James C Dolan

US Patent:

6469444, Oct 22, 2002

Filed:

Oct 2, 2000

Appl. No.:

09/647528

Inventors:

Yongzhang Leng - Damascus MD
James T. Dolan - Frederick MD
Bruce Shanks - Gaithersburg MD

Assignee:

Fusion Lighting, Inc. - Rockville MD

International Classification:

H01J 1720

US Classification:

313637, 313638

Abstract:

A discharge lamp for providing visible radiation includes a lamp envelope which is made of light transmissive material a fill in the envelope including either calcium halide or strontium halide together with either elemental sulfur or elemental selenium in gaseous form which is obtainable when the fill is excited by sufficient power in operation, in an amount such that the excited fill emits a discharge of visible radiation from the fill with substantially all of the radiation being molecular radiation which is emitted in the visible region of the spectrum. The calcium halide or strontium halide operates at a vapor pressure which provides a significant amount of radiation in the red region of the spectrum therefrom and the overall spectrum has a color rendering index of about 87 or more.

US Patent:

6617806, Sep 9, 2003

Filed:

Feb 6, 2001

Appl. No.:

09/776914

Inventors:

Douglas A. Kirkpatrick - Great Falls VA
James T. Dolan - Frederick MD
Donald A. MacLennan - Gaithersburg MD
Brian P. Turner - Damascus MD
James E. Simpson - Gaithersburg MD

Assignee:

Fusion Lighting, Inc. - Rockville MD

International Classification:

H05B 4116

US Classification:

315248, 315 39, 313113

Abstract:

An electrodeless microwave discharge lamp includes a source of microwave energy, a microwave cavity, a structure configured to transmit the microwave energy from the source to the microwave cavity, a bulb disposed within the microwave cavity, the bulb including a discharge forming fill which emits light when excited by the microwave energy, and a reflector disposed within the microwave cavity, wherein the reflector defines a reflective cavity which encompasses the bulb within its volume and has an inside surface area which is sufficiently less than an inside surface area of the microwave cavity. A portion of the reflector may define a light emitting aperture which extends from a position closely spaced to the bulb to a light transmissive end of the microwave cavity. Preferably, at least a portion of the reflector is spaced from a wall of the microwave cavity. The lamp may be substantially sealed from environmental contamination.

US Patent:

20020101191, Aug 1, 2002

Filed:

Nov 13, 2001

Appl. No.:

09/986971

Inventors:

James Dolan - Frederick MD, US
Kent Kipling - Gaithersburg MD, US
Michael Dubinovsky - Pembroke Pines FL, US

International Classification:

H05B041/16

US Classification:

315/248000

Abstract:

An electrodeless microwave discharge lamp includes a substantially sealed microwave cavity, an envelope disposed within the sealed cavity, the envelope containing a fill which emits light when excited by microwave energy, and means for circulating air inside the sealed microwave cavity. For example, the means for circulating air includes a ceramic reflector inside the cavity with defined air flow channels. The lamp may further include a fan for moving air through the defined air flow channels. For example, the envelope is adapted to rotate during operation and blades are mounted on the stem of the bulb inside the sealed cavity. A sealed light distribution system includes a hollow light pipe having an opening at one end and an annular ring of elastomeric material secured to the open end of the light pipe. When used with a lamp with a reflector, the reflector is received in the opening of the ring and the ring forms a seal around the outside of the reflector. Another light distribution system includes a multi layer light conduit having at least two full layers formed by a single spiral wound plastic sheet. Another light distribution system includes a reflector positioned to receive light from a light source to transform at least some of the light into shallow angle light relative to a light emitting wall of an enclosure. The light is distributed through the enclosure by specular reflection of the shallow angle light.

US Patent:

63104431, Oct 30, 2001

Filed:

Jul 14, 2000

Appl. No.:

9/616995

Inventors:

Donald A. MacLennan - Gaithersburg MD
Brian P. Turner - Damascus MD
Aleksandr Gitsevich - Gaithersburg MD
Gary K. Bass - Mt. Airy MD
James T. Dolan - Frederick MD
Kent Kipling - Gaithersburg MD
Douglas A. Kirkpatrick - Great Falls VA
Yongzhang Leng - Damascus MD
Izrail Levin - Silver Spring MD
Robert J. Roy - Frederick MD
Bruce Shanks - Gaithersburg MD
Malcolm Smith - Alexandria VA
William C. Trimble - Columbia MD
Peter Tsai - Olney MD

Assignee:

