OPTICAL GLASS PLATE
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United States of America Patent
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Issued Date -
Oct 6, 2022
app pub date -
Oct 21, 2020
filing date -
Oct 31, 2019
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Abstract
Provided is an optical glass plate having a high refractive index and excellent visible light transmittance. An optical glass plate characterized by containing as a glass composition at least one selected from Nb2O5, La2O3, and Gd2O3, the optical glass plate having a refractive index (nd) of 1.90 to 2.30 and an internal transmittance τ450 of 75% or greater for a thickness of 10 mm at a wavelength of 450 nm.
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