Title:
OPTICAL LAMINATE
Document Type and Number:
WIPO Patent Application WO/2024/070911
Kind Code:
A1
Abstract:
This optical laminate (100A) has a first main surface (S1) and a second main surface (S2) that is on the opposite side from the first main surface, wherein: the optical laminate includes an optical filter layer (110) that transmits infrared rays and reflects visible light, and a diffusion layer (120) that diffuses visible light; the reflectivity with respect to infrared rays having a wavelength of 850 nm is 66%; and when the second main surface is disposed on a pattern that is readable using infrared rays, the pattern being formed on a foundation having a backscatter rate of 19%, the pattern can be read using infrared rays from the first-main-surface side.
Inventors:
KATSUDA MASATO (JP)
NUMATA YUDAI (JP)
MATSUDA SHOICHI (JP)
NUMATA YUDAI (JP)
MATSUDA SHOICHI (JP)
Application Number:
PCT/JP2023/034397
Publication Date:
April 04, 2024
Filing Date:
September 22, 2023
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G06K19/06; G02B5/00; G02B5/02; G02B5/26
Domestic Patent References:
| WO2021187430A1 | 2021-09-23 |
Foreign References:
| JP2021123503A | 2021-08-30 | |||
| JP2004233988A | 2004-08-19 |
Attorney, Agent or Firm:
OKUDA Seiji (JP)
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