Fusion Lighting, Inc. - Rockville MD

International Classification:

H05B 4116

US Classification:

315248

Abstract:

A jacketed lamp bulb envelope includes a ceramic cup having an open end and a partially closed end, the partially closed end defining an aperture, a lamp bulb positioned inside the ceramic cup abutting the aperture, and a reflective ceramic material at least partially covering a portion of the bulb not abutting the aperture. The reflective ceramic material may substantially fill an interior volume of the ceramic cup not occupied by the bulb. The ceramic cup may include a structural feature for aiding in alignment of the jacketed lamp bulb envelope in a lamp. The ceramic cup may include an external flange about a periphery thereof. One example of a jacketed lamp bulb envelope includes a ceramic cup having an open end and a closed end, a ceramic washer covering the open end of the ceramic cup, the washer defining an aperture therethrough, a lamp bulb positioned inside the ceramic cup abutting the aperture, and a reflective ceramic material filling an interior volume of the ceramic cup not occupied by the bulb. A method of packing a jacketed lamp bulb envelope of the type comprising a ceramic cup with a lamp bulb disposed therein includes the steps of filling the ceramic cup with a flowable slurry of reflective material, and applying centrifugal force to the cup to pack the reflective material therein.

US Patent:

59777249, Nov 2, 1999

Filed:

Mar 3, 1997

Appl. No.:

8/811466

Inventors:

James T. Dolan - Frederick MD
Charles H. Wood - Rockville MD
Michael G. Ury - Bethseda MD

Assignee:

Fusion Lighting, Inc. - Rockville MD

International Classification:

H05B 3702

US Classification:

315248

Abstract:

The envelope of an electrodeless lamp which would tend to produce a discharge which does not substantially fill the interior of the envelope if the envelope is not rotated or is rotated at insufficient speed, is rotated at a high enough speed to cause the discharge to substantially fill the interior of the envelope.

US Patent:

57739188, Jun 30, 1998

Filed:

Jun 7, 1995

Appl. No.:

8/488279

Inventors:

James T. Dolan - Frederick MD
Michael G. Ury - Bethesda MD

Assignee:

Fusion Lighting, Inc. - Rockville MD

International Classification:

H01J 1720
H01J 6112
H01J 6118

US Classification:

313113

Abstract:

The spectral energy characteristic of a discharge lamp is controlled by changing the density of the fill substance. The spectral characteristic can be shifted while substantially maintaining its shape by changing the density of the fill. A sulfur or selenium containing discharge lamp which is operated at a pressure of at least about 1 atmosphere contains a low ionization potential substance in the fill. Characteristics which are improved are one or more of spatial color uniformity, extinguishing characteristics, and bulb starting reliability. Particular substances which are added to the fill are alkalai metal containing substances, III B metal containing substances, and alkaline earth metal containing substances. When light is reflected back into the bulb, the light which is re-emitted is stronger in the higher wavelengths.

US Patent:

57986118, Aug 25, 1998

Filed:

Nov 10, 1993

Appl. No.:

8/149818

Inventors:

James T. Dolan - Frederick MD
Michael G. Ury - Bethesda MD
Charles H. Wood - Rockville MD
Brian Turner - Myersville MD

Assignee:

Fusion Lighting, Inc. - Rockville MD

International Classification:

H01J 6118

US Classification:

313570

Abstract:

The spectral energy characteristic of a discharge lamp is controlled by changing the density of the fill substance. The spectral characteristic can be shifted while substantially maintaining its shape by changing the density of the fill. A sulfur or selenium containing discharge lamp which is operated at a pressure of at least about 1 atmosphere contains a low ionization potential substance in the fill. Characteristics which are improved are one or more of spatial color uniformity, extinguishing characteristics, and bulb starting reliability. Particular substances which are added to the fill are alkalai metal containing substances, III B metal containing substances, and alkaline earth metal containing substances. When light is reflected back into the bulb, the light which is re-emitted is stronger in the higher wavelengths.

US Patent:

55043917, Apr 2, 1996

Filed:

Jan 27, 1993

Appl. No.:

8/008783

Inventors:

Brian Turner - Myersville MD
James T. Dolan - Frederick MD

Assignee:

Fusion Systems Corporation - Rockville MD

International Classification:

H01J 6112
H01J 6120

US Classification:

313570

Abstract:

An excimer lamp utilizing a high pressure fill. The fill includes a halogen at an operating pressure of greater than about 350 torr or the combination of a halogen and a rare gas at a total operating pressure of greater than about 2. 5 atmospheres.