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    DIFFRACTIVE OPTICAL ELEMENTS
    1.
    发明公开
    DIFFRACTIVE OPTICAL ELEMENTS 审中-公开

    公开(公告)号：US20230213779A1

    公开(公告)日：2023-07-06

    申请号：US17908840

    申请日：2021-03-03

    申请人： NIL Technology ApS

    发明人： Villads Egede Johansen

    IPC分类号： G02B27/42 ,  G02B5/02

    CPC分类号： G02B27/425 ,  G02B5/0252

    摘要： Techniques for designing diffractive optical elements (DOEs) such as diffusers and other optical beam shaping elements can include designing a DOE unit cell on a smaller area than the overall area of the DOE, and then distributing the unit cell across the entire surface for the DOE. Height translations are introduced for at least some of the unit cells distributed across the surface, where the height translations correspond to respective phase translations for the intended operational wavelength of the DOE. In some instances, phase wrapping is introduced to translate the height variations among the unit cells into unit cells having sub-unit structures whose heights fall within a range that corresponds to a specified phase range at the operational wavelength.

    MULTI-CHANNEL HIGH-RESOLUTION IMAGING DEVICES INCORPORATING METALENSES FOR COLOR IMAGES
    3.
    发明公开
    MULTI-CHANNEL HIGH-RESOLUTION IMAGING DEVICES INCORPORATING METALENSES FOR COLOR IMAGES 审中-公开

    公开(公告)号：US20240337774A1

    公开(公告)日：2024-10-10

    申请号：US18294308

    申请日：2022-07-29

    申请人： NIL Technology ApS

    发明人： James Eilertsen ,  Villads Egede Johansen ,  Fredrik Mattinson ,  Olivier Francois ,  Ulrich Quaade

    IPC分类号： G02B1/00 ,  H04N23/55 ,  H04N23/951 ,  H04N25/13

    CPC分类号： G02B1/002 ,  H04N23/55 ,  H04N23/951 ,  H04N25/134

    摘要： An apparatus includes, in some implementations, at least one image sensor, a plurality of metalenses, and readout and processing circuitry. The at least one image sensor includes pixel arrays, each of which is associated, respectively, with a different one of multiple optical channels configured for detection of incoming light rays of a respective color. The color for each optical channel differs from that of at least one of the other optical channels. Each of the metalenses is disposed, respectively, in a different one of the optical channels and is configured, respectively, to focus incoming light rays onto a different one of the pixel arrays. The readout and processing circuitry is operable to read out signals from the pixel arrays and to generate a respective lower-resolution image for each of the optical channels, and to process the lower-resolution images to obtain a higher-resolution multi-color image. Methods of operation are described as well.

    COLLIMATOR ARRAY AND FANOUT ARRAY
    4.
    发明公开
    COLLIMATOR ARRAY AND FANOUT ARRAY 审中-公开

    公开(公告)号：US20240219741A1

    公开(公告)日：2024-07-04

    申请号：US18289167

    申请日：2022-04-08

    申请人： NIL Technology ApS

    发明人： Ulrich Quaade ,  Olivier Francois ,  Yuriy Elesin ,  Villads Egede Johansen

    IPC分类号： G02B27/30 ,  G02B27/42

    CPC分类号： G02B27/30 ,  G02B27/42

    摘要： Structured light generating modules and systems are described. An example structured light generating module includes an array of discrete light sources, an array of discrete fanout elements, and an array of discrete collimator elements interposed between the array of discrete light sources and the array of discrete fanout elements. Each of the discrete collimator elements within the array of discrete collimator elements is aligned to a respective discrete light source within the array of discrete light sources. Each of the fanout elements within the array of discrete fanout elements is aligned to a respective discrete collimator element within the array of discrete collimator elements. Each of the respectively aligned discrete light sources, collimator elements, and fanout elements is configured to generate a unit-cell structured light illumination comprising one or more individual illumination features over at least a portion of a field of illumination of the structured light generating module, wherein one or more of the unit-cell structured light illuminations collectively are a structured light illumination.

    METASURFACE COATINGS
    8.
    发明申请
    METASURFACE COATINGS 有权

    公开(公告)号：US20230118541A1

    公开(公告)日：2023-04-20

    申请号：US17913953

    申请日：2021-01-19

    申请人： NIL Technology ApS

    发明人： Ulrich Quaade ,  Villads Egede Johansen

    IPC分类号： G03F7/00 ,  H01L27/146 ,  H01L33/58

    摘要： A method includes providing a coating (208) over a first surface (202) of a substrate (204) and over a metasurface (200) on the first surface of the substrate; and imprinting the coating to cause a surface of the coating to have a predetermined characteristic. A device includes a substrate; a metasurface on a first surface of the substrate; and a coating on the metasurface and on the first surface of the substrate, a surface of the coating defining a functional structure.

    DEVICES INCLUDING AN OPTICAL METASTRUCTURE, AND METHODS FOR DESIGNING METASTRUCTURES
    9.
    发明公开
    DEVICES INCLUDING AN OPTICAL METASTRUCTURE, AND METHODS FOR DESIGNING METASTRUCTURES 审中-公开

    公开(公告)号：US20240230951A1

    公开(公告)日：2024-07-11

    申请号：US18286006

    申请日：2022-04-06

    申请人： NIL Technology ApS

    发明人： Yuriy Elesin ,  Joachim Secher ,  Villads Egede Johansen

    IPC分类号： G02B1/00 ,  B82Y20/00 ,  G02B3/00 ,  H01L31/0232

    CPC分类号： G02B1/002 ,  B82Y20/00 ,  G02B3/0056 ,  H01L31/02325 ,  G02B2207/101

    摘要： An optical metastructure like a metalens is composed of unit cells, each of which has a respective unit cell design defined by a shape and area of meta-atoms for that unit cell, and by an arrangement of the meta-atoms within that unit cell. A first region of the metastructure comprises a plurality of adjacent unit cells that includes a subset of unit cells. The respective unit cell design for each of one or more of the plurality of unit cells that is in the first region, but that is not in the subset, is a respective interpolated unit cell design that is based on the respective unit cell designs of the unit cells in the subset. In case of a metalens, the lens is divided in annular regions for particular incident angles, an initial unit cell structure for an inner and an outer unit cell within the annular region is determined and optimised; the design of the unit cells located between the inner and outer unit cells is interpolated from the initial design.