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US 10,371,867 B2Granted
Optical component and method of manufacturing the same
AssigneeNikon-Essilor Co., Ltd.
InventorsMasaoki Tomoda, Satoru Ito, Kei Ishimura, Hirotatsu Okumura
Life of this patent
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Abstract
An optical component includes: a plastic base which has a convex surface and a concave surface; and a multilayer film which is disposed on at least the convex surface of the plastic base. The multilayer film has an average reflectivity of 2% to 10% over a wavelength range of 400 nm to 500 nm.
Claims17
A spectacle lens comprising:
- a plastic base which has a convex surface and a concave surface;
- and
- a multilayer film which is disposed on at least the convex surface of the plastic base,
- wherein the multilayer film has an average reflectivity of 4.2% to 10% over a wavelength range of 400 nm to 500 nm of blue light.
1 more element
A method of manufacturing a spectacle lens which includes a plastic base which has a convex surface and a concave surface and a multilayer film which is disposed on at least the convex surface of the plastic base, the method comprising the steps of:
- heating the plastic base;
- and
- forming the multilayer film on the plastic base after adjusting the temperature of the plastic base to a predetermined temperature by the heating step,
- wherein the step of forming the multilayer film has a process of forming a high refractive index layer having a multilayer structure by alternately applying a high refractive index material and a low refractive index material in multilayers, and a process of forming, on the high refractive index layer, a low refractive index layer having a lower refractive index than that of the high refractive index layer, and
- wherein an average reflectivity of the multilayer film over a wavelength range of 400 nm to 500 nm is 4.2% to 10% of blue light.
2 more elements
Dependencies are inferred from the claim text.