Spectacle lens for car drivers
US-2017219848-A1 · Aug 3, 2017 · US
Spectacle lens and spectacles
US11513258B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11513258-B2 |
| Application number | US-201816651548-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 28, 2018 |
| Priority date | Sep 29, 2017 |
| Publication date | Nov 29, 2022 |
| Grant date | Nov 29, 2022 |
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- Title
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Abstract
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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.
First claim
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The invention claimed is: 1. 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. 2. The spectacle lens according to claim 1 , wherein multilayer films are situated on an object side surface and on an eyeball side surface of the lens substrate, and the multilayer film comprising a chromium layer is the multilayer film situated on the object side surface of the lens substrate. 3. Spectacles, which comprises the spectacle lenses according to claim 2 . 4. The spectacle lens according to claim 2 , wherein the average reflectance in the wavelength region of a wavelength of 400 to 500 nm measured at the object side surface of the spectacle lens is 2.00% or less. 5. Spectacles, which comprises the spectacle lenses according to claim 1 . 6. The spectacle lens according to claim 1 , wherein the average reflectance in the wavelength region of a wavelength of 400 to 500 nm measured at the object side surface of the spectacle lens is 2.00% or less.
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Frequently asked questions
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- What does patent US11513258B2 cover?
- 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 e…
- Who is the assignee on this patent?
- Hoya Lens Thailand Ltd, Jins Holdings Inc
- What technology area does this patent fall under?
- Primary CPC classification G02B1/115. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 29 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).