Spectacle lens and spectacles
AssigneeHoya Lens Thailand Ltd.
InventorsYuki IGUCHI, Shohei MATSUOKA
Life of this patent
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Abstract
A spectacle lens and a related technology thereof in which when a freely-selected numerical value of 360 or more and 450 or less is α, in a spectral transmittance curve in which a vertical axis is a spectral transmittance and a horizontal axis is a wavelength, a value of a transmittance when the wavelength of light is α nm is 10% or less, the spectral transmittance curve has a first local maximum value in a range in which the wavelength of light is (α+20) nm or more and less than (α+30) nm, and the spectral transmittance curve has a first local minimum value in a range in which the wavelength of light is (α+30) nm or more and (α+40) nm or less.
Claims12
A spectacle lens in which
- when a freely-selected numerical value of 360 or more and 450 or less is α,
- in a spectral transmittance curve in which a vertical axis is a spectral transmittance and a horizontal axis is a wavelength,
- a value of a transmittance when the wavelength of light is α nm is 10% or less,
- the spectral transmittance curve has a first local maximum value in a range in which the wavelength of light is (α+20) nm or more and less than (α+30) nm, and
- the spectral transmittance curve has a first local minimum value in a range in which the wavelength of light is (α+30) nm or more and (α+40) nm or less.
Dependencies are inferred from the claim text.