Robert S Regan

US Patent:

43396909, Jul 13, 1982

Filed:

Aug 1, 1980

Appl. No.:

6/174472

Inventors:

Robert J. Regan - Needham MA
Adrian Cogan - Waltham MA
Carl F. Buhrer - Framingham MA

Assignee:

GTE Laboratories Incorporated - Waltham MA

International Classification:

H05B 4114

US Classification:

315 97

Abstract:

Energy-saving circuitry for a rapid-start fluorescent lighting system includes a reactance-modifying capacitor coupled in series with first and second fluorescent lamps and includes a filament switch which is operative to conduct filament heating current during starting of the first lamp. The filament switch is coupled between filaments at opposite ends of the first fluorescent lamp and triggers to a low impedance state in response to the lamp starting voltage. A capacitor bypass switch can be coupled in parallel with the reactance-modifying capacitor to reduce the impedance of the series circuit during lamp starting.

US Patent:

40016323, Jan 4, 1977

Filed:

Apr 21, 1975

Appl. No.:

5/570113

Inventors:

Paul Osborne Haugsjaa - Acton MA
Robert James Regan - Needham MA

Assignee:

GTE Laboratories Incorporated - Waltham MA

International Classification:

H05B 4124

US Classification:

315 39

Abstract:

A light source includes an electrodeless lamp having an envelope for enclosing a volatile fill material which emits light upon vaporization and excitation, a source of power at a high frequency and a termination fixture coupled to the source. The fixture has inner and outer conductors which have dimensions such that the lamp is located in the high field region at the end of the conductors. When the high frequency power is applied to the fixture, a voltage standing wave is formed which initiates vaporization and excitation of the fill material. The termination load impedance which is that of the lamp changes from a lossy open circuit to a finite value when vaporization and excitation occur. An impedance matching device is provided for matching the running lamp impedance to the output impedance of the source.

US Patent:

42661625, May 5, 1981

Filed:

Mar 16, 1979

Appl. No.:

6/021125

Inventors:

William H. McNeill - Carlisle MA
Alfred E. Feuersanger - Framingham MA
Paul O. Haugsjaa - Acton MA
Robert J. Regan - Needham MA

Assignee:

GTE Laboratories Incorporated - Waltham MA

International Classification:

H01J 746
H01J 1180

US Classification:

315 39

Abstract:

An electromagnetic discharge apparatus has a power coupling fixture which couples power to both ends of an electrodeless discharge vessel and produces a substantially uniform arc. Power can be coupled to the fixture from two high frequency power sources or can be coupled from a single high frequency power source by using a power divider. If power is coupled to the electrodeless discharge vessel from a single source, power transfer to the vessel is optimized when the electrical length of the circuit is an integral number of wavelengths. In an alternative embodiment, a second coupler is utilized in a conventional electrodeless light source to shape the electric fields and produce a more uniform arc.

US Patent:

48885282, Dec 19, 1989

Filed:

Sep 6, 1988

Appl. No.:

7/243118

Inventors:

Wojciech W. Byszewski - Concord MA
Scott J. Butler - Rochdale MA
Robert J. Regan - Needham MA
Joseph M. Proud - Wellesley Hills MA

Assignee:

GTE Laboratories Incorporated - Waltham MA

International Classification:

H05B 4100

US Classification:

315344

Abstract:

Ignition of high intensity discharge (HID) lamps can be enhanced by the application of ultrahigh frequency (UHF) electric fields at modest power levels. The implementation of UHF power assisted starting offers considerable advantage over known prior art lower frequency power starting methods. Solid state circuits and coupled means can be utilized as described therein.

US Patent:

47876964, Nov 29, 1988

Filed:

Dec 18, 1987

Appl. No.:

7/135808

Inventors:

Peter E. Norris - Cambridge MA
Robert J. Regan - Needham MA

Assignee:

GTE Laboratories Incorporated - Waltham MA

International Classification:

G02B 636
G02B 726

US Classification:

350 9620

Abstract:

Apparatus for supporting a group of optical fibers in proper alignment with associated laser devices and rear-facet photodetectors. The photodetectors and grooves for supporting the optical fibers are fabricated in a carrier member of device quality silicon. An array of a row of laser devices is moved laterally along a slot in the carrier member transverse to the grooves so as to align each laser device with a groove and with a photodetector. One or more carrier members may be mounted on a supporting structure adapted to receive them.

US Patent:

45904367, May 20, 1986

Filed:

Apr 27, 1984

Appl. No.:

6/604778

Inventors:

Scott J. Butler - Auburn MA
Robert J. Regan - Needham MA
Anthony B. Varallo - Lynn MA

Assignee:

GTE Laboratories Incorporated - Waltham MA

International Classification:

H03F 326
H03F 368

US Classification:

330277

Abstract:

High voltage, high frequency amplifier employing power transistors. The amplifier provides parallel ac signal amplification paths through each transistor and a single dc power path through the transistors in series. In one embodiment two FET's have their gate electrodes connected to an input terminal and their drain electrodes connected to an output terminal so as to provide two parallel ac amplifying paths while blocking dc current flow. The drain electrode of the first FET is connected through an RF choke to a source of dc operating potential, and its source electrode is connected through an RF choke to the drain electrode of the second FET. The source electrode of the second FET is connected to ground through a zener diode. A single dc conductive path is thus provided between the source of operating potential and ground through the two FET's in series.

US Patent:

39434010, Mar 9, 1976

Filed:

Apr 21, 1975

Appl. No.:

5/570111

Inventors:

Paul Osborne Haugsjaa - Acton MA
Robert James Regan - Needham MA
William Henry McNeill - Carlisle MA

Assignee:

GTE Laboratories Incorporated - Waltham MA

International Classification:

H01J 6156

US Classification:

315 39

Abstract:

A lamp holding fixture for exciting an electrodeless lamp by high frequency power has a switchable characteristic impedance for impedance matching the lamp to the power source during both the starting and operating modes. The fixture has an inner conductor and two outer conductors of different dimensions in cross section. During the starting mode the inner conductor and the larger diameter outer conductor form the power coupling conductors for the fixture thereby providing a high characteristic impedance for matching the lamp impedance to the source output impedance. After starting, the smaller diameter outer conductor may be moved along its longitudinal axis until it contacts the power coupling end of the larger diameter outer conductor so that the inner conductor and the smaller diameter outer conductors form the power coupling conductors during the operating mode.

US Patent:

40016315, Jan 4, 1977

Filed:

Nov 17, 1975

Appl. No.:

5/632328

Inventors:

William McNeill - Carlisle MA
Joseph Lech - Westford MA
Paul Haugsjaa - Acton MA
Robert Regan - Newton MA

Assignee:

GTE Laboratories Incorporated - Waltham MA

International Classification:

H01J 746
H01J 1980

US Classification:

315 39

Abstract:

A light source includes a source of high frequency power, an electrodelsss lamp and a termination fixture for coupling power to the lamp, the fixture having an outer conductor and an inner conductor whose length is adjustable for providing dynamic matching of the impedance of the lamp during the operating mode to the output impedance of the source. Variations in the power level from the source, such as is desirable in providing lamp brightness selectivity, vary both the real and imaginary components of the lamp impedance, and corresponding adjustments of the inner conductor length provide a tuning technique to compensate for these variations.