Spectacle lens producing method, spectacle lens producing system, and spectacle lens
AssigneeHoya Lens Thailand Ltd.
InventorShigeki Ookubo
Life of this patent
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Abstract
The present invention is a method for producing a spectacle lens from a lens material, and includes: a marking step (step S10) of marking an identification mark for identifying the spectacle lens, and a processing information mark which is used to process a lens blank and includes a tray identification 2D code, a tray identification code, a shape line and a position mark by forming a hole or a groove in a convex surface of the lens material by laser; and a concave surface machining processing step (step S13) of reading the processing information mark, and machining a concave surface of the lens blank based on the read processing information mark.
Claims10
A method for producing a spectacle lens from a lens material, the method comprising:
- a marking step of marking an identification information mark and a processing information mark in a convex surface of the lens material by pulse laser, the identification information mark being used for identifying the spectacle lens and the processing information mark being used to process the lens material;
- a concave surface machining step of reading the processing information mark, and machining a concave surface of the lens material based on the read processing information mark;
- and
- a hardcoating step of forming a hard film on the lens, wherein:
- a part of the identification information mark is constituted by an unique number assigned to the spectacle lens,
- the unique number of the identification information mark is marked in an area of the lens material to be used as the spectacle lens, and is constituted by dots separated from each other and formed by pulse irradiation of the pulse laser,
- the processing information mark includes an identification code marked on an outer side of an area of the lens material to be used as the spectacle lens,
- a diameter of each of the dots is 5 μm or more and 30 μm or less, and
- a depth of each of the dots is 0.1 μm or more and 3 μm or less.
A system which produces a spectacle lens from a lens material, the system comprising:
- a design information database in which an identification information mark for identifying the spectacle lens and prescription information of the spectacle lens are associated and recorded;
- a marking device which marks the identification information mark and a processing information mark in a convex surface of the lens material by pulse laser, the processing information mark being used to process the lens material;
- and
- a concave surface machining device which reads the processing information mark, and machines a concave surface of the lens material based on the read processing information mark, wherein:
- a part of the identification information mark is constituted by an unique number assigned to the spectacle lens,
- the unique number of the identification information mark is marked in an area of the lens material to be used as the spectacle lens, and is constituted by dots separated from each other and formed by pulse irradiation of the pulse laser,
- the processing information mark includes an identification code marked on an outer side of an area of the lens material to be used as the spectacle lens,
- a diameter of each of the dots is 5 μm or more and 30 μm or less, and
- a depth of each of the dots is 0.1 μm or more and 3 μm or less.
A spectacle lens which is formed by machining a concave surface of a lens material, including a hard film on the lens material, wherein:
- an identification information mark and a processing information mark are marked in a convex surface, the identification information mark being used for identifying the spectacle lens and the processing information mark being used to process the lens material,
- a part of the identification information mark is constituted by an unique number assigned to the spectacle lens,
- the unique number of the identification information mark is marked in an area of the lens material to be used as the spectacle lens, and is constituted by dots separated from each other,
- the processing information mark includes an identification code marked on an outer side of an area of the lens material to be used as the spectacle lens,
- a diameter of the dots is 5 μm or more and 30 μm or less, and
- a depth of each of the dots is 0.1 μm or more and 3 μm or less.
Dependencies are inferred from the claim text.