Abstract:
A high-pressure discharge lamp may include an elongated ceramic discharge vessel, wherein an electrode projects into the discharge vessel in each end area, wherein the electrode is attached to a bushing arranged in a capillary tube, wherein the internal diameter is reduced to at most 85% of the internal diameter of the elongated ceramic discharge vessel in the end area, such that an end surface remains at the end of the vessel, which has an internal diameter of at least 15% of the internal diameter, wherein a gap of most 20 μm remains between the bushing and the inner wall of the capillary, wherein the ratio between the areas which are formed by the internal diameter of the capillary and the diameter of the end surface is in the range from 0.06 to 0.12.
Abstract:
A discharge lamp may be formed with both galvanic and dielectric electrod The relative discharges due to the currents between the differing electrodes may be adjusted to effect the optical spectrum of the radiation emitted by the lamp.
Abstract:
High pressure discharge lamp (20) with improved ignitability. A spiral pulse generator (1) that is directly mounted inside the outer piston (12) of the lamp is used for igniting the high pressure discharge lamp.
Abstract:
The invention relates to a mercury-free low pressure discharge lamp with a discharge vessel having an ionizable filling. The surface temperature of the discharge vessel, and thus the temperature of the ionizable filling, can be adjusted at least in some sections such that an emitting substance can produce the radiation required for the excitation of the luminescent substance. The temperature of the fluid is preferably adjusted in a temperature control circuit, using a temperature sensor, a pump and a heating device.
Abstract:
The invention relates to a high-pressure discharge lamp, having a ceramic discharge vessel comprising a capillary (5) on the end. An electrode system is incorporated into the capillary, said electrode system having a three-part bushing (6). The bushing comprises a first, front-end part (15) in the shape of a pin, a center part comprising a core pin (16) and a Mo-winding (17), and an outer part that is a niobium pin (18). Each of the three parts has a different gap width.
Abstract:
A high-pressure discharge lamp may include a ceramic discharge vessel that encloses a discharge volume and at whose ends capillaries are fitted, an electrode system being led through in each capillary and sealed there, use being made of at least one electrode system that is based on tungsten and has an electrode head made from tungsten as first segment and a shaft made from tungsten as second segment, as well as a multipartite leadthrough having a pin projecting on the outside at the end of the capillary, wherein the multipartite leadthrough has a central cylindrical leadthrough part made from tungsten as third segment of the electrode system inside the capillary, which adjoins the second segment, as well as a fourth multipartite segment inside the capillary, consisting of a core pin that is made from tungsten, has a diameter of at most 300 μm and is partially surrounded by a tubular sleeve, the pin being connected to the projecting pin, a gap remaining between the sleeve and projecting pin, and the end of the capillary being sealed by means of solder glass up to at least the beginning of the sleeve.
Abstract:
The high pressure discharge lamp is fitted with a discharge vessel that has an inside volume with an inside length IL and a maximum inside diameter ID, and that is subdivided into a middle region of constant inside diameter ID and two end regions of variable inside diameter, an electrode projecting into the discharge vessel in the end region in each case. In addition, the discharge vessel has an aspect ratio of 2.5 to 8, preferably 3 to 6, the end region exhibiting a given length LRD in which the inside diameter is reduced to at least 85% of ID.
Abstract:
The lamp uses a sealing system with a ceramic supporting element (17) having a short length LA together with a W-Nb leadthrough part (18, 19, 20) and a specially adapted glass solder (21), which is based on an Al2O3 rare earth oxide system. In this case, the W part is accommodated in the supporting part over a length LW of 1 mm, and the aspect ratio LW/DUW, formed from the length LW and the diameter DUW of the W part, is at least 10.
Abstract translation:该灯使用具有陶瓷支撑元件(17)的密封系统,该陶瓷支撑元件(17)与W-Nb引线部分(18,19,20)和特别适合的玻璃焊料(21)一起具有短长度LA,其基于Al 2 O 3 稀土氧化物体系。 在这种情况下,W部分被容纳在长度LW为1mm的支撑部分中,并且由W部分的长度LW和直径DUW形成的纵横比LW / DUW为至少10。
Abstract:
The operating method is based on the simultaneous application of FM and AM. In this process, the fundamental frequency of the AM is derived from at least one, preferably the second, longitudinal mode. In continuous operation of the lamp, the color temperature is set for a prescribed power by setting the AM degree controllably.
Abstract:
The discharge volume has an internal length L and a maximum diameter D at its center, with the discharge vessel being equipped with a light-emitting filling and with two electrodes at the ends of the discharge vessel, with the lamp being operated by means of high frequency such that an acoustic longitudinal mode is formed, with the wall thickness varying along the length L of the discharge volume, with the wall thickness S being thinnest at the center of the discharge vessel, while it is at least 1.2 S at an optimum point Popt, with the optimum point in each case being at a distance of {fraction (7/24)} L from the end of the discharge vessel.