Method for manufacturing spectacle lens, spectacle lens and spectacles
AssigneeHoya Lens Thailand Ltd.
InventorShigeki OOKUBO
Life of this patent
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Abstract
A method for manufacturing a spectacle lens and a related technique thereof, includes: performing desired marking processing by irradiating one surface of a spectacle lens with laser, the spectacle lens having an object-side surface and an eyeball-side surface each having a different anti-reflection film, the marking processing including: determining an applicable wavelength of the laser to be used; selecting a surface with an anti-reflection film having a relatively low reflectance to the applied wavelength, out of the object-side surface and the eyeball-side surface; and performing laser irradiation to the selected surface using the applied wavelength.
Claims20
A method for manufacturing a spectacle lens, the method comprising:
- performing desired marking processing by irradiating one surface of a spectacle lens with laser, the spectacle lens having an object-side surface and an eyeball-side surface each having a different anti-reflection film,
- the marking processing comprising:
- determining an applicable wavelength of the laser to be used;
- selecting a surface with an anti-reflection film having a relatively low reflectance to the applied wavelength, out of the object-side surface and the eyeball-side surface;
- and
- performing laser irradiation to the selected surface using the applied wavelength.
A method for manufacturing a spectacle lens, the method comprising:
- performing desired marking processing by irradiating one surface of a spectacle lens with laser, the spectacle lens having an object-side surface and an eyeball-side surface each having a different anti-reflection film,
- the marking processing comprising:
- selecting a surface with a relatively low reflectance for light in a predetermined wavelength range, out of the object-side surface and the eyeball-side surface;
- and
- applying laser irradiation to the selected surface using a laser beam having a wavelength within the predetermined wavelength range.
A spectacle lens, which is a spectacle lens whose one surface is subjected to laser marking, having different anti-reflection films provided on an object-side surface and an eyeball-side surface,
- wherein the anti-reflection film provided on one surface has a lower reflectance than the anti-reflection film provided on the other surface, to at least light with a wavelength of 200 to 400 nm.
A spectacle lens, which is a spectacle lens whose one surface is subjected to a laser marking, having different anti-reflection films provided on an object-side surface and an eyeball-side surface,
- wherein the anti-reflection film provided on one surface has a lower reflectance than the anti-reflection film provided on the other surface, to at least light with a wavelength of 800 to 1100 nm.
Dependencies are inferred from the claim text.