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US 2020/0264341 A1Published application
Spectacle lens and spectacles
AssigneesHoya Lens Thailand Ltd., JINS HOLDINGS Inc.
InventorsYoichi OGO, Shunsuke SHIOYA
Life of this patent
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Abstract
Provided is a spectacle lens, having a lens substrate including a blue light absorbable compound, and a multilayer film including a chromium layer with a film thickness of 1.0 to 10.0 nm, blue light cut rate being 21.0% or more, a dominant wavelength measured at the object side surface of the spectacle lens falling within a range of 500.0 to 550.0 nm, and a dominant wavelength measured at the eyeball side surface of the spectacle lens falling within a range of 500.0 to 550.0 nm.
Claims4
A spectacle lens,
- which comprises:
- a lens substrate comprising a blue light absorbable compound, and
- a multilayer film comprising a chromium layer with a film thickness of 1.0 to 10.0 nm,
- wherein
- blue light cut rate is 21.0% or more,
- a dominant wavelength measured at an object side surface of the spectacle lens falls within a range of 500.0 to 550.0 nm, and
- a dominant wavelength measured at an eyeball side surface of the spectacle lens falls within a range of 500.0 to 550.0 nm.
4 more elements
Dependencies are inferred from the claim text.