Optical material, composition for optical material, and use thereof
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United States of America Patent
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Apr 3, 2018
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app pub date -
Feb 27, 2014
filing date -
Feb 27, 2013
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Abstract
The optical material of the present invention contains one or more kinds of ultraviolet absorber (a) having a maximum absorption peak within a range of equal to or greater than 350 nm and equal to or less than 370 nm, in which a light transmittance of the optical material having a thickness of 2 mm satisfies the following characteristics (1) to (3),
- (1) a light transmittance at a wavelength of 410 nm is equal to or less than 10%,(2) a light transmittance at a wavelength of 420 nm is equal to or less than 70%, and(3) a light transmittance at a wavelength of 440 nm is equal to or greater than 80%.
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