Patents by Inventor Joseph Mait

Joseph Mait 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).

  • Independent control of both index and dispersion in gradient index optics
    Patent number: 11789183
    Abstract: Three or more base optical materials are selectively combined into a trans-gradient index (GRIN) optical element (e.g., a lens). A wavelength-dependent index of refraction for light propagating perpendicular to the three or more optical materials equals: a volume fraction of a first optical material multiplied by a refractive index of the first optical material, plus a volume fraction of a second optical material multiplied by a refractive index of the second optical material, plus one minus the volume fraction of the first optical material and the volume of the second optical material all multiplied by the refractive index of a third optical material. The wavelength-dependent index of refraction distribution and a refractive index dispersion through the GRIN optical element may be independently specified from one another. A local refractive index at any point in the optical element is a fixed function of a refractive index of each individual optical material.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: October 17, 2023
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Guy Beadie, Richard Flynn, James S. Shirk, Joseph Mait, Predrag Milojkovic
  • Independent Control of Both Index and Dispersion in Gradient Index Optics
    Publication number: 20210026043
    Abstract: Three or more base optical materials are selectively combined into a trans-gradient index (GRIN) optical element (e.g., a lens). A wavelength-dependent index of refraction for light propagating perpendicular to the three or more optical materials equals: a volume fraction of a first optical material multiplied by a refractive index of the first optical material, plus a volume fraction of a second optical material multiplied by a refractive index of the second optical material, plus one minus the volume fraction of the first optical material and the volume of the second optical material all multiplied by the refractive index of a third optical material. The wavelength-dependent index of refraction distribution and a refractive index dispersion through the GRIN optical element may be independently specified from one another. A local refractive index at any point in the optical element is a fixed function of a refractive index of each individual optical material.
    Type: Application
    Filed: October 13, 2020
    Publication date: January 28, 2021
    Inventors: Guy Beadie, Richard Flynn, James S. Shirk, Joseph Mait, Predrag Milojkovic
  • Independent control of both index and dispersion in gradient index optics
    Patent number: 10802180
    Abstract: Three or more base optical materials are selectively combined into a trans-gradient index (GRIN) optical element (e.g., a lens). A wavelength-dependent index of refraction for light propagating perpendicular to the three or more optical materials equals: a volume fraction of a first optical material multiplied by a refractive index of the first optical material, plus a volume fraction of a second optical material multiplied by a refractive index of the second optical material, plus one minus the volume fraction of the first optical material and the volume of the second optical material all multiplied by the refractive index of a third optical material. The wavelength-dependent index of refraction distribution and a refractive index dispersion through the GRIN optical element may be independently specified from one another. A local refractive index at any point in the optical element is a fixed function of a refractive index of each individual optical material.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: October 13, 2020
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Guy Beadie, Richard Flynn, James S. Shirk, Joseph Mait, Predrag Milojkovic
  • Independent Control of Both Index and Dispersion in Gradient Index Optics
    Publication number: 20180106931
    Abstract: Three or more base optical materials are selectively combined into a trans-gradient index (GRIN) optical element (e.g., a lens). A wavelength-dependent index of refraction for light propagating perpendicular to the three or more optical materials equals: a volume fraction of a first optical material multiplied by a refractive index of the first optical material, plus a volume fraction of a second optical material multiplied by a refractive index of the second optical material, plus one minus the volume fraction of the first optical material and the volume of the second optical material all multiplied by the refractive index of a third optical material. The wavelength-dependent index of refraction distribution and a refractive index dispersion through the GRIN optical element may be independently specified from one another. A local refractive index at any point in the optical element is a fixed function of a refractive index of each individual optical material.
    Type: Application
    Filed: October 3, 2017
    Publication date: April 19, 2018
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Guy Beadie, Richard Flynn, James S. Shirk, Joseph Mait, Predrag Milojkovic