04-02-2021 дата публикации
Номер: US20210033886A1
Provided are a lens for spectacles containing a resin having a refractive index of 1.65 or more and an ultraviolet absorbing agent A having, in a case where an absorbance at a maximum absorption wavelength is 1.0, an absorbance ratio at 410 nm of 0.10 or less and an absorbance ratio at 400 nm of 0.1 or more, where a proportion of the absorbance ratio at 400 nm to the absorbance ratio at 410 nm is 5.0 or more, and spectacles. 1. A lens for spectacles comprising:a resin having a refractive index of 1.65 or more; andan ultraviolet absorbing agent A having, in a case where an absorbance at a maximum absorption wavelength is 1.0, an absorbance ratio at 410 nm of 0.10 or less and an absorbance ratio at 400 nm of 0.1 or more, where a proportion of the absorbance ratio at 400 nm to the absorbance ratio at 410 nm is 5.0 or more.2. The lens for spectacles according to claim 1 ,wherein the ultraviolet absorbing agent A is at least one selected from the group consisting of a benzoxazole compound, a benzoxazinone compound, and a benzodithiolane compound.4. The lens for spectacles according to claim 3 ,wherein the ultraviolet absorbing agent A contains the compound represented by Formula (1), and{'sup': '1', 'Vin Formula (1) contains an alkoxy group.'}5. The lens for spectacles according to claim 3 ,wherein the ultraviolet absorbing agent A contains the compound represented by Formula (1), and{'sup': '1', 'Arin Formula (1) is a thiophene group.'}6. The lens for spectacles according to claim 3 ,wherein the ultraviolet absorbing agent A contains the compound represented by Formula (4), and{'sup': '2', 'Arin Formula (4) is a thiophene group.'}7. The lens for spectacles according to claim 3 ,wherein the ultraviolet absorbing agent A contains the compound represented by Formula (2), and{'sup': 1', '2', '6', '7', '8', '7', '6', '8, 'sub': '2', 'in Formula (2), EWGand EWGeach independently represent —COOR, —SOR, —CN, or —COR, where Rrepresents an aryl group, and Rand Reach independently ...
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