Abstract:
To eliminate the necessity for supervising the composition of a fill beingntroduced to a halogen incandescent lamp bulb, so that the proportion of halogen containing additive and inert gas will be at a predetermined ratio, by spectroscropic and other similar means, the halogen containing additive (8) is placed, in solid or liquid phase, in a mixing vessel at a temperature (T.sub.1) which is in excess of a temperature (T.sub.2) which is necessary to result in the vapor pressure to enrich the inert gas at the predetermined quantity. The inert gas is conducted into the vessel and thereby excessively enriched. The excessively enriched inert gas is passed through a condenser, the temperature of which is accurately controlled to the temperature (T.sub.2) to thereby condense out the excess halogen additive, so that the mixture then will have the desired relationship of halogen containing additive and inert gas; this mixture is then being filled into the lamp. If the halogen is present in form of a carbon containing compound, or a hydrocarbon compound, it is conducted first over a cracking unit (15), for example quartz granules heated to 900.degree. C., to remove any carbon. Composite fill mixtures of, preferably, the same inert gas such as argon, with different halogen additives, such as bromine or iodine, can be mixed in a blender (17) of constant flow throughput.
Abstract:
To prevent the occurrence of brittle weld junctions upon joining thin intal lead-in wires (3a, 3a') to thicker connecting pin wires (3b, 3b'), an intermediate element of nickel (4) is positioned between the thinner and thicker wire parts, the nickel joining easily with the two parts of the molybdenum wires. The junction molybdenum-nickel-molybdenum, or tungsten-nickel-tungsten in case tungsten wires are used, is preferably located within the region of the press (5) of the lamp (1). In contrast to direct welding of molybdenum to molybdenum, or tungsten to tungsten, the weld does not decay.
Abstract:
Luminous body for an incandescent lamp and method for producing such a luminous body. A wire for a luminous body is used whose diameter increases from the outside in. The production method is based either on a deposition method or a metal-removal method.
Abstract:
A reflector lamp, in particular a halogen reflector lamp, has a light-transmitting lamp vessel, in which at least one luminous member is accommodated, at least one vessel section of the lamp vessel being provided with a reflective coating. According to the invention, the reflective coating has an interference filter, which is substantially impervious to light in the visible wavelength range and has defined transmission and reflection properties for light in the infrared wavelength range.
Abstract:
A light source comprising a heatable filament (1) or an electrode, wherein the filament (1) or the electrode is arranged in a lamp (2) or in a tube. In order to use the light source in a wide variety of manners even in rough conditions, the filament (1) or the electrode is provided at least partially with a mechanical stabilization system. The invention also relates to a method for mechanical stabilization of the filament (1) or electrode of a light source, wherein stabilization is produced by exposing the filament (1) or electrode to a short pulsed gas pressure increase, involving a rare gas, during heating. Stabilization may also be produced by a coating or deposition (4).
Abstract:
A reflector lamp whose lamp receptacle (1) is provided in part with a reflective coating (6) as well as a reflector contour. The coating is composed of at least two layers of highly heat-resistant metals. One of the layers reflects as well as possible while the superimposed layer absorbs as well as possible.
Abstract:
An incandescent lamp having a carbide containing luminous element, uses a wire for the luminous element that is coated on the outside with at least two different high melting metal compounds from at least one of the groups of carbides, borides and nitrides. The luminous element reaches a temperature of at least 3000° K during operation.
Abstract:
The invention relates to a light bulb comprising an illumination body, which is inserted, together with a filler material, into a bulb in a vacuum-tight manner. The illumination body has a metal carbide, whose melting point lies above that of tungsten. The current supply is configured in two parts from a first section and a second section. The current supply is configured integrally with the illumination body from a single wire and is covered with a coating that reduces the susceptibility to breakage.
Abstract:
The invention relates to an incandescent lamp (1) which is provided with an illuminant (7) which is inserted in a bulb (2) together with a filling in a vacuum-tight manner, the illuminant (7) comprising a metal carbide that has a melting point above that of tungsten. The bulb also comprises a source and a sink for a material of which the illuminant is depleted during use.
Abstract:
The invention relates to an incandescent lamp having a carbide-containing luminous element and current supplies holding the luminous element. A luminous element is introduced into a bulb together with a filling in a vacuum-tight manner, the luminous element having a metal carbide the melting point of which is preferably above that of tungsten, and the luminous element being helical. The luminous element has a core wire and a wrapped filament and is constituted of various materials and contains a metal carbide.