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    Engineered surface to reduce visibility of pixel separation in displays
    3.
    发明授权
    Engineered surface to reduce visibility of pixel separation in displays 有权

    公开(公告)号：US10921607B2

    公开(公告)日：2021-02-16

    申请号：US16074977

    申请日：2017-02-07

    申请人： Corning Incorporated

    发明人： Jacques Gollier ,  James Andrew West

    IPC分类号： G02B27/42 ,  G02B27/10 ,  G02B27/01

    摘要： A diffraction element can be employed in a surface display unit to provide diffraction peaks in a manner that reduces or eliminates a screen door effect that is prevalent in pixelated displays that does not have sufficient pixel density. The parameters of the diffraction element can be selected such that the diffraction peaks provide appearance of a larger pixel area than a corresponding physical pixel size. For example, first order diffraction peaks can be placed at a distance of about ⅓ of a nearest subpixel-to-sub-pixel distance. The surface display unit can be employed for any image display application to enhance image quality. For example, a virtual reality headset to remove the screen door effect.

    PRESSURE SENSING TOUCH SYSTEMS AND METHODS
    4.
    发明申请
    PRESSURE SENSING TOUCH SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20190324592A1

    公开(公告)日：2019-10-24

    申请号：US16298538

    申请日：2019-03-11

    申请人： CORNING INCORPORATED

    发明人： Minghan Chen ,  Jacques Gollier ,  Ming-Jun Li ,  Paul Francis Michaloski ,  William James Miller ,  Daniel Aloysius Nolan

    IPC分类号： G06F3/042 ,  G06F3/044 ,  G06F3/045

    摘要： Pressure-sensing touch systems and methods are disclosed for sensing the occurrence of a touch event based on pressure applied at a touch location. The touch system includes a light-source system and a detector system operably adjacent respective input and output edges of a waveguide. Pressure at a touch location on the waveguide gives rise to a touch event causes the waveguide to bend or flex. The waveguide bending causes a change in the optical paths of light traveling by FTIR, causing the light distribution in the output light to change. The changes are detected and are used to determine whether a touch event occurred, as well as the time-evolution of the touch event. The changes in the output light can include polarization changes caused by birefringence induced in the waveguide by the applied pressure applied. Various detector configurations are disclosed for sensing the location and pressure of a touch event.

    High precision measurement of refractive index profile of cylindrical glass bodies
    6.
    发明授权
    High precision measurement of refractive index profile of cylindrical glass bodies 有权

    公开(公告)号：US09989458B2

    公开(公告)日：2018-06-05

    申请号：US14928018

    申请日：2015-10-30

    申请人： Corning Incorporated

    发明人： Ian David Cook ,  Norman Henry Fontaine ,  Qi Wu ,  Jacques Gollier

    IPC分类号： G01N21/41 ,  G01N21/00 ,  G01M11/00

    CPC分类号： G01N21/412 ,  G01M11/37

    摘要： According to some embodiments a method of measuring the refractive index profile of a consolidated glass body having a cylindrical surface comprises the steps of: (a) forming an image of a slit behind the glass body; (b) optionally pre-scanning the cylindrical surface of the test glass body or a reference glass body and analyzing the data within a fixed window to determine the likely location of the zero-order, un-diffracted beam while ignoring other diffracted beams; (c) optionally adjusting the optical power to improve the intensity of the data within the fixed window in order to improve the analysis; (d) predicting the trajectory of the zero-order beam through the preform based on the sampling location xi (incidence position) of the light impinging on the cylindrical surface and the location at which the zero-order beam impinges on the detector; (e) measuring the cylindrical surface of a glass body while using the estimated location of the zero-order beam and adjusted optical power to set the center of a floating window and the beam power at each measurement point; (e) determining deflection angles of the exiting zero-order beam within the floating window at each sampling location; (e) calculating the refractive index profile of glass body by utilizing a transformation function which determines refractive index at each location based upon the measured deflection angle function of the beam.

    HIGH CONTRAST, GLASS-BASED, WRITEABLE/ERASABLE FRONT PROJECTION SCREENS
    10.
    发明申请
    HIGH CONTRAST, GLASS-BASED, WRITEABLE/ERASABLE FRONT PROJECTION SCREENS 审中-公开

    公开(公告)号：US20170269466A1

    公开(公告)日：2017-09-21

    申请号：US15329803

    申请日：2015-07-28

    申请人： CORNING INCORPORATED

    发明人： Gordon Charles Brown ,  Jacques Gollier ,  Joan Deanna Gregorski ,  Vasudha Ravichandran ,  David Lee Weidman

    IPC分类号： G03B21/62 ,  B32B17/06

    摘要： High contrast, glass-based, writeable/erasable front projection screens are provided. The screens include a transparent glass sheet which has a front surface and a back surface separated by a distance d. The back surface is in optical contact with a diffusing element. During use of the projection screen, the glass sheet transmits image light from a projector to the diffusing element and the diffusing element reflects a portion of that light back through the glass sheet to a user. The screens have a user-facing surface that is a writable/erasable surface. In embodiments, the distance d is less than or equal to 0.2 millimeters, the whiteness W of the projection screen is less than or equal to 0.5, and/or the contrast C of the projection screen is at least 75%.