Abstract:
A low-pressure electric-discharge lamp is of a double-tube structure in which a gas is sealed into an outer tube of which an end portion is closed, and an inner tube defining an electric discharge path is supported by an end plate so that it can communicate with the inside of the outer tube and has electrodes housed therein. The end portions of the inner tube with the electrodes therein are secured to the end plate by a bonding agent, while part of the inner tube away from the end portions with the electrodes housed therein is adapted to abut against the end plate so as to be supported thereby. Thus it is easy to conduct the operation of securing the inner tube to the end plate. The assembled electric-discharge lamp is lightweight and has an inner tube which is mechanically stable.
Abstract:
Es wird ein Quecksilberniederdruckamalgamstrahler mit einem zylindrischen, zwei Enden aufweisenden und für UV-Strahlung durchlässigen Kolben vorgeschlagen, bei dem Ende des Kolbens die Elektroden trägt und das andere Ende des Kolbens mit dem Amalgamdepot versehen ist. Auf diese Weise wird ein insbesondere bei hängender Montage besonders robuster Strahler mit kompakten Abmessungen erreicht.
Abstract:
A gas discharge lamp (1) comprising an outer envelope (2) housing an inner tube (5), the gas in the inner tube (5) sharing a common atmosphere with the gas in the outer envelope (2), first and second electrodes (AI, K) between which a discharge path is defined, the first electrode (AI) being located within the inner tube (5) and the second electrode (K) being located outside the inner tube (5), the inner tube (5) bounding at least part of the discharge path.
Abstract:
A photon source comprises a plasma source (10) with at least one cathode (11) and at least one anode (12), between which a system of one or more mutually separated cascade plates (13) is placed. The cascade plates are provided with at least one passage opening (15), wherein corresponding passage openings of successive cascade plates He at least substantially mutually in line. The plasma source comprises a gas inlet (21) for admitting a gas to be excited at an inlet pressure. An electric power source (40) is connected between the cathode and the anode. The power source is able and adapted to generate a modulated current The gas inlet is coupled to gas supply means (25,26) which are able and adapted to admit the gas to be excited at a modulated, sub- atmospheric to above-atmospheric inlet pressure.
Abstract:
Disclosed is a system for inspecting an object. Such system comprises; a) an irradiation system for irradiating the object to be inspected, said irradiation system comprising a radiation source, b) an objective, imaging the irradiated object onto an image sensor, and c) an image sensor for transforming the radiation coming from the object to be inspected into a detectable signal. The radiation source comprises; A) at least one cathode, B) at least one anode, C) one or more plates, positioned in between said cathode(s) and said anode(s), and being electrically substantially insulated, wherein each plate comprises at least one hole, aligned in such a way that a continuous path is created between cathode and anode over which a discharge can extend.
Abstract:
A mercury-free lamp including: a glass bulb (4) that is filled with a rare gas; a first internal electrode unit (19) and a second internal electrode unit (15) that are provided in the glass bulb (4); and an external electrode (24) that is provided on an outer surface of the glass bulb (4) in an area that corresponds to a discharge path, which is formed during lighting between the first internal electrode unit (19) and the second internal electrode unit (15), such that a positive column is generated along the discharge path and is expanded in transverse sectional area by the external electrode. The first internal electrode unit (19) is composed of internal electrodes (18) and (20), and the second internal electrode unit (15) is composed of internal electrodes (14) and (16).
Abstract:
A flat planar fluorescent lamp having barrier structures overlaying the electrodes is described. The barrier structures include barrier walls and platforms between the electrodes and the lamp cover with passageways between the platforms and the lamp cover. The barrier structures cause the electric discharge between the lamp electrodes to pass between the platforms and the lamp cover. The interior of the lamp and the top of the platform are coated with a fluorescent material such that the lamp produces light throughout its interior, including the region directly above the electrode, thereby providing a source of light in an area which would otherwise be a dark region surrounding the electrode. In one embodiment, a cold electrode, a hot electrode, an ion barrier, and a tubulation are formed in a glass seal as a single unit, placing the terminals of the electrodes and the tipped-off tubulation in a small region of the lamp to permit easier access and alignment. Two tubulations are used to permit the lamp to be pumped at locations adjacent the two electrodes to reduce problems associated with free ions in the region around the electrode. In one embodiment, a metal lamp body having an insulative coating and including an integral barrier structure is formed using conventional metal stamping techniques. In another embodiment, the lamp body is formed from glass which is shaped according to known techniques to form an integral barrier wall. The platform is then attached to the integral barrier wall and supported at its sides by ledges formed in the sidewall and channel wall of the lamp.
Abstract:
A low pressure arc discharge tube having structural means located within the envelope for raising the voltage across the arc tube. The structural means comprises at least one partition extending across the arc tube and having a dimension which is less than the electron energy relaxation distance of the arc discharge tube. Each of the partitions has at least one aperture therein which constricts the arc within the tube.
Abstract:
A low-pressure electric-discharge lamp is of a double- tube structure in which a gas is sealed into an outer tube of which an end portion is closed, and an inner tube defining an electric discharge path is supported by an end plate so that it can communicate with the inside of the outer tube and has electrodes housed therein. The end portions of the inner tube with the electrodes therein are secured to the end plate by a bonding agent, while part of the inner tube away from the end portions with the electrodes housed therein is adapted to abut against the end plate so as to be supported thereby. Thus it is easy to conduct the operation of securing the inner tube to the end piate. The assembled electric-discharge lamp is lightweight and has an inner tube which is mechanically stable.