Rockwell International Corporation

Thomas A Seder

Young J Chung

Brian P Dehmlow

William S Ebeltoft

David F Beat

W David Meyer

An improved fluorescent lamp and a method of preparing the same are described. The fluorescent lamp includes a tube having a first surface which serves as a substrate. A continuous layer of aluminosilicate sol-gel material having phosphor particles embedded therein is formed on the first surface of the tube. The continuous layer of sol-gel material having phosphor particles embedded therein is formed by first preparing an aluminosilicate sol-gel solution. The phosphor particles are next mixed in the aluminosilicate sol-gel solution to obtain a phosphor particle carrying aluminosilicate sol-gel solution. Then, the first surface is coated with the phosphor particle carrying aluminosilicate sol-gel solution. The phosphor particle carrying aluminosilicate sol-gel solution is dried on the first surface to form a phosphor particle containing sol-gel layer.

Use of aluminosilicate sol-gel materials as a phosphor carrier in the

A dual filament fluorescent lamp where the individual filaments are disposed along diameter lines of a fluorescent tube and are disposed on differing planes at differing heights within the tube with a predetermined separation between the tube filaments and the filaments being disposed in a perpendicular fashion when viewed from above. The primary filament is disposed above the secondary filament and it has a larger diameter that the secondary filament.

Dual filament fluorescent lamp for avoinics liquid crystal displays

A automated miniature fluorescent lamp processing station is disclosed which is used to fabricate miniature fluorescent lamps. The system includes: flow-through gas processing to enhance buffer gas purity, monitoring of the temperature of every lamp in a batch during processing to permit accurate determination of required bus buffer gas fill pressures, real-time determination of target filled pressure at the lamp temperature processing by use of a gas law algorithm and use of microprocessor interfaced sensors and transducers to effect the high level of automation typically required to fabricate avionics grade lamps.

Miniature fluorescent lamp processing apparatus

A method and apparatus for uniform application of a coating of fluorescent phosphors to tubes that have been bent into a serpentine shape, which includes dragging a hose and phosphor spray nozzle through the bends of the serpentine tube, thereby depositing a phosphor layer throughout the serpentine tube.

Method and apparatus for manufacturing serpentine avionics fluorescent

A long life fluorescent lighting system provides uniform white light illumination with high efficiency. The system includes a gas-filled lamp with no phosphors on the inside surface of the lamp. A diffuser plate or mirror external to the lamp includes a phosphor coating to convert ultraviolet radiation emitted by the lamp to uniform white light illumination. The lamp may be filled with mercury vapor enriched with .sup.196 Hg for emission of 254 nm wavelength ultraviolet radiation and minimization of radiation trapping. The system may include band pass reflectors for reflecting 254 nm radiation to the phosphors and reflecting unwanted 185 nm radiation away from the phosphors and back into the lamp. The system provides uniform, high efficiency white light output suitable for back illumination of liquid crystal displays.

Growing community of inventors

Cedar Rapids, IA, United States of America

Thomas A Seder