Spectacle lens producing method, spectacle lens producing system, and spectacle lens
AssigneeHoya Lens Thailand Ltd.
InventorShigeki OOKUBO
Life of this patent
Estimating the term…
Abstract
A method for producing a spectacle lens from a lens material and includes: a marking step 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 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 on a convex surface of the lens material by pulse laser, the identification information mark corresponding to lens identification information of the spectacle lens;
- and
- a hardcoating step of applying a hard film on the spectacle lens, wherein:
- the identification information mark is marked in an area of the lens material to beused as the spectacle lens, and comprises dots separated from each other formed by pulse irradiation of the pulse laser,
- said dots each having a depth and a diameter so that, if the mark is magnified, the mark is visible through the hard film,
- said pulse laser having a pulse width of pico second order or femto second order and having a wavelength of 355 nm to 1064 nm.
Dependencies are inferred from the claim text.