Patents by Inventor Richard Lee Kendrick
Richard Lee Kendrick has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11703317Abstract: A digital measuring device implemented on a photonic integrated circuit, the digital measuring device including a laser source configured to provide light, a first ring resonator configured to produce a first frequency comb of light from the laser source, wherein at least a portion of the first frequency comb of light is directed at a moving object, a local oscillator configured to provide a reference beam, at least one waveguide structure configured to combine the reference beam with light reflected from the moving object to produce a measurement beam, a first multiplexer configured to split the measurement beam into a plurality of channels spaced in frequency, and a plurality of detectors configured to detect an intensity value of each channel of the plurality of channels to measure a distance between the digital measuring device and the moving object.Type: GrantFiled: December 21, 2021Date of Patent: July 18, 2023Assignee: RAYTHEON COMPANYInventors: Richard Lee Kendrick, Joseph Marron
-
Publication number: 20220187055Abstract: A digital measuring device implemented on a photonic integrated circuit, the digital measuring device including a laser source configured to provide light, a first ring resonator configured to produce a first frequency comb of light from the laser source, wherein at least a portion of the first frequency comb of light is directed at a moving object, a local oscillator configured to provide a reference beam, at least one waveguide structure configured to combine the reference beam with light reflected from the moving object to produce a measurement beam, a first multiplexer configured to split the measurement beam into a plurality of channels spaced in frequency, and a plurality of detectors configured to detect an intensity value of each channel of the plurality of channels to measure a distance between the digital measuring device and the moving object.Type: ApplicationFiled: December 21, 2021Publication date: June 16, 2022Inventors: Richard Lee Kendrick, Joseph Marron
-
Patent number: 11320255Abstract: A digital measuring device implemented on a photonic integrated circuit, the digital measuring device including a tunable laser source implemented on the photonic integrated circuit configured to sweep over a frequency range to provide multi-wavelength light, a first waveguide structure implemented on the photonic integrated circuit configured to direct a first portion of light from the laser source at a moving object and receive light reflected from the moving object, a second waveguide structure implemented on the photonic integrated circuit configured to combine a second portion of light from the laser source with the light reflected from the moving object to produce a measurement beam, and a first detector implemented on the photonic integrated circuit configured to detect intensity values of the measurement beam to measure a distance between the digital measuring device and the moving object.Type: GrantFiled: August 11, 2020Date of Patent: May 3, 2022Assignee: RAYTHEON COMPANYInventors: Richard Lee Kendrick, Joseph Marron
-
Publication number: 20220049945Abstract: A digital measuring device implemented on a photonic integrated circuit, the digital measuring device including a tunable laser source implemented on the photonic integrated circuit configured to sweep over a frequency range to provide multi-wavelength light, a first waveguide structure implemented on the photonic integrated circuit configured to direct a first portion of light from the laser source at a moving object and receive light reflected from the moving object, a second waveguide structure implemented on the photonic integrated circuit configured to combine a second portion of light from the laser source with the light reflected from the moving object to produce a measurement beam, and a first detector implemented on the photonic integrated circuit configured to detect intensity values of the measurement beam to measure a distance between the digital measuring device and the moving object.Type: ApplicationFiled: August 11, 2020Publication date: February 17, 2022Inventors: Richard Lee Kendrick, Joseph Marron
-
Publication number: 20220019019Abstract: A digital measuring device implemented on a photonic integrated circuit, the digital measuring device including a laser source implemented on the photonic integrated circuit configured to provide light, a first waveguide structure implemented on the photonic integrated circuit configured to direct a first portion of light from the laser source at a moving object and receive light reflected from the moving object, a second waveguide structure implemented on the photonic integrated circuit configured to combine a second portion of light from the laser source with the light reflected from the moving object to produce a measurement beam, a first multiplexer implemented on the photonic integrated circuit configured to split the measurement beam into a plurality of channels, and a plurality of detectors implemented on the photonic integrated circuit configured to detect an intensity value of each channel to measure a distance between the digital measuring device and the moving object.Type: ApplicationFiled: July 15, 2020Publication date: January 20, 2022Applicant: RAYTHEON COMPANYInventors: Richard Lee Kendrick, Joseph Marron
-
