公开(公告)号：EP4123727A1

公开(公告)日：2023-01-25

申请号：EP21771354.4

申请日：2021-03-15

申请人： Nitto Denko Corporation

发明人： MATSUDA, Tomoya ,  NUMATA, Yudai ,  KATSUDA, Masato ,  MATSUDA, Shoichi

IPC分类号： H01L31/0232 ,  G02B5/02 ,  G02B5/22 ,  G02B5/26

摘要： An optical filter ( 10 ) comprises a matrix ( 12 ) and fine particles ( 14 ) dispersed in the matrix ( 12 ), wherein the fine particles ( 14 ) have a parameter Ds of 8.0 to 30 inclusive, Ds being determined by a USAXS pattern and given by Ds = λ/(B·cosθ·Ra), where λ is the X-ray wavelength, θ is one half the scattering angle 20(rad) providing a scattering intensity peak, B is the half width (FWHM, rad) of the peak, and Ra is the average particle size of the fine particles (14).

公开(公告)号：EP4123725A1

公开(公告)日：2023-01-25

申请号：EP21770792.6

申请日：2021-03-15

申请人： Nitto Denko Corporation

发明人： NUMATA, Yudai ,  KATSUDA, Masato ,  MATSUDA, Shoichi

IPC分类号： H01L31/0232 ,  G02B5/02 ,  G02B5/22 ,  G02B5/26

摘要： This optical filter has a back-scattering property, and the linear transmittance thereof to light of at least some wavelengths in the wavelength range of 760-2000 nm is 60% or higher. Where: the azimuth from an incidence plane when the polar angle of the direction of incidence of incident light is 0° is 20°, and the value of a bidirectional reflectance distribution function in the direction where the polar angle is -60° is BRDF (0°; 20°, -60°); the azimuth from an incidence plane when the polar angle of the direction of incidence of incident light is 30° is 20°, and the value of a bidirectional reflectance distribution function in the direction where the polar angle is -60° is BRDF (30°; 20°, -60°); and the azimuth from an incidence plane when the polar angle of the direction of incidence of incident light is 60° is 20°, and the value of a bidirectional reflectance distribution function in the direction where the polar angle is -60° is BRDF (60°; 20°, - 60°), then, for the incident light having at least some wavelengths in the wavelength range of visible light, |BRDF (0°; 20°, -60°) - BRDF (30°; 20°, -60°)|/BRDF (0°; 20°, -60°) is 1.0 or lower, and |BRDF (0°; 20°, -60°) - BRDF (60°; 20°, -60°) |/BRDF (0°; 20°, -60°) is 1.0 or lower.

公开(公告)号：EP4428749A1

公开(公告)日：2024-09-11

申请号：EP22889836.7

申请日：2022-10-25

申请人： Nitto Denko Corporation

发明人： KAWAGUCHI, Mami ,  NUMATA, Yudai ,  MATSUDA, Shoichi ,  SATO, Naoki

IPC分类号： G06K19/06

CPC分类号： G06K19/06

摘要： An optical multilayer body (100) according to the present invention has a first main surface and a second main surface that is on the reverse side of the first main surface. This optical multilayer body (100) comprises: an optical filter layer (110) which transmits infrared light, while diffusely reflecting visible light; and a recording medium layer (120) which is arranged on the second main surface side of the optical filter layer, while having a pattern that can be read with infrared light through the optical filter layer. This optical multilayer body is configured such that the pattern is not visible through the optical filter layer.

公开(公告)号：EP4123726A1

公开(公告)日：2023-01-25

申请号：EP21771352.8

申请日：2021-03-15

申请人： Nitto Denko Corporation

发明人： KATSUDA, Masato ,  NUMATA, Yudai ,  MATSUDA, Shoichi

IPC分类号： H01L31/0232 ,  G02B5/02 ,  G02B5/22 ,  G02B5/26

摘要： Disclosed is an optical filter with L* measured by the SCE method being 20 or greater, wherein: the linear transmittance with respect to light with wavelengths being at least a portion of a wavelength range from 760 nm to 2000 nm is 60% or greater; and, before and after a light resistance test wherein light of a xenon arc lamp (average integrated illuminance of light with wavelengths from 300 nm to 400 nm: 120 W/m 2 ) is shone for 300 hours, the absolute value of a change in C* measured by the SCE method using a spectroscopic colorimeter is 6 or less.

公开(公告)号：EP4113630A1

公开(公告)日：2023-01-04

申请号：EP21771070.6

申请日：2021-03-15

申请人： Nitto Denko Corporation

发明人： NUMATA, Yudai ,  KATSUDA, Masato ,  MATSUDA, Shoichi

IPC分类号： H01L31/0232 ,  G02B5/02 ,  G02B5/22 ,  G02B5/26

摘要： This optical filter 10 has an L* of at least 20 as measured by the SCE method, wherein the linear transmittance is at least 60% with respect to light the wavelength of which falls at least partially within the wavelength range of 760 nm-2,000 nm, and the temperature, at which the optical filter contracts by being heated, is at least 85°C.