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    Optical filter, and imaging device comprising same
    1.
    发明授权
    Optical filter, and imaging device comprising same 审中-公开

    公开(公告)号：US10670785B2

    公开(公告)日：2020-06-02

    申请号：US14917018

    申请日：2014-08-30

    Applicant: LMS Co., Ltd.

    Inventor： Joo Young Kim ,  Seon Ho Yang ,  Hong Seok Chin ,  Min Soo Lee

    IPC: G02B5/28 ,  G02B5/22 ,  G02B5/20

    Abstract: An optical filter comprising a light absorption layer and a near-infrared reflection layer, and an imaging device comprising the optical filter are provided. Wherein the light absorption layer has an absorption maximum in a wavelength range of 670 to 720 nm, a wavelength at which the near-infrared reflection layer has a light transmittance of 50% is in a range of 690 to 720 nm, and the optical filter satisfies the following Mathematical Formula 1: ΔE*≤1.5  [Mathematical Formula 1] wherein the ΔE* value represents a color difference between light that is incident in a vertical direction of the optical filter and passes through the optical filter and light that is incident at an angle of 30° with respect to the vertical direction of the optical filter and passes through the optical filter.

    OPTICAL ARTICLE AND OPTICAL FILTER COMPRISING SAME
    2.
    发明申请
    OPTICAL ARTICLE AND OPTICAL FILTER COMPRISING SAME 审中-公开

    公开(公告)号：US20190055375A1

    公开(公告)日：2019-02-21

    申请号：US16078728

    申请日：2017-02-16

    Applicant: LMS Co.,Ltd.

    Inventor： Jeong Og Choi ,  Joon Ho Jung ,  Jin Ho Jung ,  Joo Young Kim ,  Seon Ho Yang

    IPC: C08K5/01 ,  C08L101/00 ,  G02B5/26 ,  G02B5/20 ,  H01L27/146

    Abstract: The present invention relates to an optical article and an optical filter comprising the same. The optical filter comprises an optical article containing one or more near-infrared absorbing dyes and having two or more absorption peaks comprising a first absorption peak and a second absorption peak in a wavelength range of 380 nm to 1,200 nm whereby the optical filter has advantages in that transmissivity is high with respect to light having the wavelength of a visible light region and transmissivity is suppressed to 0.6% or less with respect to light having a wavelength in the range of 800 nm to 1,000 nm so that ghost image problems can be prevented, and a yield and productivity can be improved through the reduction of poor assembly caused by the bending of the optical filter in an image device assembling process.

    Optical article and optical filter including same
    3.
    发明授权
    Optical article and optical filter including same 有权

    公开(公告)号：US10908081B2

    公开(公告)日：2021-02-02

    申请号：US16495861

    申请日：2018-04-04

    Applicant: LMS CO., LTD

    Inventor： Jeong Og Choi ,  Joon Ho Jung ,  Seon Ho Yang ,  Jin Ho Jung ,  Joo Young Kim

    IPC: G02B5/20 ,  G02B5/22 ,  G01N21/359

    Abstract: The present invention relates to an optical article and an optical filter including the same. The optical filter: includes an optical article which has at least two absorption peaks, including a first and a second absorption peak, in the wavelength range of 380 nm to 1,200 nm by containing two or more kinds of near-infrared absorbing pigments, and thus shows a high average transmittance of 86% or greater for light having a wavelength in the visible wavelength range; can limit the maximum transmittance of light having a wavelength in the range of 800 nm to 1,100 nm below 0.5%, so as to prevent lens flare; and can reduce assembly defects due to flexure of an optical filter in the process of assembling the optical filter to an image capturing apparatus, thereby improving yield and productivity.

    Optical product and optical filter including same
    6.
    发明授权
    Optical product and optical filter including same 有权

    公开(公告)号：US11698480B2

    公开(公告)日：2023-07-11

    申请号：US16651789

    申请日：2018-09-21

    Applicant: LMS Co., Ltd.

    Inventor： Jeong Og Choi ,  Joo Young Kim ,  Seon Ho Yang ,  Min Soo Lee ,  Yong Won Choi

    IPC: G02B5/22 ,  G02B5/20 ,  C08K5/3417 ,  C09B57/00 ,  G03B11/00

    CPC classification number: G02B5/226 ,  C08K5/3417 ,  C09B57/00 ,  G02B5/208 ,  G03B11/00

    Abstract: The present invention relates to an optical article, and an optical filter and an imaging device including the same. The optical article comprises: a near-infrared absorption glass substrate including a divalent copper ion as a chromatic ingredient; and a pigment dispersion layer formed on one surface or both surfaces of the near-infrared absorption glass substrate and having a near-infrared absorption pigment and an ultraviolet absorption pigment dispersed across the resin matrix thereof. Provided with a first and a second transmission cut-off region, the optical article has the advantage of allowing the fabrication of an excellent near-infrared cut-off filter that can effectively block light in near-infrared and ultraviolet bands and does not permit a difference in color sense with the change of incident angles.

    Optical article and optical filter comprising same
    8.
    发明授权
    Optical article and optical filter comprising same 有权

    公开(公告)号：US10767030B2

    公开(公告)日：2020-09-08

    申请号：US16078728

    申请日：2017-02-16

    Applicant: LMS Co., Ltd.

    Inventor： Jeong Og Choi ,  Joon Ho Jung ,  Jin Ho Jung ,  Joo Young Kim ,  Seon Ho Yang

    IPC: C08K5/01 ,  C08L101/00 ,  G02B5/20 ,  G02B5/26 ,  H01L27/146 ,  G02B5/22 ,  C08K5/00

    Abstract: The present invention relates to an optical article and an optical filter comprising the same. The optical filter comprises an optical article containing one or more near-infrared absorbing dyes and having two or more absorption peaks comprising a first absorption peak and a second absorption peak in a wavelength range of 380 nm to 1,200 nm whereby the optical filter has advantages in that transmissivity is high with respect to light having the wavelength of a visible light region and transmissivity is suppressed to 0.6% or less with respect to light having a wavelength in the range of 800 nm to 1,000 nm so that ghost image problems can be prevented, and a yield and productivity can be improved through the reduction of poor assembly caused by the bending of the optical filter in an image device assembling process.

    Optical filter, and imaging device comprising same
    9.
    发明授权
    Optical filter, and imaging device comprising same 有权

    公开(公告)号：US10386555B2

    公开(公告)日：2019-08-20

    申请号：US14917016

    申请日：2014-08-30

    Applicant: LMS Co., Ltd.

    Inventor： Joo Young Kim ,  Sung Min Cho

    IPC: G02B5/28 ,  G02B5/20 ,  G02B5/22

    Abstract: An optical filter satisfying Mathematical Formula 1 and an imaging device comprising the filter are provided. ΔE*≤1.5.  [Mathematical Formula 1] In Mathematical Formula 1, ΔE* represents a color difference between light that has entered in the vertical direction of the optical filter and passed through the optical filter, and light that has entered in the direction at an angle of 30° to the vertical direction of the optical filter and passed through the optical filter.

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