Patents by Inventor Michael P. Chrisp
Michael P. Chrisp 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).
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Patent number: 10408725Abstract: Methods and apparatuses are provided that greatly expand the utility of conventional hollow waveguide-based sensors via either straight, substrate-integrated channels or via meandering (e.g., circuitous, curved or folded optical paths) waveguide sensor designs. Full- or hybrid-integration of the meandering hollow waveguide with light source, detector, and light-guiding optics facilitates compact yet high-performance gas/vapor and/or liquid sensors of the substrate-integrated hollow waveguide sensor.Type: GrantFiled: September 29, 2012Date of Patent: September 10, 2019Assignee: Lawrence Livermore National Security, LLCInventors: Jerry Chance Carter, Michael P. Chrisp, Anastacia M. Manuel, Boris Mizaikoff, Andreas Wilk, Seong-Soo Kim
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Patent number: 9689744Abstract: An imaging spectrometer, covering the visible through infrared wavelengths, which disperses the light by a plane diffraction grating behind a wedged optical element. This design uses an achromatic doublet lens with a reflective coating on its convex back surface to produce the spectra on a flat detector. Spatial keystone distortion and spectral smile are controlled to less than one tenth of a pixel over the full wavelength range, facilitating the use of simple retrieval algorithms.Type: GrantFiled: July 10, 2014Date of Patent: June 27, 2017Assignee: Massachusetts Institute of TechnologyInventor: Michael P. Chrisp
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Publication number: 20150021480Abstract: An imaging spectrometer, covering the visible through infrared wavelengths, which disperses the light by a plane diffraction grating behind a wedged optical element. This design uses an achromatic doublet lens with a reflective coating on its convex back surface to produce the spectra on a flat detector. Spatial keystone distortion and spectral smile are controlled to less than one tenth of a pixel over the full wavelength range, facilitating the use of simple retrieval algorithms.Type: ApplicationFiled: July 10, 2014Publication date: January 22, 2015Inventor: Michael P. Chrisp
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Patent number: 8740168Abstract: A focal plane assembly facilitates a molybdenum base plate being mounted to another plate made from aluminum. The molybdenum pin is an interference fit (press fit) in the aluminum base plate. An annular cut out area in the base plate forms two annular flexures.Type: GrantFiled: March 14, 2011Date of Patent: June 3, 2014Assignee: Lawrence Livermore National Security, LLC.Inventors: William E. Hunt, Jr., Michael P. Chrisp
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Patent number: 8736836Abstract: A cryogenically cooled imaging spectrometer that includes a spectrometer housing having a first side and a second side opposite the first side. An entrance slit is on the first side of the spectrometer housing and directs light to a cross-disperser grating. An echelle immersions grating and a catadioptric lens are positioned in the housing to receive the light. A cryogenically cooled detector is located in the housing on the second side of the spectrometer housing. Light from the entrance slit is directed to the cross-disperser grating. The light is directed from the cross-disperser grating to the echelle immersions grating. The light is directed from the echelle immersions grating to the cryogenically cooled detector on the second side of the spectrometer housing.Type: GrantFiled: April 13, 2011Date of Patent: May 27, 2014Assignee: Lawrence Livermore National Security, LLC.Inventors: Michael P. Chrisp, Joel M. Bowers
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Publication number: 20130081447Abstract: Methods and apparatuses are provided that greatly expand the utility of conventional hollow waveguide-based sensors via either straight, substrate-integrated channels or via meandering (e.g., circuitous, curved or folded optical paths) waveguide sensor designs. Full- or hybrid-integration of the meandering hollow waveguide with light source, detector, and light-guiding optics facilitates compact yet high-performance gas/vapor and/or liquid sensors of the substrate-integrated hollow waveguide sensor.Type: ApplicationFiled: September 29, 2012Publication date: April 4, 2013Inventors: Jerry Chance Carter, Michael P. Chrisp, Anastacia M. Manuel, Boris Mizaikoff, Andreas Wilk, Seong-Soo Kim
