Mold manufacturing method, optical member manufacturing method, and spectacle lens
AssigneeHoya Lens Thailand Ltd.
InventorsShigeki OOKUBO, Takako ISHIZAKI
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Abstract
A mold manufacturing method, including: preparing a glass mold formed of a glass material, as a molding mold for manufacturing an optical member having convex defocus portions on at least one of optical surfaces; and irradiating a surface of the glass mold for forming the optical surface, with a short-pulse laser beam to form concave portions corresponding to the defocus portions.
Claims11
A mold for manufacturing a spectacle lens having optical surfaces on an object side and an eyeball side respectively,
- the spectacle lens comprising:
- defocus regions where defocus portions are formed, and base regions where the defocus portions are not formed, on at least one of the optical surfaces,
- wherein the defocus portions are formed at a plurality of locations, and when the defocus portions have a shape of X-fold rotational symmetry and an arrangement of the defocus portions is Y-fold rotational symmetry, both X and Y are multiples of 3 or both X and Y are multiples of 4.
A manufacturing method of mold for manufacturing a spectacle lens having optical surfaces on an object side and an eyeball side respectively,
- the spectacle lens comprising:
- defocus regions where defocus portions are formed, and base regions where the defocus portions are not formed, on at least one of the optical surfaces,
- wherein the defocus portions are formed at a plurality of locations, and when the defocus portions have a shape of X-fold rotational symmetry and an arrangement of the defocus portions is Y-fold rotational symmetry, both X and Y are multiples of 3 or both X and Y are multiples of 4.
Dependencies are inferred from the claim text.