Patents by Inventor John Michael Miller

John Michael Miller 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: 11016227
    Abstract: A diffractive optical element may include sub-wavelength period stack-and-gap structured layers providing transmissive phase delay at a wavelength. The sub-wavelength period stack-and-gap structured layers may include a set of thin anti-reflection layers that are index matched to an environment or a substrate over a range of fill factors of the sub-wavelength period.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: May 25, 2021
    Assignee: Lumentum Operations LLC
    Inventors: John Michael Miller, Stephen Bagnald
  • Patent number: 10994224
    Abstract: A tank system may be conventional and fixed, or mobile, such as a fracking fluid or other tank trailer. A drain port thereof is fitted with an adapter connecting a snorkel system to drain liquids from near the top of the liquid level in the tank. A snorkel head at the extreme distal end of a tube near the longitudinal center of the tank is suspended by a system of buoys. A flow field controller plate resists formation of vortices near the snorkel head, so it can operate as near the surface as possible, withdrawing the highest grade oil efficiently. At its exit, the proximal end of the tube drains oil through an inner conduit of an adapter at a penetration in the wall of the tank. The adapter forms an annulus around the inner conduit draining tank bottoms directly from the tank.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: May 4, 2021
    Assignee: THOUGHT PRESERVE, LLC
    Inventors: David A. Bell, C. Michael Miller, Kristen Tucker, John Michael Higley
  • Publication number: 20210026051
    Abstract: A transmissive optical element may include a substrate. The transmissive optical element may include a first anti-reflectance structure for a particular wavelength range formed on the substrate. The transmissive optical element may include a second anti-reflectance structure for the particular wavelength range formed on the first anti-reflectance structure. The transmissive optical element may include a third anti-reflectance structure for the particular wavelength range formed on the second anti-reflectance structure. The transmissive optical element may include at least one layer disposed between the first anti-reflectance structure and the second anti-reflectance structure or between the second anti-reflectance structure and the third anti-reflectance structure.
    Type: Application
    Filed: September 30, 2020
    Publication date: January 28, 2021
    Inventors: John Michael MILLER, Gonzalo Wills
  • Publication number: 20200400861
    Abstract: An optical element may include a substrate. The optical element may include a first anti-reflectance structure for a particular wavelength range formed on the substrate. The optical element may include at least one layer disposed on a portion of the first anti-reflectance structure. The optical element may include a second anti-reflectance structure for the particular wavelength range formed on the at least one layer. A depth between a first surface of the first anti-reflectance structure and a second surface of the second anti-reflectance structure, a first index of refraction of the first anti-reflectance structure, a second index of refraction of the second anti-reflectance structure, and a third index of refraction of the at least one layer may be selected to form a diffractive optical element associated with a particular phase delay for the particular wavelength.
    Type: Application
    Filed: June 30, 2020
    Publication date: December 24, 2020
    Inventors: John Michael MILLER, Stephen BAGNALD
  • Patent number: 10802183
    Abstract: A diffraction grating may include a substrate. The diffraction grating may include an etch stop layer to prevent etching of the substrate. The etch stop layer may be deposited on the substrate. The diffraction grating may include a marker layer to indicate an etch end-point associated with etching of a dielectric layer. The marker layer may be deposited on a portion of the etch stop layer. The diffraction grating may include the dielectric layer to form a grating layer after being etched. The dielectric layer may be deposited on at least the marker layer.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: October 13, 2020
    Assignee: Lumentum Operations LLC
    Inventors: John Michael Miller, Gonzalo Wills, Lu Tian, Michael O'Leary
  • Patent number: 10802185
    Abstract: A transmissive optical element may include a substrate. The transmissive optical element may include a first anti-reflectance structure for a particular wavelength range formed on the substrate. The transmissive optical element may include a second anti-reflectance structure for the particular wavelength range formed on the first anti-reflectance structure. The transmissive optical element may include a third anti-reflectance structure for the particular wavelength range formed on the second anti-reflectance structure. The transmissive optical element may include at least one layer disposed between the first anti-reflectance structure and the second anti-reflectance structure or between the second anti-reflectance structure and the third anti-reflectance structure.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: October 13, 2020
    Assignee: Lumentum Operations LLC
    Inventors: John Michael Miller, Gonzalo Wills
  • Patent number: 10768349
    Abstract: A reflective diffraction grating and a fabrication method are provided. The reflective diffraction grating includes a substrate, a UV-absorbing layer, a grating layer having a binary surface-relief pattern formed therein, and a conforming reflective layer. Advantageously, the UV-absorbing layer absorbs light at a UV recording wavelength to minimize reflection thereof by the substrate during holographic patterning at the UV recording wavelength.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: September 8, 2020
