Mark Thomas Phillips

US Patent:

53714091, Dec 6, 1994

Filed:

Nov 16, 1993

Appl. No.:

8/153783

Inventors:

James O. McCaldin - San Diego CA
Thomas C. McGill - Pasadena CA
Mark C. Phillips - Pasadena CA

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

H01L 2300
H01L 2978

US Classification:

257741

Abstract:

Type-II semiconductor heterojunction light emitting devices formed on a substrate are described wherein a graded injection layer is used to accelerate electrons over the electron barrier formed by the junction. Further, wide band gap semiconductor LEDs and lasers are proposed formed of II-VI materials which emit light in the blue and green wavelengths. Particularly, a system composed of n-CdSe:Al/Mg. sub. x Cd. sub. 1-x Se/Mg. sub. y Zn. sub. 1-y Te/p-ZnTe are described where the value of y determines the wavelength of the emitted light in the green or blue region and x varies across the graded injection layer for raising the energy levels of excited electrons.

US Patent:

20180066961, Mar 8, 2018

Filed:

Sep 2, 2016

Appl. No.:

15/256168

Inventors:

ALEXANDER TRUSOV - WOODLAND HILLS CA, US
MARK R. PHILLIPS - CHARDON OH, US
GEORGE H. MCCAMMON - MOORPARK CA, US

Assignee:

NORTHROP GRUMMAN SYSTEMS CORPORATION - FALLS CHURCH VA

International Classification:

G01C 25/00
G01C 21/18

Abstract:

One embodiment describes an inertial system. The system includes a gyroscope system comprising a plurality of gyroscopes. The gyroscope system can be configured to provide rotation rate data associated with rotation of the plurality of gyroscopes about a respective plurality of sensitive axes. The system also includes a rotation sensor system configured to calculate navigation data based on the rotation rate data. The rotation sensor system includes a self-calibration component configured to designate a first gyroscope of the plurality of gyroscopes for self-calibration during operation of the inertial system and to inject a calibration input signal into the first gyroscope. The self-calibration component being configured to calibrate the first gyroscope based on the rotation rate data of the first gyroscope corresponding to the calibration input signal relative to the rotation rate data associated with a remaining at least one of the plurality of gyroscopes.

Address:

210 Monterey Dr, Wilmington, NC 28409

VIN:

1N4BA41E67C804969

Make:

NISSAN

Model:

MAXIMA

Year:

2007