Patent number: 11221204Abstract: A digital measuring device implemented on a photonic integrated circuit, the digital measuring device including a laser source configured to provide light, a first ring resonator configured to produce a first frequency comb of light from the laser source, wherein at least a portion of the first frequency comb of light is directed at a moving object, a local oscillator configured to provide a reference beam, at least one waveguide structure configured to combine the reference beam with light reflected from the moving object to produce a measurement beam, a first multiplexer configured to split the measurement beam into a plurality of channels spaced in frequency, and a plurality of detectors configured to detect an intensity value of each channel of the plurality of channels to measure a distance between the digital measuring device and the moving object.Type: GrantFiled: August 11, 2020Date of Patent: January 11, 2022Assignee: RAYTHEON COMPANYInventors: Richard Lee Kendrick, Joseph Marron
-
Patent number: 11102426Abstract: An apparatus includes a first light source to produce a first reference light, a first pair of arrayed waveguide gratings (AWGs) to demultiplex a first optical signal and the first reference light, respectively, into multiple first signal beams and multiple first reference beams. A first heterodyne optical detector can mix the multiple first signal beams and the multiple first reference beams to generate first quadrature optical signals. A first pair of photo-detectors can convert the first quadrature optical signals to first in-phase (I) and quadrature (Q) electrical signals. The apparatus is implemented as a photonic integrated circuit (PIC) incorporating the first pair of AWGs, the first heterodyne optical detector and the first pair of photo-detectors.Type: GrantFiled: May 18, 2018Date of Patent: August 24, 2021Assignee: Lockheed Martin CorporationInventors: Richard Lee Kendrick, Alan Lee Duncan
-
Patent number: 10753796Abstract: An apparatus includes multiple photonic integrated circuit (PIC) optical spectrometers, and an imaging plane coupled to the PIC optical spectrometers. Each PIC optical spectrometer includes multiple semiconductor chip layers. Each semiconductor chip layer includes multiple arrayed waveguide gratings (AWGs) and a number of on-chip optical detectors.Type: GrantFiled: October 3, 2017Date of Patent: August 25, 2020Assignee: LOCKHEED MARTIN CORPORATIONInventors: Alan Lee Duncan, Richard Lee Kendrick
-
Patent number: 10302409Abstract: An apparatus includes a number of photonic integrated circuit (PIC) imaging detector arrays, and multiple electronic integrated circuits (ICs) coupled to the PIC imaging detector arrays. Each PIC imaging detector array of includes a number of lenslets and a number of waveguides. At least some of the lenslets are coupled to multiple waveguides, and sets of two lenslets are configured to form interferometer channels.Type: GrantFiled: October 20, 2017Date of Patent: May 28, 2019Assignee: Lockheed Martin CorporationInventors: Alan Lee Duncan, Richard Lee Kendrick
-
Patent number: 10012827Abstract: A device for combined-zoom interferometric imaging includes a number of first blades and second blades. Each of the first blades includes multiple first optical elements arranged in a first linear configuration for high-resolution interferometric imaging. Each of the second blades includes multiple second optical elements arranged in a second linear configuration for low-resolution interferometric imaging. Pairs of the first optical elements with different baseline lengths are coupled through a first array of optical waveguides to an optical processor. Pairs of the second optical elements with different baseline lengths are coupled through a second array of optical waveguides to the optical processor.Type: GrantFiled: May 12, 2016Date of Patent: July 3, 2018Assignee: LOCKHEED MARTIN CORPORATIONInventors: Alan L. Duncan, Richard Lee Kendrick
-
Patent number: 8913859Abstract: A device for interferometric imaging may comprise multiple optical elements arranged in a linear configuration. The device may also comprise multiple waveguide arrays (WGAs) each WGA of the multiple WGAs may include one or more WGs. Some of the WGs of each WGA of the multiple WGAs may be optically coupled to an optical element of the multiple optical elements. Each WG of a first WGA of the multiple WGAs is coupled to a first optical element of the multiple optical elements and is paired with a WG of a second WGA of the multiple WGAs that is coupled to second optical element of the multiple optical elements. The lengths of the paired WGs of the first and second WGAs of the multiple WGAs are not equal.Type: GrantFiled: April 10, 2012Date of Patent: December 16, 2014Assignee: Lockheed Martin CorporationInventors: Alan L. Duncan, Richard Lee Kendrick
-
Patent number: 7352470Abstract: A spectrometer that implements the functionality of a Fizeau interferometer, the spectrometer including a collection device that is configured to collect a wavefront, a deformable mirror disposed at an image plane of the collection device, the deformable mirror having a plurality of sections, at least one of which is deformed to form interference patterns on the wavefront at the image plane, and a Fourier transformation module configured to derive spectral information from the interference patterns.Type: GrantFiled: February 28, 2005Date of Patent: April 1, 2008Assignee: Lockheed Martin CorporationInventors: Richard Lee Kendrick, Eric H. Smith
