp supplies a frequency in the range from 60 Hz to 1000 Hz as the stationary operating frequency and a low frequency, in a frequency range of from 5 Hz to 200 Hz is inserted which has an inserted length of from one half period to five periods, and an inserting period of from 0.01 seconds to 120 seconds, into the alternating current of the stationary operating frequency. Furthermore, the parameters of the low frequency are changed according to changes of the operating voltage of the discharge lamp.
摘要翻译:为了在填充有至少0.20mg / mm 3汞的超高压放电灯中定位稳定电弧点,并防止形成所谓的闪烁,在具有 高压放电灯和馈电装置,高压放电灯的馈电装置在从5Hz到1000Hz的频率范围内将频率范围从5Hz到1000Hz作为固定工作频率和低频率,频率范围为5Hz至 插入200Hz,其具有从固定工作频率的交流电中的一半周期到五个周期的插入长度以及从0.01秒到120秒的插入周期。 此外,低频的参数根据放电灯的工作电压的变化而变化。
摘要:
To prevent lamp extinction during dead time of an inverter circuit of a full bridge system, to reduce delays of the rising time and the falling time of rectangular waves which have been output by the inverter circuit and to prevent formation of a phenomenon of momentary darkening of the radiant light, the discharge lamp is operated with an alternating current with rectangular waves which is produced by an inverter circuit of a full bridge system. When the inverter circuit of the full bridge system is driven a dead time is taken in which all switching devices are turned off. In the rear stage of the inverter circuit of the full bridge system, there is an inductance. The value of the inductance is fixed such that LL≧VL/IL·Td (VL being the luminous voltage of the discharge lamp, IL being the current and Td the dead time). Current can flow in the discharge lamp during the dead time by the energy stored in this inductance.
摘要:
To provide a high-pressure mercury lamp capable of shortening the light output rise time and of preventing glow discharge that occurs when the lamp is lighted, a high-pressure mercury lamp (1) luminescent device with a pair of electrodes (6, 7) placed opposite one another within a discharge vessel (2) made of quartz glass with seals (4, 5) formed on both ends and at least 0.15 mg/mm3 of mercury sealed into the discharge vessel, has a device (11, 12) for increasing the temperature of the outer wall of the luminescent portion (3) of the discharge vessel (2) to at least 100° C. before the high-pressure mercury lamp is lit.
摘要:
The invention relates to a high pressure mercury lamp which is operated with an internal pressure at least equal to one hundred and some dozen atm and in which the thermal load and gas convection are considered. A fused silica glass discharge vessel is filled with mercury in an amount at least equal to 0.15 mg/mm3 and rare gas. The length of the electrode which projects into the discharge vessel and which is positioned at the top is greater than the length of the electrode which projects into the discharge vessel and which is positioned at the bottom. Where the lamp wattage is W (W) and the maximum value of the inside diameter in the direction perpendicular to the axis which extends between the pair of electrodes within the discharge vessel is D (mm), the following conditions are met: 0.35×(W)½≦L1≦0.69×(W)½ L2≦0.76×(W){fraction (1/2.64)} and at the same time (2.50)e0.0022W≦D≦(5.0)e0.0034W.
摘要翻译:本发明涉及一种高压汞灯,其操作的内部压力至少等于一百一十个大气压,其中考虑热负荷和气体对流。 熔融石英玻璃放电容器中填充有至少等于0.15mg / mm 3的汞和稀有气体。 突出到放电容器中并且位于顶部的电极的长度大于突出到放电容器中且位于底部的电极的长度。 在灯功率为W(W)的情况下,在与放电容器内的一对电极之间延伸的轴线垂直的方向上的内径的最大值为D(mm)时,满足以下条件: 同时
摘要:
A metal halide lamp in which rare earth halides are encapsulated and the occurrence of milky cloudiness is suppressed to achieve a prolongation of the service life of the lamp. To achieve this result, inert gas, mercury, indium halide, cesium halide, and rare earth halides are encapsulated in an emission part, with the encapsulation amount of the indium halide being from 0.8 micromole to 8.0 micromole/cm.sup.3 of tube volume, and the lamp is operated with an essentially horizontal arc axis using a direct current. Furthermore, iodine and bromine are contained in the halogen which forms the halides, and there is a ratio of the iodine atom number to the total halogen atom number is greater than or equal to 50%.
摘要:
A short arc type discharge lamp wherein a cathode and an anode are arranged opposite to each other in an interior of a light emitting tube and said cathode comprises a main part made from tungsten and a tip end part made from thoriated tungsten, wherein thorium oxide particles having been peripherally coated with thorium are contained in the tip end part of said cathode.
摘要:
A short arc type discharge lamp includes a cathode and an anode arranged inside an arc tube to face each other. The cathode comprises a main body portion made of tungsten and an emitter portion made of thoriated tungsten that is joined at the tip of the main body portion, where a metal oxide other than thorium (Th) is contained in the main body portion of the cathode, and a tungsten carbide layer is formed on the metal oxide.
摘要:
A discharge lamp with excellent arc stability and excellent durability in which the use level of thoriated tungsten is restrained has an anode and a cathode in the interior of a discharge vessel, wherein said cathode is made up from a thoriated tungsten part with a tungsten filling ratio of at least 90 vol.-% and a main body part connected to said thoriated tungsten part and consisting of pure tungsten, wherein a ratio ST/S of a side surface area ST of said thoriated tungsten part and a side surface area S of said cathode is in a range of from 0.005 to 0.15, with the proviso that, in case the cathode has a length in the direction of the cathode axis which exceeds twice the maximum diameter of the cathode, a side surface area S is used for calculating the ratio ST/S which corresponds to the side surface area where the distance along the cathode axis from a tip end adjacent to the anode is twice the maximum diameter of the cathode.
摘要翻译:具有优异的电弧稳定性和优异耐久性的放电灯,其中钍钨的使用水平被限制在放电容器的内部具有阳极和阴极,其中所述阴极由具有钨填充比的钍钨部分 至少90体积%,以及连接到所述钍钨部分并由纯钨组成的主体部分,其中所述钍钨部分的侧表面积ST和所述钍钨部分的侧表面积S的比率ST / S 阴极在0.005至0.15的范围内,条件是在阴极的长度方向上阴极轴线的长度超过阴极最大直径的两倍的情况下,侧面积S用于计算 与沿着阴极轴线距离与阳极相邻的尖端的距离为两倍于阴极最大直径的侧表面积的比率ST / S。
摘要:
A discharge lamp lighting apparatus includes a discharge container, a pair of electrodes and a power supply apparatus. An alternating current of a frequency, which is lower than stationary frequency, is inserted periodically into the alternating current of stationary frequency. When a lighting current value of the discharge lamp is smaller than a predetermined lower limit, the frequency is set as predetermined minimum frequency. When the lighting current value of a discharge lamp is larger than a predetermined maximum value, the frequency is set as predetermined maximum frequency. When a lighting current value of the discharge lamp is between the lower limit and the maximum value, the frequency is set as a selected frequency corresponding to the lighting current value. The selected frequency increases according to an increase of frequency change as a lighting current value increases.