Patents by Inventor Karen Hendrix

Karen Hendrix 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).

  • Publication number: 20170357033
    Abstract: There is disclosed a protected item including an item that needs protection and a protective coating having a hardness of at least about 8 on the Mohs scale. The protected item includes a light transmission in part or all of the visible wavelength of at least about 60% and a light reflection in the visible wavelength of about 4% or less.
    Type: Application
    Filed: June 12, 2017
    Publication date: December 14, 2017
    Inventors: Georg OCKENFUSS, Markus BILGER, Karen HENDRIX, James SWITZER
  • Publication number: 20070195272
    Abstract: An oblique angle deposition is used to provide an A-plate optical retarder having at least one dense, form-birefringent layer. According to one embodiment, the dense, form-birefringent layer(s) are deposited as part of an FBAR stack to provide an all-dielectric full-function A/?C-plate trim retarder for LCD birefringence compensation. Advantageously, the dense structure of the full-function A/?C-plate trim retarder offers high durability and/or stability, thus making it well suited for providing polarization compensation in high light flux polarization-based projection systems.
    Type: Application
    Filed: November 29, 2006
    Publication date: August 23, 2007
    Inventors: Karen Hendrix, Kim Tan, Charles Hulse, Robert Sargent, Robert Klinger
  • Publication number: 20070121074
    Abstract: A fold mirror for a projection display system is designed to lessen a perceived variation in white color balance of light reflected across the mirror wherein the white light is comprised of sub-beams of orthogonal polarization states. The mirror comprises a metal reflective layer and a plurality of optically transparent layers, wherein thicknesses and materials of the optically transparent layers are such that wavelength-averaged reflectance for p-polarized incident green light varies by less than 1%, wavelength-averaged reflectance for s-polarized blue light varies by less than 1.5%, and wavelength-averaged reflectance for s-polarized red light varies by about 4% over a range of angles of incidence between 0 and 65 degrees.
    Type: Application
    Filed: May 10, 2006
    Publication date: May 31, 2007
    Inventors: Karen Hendrix, Andrew Taylor, Apurba Pradhan
  • Publication number: 20070070276
    Abstract: A grating trim retarder fabricated from a form-birefringent multi-layer dielectric stack including at least one anti-reflection coating and supported on a transparent substrate is provided. The form-birefringent dielectric stack includes an axially-inhomogeneous element in the form of a ?C-plate grating and a transversely-inhomogeneous element in the form of an A-plate grating. Each of the ?C-plate and the A-plate gratings are fabricated with dimensions to form a zeroth order sub-wavelength grating structure. Fabricating the grating trim retarder with anti-reflection coatings and/or a segment where the ?C-plate and A-plate grating overlap enables the in-plane and out-of-plane retardances to be tailored independently according to the desired application.
    Type: Application
    Filed: November 1, 2006
    Publication date: March 29, 2007
    Applicant: JDS Uniphase Corporation
    Inventors: Kim Tan, Karen Hendrix, Charles Hulse, Curtis Hruska
  • Publication number: 20060268207
    Abstract: A C-plate compensator is disclosed for compensating the residual A-plate and C-plate retardance of a reflective liquid crystal on silicon (LCoS) display or a transmissive liquid crystal (LC) display in a projection display system. The C-plate incorporates a form-birefringent coating, whose retardance magnitude can be adjusted by tilting with respect to the display panel (X-Y) plane. The tilted plate is rotated about the Z-axis by a prescribed amount from the slow axis of the display panel. Criteria are described for choosing the tilt and rotation angles such that the contrast of the display system produced by the compensated panel is optimized.
    Type: Application
    Filed: May 23, 2006
    Publication date: November 30, 2006
    Applicant: JDS Uniphase Corporation
    Inventors: Kim Tan, Brett Bryars, Karen Hendrix, David Shemo, Thomas Mayer
  • Publication number: 20050128380
    Abstract: The invention relates to a polarization compensating element (PCE) for a liquid crystal, e.g. liquid crystal on silicon (LCoS), display system manufactured using a linearly photo-polymerizable polymer (LPP) for orienting a photo-polymerizable liquid crystal polymer (LCP) film. To decrease the reflection, polarization conversion, and interference events in an LPP/LCP assembly the ?N birefringence value of the LCP material is minimized. Dielectric coatings are added at various locations throughout the assembly for minimizing the amount of reflection, polarization conversion, and interference effects and for suppressing spatial retardance ripples.
    Type: Application
    Filed: December 7, 2004
    Publication date: June 16, 2005
    Applicant: JDS Uniphase Corporation
    Inventors: Jerry Zieba, Thomas Mayer, David Shemo, Markus Duelli, Kim Tan, Karen Hendrix
  • Publication number: 20050128391
    Abstract: The present invention relates to trim retarders used to compensate for residual birefringence created by liquid crystal display panels. In particular the present invention relates to a trim retarder with negative out-of-plane birefringence provided by a form birefringent multi-layer dielectric stack for compensating for retardances resulting from liquid crystal on silicon display panels.
    Type: Application
    Filed: December 10, 2004
    Publication date: June 16, 2005
    Applicant: JDS Uniphase Corporation
    Inventors: Kim Tan, Karen Hendrix, Markus Duelli, Charles Hulse
  • Publication number: 20050099691
    Abstract: The invention provides a multi-cavity filter, and in particular, a multi-cavity bandpass filter having a predetermined centre wavelength. The filter includes a plurality of cavities, each cavity including two partially reflecting films separated by a layer of dielectric material. The two partially reflecting layers are formed from layers of material having alternating high and low refractive indices. Each layer of dielectric material has a thickness that is an integral number of half-waves of the centre wavelength. The filter has an asymmetric structure that causes the reflected chromatic dispersion from one side of the filter to be reduced relative to the reflected chromatic dispersion from the other side.
    Type: Application
    Filed: December 21, 2004
    Publication date: May 12, 2005
    Inventors: Karen Hendrix, Charles Hulse, Frederik Zernik