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Patent number: 8339600Abstract: A catadioptric dual waveband imaging spectrometer that covers the visible through short-wave infrared, and the midwave infrared spectral regions, dispersing the visible through shortwave infrared with a zinc selenide grating and midwave infrared with a sapphire prism. The grating and prism are at the cold stop position, enabling the pupil to be split between them. The spectra for both wavebands are focused onto the relevant sections of a single dual waveband detector. Spatial keystone distortion is controlled to less than one tenth of a pixel over the full wavelength range, facilitating the matching of the spectra in the midwave infrared with the shorter wavelength region.Type: GrantFiled: July 2, 2010Date of Patent: December 25, 2012Assignee: Lawrence Livermore National Security, LLCInventor: Michael P. Chrisp
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Publication number: 20120234522Abstract: A focal plane assembly facilitates a molybdenum base plate being mounted to another plate made from aluminum. The molybdenum pin is an interference fit (press fit) in the aluminum base plate. An annular cut out area in the base plate forms two annular flexures.Type: ApplicationFiled: March 14, 2011Publication date: September 20, 2012Inventors: William E. Hunt, JR., Michael P. Chrisp
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Publication number: 20120062889Abstract: A cryogenically cooled imaging spectrometer that includes a spectrometer housing having a first side and a second side opposite the first side. An entrance slit is on the first side of the spectrometer housing and directs light to a cross-disperser grating. An echelle immersions grating and a catadioptric lens are positioned in the housing to receive the light. A cryogenically cooled detector is located in the housing on the second side of the spectrometer housing. Light from the entrance slit is directed to the cross-disperser grating. The light is directed from the cross-disperser grating to the echelle immersions grating. The light is directed from the echelle immersions grating to the cryogenically cooled detector on the second side of the spectrometer housing.Type: ApplicationFiled: April 13, 2011Publication date: March 15, 2012Applicant: Lawrence Livermore National Security, LLCInventors: Michael P. Chrisp, Joel M. Bowers
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Publication number: 20120002202Abstract: A catadioptric dual waveband imaging spectrometer that covers the visible through short-wave infrared, and the midwave infrared spectral regions, dispersing the visible through shortwave infrared with a zinc selenide grating and midwave infrared with a sapphire prism. The grating and prism are at the cold stop position, enabling the pupil to be split between them. The spectra for both wavebands are focused onto the relevant sections of a single dual waveband detector. Spatial keystone distortion is controlled to less than one tenth of a pixel over the full wavelength range, facilitating the matching of the spectra in the midwave infrared with the shorter wavelength region.Type: ApplicationFiled: July 2, 2010Publication date: January 5, 2012Inventor: Michael P. Chrisp
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Patent number: 7808635Abstract: A wide swath imaging spectrometer utilizing an array of individual spectrometer modules in the telescope focal plane to provide an extended field of view. The spectrometer modules with their individual detectors are arranged so that their slits overlap with motion on the scene providing contiguous spatial coverage. The number of modules can be varied to take full advantage of the field of view available from the telescope.Type: GrantFiled: August 27, 2008Date of Patent: October 5, 2010Assignee: Lawrence Livermore National Security, LLCInventor: Michael P. Chrisp
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Publication number: 20100053609Abstract: A wide swath imaging spectrometer utilizing an array of individual spectrometer modules in the telescope focal plane to provide an extended field of view. The spectrometer modules with their individual detectors are arranged so that their slits overlap with motion on the scene providing contiguous spatial coverage. The number of modules can be varied to take full advantage of the field of view available from the telescope.Type: ApplicationFiled: August 27, 2008Publication date: March 4, 2010Inventor: Michael P. Chrisp
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Patent number: 7414719Abstract: A wide field catadioptric imaging spectrometer with an immersive diffraction grating that compensates optical distortions. The catadioptric design has zero Petzval field curvature. The imaging spectrometer comprises an entrance slit for transmitting light, a system with a catadioptric lens and a dioptric lens for receiving the light and directing the light, an immersion grating, and a detector array. The entrance slit, the system for receiving the light, the immersion grating, and the detector array are positioned wherein the entrance slit transmits light to the system for receiving the light and the system for receiving the light directs the light to the immersion grating and the immersion grating receives the light and directs the light through the system for receiving the light to the detector array.Type: GrantFiled: January 26, 2006Date of Patent: August 19, 2008Assignee: Lawrence Livermore National Security, LLCInventor: Michael P. Chrisp
