FAR-INFRARED TRANSMITTING MEMBER AND METHOD FOR MANUFACTURING FAR-INFRARED TRANSMITTING MEMBER
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United States of America
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Dec 26, 2024
app pub date -
Sep 5, 2024
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Sep 5, 2024
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Abstract
To appropriately transmit far-infrared rays and improve scratch resistance. A far-infrared transmitting member (20) includes a base material (30) that transmits far-infrared rays and a first functional film (32) formed on the base material (30), in which an average transmittance for light having a wavelength of 8 μm to 12 μm is 50% or more, an outermost layer (36) of the first functional film (32) is a layer containing ZrO2 as a main component, a content of ZrO2 is 50 mass % or more and 100 mass % or less with respect to the whole outermost layer (36), and a refractive index of the outermost layer (36) with respect to light having a wavelength of 550 nm is 2.05 or more.
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