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    POLARIZATION SPECTRAL FILTER, POLARIZATION SPECTRAL FILTER ARRAY, AND POLARIZATION SPECTRAL SENSOR
    2.
    发明公开
    POLARIZATION SPECTRAL FILTER, POLARIZATION SPECTRAL FILTER ARRAY, AND POLARIZATION SPECTRAL SENSOR 审中-公开

    公开(公告)号：EP4242708A2

    公开(公告)日：2023-09-13

    申请号：EP23188057.6

    申请日：2020-12-02

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： PARK, Yeonsang ,  KIM, Hyochul ,  LEE, Jaesoong ,  ROH, Younggeun

    IPC: G02B5/30

    Abstract: Provided is a polarization spectral filter, including: a first reflector and a second reflector disposed to face each other in a first direction; and a grating layer disposed between the first reflector and the second reflector. The grating layer includes a plurality of first grating elements and a plurality of second grating elements, the plurality of first grating elements and the plurality of second grating elements being alternately arranged in a second direction perpendicular to the first direction. The plurality of first grating elements include a first dielectric material having a first refractive index. The plurality of second grating elements include a second dielectric material having a second refractive index different from the first refractive index.

    OPTICAL FILTER AND SPECTROMETER INCLUDING THE SAME
    3.
    发明公开
    OPTICAL FILTER AND SPECTROMETER INCLUDING THE SAME 审中-公开

    公开(公告)号：EP3893031A1

    公开(公告)日：2021-10-13

    申请号：EP21166500.5

    申请日：2021-04-01

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： KIM, Hyochul ,  ROH, Younggeun ,  PARK, Yeonsang ,  LEE, Jaesoong

    IPC: G02B5/28 ,  G01J3/26 ,  G02B5/20

    Abstract: Provided are an optical filter and a spectrometer including the optical filter. The optical filter includes at least one first filter element having a first center wavelength of a first wavelength band, and at least one second filter element arranged on a same plane as the at least one first filter element, the at least one second filter element having a second center wavelength of a second wavelength band. The at least one first filter element includes a first bandpass filter including a plurality of first Bragg reflective layers and at least one first cavity provided between the plurality of first Bragg reflective layers, and a first multi-layer provided on the first bandpass filter, the first multi-layer having a center wavelength different than the first center wavelength of the first Bragg reflective layers in order to block light of a wavelength band other than the first wavelength band.

    APPARATUS AND METHOD USING OPTICAL SPECKLE
    5.
    发明公开
    APPARATUS AND METHOD USING OPTICAL SPECKLE 审中-公开
    使用光学散斑的装置和方法

    公开(公告)号：EP3287942A1

    公开(公告)日：2018-02-28

    申请号：EP17172385.1

    申请日：2017-05-23

    Applicant: Samsung Electronics Co., Ltd. ,  Seoul National University R&DB Foundation

    Inventor： LEE, Jaesoong ,  LEE, Byoungho ,  JEONG, Youngmo

    IPC: G06K9/00

    CPC classification number: G06K9/0012 ,  G06F21/32 ,  G06K9/00013 ,  G06K9/00087 ,  G06K9/00114 ,  G06K9/6202 ,  G06K2009/0006

    Abstract: Provided are apparatuses and methods using an optical speckle. An apparatus may include a light source configured to emit coherent light to an object and an imaging device configured to photograph a speckle pattern generated on the object by the coherent light. The apparatus may also include a processor having a function of determining whether the object is a living body or a non-living body by measuring a contrast of the speckle pattern. The processor may be configured to determine whether the object is a living body or not by comparing the contrast of the speckle pattern with a threshold contrast or a reference contrast previously registered by a user. The apparatus may be used by being applied to a fingerprint recognition system.

    Abstract translation: 提供了使用光斑的设备和方法。 装置可以包括被配置为向对象发射相干光的光源以及被配置为拍摄由相干光在对象上产生的散斑图案的成像装置。 该装置还可以包括处理器，该处理器具有通过测量散斑图案的对比度来确定对象是活体还是非活体的功能。 处理器可以被配置为通过比较散斑图案的对比度与先前由用户预先记录的阈值对比度或参考对比度来确定对象是否是活体。 该装置可以通过应用于指纹识别系统来使用。

    SPECTRAL FILTER, AND IMAGE SENSOR AND ELECTRONIC DEVICE INCLUDING THE SPECTRAL FILTER
    7.
    发明公开
    SPECTRAL FILTER, AND IMAGE SENSOR AND ELECTRONIC DEVICE INCLUDING THE SPECTRAL FILTER 审中-公开

    公开(公告)号：EP3933461A3

    公开(公告)日：2022-03-16

    申请号：EP21181497.5

    申请日：2021-06-24

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： KIM, Hyochul ,  ROH, Younggeun ,  PARK, Yeonsang ,  LEE, Jaesoong

    IPC: G02B5/20 ,  G02B5/28

    Abstract: Provided is a spectral filter including a first unit filter (110) having a first center wavelength in a first wavelength range, and a second unit filter (120) having a second center wavelength in a second wavelength range, wherein the first unit filter includes two first metal reflective layers (131, 132) provided spaced apart from each other and including a first metal, and a first cavity (141, 142, 143) provided between the two first metal reflective layers, and wherein the second unit filter includes two second metal reflective layers (151, 152) provided spaced apart from each other and including a second metal different from the first metal, and a second cavity (161, 162, 163) provided between the two second metal reflective layers. The first metal material has a plasma frequency in the UV and the second metal material has its plasma frequency in the visible.

    SPECTRAL FILTER, AND IMAGE SENSOR AND ELECTRONIC DEVICE INCLUDING THE SPECTRAL FILTER
    8.
    发明公开
    SPECTRAL FILTER, AND IMAGE SENSOR AND ELECTRONIC DEVICE INCLUDING THE SPECTRAL FILTER 审中-公开

    公开(公告)号：EP3933461A2

    公开(公告)日：2022-01-05

    申请号：EP21181497.5

    申请日：2021-06-24

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： KIM, Hyochul ,  ROH, Younggeun ,  PARK, Yeonsang ,  LEE, Jaesoong

    IPC: G02B5/20 ,  G02B5/28

    Abstract: Provided is a spectral filter including a first unit filter (110) having a first center wavelength in a first wavelength range, and a second unit filter (120) having a second center wavelength in a second wavelength range, wherein the first unit filter includes two first metal reflective layers (131, 132) provided spaced apart from each other and including a first metal, and a first cavity (141, 142, 143) provided between the two first metal reflective layers, and wherein the second unit filter includes two second metal reflective layers (151, 152) provided spaced apart from each other and including a second metal different from the first metal, and a second cavity (161, 162, 163) provided between the two second metal reflective layers. The first metal material has a plasma frequency in the UV and the second metal material has its plasma frequency in the visible.

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