Mark J Greiner

US Patent:

7095026, Aug 22, 2006

Filed:

Nov 6, 2003

Appl. No.:

10/703136

Inventors:

John W. Devitt - Maineville OH, US
Mark E. Greiner - Mason OH, US
Jeffrey J. Voelker - Butler PA, US
David R. Wade - Cincinnati OH, US

Assignee:

L-3 Communications Cincinnati Electronics Corporation - Mason OH

International Classification:

G01J 5/00

US Classification:

2503381

Abstract:

An apparatus for selectively limiting undesired radiation from a scene which, in one embodiment, includes an optic that is operative to attenuate radiation by selectively losing transparency in response to radiation within a first wavelength band from a source. The loss of transparency affects the passage through the optic of radiation within a second wavelength band from that source. The optic can be positioned between a sensor and the scene such that the sensor is configured to receive radiation from the scene through the optic. In one embodiment, an optical limiter includes a plurality of such optics, wherein the optical limiter is configured to facilitate transmission of light corresponding to a scene, and wherein each optic is configured to receive a respective portion of the light corresponding to a respective portion of the scene. A light detector assembly and a method of limiting light energy are also included.

US Patent:

7351977, Apr 1, 2008

Filed:

Nov 6, 2003

Appl. No.:

10/702702

Inventors:

John W. Devitt - Maineville OH, US
Mark E. Greiner - Mason OH, US
Jeffrey J. Voelker - Butler PA, US
David R. Wade - Cincinnati OH, US
Michael J. Garter - Liberty Township OH, US

Assignee:

L-3 Communications Cincinnati Electronics Corporation - Mason OH

International Classification:

G01J 5/02

US Classification:

250353

Abstract:

Methods and systems for detection of. One method includes receiving light of a predetermined wavelength range from a source, and splitting the received light into multiple components having differing wavelengths. The method further includes directing the components toward individual locations spaced from one another. In addition, this illustrative method includes detecting at least some of the components at the locations. One illustrative system includes a plurality of detectors provided along an image facing plane of an array, wherein each detector has a width less than or equal to that of its conesponding pixel location, wherein at least two detectors are located within a single pixel location, wherein the size of each pixel location is approximately equal to the blur spot or smallest visible spot for the focal plane array, and a plurality of light pipe regions, wherein at least two light pipe regions are located within a single pixel location.

US Patent:

50085239, Apr 16, 1991

Filed:

Sep 26, 1989

Appl. No.:

7/412715

Inventors:

Rex M. Davis - West Chester OH
Mark E. Greiner - Mason OH

Assignee:

Cincinnati Electronics Corporation - Cincinnati OH

International Classification:

H01J 4014

US Classification:

250214A

Abstract:

Current derived from an indium arsenide current generating photodetector is determined accurately, despite the presence of a variable resistance between terminals of the photodetector and the photodetector having leads with appreciable resistance connected to the detector terminals. Two leads are connected to each detector terminal. The two leads connected to one of the detector terminals are respectively connected to an inverting input terminal of an operational amplifier and to one terminal of a feedback resistor of the amplifier; the other terminal of the feedback resistor is connected to the amplifier output terminal. The two leads connected to the other terminal of the photodetector are respectively connected to the operational amplifier non-inverting input terminal and to ground. The operational amplifier derives an output voltage that accurately represents the output current of the photodetector, independently of the photodetector resistance and the lead wire resistance.

US Patent:

20210082992, Mar 18, 2021

Filed:

Sep 11, 2020

Appl. No.:

17/018944

Inventors:

- Mason OH, US
Daniel Chmielewski - Mason OH, US
Nansheng Tang - Mason OH, US
Darrel Endres - West Chester OH, US
Michael Garter - Lebanon OH, US
Mark Greiner - Loveland OH, US

Assignee:

L3 CINCINNATI ELECTRONICS CORPORATION - Mason OH

International Classification:

H01L 27/146

Abstract:

Methods of fabricating multicolor, stacked detector devices and focal plane arrays are disclosed. In one embodiment, a method of fabricating a stacked multicolor device includes forming a first detector by depositing a first detector structure on a first detector substrate, and depositing a first ground plane on the first detector structure, wherein the first ground plane is transmissive to radiation in a predetermined spectral band. The method further includes bonding an optical carrier wafer to the first ground plane, removing the first detector substrate, and forming a second detector. The second detector is formed by depositing a second detector structure on a second detector substrate, and depositing a second ground plane on the second detector structure. The method further includes depositing a dielectric layer on one of the first detector structure and the second ground plane, bonding the first detector to the second detector, and removing the second detector substrate.

US Patent:

20180294301, Oct 11, 2018

Filed:

May 4, 2018

Appl. No.:

15/971217

Inventors:

- Mason OH, US
Steven Allen - Mason OH, US
Michael Garter - Lebanon OH, US
Mark Greiner - Loveland OH, US
David Forrai - Centerville OH, US
Darrel Endres - West Chester OH, US
Robert Jones - Cincinnati OH, US

Assignee:

L3 Cincinnati Electronics Corporation - Mason OH

International Classification:

H01L 27/146
H01L 27/144

Abstract:

Focal plane arrays and infrared detector device having a transparent common ground structure and methods of their fabrication are disclosed. In one embodiment, a front-side illuminated infrared detector device includes a contact layer and a detector structure adjacent to the contact layer. The detector structure is capable of absorbing radiation. The front-side illuminated infrared detector device further includes a common ground structure adjacent the detector structure, wherein the common ground structure is transmissive to radiation having a wavelength is a predetermined spectral band, and the common ground structure has a bandgap that is wider than a bandgap of the detector structure. The front-side illuminated infrared detector device further includes an optical layer adjacent the common ground structure.

US Patent:

20180294309, Oct 11, 2018

Filed:

May 4, 2018

Appl. No.:

15/971183

Inventors:

- Mason OH, US
Steven Allen - Mason OH, US
Michael Garter - Lebanon OH, US
Mark Greiner - Loveland OH, US
David Forrai - Centerville OH, US
Darrel Endres - West Chester OH, US

Assignee:

L3 Cincinnati Electronics Corporation - Mason OH

International Classification:

H01L 27/146
H01L 27/144
H01L 31/0352
H01L 31/0304

Abstract:

Focal plane arrays and infrared detector device having a transparent common ground structure and methods of their fabrication are disclosed. In one embodiment, a front-side illuminated infrared detector device includes a contact layer and a detector structure adjacent to the contact layer. The detector structure is capable of absorbing radiation. The front-side illuminated infrared detector device further includes a common ground structure adjacent the detector structure, wherein the common ground structure is transmissive to radiation having a wavelength is a predetermined spectral band, and the common ground structure has a bandgap that is wider than a bandgap of the detector structure. The front-side illuminated infrared detector device further includes an optical layer adjacent the common ground structure.