-
Patent number: 7092103Abstract: A method for reducing a piston between a plurality of optical-collection devices configured to operate as a single optical device, such that the optical-collection devices are configured to capture select portions of a wavefront. The method includes pistoning an adjustable-optical path of at least one of the optical-collection devices through a plurality of steps; collecting a set of focused images and a set of defocused images for each step; Fourier transforming the first and second sets of images to generate respective first and second sets of spectral information for the wavefronts; deriving a set of wavefront errors based on the first and second sets of spectral information using a phase diversity algorithm; and deriving a piston value for the piston from the wavefront errors using a multi-color interferometry algorithm.Type: GrantFiled: April 9, 2004Date of Patent: August 15, 2006Assignee: Lockheed Martin CorporationInventors: Richard Lee Kendrick, Eric H. Smith
-
Patent number: 7034945Abstract: A spectrometer configured to extract spectral information from a wavefront. The spectrometer includes a first collection device that includes an adjustable-optical path and configured to collect a first portion of a wavefront; a second collection device configured to collect a second portion of the wavefront; combiner optics configured to interfere the first and second portions of the wavefront at an image plane of the first and second collector devices to form interference patterns at the image plane; and a Fourier transformation module configured to derive spectral information from the interference patterns.Type: GrantFiled: July 25, 2003Date of Patent: April 25, 2006Assignee: Lockheed Martin CorporationInventors: Richard Lee Kendrick, Eric H. Smith
-
Patent number: 6787747Abstract: A phase diversity wavefront correction system for use in a multiple aperture optical imaging system forms an in-focus image as a composite, focused image from the multiple apertures of the system and also forms an additional image which is deliberately made out of focus to a known extent. Taken together, the two images are processed to create one or more metrics, such as the power metric and sharpness metric. Neural networks are provided, each having an output corresponding to a parameter of an aperture of the imaging system, such as a piston position (axial displacement) or tip/tilt (angular displacement) of one telescope with respect to the others in the system.Type: GrantFiled: September 24, 2002Date of Patent: September 7, 2004Assignee: Lockheed Martin CorporationInventors: Donald Francis Specht, Richard Lee Kendrick, Vassilis George Zarifis
-
Publication number: 20040095580Abstract: A spectrometer configured to extract spectral information from a wavefront. The spectrometer includes a first collection device that includes an adjustable-optical path and configured to collect a first portion of a wavefront; a second collection device configured to collect a second portion of the wavefront; combiner optics configured to interfere the first and second portions of the wavefront at an image plane of the first and second collector devices to form interference patterns at the image plane; and a Fourier transformation module configured to derive spectral information from the interference patterns.Type: ApplicationFiled: July 25, 2003Publication date: May 20, 2004Applicant: Lockheed Martin CorporationInventors: Richard Lee Kendrick, Eric H. Smith
-
Publication number: 20040056174Abstract: A phase diversity wavefront correction system for use in a multiple aperture optical imaging system forms an in-focus image as a composite, focused image from the multiple apertures of the system and also forms an additional image which is deliberately made out of focus to a known extent. Taken together, the two images are processed to create one or more metrics, such as the power metric and sharpness metric. Neural networks are provided, each having an output corresponding to a parameter of an aperture of the imaging system, such as a piston position (axial displacement) or tip/tilt (angular displacement) of one telescope with respect to the others in the system.Type: ApplicationFiled: September 24, 2002Publication date: March 25, 2004Inventors: Donald Francis Specht, Richard Lee Kendrick, Vassilis George Zarifis
-
Patent number: 5905591Abstract: A multi-aperture imaging system for continuous dwell imaging of complex extended scenes which are not required to contain localized point sources. The multi-aperture imaging system includes a plurality of subaperture telescopes, each of which collect image data of an instantaneous field of view of an extended object scene within a field of regard of the imaging system. The image data collected by each subaperture telescope is transferred by respective optical delay paths to a beam combiner which combines all the image data in coherent fashion to form a single high resolution image of said object scene at a focal plane of the beam combiner. The subaperture telescopes are optically phased using phase diversity techniques which include using a phase diversity sensor located at the focal plane of the beam combiner to detect wavefront errors in the collected images.Type: GrantFiled: February 18, 1997Date of Patent: May 18, 1999Assignee: Lockheed Martin CorporationInventors: Alan L. Duncan, Richard Lee Kendrick, Robert D. Sigler