    Assignee: Lumentum Operations LLC
    Inventors: John Michael Miller, Hery Djie, Patrick Lu, Xiaowei Guo, Qinghong Du, Eddie Chiu, Chester Murley
  • Patent number: 10747044
    Abstract: A sub-wavelength grating is placed inside a liquid crystal variable optical retarder to reduce polarization dependence of the optical retardation generated by the variable optical retarder. A small thickness of the sub-wavelength grating, as compared to a conventional waveplate, reduces the driving voltage penalty due to the in-cell placement of the sub-wavelength grating.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: August 18, 2020
    Assignee: Lumentum Operations LLC
    Inventors: John Michael Miller, Gonzalo Wills
  • Patent number: 10712475
    Abstract: An optical element may include a substrate. The optical element may include a first anti-reflectance structure for a particular wavelength range formed on the substrate. The optical element may include at least one layer disposed on a portion of the first anti-reflectance structure. The optical element may include a second anti-reflectance structure for the particular wavelength range formed on the at least one layer. A depth between a first surface of the first anti-reflectance structure and a second surface of the second anti-reflectance structure, a first index of refraction of the first anti-reflectance structure, a second index of refraction of the second anti-reflectance structure, and a third index of refraction of the at least one layer may be selected to form a diffractive optical element associated with a particular phase delay for the particular wavelength.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: July 14, 2020
    Assignee: Lumentum Operations LLC
    Inventors: John Michael Miller, Stephen Bagnald
  • Publication number: 20200033509
    Abstract: A zoned waveplate has a series of transversely stacked birefringent zones alternating with non-birefringent zones. The birefringent and non-birefringent zones are integrally formed upon an AR-coated face of a single substrate by patterning the AR coated face of the substrate with zero-order sub-wavelength form-birefringent gratings configured to have a target retardance. The layer structure of the AR coating is designed to provide the target birefringence in the patterned zones and the reflection suppression.
    Type: Application
    Filed: October 7, 2019
    Publication date: January 30, 2020
    Inventors: John Michael Miller, Joel Milgram, Karen Denise Hendrix, Michael O'Leary, Hery Djie, Lu Tian, Paul Colbourne
  • Patent number: 10473839
    Abstract: A sub-wavelength thin-film metal grating is placed inside a liquid crystal variable optical retarder at a selected distance from a reflective electrode to form a reflective half wave plate, thereby reducing polarization dependence of the optical retardation generated by the variable optical retarder. The approach enables to form within the device the reflective half wave plate that is suitably thin without modifying the reflective electrode of the device.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: November 12, 2019
    Assignee: Lumentum Operations LLC
    Inventors: Keith Anderson, John Michael Miller, Hery Djie, Lu Tian
  • Patent number: 10436947
    Abstract: A zoned waveplate has a series of transversely stacked birefringent zones alternating with non-birefringent zones. The birefringent and non-birefringent zones are integrally formed upon an AR-coated face of a single substrate by patterning the AR coated face of the substrate with zero-order sub-wavelength form-birefringent gratings configured to have a target retardance. The layer structure of the AR coating is designed to provide the target birefringence in the patterned zones and the reflection suppression.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: October 8, 2019
    Assignee: Lumentum Operations LLC
    Inventors: John Michael Miller, Joel Milgram, Karen Denise Hendrix, Michael O'Leary, Hery Djie, Lu Tian, Paul Colbourne
  • Patent number: 10394015
    Abstract: A diffractive MEMS device has an in-plane binary reflective diffraction pattern formed in an outer surface of a tillable platform. The binary reflective diffraction pattern includes rectangular or trapezoidal ridges and valleys, or grooves, of a same depth. The binary reflective diffractive pattern has a high diffraction efficiency even though the surfaces of the “grooves” or “ridges” are not perpendicular to the incoming optical beam. The diffractive pattern is supported by a pair of torsional hinges and is tiltable by an electrostatic actuator. The electrostatic actuator can include at least one side electrode for linearization of dependence of tilt angle on the voltage applied to the actuator.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: August 27, 2019
    Assignee: Lumentum Operations LLC
    Inventors: John Michael Miller, Wenlin Jin
  • Publication number: 20190204483
    Abstract: A diffraction grating may include a substrate. The diffraction grating may include an etch stop layer to prevent etching of the substrate. The etch stop layer may be deposited on the substrate. The diffraction grating may include a marker layer to indicate an etch end-point associated with etching of a dielectric layer. The marker layer may be deposited on a portion of the etch stop layer. The diffraction grating may include the dielectric layer to form a grating layer after being etched. The dielectric layer may be deposited on at least the marker layer.
