Abstract:
Incandescent lighting structure. The structure includes a thermal emitter that can, but does not have to, include a first photonic crystal on its surface to tailor thermal emission coupled to, in a high-view-factor geometry, a second photonic filter selected to reflect infrared radiation back to the emitter while passing visible light. This structure is highly efficient as compared to standard incandescent light bulbs.
Abstract:
The present invention relates to a contactless cooking heater, and more particularly, to a contactless cooking heater that indirectly provides heat to increase temperature, without direct contact between a near-infrared lamp and a heat medium disposed in a cooking container. To this end, a contactless cooking heater including heating means to heat a heat medium disposed in a cooking container comprises: at least one protector tube passing through the cooking container; a near-infrared lamp disposed within the protector tube; and a fixture for fixing the near-infrared lamp.
Abstract:
The invention is directed to a process for the creation of a photonic lattice on the surface of an emissive substrate (10) comprising first depositing a thin film metal layer on at least one surface of the substrate, the thin film metal comprising a metal having a melting point lower than the melting point of the substrate, then annealing the thin film metal layer and the substrate to create nano-particles on the substrate surface by dewetting, and anodizing or plasma etching the annealed thin film metal and substrate to create pores (18) in the nano-particles and the substrate such that upon exposure to high temperature the emissivity of the substrate is refocused to generate emissions in the visible and lower infrared region and to substantially eliminate higher infrared emission, and to the substrate thus created.
Abstract:
Disclosed are cathode units for use in fluorescent discharge lamps which include a stem element adapted for sealing engagement with an end of an elongated vitreous/glass tube, first and second electrode support wires extending axially through the stem element, and a filament electrode which is oriented substantially axially with respect to the support wires. The support wires each have a inwardly-directed tip portion and the filament electrode is attached thereto. The ends of the filament electrode are attached to the support wires by welding. In alternative embodiments, the disclosed cathode unit can further include an electrode shield assembly.
Abstract:
The lamp of the invention comprises lead rods (6, 7, 8) and filament structure bodies (13). Each of the filament structure bodies has filaments (13a, 13b, 13c). In the present invention all the filaments (13a, 13b, 13c) are arranged around the outside of the lead rods (6, 7, 8). Since light from each of the filaments (13a, 13b, 13c) reaches outside of the lamp (1) without the light travel being hindered by the three rods (6, 7, 8), the light from the filaments (13a, 13b, 13c) is uniformly radiated. By this construction of the lamp (1), uniformity of a distribution of luminous intensity can be realized.
Abstract:
Emetteur halogène infrarouge utilisé dans le domaine du chauffage par rayonnement, comportant un filament en tungstène (1) et une enveloppe (2) de protection associée à un filtre (4) de limitation de l'intensité lumineuse. Il comporte un dispositif de commande conçu de sorte que le filament (1) émette à une température comprise entre 1500 et 1800K, et en ce que l'enveloppe (2) de protection présente une forme de tube, tandis que le filament (1) est disposé à l'intérieur de l'enveloppe de protection et comporte une succession de courbures, de changements de directions et de segments droits, en sorte qu'il présente une forme permettant qu'il occupe une grande partie de l'espace intérieur de l'enveloppe (2), et en sorte de loger à l'intérieur de l'enveloppe (2) une quantité significative de tungstène, à savoir une quantité apte à permettre un fonctionnement dans ladite gamme de température.
Abstract:
It is provided a lamp (12) for an automotive headlamp (10), comprising a filament coil (14) for emitting light (22) and a nominal alignment axis (32) for aligning the filament coil (14) such, that the filament coil (14) is positioned in the middle of an allowable tolerance box wherein the filament coil (14) is arranged shifted to the nominal alignment axis (32). Due to the shifted arrangement of the filament coil (14) the flexibility given by the allowable tolerance may be used for positioning the filament coil (14) such, that the projected image (18) of the filament coil (14) is projected nearer to the bright/dark-cutoff (40) without blinding oncoming traffic.
Abstract:
It is provided a lamp (12) for an automotive headlamp (10), comprising a filament coil (14) for emitting light (22) and a nominal alignment axis (32) for aligning the filament coil (14) such, that the filament coil (14) is positioned in the middle of an allowable tolerance box wherein the filament coil (14) is arranged shifted to the nominal alignment axis (32). Due to the shifted arrangement of the filament coil (14) the flexibility given by the allowable tolerance may be used for positioning the filament coil (14) such, that the projected image (18) of the filament coil (14) is projected nearer to the bright/dark-cutoff (40) without blinding oncoming traffic.
Abstract:
The present invention provides a method of fabricating an electric incandescent lamp with improved mechanical stability of its filament, the method comprising the steps of: coiling a first coil of a wire having diameter d around a first mandrel having 5 diameter M1 with a first pitch and a first number of turns; winding said first coil around a second mandrel having diameter M2 with a second pitch and a second number of turns to form a coiled coil filament; mounting and arranging the coiled coil filament within a light permeable envelope; hermetically sealing said envelope, heating the coiled coil filament above its recrystallization temperature within the envelope for recrystallization of said coiled coil. The primary and secondary winding preferably have primary and secondary mandrel-to-wire ratios Y1 and Y2, wherein Y1 = M1/d >= 3 and Y2 = M2/(M1+2d) > 3. The method according to the present invention enables a further reduction of the length of the coiled coil filament, thus reducing the mechanical stresses caused by gravity in a horizontal burning position and thus improving the structural rigidity of the coiled coil filament.
Abstract:
Disclosed are cathode units for use in fluorescent discharge lamps which include a stem element adapted for sealing engagement with an end of an elongated vitreous/glass tube, first and second electrode support wires extending axially through the stem element, and a filament electrode which is oriented substantially axially with respect to the support wires. The support wires each have a inwardly-directed tip portion and the filament electrode is attached thereto. The ends of the filament electrode are attached to the support wires by welding. In alternative embodiments, the disclosed cathode unit can further include an electrode shield assembly.