Patents by Inventor Matthieu Saracco
Matthieu Saracco 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: 11747446Abstract: According to various embodiments, a solid-state light detection and ranging (LiDAR) transmitter includes a tunable optical metasurface to selectively steer incident optical radiation long an azimuth axis. In some embodiments, different subsets of lasers in an array of lasers are activated to generate optical radiation for incidence on the metasurface at different angles of incidence on an elevation axis for unsteered deflection by the metasurface at corresponding angles of elevation. In some embodiments, a prism is positioned relative to the tunable optical metasurface to deflect the optical radiation from the optical assembly by the optical radiation source for incidence on the metasurface at an angle of incidence that is between the first steering angle and the second steering angle, such that the optical radiation incident on the metasurface and the steered output optical radiation from the metasurface spatially overlap within the prism.Type: GrantFiled: August 26, 2022Date of Patent: September 5, 2023Inventors: Ross D. Uthoff, Apurva Jain, Gleb M. Akselrod, Matthieu Saracco
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Patent number: 11740534Abstract: According to various embodiments, a solid-state light detection and ranging (LiDAR) transmitter includes a tunable optical metasurface to selectively steer incident optical radiation long an azimuth axis. In some embodiments, different subsets of lasers in an array of lasers are activated to generate optical radiation for incidence on the metasurface at different angles of incidence on an elevation axis for unsteered deflection by the metasurface at corresponding angles of elevation. In some embodiments, a prism is positioned relative to the tunable optical metasurface to deflect the optical radiation from the optical assembly by the optical radiation source for incidence on the metasurface at an angle of incidence that is between the first steering angle and the second steering angle, such that the optical radiation incident on the metasurface and the steered output optical radiation from the metasurface spatially overlap within the prism.Type: GrantFiled: January 18, 2023Date of Patent: August 29, 2023Inventors: Ross D. Uthoff, Apurva Jain, Gleb M. Akselrod, Matthieu Saracco
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Patent number: 11579427Abstract: A non-imaging concentrator is employed in an upside down configuration in which light enters a smaller aperture and exits a larger aperture. The input angle of light rays may be as large as 180 degrees, while the maximum exit angle is limited to the acceptance angle of the non-imaging concentrator. A dichroic filter placed at the larger aperture has a maximum angle of incidence equal to the acceptance angle of the non-imaging concentrator.Type: GrantFiled: October 15, 2018Date of Patent: February 14, 2023Assignee: Microvision, Inc.Inventors: Matthieu Saracco, Alga Lloyd Nothern, III, P. Selvan Viswanathan, James P. McGuire
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Patent number: 11567390Abstract: According to various embodiments, a solid-state light detection and ranging (LiDAR) transmitter includes a tunable optical metasurface to selectively steer incident optical radiation long an azimuth axis. In some embodiments, different subsets of lasers in an array of lasers are activated to generate optical radiation for incidence on the metasurface at different angles of incidence on an elevation axis for unsteered deflection by the metasurface at corresponding angles of elevation. In some embodiments, a prism is positioned relative to the tunable optical metasurface to deflect the optical radiation from the optical assembly by the optical radiation source for incidence on the metasurface at an angle of incidence that is between the first steering angle and the second steering angle, such that the optical radiation incident on the metasurface and the steered output optical radiation from the metasurface spatially overlap within the prism.Type: GrantFiled: August 26, 2022Date of Patent: January 31, 2023Assignee: Lumotive, LLCInventors: Ross D. Uthoff, Apurva Jain, Gleb M. Akselrod, Matthieu Saracco
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Patent number: 10831019Abstract: An angular velocity correcting optical device receives a sinusoidally swept input light beam and outputs a non-sinusoidally swept output beam. The output beam may have a constant angular velocity. The output beam may have a constant pitch on a target surface for a constant periodicity pulsed light beam. Optical surfaces may be freeform surfaces specified by polynomials.Type: GrantFiled: July 23, 2018Date of Patent: November 10, 2020Assignee: Microvision, Inc.Inventors: P. Selvan Viswanathan, Matthieu Saracco, Roger F. Johnson, Ian Blanch
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Patent number: 10742942Abstract: Devices and methods are described herein to measure optical power in scanning laser projectors. In general, the devices and methods utilize a polarizing component and photodiode to measure optical power being generated by at least one laser light source. The polarizing component is configured to polarize at least a portion of the laser beam in a way that improves the accuracy and consistency of this optical power measurement. Specifically, the polarizing component filters at least a portion of the laser beam for one polarization state in a way that facilitates improved reliability in the amount of laser light directed into the photodiode.Type: GrantFiled: February 12, 2018Date of Patent: August 11, 2020Assignee: Microvision, Inc.Inventors: Matthieu Saracco, Alga Lloyd Nothern, III, Thomas Byeman
