General Electric Company

Denis A Lynch

Thomas M Golz

John M Davenport

Rolf S Bergman

Rajasingh Schwartz Israel

Tianji Zhao

Frank E Zalar

Charles D Tschetter

Yutao Zhou

Conrad E Bechard

A low voltage display lamp is provided for use in standard threaded lamp sockets. The lamp has an IR-reflective layer, preferably gold, coated on the convex side of the reflector to reflect infrared radiation (IR) away from the ballast to reduce the ballast's operating temperature. The IR-reflective coating is effective to reflect IR radiation away from the lamp housing.

Display lamp with reflector having IR-reflective coating

The invention is related to a reflector lamp comprising a parabolic primary reflecting section, a parabolic or spheric secondary reflecting section joined to the primary reflecting section, a parabolic or spheric tertiary reflecting section joined to the secondary reflecting section, and an incandescent or discharge light source. The secondary and tertiary reflecting sections have faceted surfaces which longitudinally extend along the surface thereof so that most (at least 50%) or substantially all the light reflected by the faceted surfaces avoids the light source and thus the light, which would be absorbed or scattered by the light source, is minimized or substantially eliminated.

Reflector lamp having a reflecting section with faceted surfaces

A lamp including a light source ( ) housed within a reflector ( ), the reflector further includes a coating ( ) over a major portion of an inner ( ) and/or outer surface ( ). The coating ( ) is comprised of multiple layers of high and low index of refraction materials to provide at least 90% reflectance between about 425 and 750 nanometers and less than 20% reflectance peaks between about 900 nanometers and 1800 nanometers

Optical interference coatings and lamps using same

A jacketed metal halide discharge lamp combining a miniature arc tube containing sodium iodide and a standby filament within an outer envelope, is provided with a glass sleeve around the arc tube. The glass sleeve is preferably connected to a point of potential which is positive relative to the arc tube, suitably the anode when the arc is operated on d.c. The glass sleeve prevents sodium loss from the arc by trapping ultraviolet light and by shielding the arc from photoelectrons. The sleeve serves also to reduce color shift when the arc tube is switched over from 'high' to 'low', and to protect the outer bulb in the event of arc tube rupture.

Growing community of inventors

South Euclid, OH, United States of America

Denis A Lynch