摘要:
A metal halide lamp in which the radiant efficiency is not adversely affected, in which outstanding color reproducibility is obtained, and which is suitable for a light source of an OHP or a direct projector is achieved, according to the invention, by the fact that, within an arc tube provided with a pair of electrodes, together with mercury and a starting rare gas, halides of dysprosium (Dy), yttrium (Y) and cesium (Cs) are encapsulated with the molar ratio of the encapsulated metals Dy to Y is being fixed in the range of 0.3.ltoreq.Dy/Y.ltoreq.1.0. In this way the green portion to which there is a sensitive visual reaction is reduced, the blue portion increased, and thus the color reproducibility is increased.
摘要翻译:根据本发明,实现了其中辐射效率没有受到不利影响的金属卤化物灯,其中获得了出色的再现性,并且适用于OHP或直接投影仪的光源, 在设置有一对电极的电弧管中,连同汞和起始稀有气体,包封的金属Dy与Y的摩尔比包围镝(Dy),钇(Y)和铯(Cs)的卤化物 固定在0.3 Dy / Y <1.0的范围内。 以这种方式,具有敏感视觉反应的绿色部分减少,蓝色部分增加,因此颜色再现性增加。
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 reflector discharge lamp in which a concave reflector has a front cover and in which a foil seal arrangement of hermetically sealed portions of a discharge lamp mounted therein can be advantageously prevented from reaching a high temperature. This is achieved by the discharge lamp being arranged such that a longitudinal axis of the discharge lamp coincides with the optical axis of the concave reflector by the end area of one of the hermetically sealed portions of the discharge lamp being located in an area of the concave reflector which is opposite the front cover. The end area of the other hermetically sealed portion projecting at least partially through and beyond an aperture in the front cover.
摘要:
A metal halide lamp in which no color shadowing occurs on the light acceptance surface and which at the same time emits with sufficient brightness is achieved according to the invention by encapsulating lutetium halide and one or more of the metal halides from groups A, B and C in an arc tube of a metal halide lamp together with a mercury halide: Group A: dysprosium halide, holmium halide, erbium halide, thulium halide Group B: cerium halide, praseodymium halide, neodymium halide Group C: cesium halide.