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Publication number: 20200186765Abstract: Chromatic aberrations are corrected on a first axis of a lens system by the lens system itself. Chromatic aberrations caused by the lens system on a second axis of the lens system are compensated for by varying the timing of laser light pulses of different wavelengths. In visible projection systems, red, green, and blue laser light pulses for a single display pixel are produced at different times as a function of pixel position.Type: ApplicationFiled: December 6, 2018Publication date: June 11, 2020Inventors: Matthieu Saracco, Alga Lloyd Nothern, III, Jonathan A. Morarity
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Publication number: 20200116986Abstract: A non-imaging concentrator is employed in an upside down configuration in which light enters a smaller aperture and exits a larger aperture. The input angle of light rays may be as large as 180 degrees, while the maximum exit angle is limited to the acceptance angle of the non-imaging concentrator. A dichroic filter placed at the larger aperture has a maximum angle of incidence equal to the acceptance angle of the non-imaging concentrator.Type: ApplicationFiled: October 15, 2018Publication date: April 16, 2020Inventors: Matthieu Saracco, Alga Lloyd Nothern, III, P. Selvan Viswanathan, James P. McGuire
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Patent number: 10613341Abstract: A beam combining device combines laser beams and performs speckle reduction of the laser light. Two laser beams are incident on a non-polarizing beam splitter and combined beams are split into two light paths with different optical path lengths. The two light paths may have different geometric path lengths and/or different indices of refraction in the paths to produce the different optical path lengths. One of the light paths is passed through a polarization rotation device and then the two light paths are recombined with a polarizing beam splitter to produce a combined reduced speckle laser beam.Type: GrantFiled: April 9, 2018Date of Patent: April 7, 2020Assignee: Microvision, Inc.Inventors: Alga Lloyd Nothern, III, Matthieu Saracco, Roeland Collet, Thomas Byeman
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Patent number: 10598943Abstract: A bi-acylindrical lens collimates a divergent elliptical laser beam. A first surface of the bi-acylindrical lens is shaped to form a first acylindrical lens, and a second surface of the bi-acylindrical lens is shaped to form a second acylindrical lens. The first acylindrical lens collimates the divergent elliptical laser beam on the fast axis, and the second acylindrical lens collimates the diverging elliptical laser beam on the slow axis.Type: GrantFiled: March 9, 2018Date of Patent: March 24, 2020Assignee: Microvision, Inc.Inventor: Matthieu Saracco
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Publication number: 20200026065Abstract: An angular velocity correcting optical device receives a sinusoidally swept input light beam and outputs a non-sinusoidally swept output beam. The output beam may have a constant angular velocity. The output beam may have a constant pitch on a target surface for a constant periodicity pulsed light beam. Optical surfaces may be freeform surfaces specified by polynomials.Type: ApplicationFiled: July 23, 2018Publication date: January 23, 2020Inventors: P. Selvan Viswanathan, Matthieu Saracco, Roger F. Johnson, Ian Blanch
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Patent number: 10481739Abstract: Briefly, in accordance with one or more embodiments, an information handling system comprises a scanning system to scan one or more component wavelength beams into a combined multi-component beam in a first field of view, and a redirecting system to redirect one or more of the component wavelength beams into a second field of view. A first subset of the one or more component wavelength beams is projected in the first field of view and a second subset of the one or more component wavelength beams is projected in the second field of view. The first subset may project a visible image in the first field of view, and user is capable of providing an input to control the information handling system via interaction with the second subset in the second field of view.Type: GrantFiled: February 16, 2016Date of Patent: November 19, 2019Assignee: Microvision, Inc.Inventors: P. Selvan Viswanathan, Roeland Collet, George Thomas Valliath, Jari Honkanen, Matthieu Saracco
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Publication number: 20190310489Abstract: A beam combining device combines laser beams and performs speckle reduction of the laser light. Two laser beams are incident on a non-polarizing beam splitter and combined beams are split into two light paths with different optical path lengths. The two light paths may have different geometric path lengths and/or different indices of refraction in the paths to produce the different optical path lengths. One of the light paths is passed through a polarization rotation device and then the two light paths are recombined with a polarizing beam splitter to produce a combined reduced speckle laser beam.Type: ApplicationFiled: April 9, 2018Publication date: October 10, 2019Inventors: Alga Lloyd Nothern III, Matthieu Saracco, Roeland Collet, Thomas Byeman
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Publication number: 20190278096Abstract: A bi-acylindrical lens collimates a divergent elliptical laser beam. A first surface of the bi-acylindrical lens is shaped to form a first acylindrical lens, and a second surface of the bi-acylindrical lens is shaped to form a second acylindrical lens. The first acylindrical lens collimates the divergent elliptical laser beam on the fast axis, and the second acylindrical lens collimates the diverging elliptical laser beam on the slow axis.Type: ApplicationFiled: March 9, 2018Publication date: September 12, 2019Inventor: Matthieu Saracco
