Abstract:
A lamp for automotive front lighting and a vehicle headlight comprising the lamp are described, as well as a method of manufacturing the lamp. The lamp 10 comprises a base 12 for mechanical and electrical connection to an automotive headlight 50. A burner 14 is fixed to the base 12 and comprises an enclosed transparent vessel 22. A first filament 34 is arranged within the vessel 22. A holding wire 30c is arranged within the vessel, and a baffle 40 is arranged proximate to the first filament 34 to partially shield light emitted from the first filament 34. The baffle 40 is fixed to the holding wire 30c. The transparent vessel 22 comprises a vessel wall including a cylindrical portion 24 surrounding the first filament 34. In order to obtain a lamp which may withstand vibration, the vessel wall comprises, within the cylindrical portion 24, a deformed material portion 38 which contacts the baffle 40 or the holding wire 30c. The deformed material portion 38 is shielded from the first filament 34 by the baffle 40. During manufacture, the first filament 34, the baffle 40 and the holding wire 30c are inserted into the vessel 22, and the vessel wall is deformed to provide the deformed material portion 38.
Abstract:
To provide a filament lamp having a plurality of independent power supply pathways, the structure being capable of preventing the power supply pathways from electrically shorting to each other, a filament lamp formed of a straight-tube shaped luminous part having multiple filaments (F1, F2, F3) divided in the axial direction, and sealing parts (20) on each of opposite ends of the luminous part (10) in which are embedded metal foils (31, 32, 33) corresponding to the number of filaments in an aligned manner, and leads for supplying electricity independently to each filament, the luminous part (10) having a first housing space (11) for housing the filaments and a second housing space (12) for housing the leads (51, 52, 53), the housing spaces be connected and extending in the axial direction.
Abstract:
A long life, halogen cycle, incandescent lamp (30) for operation in excess of 85 volts. The lamp comprises a transparent glass envelope (34) having sealed therewithin a tungsten filament (45); a pair of electrical lead-ins (42, 44) connecting the filament and extending exteriorly of the envelope for connection to a supply voltage greater than 100 V; and a fill gas within the envelope, including a halogen, at a pressure of at least three atmospheres. The envelope is constructed of a five component alkaline earth aluminosilicate glass having a composition consisting essentially of, in weight percent from > 58 to about 64 % SiO2, from about 14 to about 17 % Al2O3; from 0 to about 1 % B2O3, from 1 to about 6 % MgO, from about 6 to about 12 % CaO, from about 7 to about 17 % BaO and from 0 to about 1.5 % ZrO2.
Abstract:
A halogen incandescent lamp is operated in convection-free conditions. Light efficiencies of about 15-20 lm/w may thus be achieved with a service life of about 2,000 hours. The important parameters are the size of the bulb, the size of the luminous element and the properties of the filling gas.
Abstract:
V-grooves (181, 182) are formed in the outer peripheries of sealing portions (151, 152) sealed by reducing the pressure in a heater lamp (11), and the heater lamp can be supported at the V-grooves by clampers that can perform both positioning and installation functions. The heater lamp (11) can be reliably installed by a simple structure that supports only the sealing portions (151, 152).
Abstract:
Die Glühlampe ist ausgestattet mit einem Leuchtkörper (5), der zusammen mit einer Füllung in einem Kolben (1) vakuumdicht eingebracht ist, wobei der Leuchtkörper (5) ein Metallcarbid aufweist, dessen Schmelzpunkt oberhalb dem von Wolfram liegt. Die Stromzuführung (3) ist integral mit dem Leuchtkörper (5) aus einem Draht gefertigt und mit einem elektrisch leitenden Überzug (7) versehen, der die Stoßfestigkeit und Einschaltfestigkeit entscheidend verbessert.
Abstract:
The invention relates to an electromagnetic radiation source (11), the main active component thereof being in the near infrared range, especially in the wavelength range between 0.8 μm and 1.5 μm. Said radiation source forms an elongated radiation area, and has an elongated halogen lamp (11) comprising a tubular glass body (14) having a base at each end and at least one spiral-wound filament (15). Said halogen lamp also has an elongated reflector (12). The bases (13) of the halogen lamp are arranged in the region of the reflector surface or behind the reflector surface, in relation to the position of the halogen lamp. The ends of the halogen lamp are bent towards the reflector, and the or at least one spiral-wound filament is thicker in the bent region of the glass body, in such a way that the radiation flux density of the radiation source is virtually constant in the longitudinal direction between the outermost points of the bases.
Abstract:
The sintered body of gastight translucent polycrystalline alumina contains oxidic magnesium, an oxidic second metal selected from erbium, holmium, thulium and dysprosium, and oxidic zirconium. The body can be used in a lamp vessel of an electric lamp.