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Patent number: 7239386Abstract: A compact imaging spectrometer with an immersive diffraction grating that compensates optical distortions. The imaging spectrometer comprises an entrance slit for transmitting light, means for receiving the light and directing the light, an immersion grating, and a detector array. The entrance slit, the means for receiving the light, the immersion grating, and the detector array are positioned wherein the entrance slit transmits light to the means for receiving the light and the means for receiving the light directs the light to the immersion grating and the immersion grating receives the light and directs the light to the means for receiving the light, and the means for receiving the light directs the light to the detector array.Type: GrantFiled: August 17, 2004Date of Patent: July 3, 2007Assignee: The Regents of the University of CaliforniaInventors: Michael P. Chrisp, Scott A. Lerner, Paul J. Kuzmenko, Charles L. Bennett
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Patent number: 7041979Abstract: A compact imaging spectrometer comprising an entrance slit for directing light, a first mirror that receives said light and reflects said light, an immersive diffraction grating that diffracts said light, a second mirror that focuses said light, and a detector array that receives said focused light. The compact imaging spectrometer can be utilized for remote sensing imaging spectrometers where size and weight are of primary importance.Type: GrantFiled: September 9, 2003Date of Patent: May 9, 2006Assignee: The Regents of the University of CaliforniaInventor: Michael P. Chrisp
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Patent number: 7016038Abstract: A compact imaging spectrometer with an immersive diffraction grating that compensates optical distortions. The imaging spectrometer comprises an entrance slit for transmitting light, a system for receiving the light and directing the light, an immersion grating, and a detector array. The entrance slit, the system for receiving the light, the immersion grating, and the detector array are positioned wherein the entrance slit transmits light to the system for receiving the light and the system for receiving the light directs the light to the immersion grating and the immersion grating receives the light and directs the light through an optical element to the detector array.Type: GrantFiled: February 25, 2005Date of Patent: March 21, 2006Assignee: The Regents of the University of CaliforniaInventors: Michael P. Chrisp, Scott A. Lerner, Paul J. Kuzmenko, Charles L. Bennett
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Patent number: 7016037Abstract: A compact imaging spectrometer comprises an entrance slit, a catadioptric lens with a mirrored surface, a grating, and a detector array. The entrance slit directs light to the mirrored surface of the catadioptric lens; the mirrored surface reflects the light back through the lens to the grating. The grating receives the light from the catadioptric lens and diffracts the light to the lens away from the mirrored surface. The lens transmits the light and focuses it onto the detector array.Type: GrantFiled: June 24, 2004Date of Patent: March 21, 2006Assignee: The Regents of the University of CaliforniaInventors: Michael P. Chrisp, Scott A. Lerner
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Patent number: 5880834Abstract: A 1:1 Offner mirror system for imaging off-axis objects is modified by replacing a concave spherical primary mirror that is concentric with a convex secondary mirror with two concave spherical mirrors M1 and M2 of the same or different radii positioned with their respective distances d1 and d2 from a concentric convex spherical diffraction grating having its grooves parallel to the entrance slit of the spectrometer which replaces the convex secondary mirror. By adjusting their distances d1 and d2 and their respective angles of reflection .alpha. and .beta., defined as the respective angles between their incident and reflected rays, all aberrations are corrected without the need to increase the spectrometer size for a given entrance slit size to reduce astigmatism, thus allowing the imaging spectrometer volume to be less for a given application than would be possible with conventional imaging spectrometers and still give excellent spatial and spectral imaging of the slit image spectra over the focal plane.Type: GrantFiled: March 24, 1998Date of Patent: March 9, 1999Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventor: Michael P. Chrisp