Advanced Lighting Technologies, Inc.

Advance Lighting Technologies, Inc.

Advanced Lighting Techniques, Inc.

Abbas Lamouri

Juris Sulcs

Norman L Boling

Eric Krisl

Paul Morand

Leonid Pekker

Frederic F Ahlgren

Timothy R Brumleve

Chakrapani Varanasi

Bingwu Gu

David Earl Bassett

Ajaypal Naruka

Yongyei Gu

Yongwei Gu

Methods for improving the efficiency of infrared (IR) halogen lamps and IR halogen lamps having improved efficiency are disclosed. In a method of aligning a filament in a lamp body, the lamp body having the filament therein is rotated, and tubular end portions are heated and necked down which may assist in positioning the filament within the lamp and reduce end losses. IR halogen lamps formed from glass tubes having an OD less than 5 mm are also disclosed. The reduced diameter of the glass tubing increases the surface area for IR energy reflection and reduces end losses. Spuds or beads may be used to position the filament within the lamp.

Infrared halogen lamp with improved efficiency

A metal halide lamp having a high pressure quartz arc tube in which the electrodes are non-thoriated.

Dopant-free tungsten electrodes in metal halide lamps

The present application discloses high intensity discharge ('HID') lamps, arc tubes, and methods of manufacture. The application relates to HID lamps, arc tubes, and methods of manufacture wherein a precise amount of fill gas may be contained in the light-emitting chamber of the arc tube so that the pressure of the fill gas contained in the arc tube at substantially room temperature may be precisely controlled at pressures greater than about one-half atmosphere.

High intensity discharge lamps, arc tubes, and methods of manufacture

An apparatus and method for achieving desired spectral emission characteristics in plasma lamps is disclosed. The apparatus and method use multi-layer thin film optical interference coatings to selectively reflect a portion of the light such that it can be absorbed in the plasma. The multi-layer thin film coating is applied to any surface of the lamp, which substantially surrounds the plasma. The number and thickness of the layers in the coating are selected to ensure that significant portion of the selected light emitted from the plasma is reflected by the coating and absorbed by the plasma. The properties of the coating, reflectance, transmittance and absorption are determined as a function of plasma and lamp characteristics. These characteristics include the spectral emission characteristics of the plasma, the spectral absorption characteristics of the plasma, the physical dimensions of the plasma, the angular distribution of the light emitted from the plasma on the coating and the geometry of the coated surface.

Method of making a plasma lamp

A plasma lamp and method having high efficacy, high color rendering index, and a desirable correlated color temperature with improved color consistency from lamp to lamp. The lamp may include a vaporizable fill material comprising halides of sodium and scandium and a filter formed from a vitreous material containing a dopant. In one aspect, the filter is formed by a glass shroud containing neodymium oxide that reduces the transmission of yellow light.

Plasma lamp and method

An apparatus and method for achieving desired spectral emission characteristics in plasma lamps is disclosed. The apparatus and method use multi-layer thin film optical interference coatings to selectively reflect a portion of the light such that it can be absorbed in the plasma. The multi-layer thin film coating is applied to any surface of the lamp, which substantially surrounds the plasma. The number and thickness of the layers in the coating are selected to ensure that a significant portion of the selected light emitted from the plasma is reflected by the coating and absorbed by the plasma. The properties of the coating, reflectance, transmittance and absorption are determined as a function of plasma and lamp characteristics. These characteristics include the spectral emission characteristics of the plasma, the spectral absorption characteristics of the plasma, the physical dimensions of the plasma, the angular distribution of the light emitted from the plasma on the coating and the geometry of the coated surface.

The present invention is directed to methods of making arc tubes for high intensity discharge lamps. The bottom portion of the light emitting chamber of the arc tubes is flattened in an area between the electrodes to reduce the distance between the bottom wall of the arc tube and the arc, and to increase the surface area of the pool of condensed halides during operation of a metal halide lamp. The flattened bottom of the arc tubes may be generally planar, slightly arcuate longitudinally and/or transversely, or slightly v-shaped longitudinally and/or transversely. The top portion of the arc tube conforms generally to the shape of the arc during operation of the lamp.

Method of making arc tubes

The present invention is directed to horizontally burning formed-body arc tubes and arc tube blanks for high intensity discharge lamps. The bottom portion of the light emitting chamber of the arc tubes is flattened in an area between the electrodes to reduce the distance between the bottom wall of the arc tube and the arc, and to increase the surface area of the pool of condensed halides during operation of a metal halide lamp. The flattened bottom of the arc tubes may be generally planar, slightly arcuate longitudinally and/or transversely, or slightly v-shaped longitudinally and/or transversely. The top portion of the arc tube conforms generally to the shape of the arc during operation of the lamp.

Horizontal burning hid lamps and arc tubes

A method of making an electric lamp having a gas filled outer jacket wherein the space enveloped by the jacket may be flushed and filled with the desired fill gas without the use of a mechanical evacuation system including an exhaust pump. The space may be flushed and filled to obtain a controlled atmosphere within the space by inserting a gas dispensing probe into the space to displace the uncontrolled atmosphere with the fill gas. The final pressure of the fill gas which is sealed within the space may be controlled by controlling the temperature of the fill gas during the flush/fill procedure until the outer jacket is sealed.

Method of making an electric lamp having a gas filled outer jacket

A tipless arc tube for a high intensity discharge lamp and method of manufacture wherein the arc tube may remain open to an uncontrolled atmosphere during the step of hermetically scaling the arc tube. The novel arc tube and method obviate the need to perform any process steps within a controlled atmosphere. The pressure of the fill gas sealed within the arc tube may be controlled by controlling the temperature of the fill gas during the step of hermetically sealing the arc tube. The novel arc tube and method obviate the need to use a pump to control the fill gas pressure.

Growing community of inventors

Aurora, OH, United States of America

Abbas Lamouri