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    TOTAL INTERNAL REFLECTION (TIR) PRISM BEAMSPLITTER
    11.
    发明申请
    TOTAL INTERNAL REFLECTION (TIR) PRISM BEAMSPLITTER 审中-公开

    公开(公告)号：US20190011714A1

    公开(公告)日：2019-01-10

    申请号：US16027011

    申请日：2018-07-03

    Applicant: VIAVI Solutions Inc.

    Inventor： Karen Denise HENDRIX ,  Warren HENDRICKS

    IPC: G02B27/12

    Abstract: A dichroic prism beamsplitter may include a medium with a refractive index greater than approximately 1.0. The dichroic prism beamsplitter may include a plurality of layers sandwiched by the medium. The plurality of layers may include an equivalent structure including at least one layer with a refractive index that is less than a threshold refractive index for total internal reflection. The at least one layer may be associated with a thickness less than or equal to a threshold thickness associated with total internal reflection for a threshold wavelength. The at least one layer may cause total internal reflection for a first wavelength range that is less than or equal to the threshold wavelength and causes evanescent wave coupling for a second wavelength range that is greater than the threshold wavelength.

    OPTICAL INTERFERENCE FILTER
    13.
    发明申请
    OPTICAL INTERFERENCE FILTER 有权

    公开(公告)号：US20240411072A1

    公开(公告)日：2024-12-12

    申请号：US18808234

    申请日：2024-08-19

    Applicant: VIAVI Solutions Inc.

    Inventor： Georg J. OCKENFUSS ,  Jinhui YANG ,  Marius GRIGONIS ,  Karen Denise HENDRIX ,  Andy SHKABKO

    IPC: G02B5/28 ,  G02B1/10

    Abstract: In some implementations, an optical interference filter includes a substrate; and a set of layers that are disposed on the substrate, wherein the set of layers includes: a first subset of layers; and a second subset of layers; wherein: each of the first subset of layers includes an aluminum nitride (AlN) material, a stress of each of the first subset of layers is between −1000 and 800 megapascals, the first subset of layers has a first refractive index with a first value, each of the second subset of layers includes at least one other material, the second subset of layers has a second refractive index with a second value that is different than the first value, and the optical interference filter has an effective refractive index greater than or equal to 95% of a highest value of the first value and the second value.

    USE OF DARK MIRROR COATING TO SUPPRESS STRAY LIGHT IN AN OPTICAL SENSOR ASSEMBLY
    15.
    发明申请
    USE OF DARK MIRROR COATING TO SUPPRESS STRAY LIGHT IN AN OPTICAL SENSOR ASSEMBLY 审中-公开

    公开(公告)号：US20190165024A1

    公开(公告)日：2019-05-30

    申请号：US16240560

    申请日：2019-01-04

    Applicant: VIAVI SOLUTIONS INC.

    Inventor： Richard Alan BRADLEY, JR. ,  Karen Denise HENDRIX ,  Jeffrey James KUNA ,  Georg J. OCKENFUSS

    IPC: H01L27/146

    Abstract: An optical sensor assembly is provided in which a dark mirror coating is used to suppress stray light in the form of both unwanted reflections from non-optically active regions of the sensor assembly surface and unwanted transmission of light into the surface region of the sensor assembly. The sensor assembly includes an image sensor positioned in a substrate adjacent to substrate surface areas that are not optically active. A dark mirror coating covering those surface areas significantly reduces reflections from non-optically active surface regions and improves image sensor performance in terms of signal-to-noise ratio and reduction in the appearance of “ghost” images, in turn enhancing the accuracy and precision of the sensor. The dark mirror coating may in the alternative, or in addition, be positioned underneath an optical filter, depending on the structure, material, and requirements of a particular sensor assembly.

    VARIABLE OPTICAL FILTER AND A WAVELENGTH-SELECTIVE SENSOR BASED THEREON
    17.
    发明申请
    VARIABLE OPTICAL FILTER AND A WAVELENGTH-SELECTIVE SENSOR BASED THEREON 审中-公开
    可变光学滤波器和基于波长选择的传感器

    公开(公告)号：US20170047366A1

    公开(公告)日：2017-02-16

    申请号：US15337489

    申请日：2016-10-28

    Applicant: Viavi Solutions Inc.

    Inventor： Karen Denise HENDRIX ,  Charles A. HULSE ,  Richard A. BRADLEY ,  Jeffrey James KUNA

    IPC: H01L27/146 ,  G02B5/28

    CPC classification number: H01L27/14621 ,  G01J3/0259 ,  G01J3/26 ,  G01J2003/1226 ,  G01J2003/1234 ,  G01J2003/1239 ,  G02B5/281 ,  G02B5/288 ,  H01L27/14623 ,  H01L27/1463 ,  H01L27/14634 ,  H01L27/14643 ,  H01L27/14685

    Abstract: A variable optical filter is disclosed including a bandpass filter and a blocking filter. The bandpass filter includes a stack of alternating first and second layers, and the blocking filter includes a stack of alternating third and fourth layers. The first, second and fourth materials each comprise different materials, so that a refractive index of the first material is smaller than a refractive index of the second material, which is smaller than a refractive index of the fourth material; while an absorption coefficient of the second material is smaller than an absorption coefficient of the fourth material. The materials can be selected to ensure high index contrast in the blocking filter and low optical losses in the bandpass filter. The first to fourth layers can be deposited directly on a photodetector array.

    Abstract translation: 公开了一种可变滤波器，其包括带通滤波器和阻塞滤波器。 带通滤波器包括交替的第一和第二层的堆叠，并且阻挡滤波器包括交替的第三和第四层的堆叠。 第一，第二和第四材料各自包括不同的材料，使得第一材料的折射率小于第二材料的折射率，其小于第四材料的折射率; 而第二材料的吸收系数小于第四材料的吸收系数。 可以选择材料以确保阻挡滤波器中的高折射率对比度和带通滤波器中的低光损耗。 第一至第四层可以直接沉积在光电检测器阵列上。

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