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US 7,276,852 B2Granted
Lamp header with start-up conductor for an ultra high pressure bulb
AssigneeHewlett-Packard Development Company, L.P.
InventorsJohn M. Koegler, III, Luis Aldarondo
Life of this patent
Estimating the term…
Abstract
A lamp—suitable for use within a projector or other high-light output application—includes an ultra high pressure bulb. An extension from the bulb defines a start-up bubble. A conductor is carried by the extension of the ultra high pressure bulb, generally enclosing the start-up bubble, thereby exciting gas contained within the start-up bubble. A header defines a socket within which the extension and the conductor are carried.
Claims21
A lamp, comprising:
- an ultra high pressure bulb having an extension defining a start-up bubble;
- a conductor, carried by the extension of the ultra high pressure bulb and generally enclosing the start-up bubble, wherein the conductor is configured to excite gas within the start-up bubble;
- and
- a header defining a socket within which the extension and the conductor are carried, wherein the header comprises:
- a cylindrical body within which the socket is defined;
- and
- a base carried by a closed end of the cylindrical body.
4 more elements
A lamp assembly, comprising:
- an ultra high pressure bulb;
- and
- a header assembly, comprising:
- a tube defining a socket sized to accept an extension of the ultra high pressure bulb;
- a conductor configured against an inside surface of the socket;
- an adhesive layer to surround and electrically insulate the conductor;
- and
- a base, carried by a closed end of the tube, wherein the base portion includes at least two electrical contacts;
- wherein the header assembly is configured for releasable attachment to a reflector.
6 more elements
A method of manufacturing an ultra high pressure bulb assembly, comprising:
- installing a conductor within a socket defined within a lamp header;
- installing an extension of the ultra high pressure bulb into the socket,
- wherein a start up bubble, defined in the extension, is located within a region defined by the conductor;
- and
- securing the conductor and the extension to the socket with a layer of adhesive, wherein the layer of adhesive and the extension are substantially electrically non-conductive;
- wherein the socket portion of the lamp header is sized for insertion into an opening defined in a center of a reflector, and a base portion of the lamp header, which closes one end of the socket defined in the lamp header, is too large to pass through the opening and seats against the opening outside the reflector, wherein the lamp header is attached in a releasable manner to a reflector and provides at least two electrical contacts.
3 more elements
A method of changing a failed ultra high pressure bulb assembly, comprising:
- separating the failed ultra high pressure bulb assembly from a reflector;
- installing a new ultra high pressure bulb assembly, wherein the new ultra high pressure bulb assembly comprises:
- an ultra high pressure bulb defining a start-up bubble to emit UV light to reduce a start-up voltage required by the new ultra high pressure bulb;
- a conductor, carried by an extension of the ultra high pressure bulb, and secured in place by an insulating layer of adhesive;
- and
- a header assembly comprising a tube defining a socket sized to accept the extension, wherein the tube defines a cavity within which the extension and conductor are carried and wherein a base having at least two electrical contacts closes an end of the tube;
- and reusing the reflector.
4 more elements
An ultra high pressure bulb assembly, comprising:
- a header assembly comprising a tube defining a socket sized to accept a portion of the ultra high pressure bulb, wherein the tube is sized to pass through a hole defined in a reflector, and a base having at least two electrical contacts and configured to close an end of the tube and sized to seat outside the reflector, against a rim of the hole;
- an extension, extending from an ultra high pressure bulb, sized for insertion into the socket;
- a conductor, carried against a sidewall defining the socket, for exciting gas within a start-up bubble defined within the extension and
- adhesive for securing the conductor and the extension to the header.
1 more element
Dependencies are inferred from the claim text.