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Publication number: 20190253678Abstract: Devices and methods are described herein to measure optical power in scanning laser projectors. In general, the devices and methods utilize a polarizing component and photodiode to measure optical power being generated by at least one laser light source. The polarizing component is configured to polarize at least a portion of the laser beam in a way that improves the accuracy and consistency of this optical power measurement.Type: ApplicationFiled: February 12, 2018Publication date: August 15, 2019Inventors: Matthieu Saracco, Alga Lloyd Nothern, III, Thomas Byeman
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Patent number: 10110863Abstract: A scanning projector includes one or more scanning mirrors that reflect a light beam to create an image. The beam is created by multiple laser light sources, at least two of which create light at substantially the same color. The multiple laser light sources are used alternately to illuminate successive pixels, lines, and/or frames. Speckle reduction is achieved because of spatial overlap of the light beams produced by the multiple laser light sources.Type: GrantFiled: November 30, 2016Date of Patent: October 23, 2018Assignee: Microvision, Inc.Inventors: Dale Eugene Zimmerman, Matthieu Saracco, Jonathan A. Morarity
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Patent number: 10108022Abstract: Devices and methods are described herein that use a first solid figure element, a polarizing beam splitter, and a second solid figure element or array of mirrors to reduce speckle in projected images. Specifically, laser light is generated and split into two portions having orthogonal polarizations. The first portion of laser light is reflected in the second solid figure element or the array of mirrors and is then spatially recombined with the second portion of laser light in the first solid figure element. The difference in path length followed by the two portions generates a temporal incoherence in the recombined laser light beam, and that temporal incoherence reduces speckle in the projected image.Type: GrantFiled: May 21, 2018Date of Patent: October 23, 2018Assignee: Microvision, Inc.Inventors: Matthieu Saracco, Roeland Collet, Alga Lloyd Northern, III
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Patent number: 10110866Abstract: The embodiments described herein provide scanning laser devices that include an output optic configured to reduce image distortion. Specifically, the output optic is configured to reduce the distortions that could otherwise occur at relatively short projection distances, while also providing good image quality at relatively long projection distances. In general, the output optic includes a prism having a first surface, a second surface, and a third surface. The prism is configured such that the laser light interacts with each of these three surfaces while being transmitted through the prism and outputted to the display surface. The first, second, and third surfaces are each formed to have a freeform rotationally asymmetric shape, and these freeform rotationally asymmetric shapes are configured to work together to correct distortion in projected images.Type: GrantFiled: June 23, 2017Date of Patent: October 23, 2018Assignee: Microvision, Inc.Inventors: Matthieu Saracco, Roeland Collet, Alga Lloyd Nothern, III, Nenad Nestorovic, Jack H. Schmidt
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Publication number: 20180275419Abstract: Devices and methods are described herein that use a first solid figure element, a polarizing beam splitter, and a second solid figure element or array of mirrors to reduce speckle in projected images. Specifically, laser light is generated and split into two portions having orthogonal polarizations. The first portion of laser light is reflected in the second solid figure element or the array of mirrors and is then spatially recombined with the second portion of laser light in the first solid figure element. The difference in path length followed by the two portions generates a temporal incoherence in the recombined laser light beam, and that temporal incoherence reduces speckle in the projected image.Type: ApplicationFiled: May 21, 2018Publication date: September 27, 2018Inventors: Matthieu Saracco, Roeland Collet, Alga Lloyd Nothern, III
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Patent number: 10070016Abstract: A scanning projector and method is provided that that uses at least one multi-stripe laser to generate the laser light for the scanned image. Specifically, the multi-stripe laser includes at least a first laser element and a second laser element formed together on a semiconductor die. The first laser element is configured to output a first laser light beam, and the second laser element is configured to output a second laser light beam. At least one scanning mirror is configured to reflect the first laser light beam and the second laser light beam, and a drive circuit is configured to provide an excitation signal to excite motion of the at least one scanning mirror. Specifically, the motion is excited such that the at least one scanning mirror reflects the first laser light beam and the second laser light beam in a raster pattern of scan lines.Type: GrantFiled: February 16, 2016Date of Patent: September 4, 2018Assignee: Microvision, Inc.Inventors: Matthieu Saracco, Dale Eugene Zimmerman