General Electric Company

Other

Douglas Allen Doughty

Alok Mani Srivastava

Holly Ann Comanzo

William Winder Beers

Anil Raj Duggal

Victor D Roberts

Timothy John Sommerer

Yung S Liu

Ronald H Wilson

John P Cocoma

Jennifer L Myers

A SrAl O green luminescent material is doped with Mn activator ions and at least one trivalent rare earth sensitizer ion species. Preferably, the material contains four rare earth ions: Ce , Pr , Gd and Tb . Optionally, a portion of the aluminum may be substituted with magnesium. The material may be used as a display device or lamp phosphor or as an X-ray diagnostic or laser scintillator.

Device with Mn2&plus; activated green emitting SrAl12O19 luminescent material

A SrAl,O,green luminescent material is doped with Mn,activator ions and at least one trivalent rare earth sensitizer ion species. Preferably, the material contains four rare earth ions: Ce,, Pr,, Gd,and Tb,. Optionally, a portion of the aluminum may be substituted with magnesium. The material may be used as a display device or lamp phosphor or as an X-ray diagnostic or laster scintillator.

Mn2&plus; activated green emitting SrAl12O19 luminescent material

A SrAl,O,green luminescent material is doped with Mn,activator ions and at least one trivalent rare earth sensitizer ion species. Preferably, the material contains four rare earth ions: Ce,, Pr,, Gd,and Tb,. Optionally, a portion of the aluminum may be substituted with magnesium. The material may be used as a display device or lamp phosphor or as an X-ray diagnostic or laser scintillator.

Mn2&plus; activated green emitting SrAL12O19 luminiscent material

A mercury-free ultraviolet (UV) discharge source includes an elongated envelope having a diameter in a preferred range from approximately 2 to 3 cm, containing a rare gas fill (xenon or krypton, including mixtures of these with other rare gases) at a pressure in a range from approximately 10 millitorr to approximately 200 millitorr and a power supply for ionizing the rare gas fill and generating a discharge current in a range from approximately 100 to approximately 500 milliamperes (mA). The UV discharge source has an efficiency and output comparable to existing mercury-based low-pressure discharge sources and is intended for use with a suitable phosphor capable of converting the UV radiation to visible light in a fluorescent lamp.

Mercury-free ultraviolet discharge source

A system of at least three multi-colored LED's has an optimized color rendering index by proper selection of the wavelengths of each LED, such system being useful for general illumination purposes.

Light-emitting diode white light source

A glass rod extending through and sealed to the exhaust tube of an electrodeless SEF fluorescent discharge lamp has a metal support member at one end thereof for supporting an amalgam at or near the apex of the lamp envelope. The metal support member may comprise a spiral-shaped wire, a wire screen, or a wire basket. Preferably, the amalgam is maintained in contact with the apex of the lamp envelope. If desired, the metal support member may comprise a magnetic material to allow for magnetic transport of the amalgam assembly during lamp processing. The metal support member restricts spreading of the amalgam when in a liquid state; and the glass rod provides rigid support for the amalgam independent of lamp orientation.

Apparatus for securing an amalgam at the apex of an electrodeless

A silicon flake comprising silicon in a sufficient quantity is inserted into the arc tube of a high-intensity, metal halide discharge lamp in order to avoid a substantial buildup of free halogen, thereby extending the useful life of the lamp.

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Goffstown, NH, United States of America

Douglas Allen Doughty