Patents by Inventor Frank Ravizza
Frank Ravizza 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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Publication number: 20240160003Abstract: Disclosed are methods and devices related to a radial mounting interface holding a compact monolithic telescope, or generally an optical component, with robust optical alignment. An example optical mounting apparatus includes a mounting structure including a plurality of segments that are configured to surround a circumferential area of a monolithic optical device and to hold the monolithic optical device in place, wherein each of the plurality of segments includes a ridged or a grooved interface surface to couple the mounting structure to corresponding grooves or ridges in a surface of the monolithic optical device. The apparatus further includes an elastomeric material confined between the ridged or grooved interface surface of the mounting structure and the one or more corresponding grooves or ridges in the surface of the monolithic optical device. Also disclosed are thermal management features that passively enable diffraction-limited performance of large aperture monolithic optics.Type: ApplicationFiled: November 10, 2023Publication date: May 16, 2024Inventors: Frank Ravizza, Brian J. Bauman, Tiffany Yslas, Lisle B. Hagler, Amy Wat, Jonathan Michael Gordon, Michael Yiu-Ming Wong, Alexander J. Pertica, Hilary Johnson, Jordan Smilo
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Patent number: 11789333Abstract: The present disclosure relates to a system for modifying temporal dispersion in an optical signal. The system makes use of a segmented array including a plurality of independently controllable, reflective optical elements. The optical elements are configured to segment a received input optical signal into a plurality of beamlets, and to reflect and steer selected ones of the plurality of beamlets in predetermined angular orientations therefrom. A variable optical dispersion subsystem is used which has a plurality of optical components configured to receive and impart different predetermined time delays to different ones of the received beamlets, and to output the plurality of beamlets therefrom.Type: GrantFiled: March 1, 2021Date of Patent: October 17, 2023Assignees: Lawrence Livermore National Security, LLC, Bright Silicon Technologies, Inc.Inventors: Robert Matthew Panas, Frank Ravizza, Robert McHenry
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Publication number: 20230288692Abstract: In one aspect, an apparatus includes a first aspheric refractive surface defined by a first polynomial and positioned to receive input light, and a first aspheric mirror surface comprising a first reflective coating, the first mirror surface defined by a second polynomial and positioned to receive light from the first aspheric refractive surface. The apparatus includes a second aspheric mirror surface comprising a second reflective coating, the second aspheric mirror surface defined by a third polynomial and positioned to receive light from the first aspheric mirror surface, and a second aspheric refractive surface defined by a fourth polynomial and positioned to receive light from the second aspheric mirror surface, wherein the first aspheric refractive surface, the first aspheric mirror surface, the second aspheric mirror surface, and the second aspheric refractive surface are arranged to have a fixed alignment with respect to each other as part of a monolithic structure.Type: ApplicationFiled: March 14, 2022Publication date: September 14, 2023Inventor: Frank Ravizza
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Publication number: 20230204936Abstract: Disclosed are monolithic optical systems using an aerogel molded around a mandrel. A method of manufacturing an optical system includes applying a reflective coating to at least a portion of a surface of a mandrel, placing the mandrel in a tank and subsequently filling the tank with aerogel to a predetermined depth below a top of the mandrel. The method includes adding a separation layer to the tank on top of the aerogel at the predetermined depth, catalyzing the separation layer into a solid, and adding aerogel on top of the separation layer filling the tank with aerogel above a height of the mandrel, and removing the aerogel and mandrel from the tank, drying the aerogel into a solid aerogel structure, catalyzing the reflective coating to bond the reflective coating with the aerogel, and removing the mandrel from the aerogel structure to produce the aerogel structure having a hollowed-out interior.Type: ApplicationFiled: December 29, 2021Publication date: June 29, 2023Inventor: Frank Ravizza
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Publication number: 20220276544Abstract: The present disclosure relates to a system for modifying temporal dispersion in an optical signal. The system makes use of a segmented array including a plurality of independently controllable, reflective optical elements. The optical elements are configured to segment a received input optical signal into a plurality of beamlets, and to reflect and steer selected ones of the plurality of beamlets in predetermined angular orientations therefrom. A variable optical dispersion subsystem is used which has a plurality of optical components configured to receive and impart different predetermined time delays to different ones of the received beamlets, and to output the plurality of beamlets therefrom.Type: ApplicationFiled: March 1, 2021Publication date: September 1, 2022Inventors: Robert Matthew PANAS, Frank RAVIZZA, Robert MCHENRY
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Publication number: 20220113674Abstract: Differential Holography technology measures the amplitude and/or phase of, e.g., an incident linearly polarized spatially coherent quasi-monochromatic optical field by optically computing the first derivative of the field and linearly mapping it to an irradiance signal detectable by an image sensor. This information recorded on the image sensor is then recovered by a simple algorithm. In some embodiments, an input field is split into two or more beams to independently compute the horizontal and vertical derivatives using amplitude gradient filters in orthogonal orientations) for detection on one image sensor in separate regions of interest (ROIs) or on multiple image sensors. A third unfiltered beam recorded in a third ROI directly measures amplitude variations in the input field to numerically remove its contribution as noise before recovering the original wavefront using a numerical in algorithm.Type: ApplicationFiled: November 24, 2021Publication date: April 14, 2022Applicant: Lawrence Livermore National Security, LLCInventor: Frank RAVIZZA
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Patent number: 11215951Abstract: Differential Holography technology measures the amplitude and/or phase of, e.g., an incident linearly polarized spatially coherent quasi-monochromatic optical field by optically computing the first derivative of the field and linearly mapping it to an irradiance signal detectable by an image sensor. This information recorded on the image sensor is then recovered by a simple algorithm. In some embodiments, an input field is split into two or more beams to independently compute the horizontal and vertical derivatives (using amplitude gradient filters in orthogonal orientations) for detection on one image sensor in separate regions of interest (ROIs) or on multiple image sensors. A third unfiltered beam recorded in a third ROI directly measures amplitude variations in the input field to numerically remove its contribution as noise before recovering the original wavefront using a numerical in algorithm.Type: GrantFiled: April 8, 2019Date of Patent: January 4, 2022Assignee: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventor: Frank Ravizza
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Publication number: 20200319592Abstract: Differential Holography technology measures the amplitude and/or phase of, e.g., an incident linearly polarized spatially coherent quasi-monochromatic optical field by optically computing the first derivative of the field and linearly mapping it to an irradiance signal detectable by an image sensor. This information recorded on the image sensor is then recovered by a simple algorithm. In some embodiments, an input field is split into two or more beams to independently compute the horizontal and vertical derivatives (using amplitude gradient filters in orthogonal orientations) for detection on one image sensor in separate regions of interest (ROIs) or on multiple image sensors. A third unfiltered beam recorded in a third ROI directly measures amplitude variations in the input field to numerically remove its contribution as noise before recovering the original wavefront using a numerical in algorithm.Type: ApplicationFiled: April 8, 2019Publication date: October 8, 2020Applicant: Lawrence Livermore National Security, LLC.Inventor: Frank Ravizza