Abstract:
A dielectric barrier discharge, DBD, lamp device comprises a toroid shaped discharge chamber (10) having a discharge chamber wall (12). The discharge chamber wall comprises a tubular inner wall section (14), a tubular outer wall section (16), and two ring-shaped end wall sections (18, 20). Each of the end wall sections extend between an end of the outer wall section and an end of the inner wall section. A high voltage electrode (22) is provided at an outer surface of the outer wall section of the discharge chamber wall. A low voltage electrode comprises an electrically conducting fluid surrounded by the inner wall section of the discharge chamber wall. The DBD lamp device may be part of an optical fluid treatment device.
Abstract:
The invention relates to analytical chemistry. In the analyser, mercury placed in a spectral lamp is enriched with a mercury isotope having an even neutron number, wherein said isotope constitutes not less than 50% of the total mercury content in the spectral lamp. Moreover, the discharge cavity of the spectral lamp is connected to a ballast cavity, the volume of which is greater than the discharge cavity volume, and electrical discharge generating means, the discharge cavity and the ballast cavity are designed in such a way that the discharge generated in the discharge cavity does not penetrates into the ballast cavity. A buffer gas in the spectral lamp contains a noble gas in a quantity equal to or greater than 50%, the charge of the atomic core of said gas being not less than 36. Said invention makes it possible to lower the detection level of mercury in a carrier gas and to reduce a drift.
Abstract:
A cold cathode fluorescent lamp (10) is configured generally as a trapezium having first (11), second (12), third (13) and fourth (14) sides, the lamp (10) has a first end (15) adapted to be connected to an electric supply and a second end (16) adapted to be connected to the electric supply, the first and third sides (11 and 13) being generally parallel to one another and running in opposite directions, the second side (12) extending between the first and third sides (11 and 13) and not at right angles to either the first side (11) or the third side (13), and the fourth side (14) being defined by a first portion (17) extending from the third side (13), a second portion (18) of generally inverted U-shape extending towards the second side (12) and a third portion (19) extending from the second portion (18) towards the first side (11).
Abstract:
The present invention relates to a lamp device using a high-pressure vapor discharge lamp, particularly to an improvement for controlling the influence of the generation of heat, which accompanies an increase in lamp power and a reduction in the size of a reflector. A lamp device of the present invention comprises a discharge lamp having an arc tube enclosing luminescent materials and having a pair of opposing electrodes disposed therein and a pair of sealed portions extending from the arc tube; a reflector which reflects light radiated by the discharge lamp; a transparent member covering an open end of the reflector and accommodating the discharge lamp in a space between the transparent member and the reflector; and means for preventing an excessive temperature rise wherein the temperature rise of welded parts of wiring members electrically connected to the electrodes of the discharge lamp is restricted.
Abstract:
A less costly bulb-shaped fluorescent lamp with improved assembly efficiency is provided which prevents the impairment of product quality due to the change in color of a holder or the slipping off of a fluorescent tube from the holder decreased in resin strength. The fluorescent lamp includes a set of fluorescent tubes, filament coils disposed at both ends of each fluorescent tube, a starter circuit for activating the fluorescent tubes, a holder for retaining the fluorescent tubes, and a case containing the starter circuit. The holder includes holes for receiving the fluorescent tubes, and a recess defined in a central portion of the holder and extended in the opposite direction of the fluorescent tubes.
Abstract:
A less costly bulb-shaped fluorescent lamp with improved assembly efficiency is provided which prevents the impairment of product quality due to the change in color of a holder or the slipping off of a fluorescent tube from the holder decreased in resin strength. The fluorescent lamp includes a set of fluorescent tubes, filament coils disposed at both ends of each fluorescent tube, a starter circuit for activating the fluorescent tubes, a holder for retaining the fluorescent tubes, and a case containing the starter circuit. The holder includes holes for receiving the fluorescent tubes, and a recess defined in a central portion of the holder and extended in the opposite direction of the fluorescent tubes.
Abstract:
A light emission display having a housing including at least two glass members thermally glued to one another at a predetermined atmospheric pressure to form a plurality of cavities inside the housing, and at least one of a gas and a light emitting substance contained within the cavities. Electrodes are located between the glass members and protrude into each cavity in only a coplanar manner with respect to a main surface of one of the glass members. An input signal is supplied to the electrodes resulting in selective light emission from the cavities.
Abstract:
A serpentine avionics fluorescent tube with enhanced uniformity of luminance and chromaticity where the serpentine tube has a phosphor coating deposited therein after the fluorescent tube has been bent into a serpentine shape by pulling a spay nozzle emitting phosphor through the previously bent fluorescent tube.
Abstract:
A single-ended glass halogen lamp includes an infrared reflecting shroud surrounding a lamp filament which reflects infrared energy back to the lamp filament to heat the filament and improve overall lamp efficiency. The shroud is supported within the lamp enclosure by the electrical leads which connect the lamp filament to a source of electricity. The optical interference filter is preferably a tantala-silica coating formed on an exterior of an ellipsoidal shaped shroud.
Abstract:
A new art form of neon lights in forming functional shapes, letters and numbers of a single plane suitable to being mounted with the use of clips which also supply electricity to light the tubes of neon letters when the clips are secured to two metal rods inserted in vertical plastic hangers and hung, such as in a window and end pieces which have the electrical connections built in, are applied at both the rods at either end and a transformer lead is connected to provide its DC power.