Title:
LAMINATE, SIGHT LINE TRACKING SYSTEM, AND HEAD-MOUNTED DISPLAY
Document Type and Number:
WIPO Patent Application WO/2023/282261
Kind Code:
A1
Abstract:
The present invention provides: a laminate that does not impair image viewability and that is excellent in clarity of reflected light; a sight line tracking system using the laminate; and a head-mounted display that is equipped with the sight line tracking system. The present invention comprises a near infrared reflecting layer and a near infrared absorbing layer, wherein visible light transmittance is 60% or higher, the near infrared absorbing layer contains a near infrared absorptive compound, and expression (1) and expression (2) are satisfied. (1): Δθ1 ≤ 3°, (2): R2/R1 ≤ 0.1, where: Δθ1 is the half-width of the near infrared reflected light peak with highest intensity which is obtained from the result of measuring the angular dependence of near infrared light intensity reflected by the near infrared reflecting layer; R1 is the highest near infrared reflected light intensity in the near infrared reflected light peak which is obtained from the result of measuring the angular dependence of near infrared light intensity reflected by the near infrared reflecting layer; and R2 is the second highest near infrared reflected light intensity in the near infrared reflected light peak which is obtained from the result of measuring the angular dependence of near infrared light intensity reflected by the near infrared reflecting layer.
Inventors:
HISANAGA KAZUYA (JP)
HIRAI YUKI (JP)
SASAKI KOUITSU (JP)
MORISHIMA SHINICHI (JP)
HIRAI YUKI (JP)
SASAKI KOUITSU (JP)
MORISHIMA SHINICHI (JP)
Application Number:
PCT/JP2022/026712
Publication Date:
January 12, 2023
Filing Date:
July 05, 2022
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/22; B32B7/023; G02B5/26; G02B5/30
Domestic Patent References:
| WO2017056909A1 | 2017-04-06 |
Foreign References:
| US20190384388A1 | 2019-12-19 | |||
| JP2018173608A | 2018-11-08 | |||
| CN110927853A | 2020-03-27 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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