Abstract:
There are disclosed several embodiments of a cathode (11; 20; 30) for cold cathode lamps having the surface at least partially coated with a layer of a getter material (15; 26; 31), which allows to achieve a reduction of the value of the work function of the cathode (11,20,30) and therefore a reduction of the power consumption of the lamp.
Abstract:
A capacitively coupled fluorescent lamp package having a capacitively coupled fluorescent lamp having cylindrical ceramic tubes is disclosed. The lamp package further includes an electronic driver or inverter circuit for driving the lamp and supply nodes for receiving a supply voltage. The inverter circuit is a conventional inverter circuit, such as, for example, current-fed push-pull, voltage-fed push-pull, active clamped Flyback, and voltage-fed half-bridge inverter circuits, used in conventional CCFLs. A ballast circuit may be connected to the inverter circuit for properly ballasting the lamp.
Abstract:
This invention relates to a field emission cathode (1) for a light source. The cathode (1) comprises at least one base body (3) having an emission surface (3'). Further, the base body (3) is formed by a structured material, and the emission surface (3') is at least partly covered by a field emitting nano-structured material (2). Moreover, this invention relates to a light source, comprising an anode (5), a cathode (1) and an evacuated container (6) enclosing the anode (5) and the cathode (1). The container (6) have at least one inner wall being provided with a luminescent layer (4) as well as a conductive layer forming said anode (5) and the cathode (1) is a field emission cathode of the above mentioned type.
Abstract:
The invention describes a discharge lamp (1) comprising a quartz glass envelope (10), a discharge chamber (11) and a pair of electrodes (2), wherein an outer end portion (2A) of an electrode (2) overlaps a conductive foil (3) embedded in a pinch (12) of the quartz glass envelope (10), and wherein the electrode (2) comprises an inner structured zone (ZB) in an inner portion (2B) of the electrode (2) between the conductive foil (3) and the discharge chamber (11), and an outer structured zone (ZA) over the outer end portion (2A) of the electrode (2), and wherein the outer structured zone (ZA) and the inner structured zone (ZB) are different from each other. The invention also describes a method of manufacturing an electrode (2) for use in a discharge lamp (1). The invention further describes an electrode (2) for use in a discharge lamp (1).
Abstract:
Изобретение относится к аналитической химии. В анализаторе, ртуть помещенная в спектральную лампу, обогащена изотопом ртути с четным количеством нейтронов, причем указанный изотоп составляет не менее 50% от общего количества ртути в спектральной лампе. Кроме тог, в спектральной лампе разрядная полость соединена с балластной полостью, объем которой превышает объем разрядной полости, причем средства возбуждения электрического разряда, разрядная полость и балластная полость выполнены с возможностью возбуждения в разрядной полости разряда, не проникающего в балластную полость. Буферный газ, помещенный в спектральную лампу, содержит не менее 50% благородного газа, атомное ядро которого имеет заряд не менее 36. Технический результат - снижение предела обнаружения ртути в газе-носителе и уменьшение дрейфа.
Abstract:
The invention relates to a Lamp, whereby the lamp comprises electrodes for which in the initial state during run-up of the lamp under 3.2 A run-up current the average increase of electrode tip temperature for the first 25 ms after lighting of the lamp is = 140 K/ms and = 3 K/ms.
Abstract:
Offenbart sind eine Entladungslampe mit zumindest einer Elektrode sowie ein Verfahren zur Herstellung einer Elektrode. Erfindungsgemäß ist das Gefüge eines Abschnitts (30) der Elektrode (20, 22) mittels hochenergetischer Strahlung, vorzugsweise Laserstrahlung, zumindest teilweise umgewandelt.
Abstract:
An anode electrode (10) is composed of a long straight cylinder-shaped body, and the outer circumference of the cylinder-shaped body is covered with a dielectric (12). A cathode part (20) has a shape of straight half cylinder. A cathode (25) surrounds the anode, and the anode and the cathode are arranged parallel to one another in the lengthwise direction. The cathode is provided with a cathode wire group (16). In the cathode wire group, both edges of the wire are fixed at both edges (20D) of the half cylinder shaped body constituting the cathode part, in the lengthwise direction, so as to have the plurality of wires parallel to one another. On a surface (20S) of the cathode part on a side that faces the anode, a reflecting plane is formed for reflecting radiation in a vacuum ultraviolet region. Thus, high-intensity light having a wavelength in the vacuum ultraviolet region can be obtained, and an object to be irradiated can be efficiently irradiated with the light.