    Type: Application
    Filed: February 28, 2019
    Publication date: July 4, 2019
    Inventors: John Michael MILLER, Gonzalo WILLS, Lu TIAN, Michael O'LEARY
  • Patent number: 10241244
    Abstract: A diffraction grating may include a substrate. The diffraction grating may include an etch stop layer to prevent etching of the substrate. The etch stop layer may be deposited on the substrate. The diffraction grating may include a marker layer to indicate an etch end-point associated with etching of a dielectric layer. The marker layer may be deposited on a portion of the etch stop layer. The diffraction grating may include the dielectric layer to form a grating layer after being etched. The dielectric layer may be deposited on at least the marker layer.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: March 26, 2019
    Assignee: Lumentum Operations LLC
    Inventors: John Michael Miller, Gonzalo Wills, Lu Tian, Michael O'Leary
  • Publication number: 20190086682
    Abstract: A diffractive optical element may include sub-wavelength period stack-and-gap structured layers providing transmissive phase delay at a wavelength. The sub-wavelength period stack-and-gap structured layers may include a set of thin anti-reflection layers that are index matched to an environment or a substrate over a range of fill factors of the sub-wavelength period.
    Type: Application
    Filed: July 19, 2018
    Publication date: March 21, 2019
    Inventors: John Michael MILLER, Stephen BAGNALD
  • Publication number: 20190056531
    Abstract: An optical element may include a substrate. The optical element may include a first anti-reflectance structure for a particular wavelength range formed on the substrate. The optical element may include at least one layer disposed on a portion of the first anti-reflectance structure. The optical element may include a second anti-reflectance structure for the particular wavelength range formed on the at least one layer. A depth between a first surface of the first anti-reflectance structure and a second surface of the second anti-reflectance structure, a first index of refraction of the first anti-reflectance structure, a second index of refraction of the second anti-reflectance structure, and a third index of refraction of the at least one layer may be selected to form a diffractive optical element associated with a particular phase delay for the particular wavelength.
    Type: Application
    Filed: December 11, 2017
    Publication date: February 21, 2019
    Inventors: John Michael Miller, Stephen Bagnald
  • Publication number: 20190056542
    Abstract: A transmissive optical element may include a substrate. The transmissive optical element may include a first anti-reflectance structure for a particular wavelength range formed on the substrate. The transmissive optical element may include a second anti-reflectance structure for the particular wavelength range formed on the first anti-reflectance structure. The transmissive optical element may include a third anti-reflectance structure for the particular wavelength range formed on the second anti-reflectance structure. The transmissive optical element may include at least one layer disposed between the first anti-reflectance structure and the second anti-reflectance structure or between the second anti-reflectance structure and the third anti-reflectance structure.
    Type: Application
    Filed: July 24, 2018
    Publication date: February 21, 2019
    Inventors: John Michael MILLER, Gonzalo WILLS
  • Publication number: 20180252845
    Abstract: A zoned waveplate has a series of transversely stacked birefringent zones alternating with non-birefringent zones. The birefringent and non-birefringent zones are integrally formed upon an AR-coated face of a single substrate by patterning the AR coated face of the substrate with zero-order sub-wavelength form-birefringent gratings configured to have a target retardance. The layer structure of the AR coating is designed to provide the target birefringence in the patterned zones and the reflection suppression.
    Type: Application
    Filed: May 7, 2018
    Publication date: September 6, 2018
    Inventors: John Michael Miller, Joel Milgram, Karen Denise Hendrix, Michael O'Leary, Hery Djie, Lu Tian, Paul Colbourne
  • Publication number: 20180231813
    Abstract: A sub-wavelength grating is placed inside a liquid crystal variable optical retarder to reduce polarization dependence of the optical retardation generated by the variable optical retarder. A small thickness of the sub-wavelength grating, as compared to a conventional waveplate, reduces the driving voltage penalty due to the in-cell placement of the sub-wavelength grating.
    Type: Application
    Filed: April 16, 2018
    Publication date: August 16, 2018
    Inventors: John Michael MILLER, Gonzalo WILLS