Reflection film, windshield glass, and head-up display system

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United States of America Patent

PATENT NO 12072597
APP PUB NO 20230314669A1
SERIAL NO

18331282

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Abstract

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Provided are a reflection film, which enables high visible light transmittance, an increase in the brightness of a display image, and favorable transparency of an external tint, a windshield glass, and a head-up display system. The reflection film includes a selective reflection layer formed of a cholesteric liquid crystal layer with a cholesteric liquid crystalline phase immobilized. In each of a wavelength range of 400 nm or more and less than 500 nm and a wavelength range of 500 nm or more and less than 600 nm, a maximum value of a natural light reflectivity is 10% to 25%, the greatest difference between the greatest maximum value and the smallest minimum value of the natural light reflectivity is 3% or more, and a total value of wavelength bandwidths in a region where a reflectivity is higher than an average value of the maximum value and the minimum value of the natural light reflectivity is 20 nm to 80 nm. In a wavelength range of 600 nm or more and 800 nm or less, a maximum value of a natural light reflectivity is 10% to 25%, and a total value of wavelength bandwidths in a region where a reflectivity is higher than an average value of the maximum value and the minimum value of the natural light reflectivity is 120 nm or more.

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Patent Owner(s)

Patent OwnerAddress
FUJIFILM CORPORATION26-30 NISHIAZABU 2-CHOME MINATO-KU TOKYO 106-8620

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Anzai, Akihiro Minamiashigara, JP 33 119
Arita, Shusuke Minamiashigara, JP 22 32

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