摘要:
A discharge lamp lighting apparatus comprises a discharge lamp and a power supply the discharge lamp can be switched between a steady power lighting mode, which drives the discharge lamp by an alternating current in which first and second polarities are repeated by turns, and a low power lighting mode, which drives the discharge lamp at 50% or less of the alternating current of the steady power lighting mode, and the alternating current comprises a first time unit, which has a time width t1, and second time unit, which has a time width t2, that are repeated by turns to drive the discharge lamp.
摘要:
A discharge lamp lighting apparatus comprises a discharge lamp and a power supply the discharge lamp can be switched between a steady power lighting mode, which drives the discharge lamp by an alternating current in which first and second polarities are repeated by turns, and a low power lighting mode, which drives the discharge lamp at 50% or less of the alternating current of the steady power lighting mode, and the alternating current comprises a first time unit, which has a time width t1, and second time unit, which has a time width t2, that are repeated by turns to drive the discharge lamp.
摘要:
The present invention relates to a high pressure discharge lamp that includes a pair of electrodes, which face each other in an electric discharge space. Further, an electrode axis of one of the electrodes is joined to a metallic foil in a sealing portion, and two or more grooves are formed in an axis direction on a portion corresponding to the sealing portion on the electrode axis. Furthermore, a remaining portion that lacks grooves is left on the electrode axis in a metallic foil side thereof, and the metallic foil side ends of the grooves are not aligned with each other in the axis direction thereof.
摘要:
The present invention relates to a high pressure discharge lamp that includes a pair of electrodes, which face each other in an electric discharge space. Further, an electrode axis of one of the electrodes is joined to a metallic foil in a sealing portion, and two or more grooves are formed in an axis direction on a portion corresponding to the sealing portion on the electrode axis. Furthermore, a remaining portion that lacks grooves is left on the electrode axis in a metallic foil side thereof, and the metallic foil side ends of the grooves are not aligned with each other in the axis direction thereof.
摘要:
The present invention relates to an extra-high pressure mercury lamp in which 0.15 mg/mm3 or more of mercury is filled as light emitting material, and a pair of electrodes facing each other is disposed in an arc tube, in which at least one of the pair of electrodes has an axis portion, and a thick diameter portion formed by winding a coil around the axis portion, the thick diameter portion comprising a winding portion provided on the axis portion, and a curvature portion which is integrally formed with the axis portion, and has a curved portion at least in part around a circumference of the axis portion between the axis portion and the curvature portion, and the curved portion connected to a back end portion of the winding portion.
摘要翻译:本发明涉及作为发光材料填充0.15mg / mm 3以上的汞的超高压汞灯,并且在电弧管中设置一对电极,其中,至少一个 所述一对电极具有轴部,所述厚直径部通过将线圈卷绕在所述轴部上而形成,所述厚直径部包括设置在所述轴部上的卷绕部,以及与所述轴部整体形成的曲率部 并且在所述轴部与所述曲率部之间至少部分地围绕所述轴部的圆周形成弯曲部,所述弯曲部与所述卷绕部的后端部连接。
摘要:
To devise a light source device with a low price and from which a sufficient amount of light can be obtained, in a light source device having a reflector and a discharge lamp, a hermetically sealed portion of the lamp is directly joined to a part of a neck region of the reflector with a processed portion being formed for setting the positional relationship between the lamp and reflector.
摘要:
A light source apparatus comprises a mercury lamp having an arc tube having a light emitting portion and sealing portions extending from both sides of the light emitting portion, respectively and, a concave reflection mirror which reflects light emitting from the discharge lamp in a predetermined direction, and a front glass made from light transmissive material, which is arranged in an opening side of the concave reflection mirror, wherein a reflective surface of the concave reflection mirror is made of metal, and, wherein a reflective film which reflects infrared light and ultraviolet light, is formed on a surface of the front glass, and the infrared light and ultraviolet light which emitted from the extra-high mercury discharge lamp are reflected on the front glass so as to be returned to part of electrodes of the extra-high pressure mercury lamp or between the electrodes.
摘要:
To stabilize the arc bright point position of a discharge lamp and suppress deformation of an electrode when an ultrahigh-pressure discharge lamp is operated with extremely low electric power, the lamp is operated by supplying power from a power supply device having a step-down chopper circuit and a full bridge circuit, a rectangular wave alternating current being supplied when it is operated with rated power or dimmed power (about 60 to 80% of rated power), a DC current being supplied during standby power operation of at most 0.5×P (W) with respect to the maximum operating power P (W). Moreover, the high-pressure discharge lamp light source device may be mounted on a projector for projecting images and the mode being changed to standby power operation when there is no change in an image signal, for example, for a prescribed period of time.
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.
摘要:
A high pressure discharge lamp lighting apparatus that comprises a power supply apparatus that supplies a rectangle wave alternating current to the high pressure discharge lamp for lighting, such that when the lamp is operated by electric power of 0.5×P (W) or less, when maximum operation power P (W) in a steady lighting state except an initial lighting period that is immediately after starting, where a first polarity driving period of a rectangle wave alternating current is Ta (seconds), and where a second polarity driving period is Tb (seconds) an operation is performed so that the second polarity driving period Tb is 5 ms or less (Tb≦5 ms) and a ratio Tb/Ta of these two driving periods is 0.1 or less (Tb/Ta≦0.1).