Spectacle lens and method for producing same
One aspect of the present invention pertains to a spectacle lens having reflection characteristics in which the following are satisfied in a lower region in which at least one of an object-side surface and an eye-side surface is positioned lower than a fitting point or the optical center when the le...
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Format | Patent |
Language | English |
Published |
20.07.2017
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Subjects | |
Online Access | Get full text |
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Abstract | One aspect of the present invention pertains to a spectacle lens having reflection characteristics in which the following are satisfied in a lower region in which at least one of an object-side surface and an eye-side surface is positioned lower than a fitting point or the optical center when the lens is worn: (1) the average reflectance at normal incidence in a 400 to 500 nm wavelength region is in a range of 1.0 to 15%; and (2) the average reflectance at normal incidence exceeds the average reflectance at normal incidence in a 400 to 500 nm wavelength region of an upper region positioned higher than the lower region when the lens is worn. |
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AbstractList | One aspect of the present invention pertains to a spectacle lens having reflection characteristics in which the following are satisfied in a lower region in which at least one of an object-side surface and an eye-side surface is positioned lower than a fitting point or the optical center when the lens is worn: (1) the average reflectance at normal incidence in a 400 to 500 nm wavelength region is in a range of 1.0 to 15%; and (2) the average reflectance at normal incidence exceeds the average reflectance at normal incidence in a 400 to 500 nm wavelength region of an upper region positioned higher than the lower region when the lens is worn. |
Author | Nishimoto, Keiji |
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Snippet | One aspect of the present invention pertains to a spectacle lens having reflection characteristics in which the following are satisfied in a lower region in... |
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SubjectTerms | CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CONTACT LENSES DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION |
Title | Spectacle lens and method for producing same |
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