Kenneth A King

US Patent:

56756771, Oct 7, 1997

Filed:

May 26, 1995

Appl. No.:

8/451625

Inventors:

John M. Davenport - Lyndhurst OH
Mark E. Duffy - Shaker Heights OH
Richard L. Hansler - Pepper Pike OH
Kenneth S. King - Willoughby Hills OH
William J. Cassarly - Richmond Heights OH
Thomas G. Parham - Gates Mills OH
Gary R. Allen - Chesterland OH
James T. Dakin - Shaker Heights OH
Frederic F. Ahlgren - Euclid OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

G02B 632

US Classification:

385 31

Abstract:

A lamp-to-light guide coupling arrangement includes an electrodeless high intensity discharge lamp comprising an arc tube with an ionizable fill, and an excitation circuit for electrically exciting the ionizable fill to induce therein a light-producing arc discharge. The coupling arrangement further includes a coupling device comprising a generally tubular, hollow body that has an inlet end for receiving light from the arc discharge and a larger, outlet end. The coupling device further comprises an interiorly directed reflector on a surface of the hollow body for reflecting visible light. Such coupling device is shaped so as to receive light at one solid angle over an area of the inlet end and to transmit light at a smaller solid angle but over a larger area of the outlet end. The coupling device is preferably formed from dielectric material. The reflector preferably comprises a refractory optical interference filter.

US Patent:

53174844, May 31, 1994

Filed:

Feb 1, 1993

Appl. No.:

8/011562

Inventors:

John M. Davenport - Lyndhurst OH
Richard L. Hansler - Pepper Pike OH
Kenneth S. King - Willoughby Hills OH
William J. Cassarly - Clifton Park NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

F21V 706

US Classification:

362 32

Abstract:

Improved collection optics for a lighting system comprised of a light source, reflector and light receptive component include a multi-portion reflector or a non-imaging optical collector having a positive curvature located at an input end to the light receptive component. The collection optics capture additional lumens for transmission through the light guide. The optical arrangement can also collect different colors of light from the source that would otherwise be omitted from transmission through the light receptive component.

US Patent:

55504345, Aug 27, 1996

Filed:

May 23, 1994

Appl. No.:

8/247832

Inventors:

Kenneth J. King - Palatine IL
Robert M. Zawislak - Palatine IL
Richard C. Vokoun - Palatine IL

Assignee:

Northrop Corporation - Los Angeles CA

International Classification:

H05B 3702

US Classification:

315160

Abstract:

Electrical activation of an arc lamp is accomplished by a plurality of circuits, each of which has a boost topology including a capacitor and a charging circuit for charging the capacitor by a series of current pulses. One of the circuits is an igniter circuit and includes a transformer to convert voltage from a relatively low voltage supply to a relatively high voltage for striking an arc within the lamp. A second of the circuits provides for a steady flow of current to maintain the arc after completion of ignition of the arc. The second circuit is protected from the high voltage of the first circuit by a saturable reactor connected in series between the second circuit and the arc lamp. A further circuit, employed as boost modulator, and constructed with the same form of boost topology, may be connected via a diode to a junction between the saturable reactor and the second of the foregoing circuits, the third circuit being useful for providing substantially larger amounts of plasma current, when desired, than such plasma current as can be provided by the second circuit. Also, if desired, the second circuit can include means for varying amplitudes of charging current pulses in response to an external signal, such as an audio signal, thereby to allow for communication of data on a beam of radiation emitted by the arc lamp.

