Osram Sylvania Inc.

Gte Products Corporation

Gte Proucts Corporation

Gregory Zaslavsky

Joseph V Lima

Nikolaos Barakitis

David W Johnston

Sheppard Cohen

William D Koenigsberg

William M Keeffe

Richard Speer

Miguel Galvez

Arlene Hecker

Jeffrey T Neil

Victor E Perez

William George

Ernest A Davey, Jr

Fred Whitney

Dana Caldwell

Zeya K Krasko

Christopher Scott Nordahl

David C Wentzel

Stefan Kotter

Michael J Shea

John Francis Waymouth

Philip E Moskowitz

Jeffery J Serre

James A Avallon

Louise D Cleary

Joanne M Browne

Richard S Speer

William A George

A light source () comprises a tubular glass heat pipe () having a given inside diameter ID. A tubular fiberglass wick () is positioned within the glass heat pipe (). The fiberglass wick () has an outside diameter OD substantially equal to the given inside diameter ID and has a substantially centrally located open chamber () extending the length thereof. A quantity of an evaporable-condensable medium () is provided within the glass heat pipe () and a metal cap () selected from the group of glass-sealing metals and alloys is fixed to a proximal end () of the glass heat pipe (). Heat dissipaters () are fixed to the distal end () of the heat pipe () and a light emitting diode () is fixed to the metal cap (). Power conducting traces () are formed with the heat pipe () and are electrically connected to the light emitting diode (). A lamp () can be formed with a plurality of the light sources ().

LED light source having glass heat pipe with fiberglass wick

A fluorescent lamp includes a tubular member or envelope having an arc generating and sustaining medium therein. An electrode is provided in each end of the tubular member and a phosphor coating is applied to the interior surface of the tubular member. A mercury dispenser is situated within the tubular member. The mercury dispenser includes a body composed of a material. The body is provided with a bore. A wire plated with a material capable of wetting mercury is provided in the bore. A quantity of mercury is deposited in the bore in contact with the wire.

Precision mercury dispenser using wire

A fluorescent lamp () includes a tubular member or envelope () having an arc generating and sustaining medium () therein. As known, the tubular envelope () is constructed of a suitable glass, for example lime glass. An electrode () is provided in each end of the tubular member () and a phosphor coating () is applied to the interior surface () of the tubular member (). A mercury dispenser () is situated within the tubular member (). The mercury dispenser () includes a body () composed of a material selected from the group consisting of glass and ceramic materials. The body () is provided with a bore (). A first material () capable of wetting mercury coats the bore. In a preferred embodiment the first material () is silver having a thickness between 0.1&#x3bc; and 8&#x3bc;. A quantity of mercury () is deposited in the bore () in contact with the first material ().

Mercury dispenser, method of making mercury dispenser and method of dosing mercury into ARC discharge lamp

A ceramic discharge vessel for a high-intensity discharge lamp includes a hollow body and two capillaries attached to the body. The capillaries have respective electrodes therein, where portions of the electrodes inside the body are spaced from each other and have longitudinal axes that are not coplanar. That is, in contrast to the prior art where the longitudinal axes are coplanar, the capillaries herein are moved (in effect, rotated) to positions in which a first plane defined by a longitudinal axis of one capillary and a first point where a second capillary is attached to the body is intersected by a longitudinal axis of the second capillary only at the first point.

Single-ended discharge vessel with diverging electrodes

A ceramic discharge vessel in a green state prior to assembly includes a first discharge vessel part in a green state, a second discharge vessel part in a green state, wherein the first and second discharge vessel parts form a discharge vessel when joined together, and a first capillary attached to the first discharge vessel part and a second capillary attached to one of the first and second discharge vessel parts. To facilitate joining the first and second discharge vessel parts, a first removable handle is temporarily attached to the first discharge vessel part for maneuvering the first discharge vessel part, and a second removable handle is temporarily attached to the second discharge vessel part for maneuvering the second discharge vessel part.

Green-state ceramic discharge vessel parts

An apparatus for making a ceramic arc tube for high intensity discharge (HID) lighting applications is provided wherein the arc tube contains a high buffer gas pressure and RF induction heating is used to melt a frit material to form a hermetic seal.

Apparatus for making high buffer gas pressure ceramic arc tube

A ceramic arc tube for high intensity discharge (HID) lighting applications is provided wherein the arc tube contains a high buffer gas pressure. A method and apparatus for making the arc tube are also provided wherein RF induction heating is used to melt a frit material to form a hermetic seal.

High buffer gas pressure ceramic arc tube and method and apparatus for making same

Method for introducing a limited amount of mercury into a fluorescent lamp during manufacture thereof includes the steps of forming the lamp with an exhaust tubulation therein open at an end thereof, exhausting the interior of the lamp through the exhaust tubulation, placing a body of metal material not reactive with mercury in the exhaust tubulation open end, the body having a coating of metal which amalgams with mercury, over a selected surface area of the body, and having mercury on the coated area of the body, such that a limited amount of the mercury is retained by the metal coating, and sealing the open end of the exhaust tubulation, whereby the amount of mercury retained on the body and introduced into the lamp is limited by the surface area of the metal coating on the body.

Method for introducing mercury into a fluorescent lamp during manufacture and a mercury carrier body facilitating such method

A quartz arc tube for a metal halide lamps and its method of making are described. The quartz arc tube has a cylindrical design which promotes a nearly symmetric longitudinal surface temperature profile during operation. The profile has a maximum temperature of about 900&deg; C. which allows for longer operating life at high average wall loadings.

Quartz arc tube for a metal halide lamp and method of making same

A fluted feed-through for a discharge lamp includes a fluted ceramic core with plural channels and plural individual molybdenum or tungsten wires running in different ones of the plural channels. The wires are twisted together at the ends of the feed-through. The feed-through is insertable into a capillary tube of a ceramic discharge lamp. The wires of the feed-through have a different thermal coefficient of expansion than the ceramic discharge lamp. The wires are thin enough so that the absolute magnitude of the thermal coefficients of expansion is sufficiently small to prevent seal cracks and leaking.

Discharge lamp having a fluted electrical feed-through

Ceramic arc tube

A high pressure, lamp may be made in a pressure vessel by using an induction coil to melt an edge portion of a sealing wafer pressed against the circumference of an opening in the body of the lamp envelope. The pressure vessel and the lamp envelope are filled with desired fill materials. Induction heating is carried out by the induction coil and induction receiver that presses against the wafer, the lamp envelope or both to hold the melting piece or pieces in contact. The induction receiver may be fused to the lamp body forming a functional part of the overall lamp structure. The preferred resulting lamp includes a bonded metal piece that can be conveniently used for electrical or mechanical coupling or positioning of the lamp with respect to a base.

High pressure lamp bulb and method of induction sealing

A method for making a ceramic body is provided wherein the ceramic components are joined in their green state. The method includes applying heat to the surfaces to be joined to cause a localized melting of the binder. The surfaces are then brought together and joined by alternately applying compression and stretching. The method is particularly advantageous for forming unitary ceramic arc tube bodies for high intensity discharge (HID) lighting applications.

Growing community of inventors

Marblehead, MA, United States of America

Gregory Zaslavsky