US Patent:

54795451, Dec 26, 1995

Filed:

Mar 27, 1992

Appl. No.:

7/859176

Inventors:

John M. Davenport - Lyndhurst OH
Richard L. Hansler - Pepper Pike OH
Kenneth S. King - Willoughby Hills OH
John W. Munk - Chesterland OH
Richard C. Nagle - Euclid OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

G02B 626

US Classification:

385 43

Abstract:

An optical coupling assembly is useful for coupling a source of light, having high brightness and being non-coherent and focussed at a focal plane, to a plurality of optical light conductors. The coupling assembly includes an elongated light transmissive coupling member which has a central longitudinal axis and is disposed between the focal plane of the light source and leading ends of the optical light conductors. The coupling member includes oppositely flared front and rear end portions and a middle portion disposed along the longitudinal axis, with the middle portion extending between and connected to the front and rear end portions. The coupling member can have either a solid or tubular configuration. The middle portion of the coupling member has cylindrical shape and cross-sectional size of uniform dimensions and being less than the respective cross-sectional sizes of an inlet end of the front end portion and an outlet end of the rear end portion. The front end portion of the coupling member can have either a frusto-conical or parabolic shape, whereas the rear end portion can have a frusto-conical or parabolic shape being oriented in the reverse of the frusto-conical or parabolic shape of the front end portion.

US Patent:

51990911, Mar 30, 1993

Filed:

Dec 13, 1991

Appl. No.:

7/806381

Inventors:

John M. Davenport - Lyndhurst OH
William W. Finch - Ann Arbor MI
Richard L. Hansler - Pepper Pike OH
John L. Henkes - Latham NY
Kenneth S. King - Willoughby Hills OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

G02B 626

US Classification:

385 39

Abstract:

A light coupling arrangement for efficiently coupling a light source to a light distribution arrangement includes a solid optical coupling device constructed of a light transmissive material and configured in an essentially planar manner such that the length and width dimensions are significantly greater than the depth dimension. An aperture is formed on at least one side along the equatorial surface of the optical coupling device and allows connection to the light distribution arrangement. A bore, formed in the optical coupling device and having a flat polished surface, houses the light source in a manner such that the optical coupling device can act as a heat sink for the light source.

US Patent:

56916078, Nov 25, 1997

Filed:

Apr 26, 1996

Appl. No.:

8/638458

Inventors:

Robert Matthew Zawislak - Palatine IL
Kenneth John King - Algonquin IL
John Michael Rein - Elgin IL
Jeffrey Coe Perkins - Island Lake IL

Assignee:

Northrop Grumman Corporation - Los Angeles CA

International Classification:

G05F 100

US Classification:

315308

Abstract:

A single-stage modular modulator for pulsed illumination sources uses a full-range converter which converts unregulated DC to a 40-50 kHz carrier modulated at a frequency of a few hundred to a few thousand hertz. The modulated carrier is applied to the illumination source through a step-down transformer followed by a low-pass filter circuit which removes the carrier. The converter is controlled by a modulation control which uses an instantaneous load current signal feedback to follow a modulation commend signal, and a current mode signal representing the primary current of the transformer to compensate for converter output variations caused by input voltage variations.

US Patent:

52586910, Nov 2, 1993

Filed:

Jun 10, 1992

Appl. No.:

7/897601

Inventors:

James T. Dakin - Shaker Heights OH
Kenneth S. King - Willoughby Hills OH
Gary R. Allen - Chesterland OH

Assignee:

General Electric Company - Schnectady NY

International Classification:

H01J 1704
H01J 516
H01J 6104

US Classification:

313620

Abstract:

Asymmetric discharge electrode means are provided for a metal halide lamp enabling improved operation at acoustic frequencies. A xenon-metal halide lamp employing such improved discharge electrode means is disclosed together with a reflector lamp unit employing such lamp construction for its light source.

US Patent:

53433670, Aug 30, 1994

Filed:

Dec 14, 1992

Appl. No.:

7/990400

Inventors:

John M. Davenport - Lyndhurst OH
Richard L. Hansler - Pepper Pike OH
Kenneth S. King - Willoughby Hills OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

F21V 800

US Classification:

362 32

Abstract:

A projection headlamp system for a vehicle includes a high beam subsystem and a low beam subsystem. Each of the high and low beam subsystems includes a pair of light pattern projecting arrangements, a remote single arc discharge light source, a pair of solid optical coupling devices, and a pair of elongated light distributing conductors coupled at output ends to the pair of light pattern projecting arrangements and coupled at input ends to the pair of solid optical coupling devices. The high and low beam subsystems employ either separate single arc discharge light sources or a common single arc discharge light source.