Spectacle lens chamfering data preparing method, spectacle lens chamfering method, spectacle lens chamfering data preparing apparatus, and spectacle lens chamfering apparatus
AssigneeTopcon Corporation
InventorsYoshiyuki Hatano, Takahiro Watanabe, Toshihiro Iwai
Life of this patent
Estimating the term…
Abstract
Methods and apparatuses for spectacle lens chamfering, wherein a predetermined chamfer width is inputted from a peripheral edge of a lens shape of a spectacle frame and a chamfer locus on a refraction plane of a spectacle lens is obtained.
Claims29
A spectacle lens chamfering data creation method comprising steps of:
- entering spectacle frame lens shape information and a predetermined chamfer width;
- and
- calculating a chamfer locus on a refraction plane of a spectacle lens having the lens shape obtained by using the lens shape information.
A spectacle lens chamfering data creation method comprising steps of:
- entering spectacle frame lens shape information and a predetermined chamfer width;
- and
- obtaining data on a lens edge/shape along a chamfer locus ion a refraction plane of a spectacle lens having the lens shape obtained by using the lens shape information.
A spectacle lens chamfering data creation method comprising steps of:
- entering spectacle frame lens shape information and a reference chamfer width at a radius vector at a predetermined angle of the lens shape information;
- entering a minimum chamfer width at a radius vector at another angle of the lens shape information;
- and
- obtaining a chamfer locus on a refraction plane of a spectacle lens by using a position of the reference chamfer as one reference and a position of the minimum chamfer as another reference.
A spectacle lens chamfering data creation method comprising steps of:
- entering spectacle frame lens shape information and a reference chamfer width at a radius vector at a predetermined angle of the lens shape information;
- entering a minimum chamfer width at a radius vector at another angle of the lens shape information;
- obtaining a chamfer locus on a refraction plane of a spectacle lens by using a position of the reference chamfer as one reference and a position of the minimum chamfer as another reference;
- and
- obtaining data on a spectacle lens edge thickness/shape along the chamfer locus.
An apparatus for preparing spectacle lens chamfering data, the apparatus comprising a lens shape measuring apparatus for inputting lens shape data of a spectacle frame, an operation panel for inputting a predetermined chamfer width from a peripheral edge of the inputted lens shape, and a computing means for determining a chamfer locus on a refraction plane of a spectacle lens from the inputted chamfer width.
An apparatus for preparing spectacle lens chamfering data, the apparatus comprising a lens shape measuring apparatus for inputting lens shape data of a spectacle frame, an operation panel for inputting a predetermined chamfer width from a peripheral edge of the inputted lens shape, a computing means for determining a chamfer locus on a refraction plane of a spectacle lens from the inputted chamfer width, and a feeler for measuring edge thickness shape data of the spectacle lens along the chamfer locus thus determined.
An apparatus for preparing spectacle lens chamfering data, the apparatus comprising a lens shape measuring apparatus for inputting lens shape data of a spectacle lens, an operation panel for inputting a chamfer width of a reference chamfer from a first peripheral edge of the inputted lens shape and inputting a chamfer width of a minimum chamfer from a second peripheral edge of the lens shape in another meridian direction, and a computing means for determining a chamfer locus on a refraction plane of a spectacle lens with a chamfer end position of said reference chamfer and that of said minimum chamfer as a reference.
An apparatus for preparing spectacle lens chamfering data, the apparatus comprising a lens shape measuring apparatus for inputting lens shape data of a spectacle frame, an operation panel for inputting a chamfer width of a reference chamfer from a first peripheral edge of the inputted lens shape and inputting a chamfer width of a minimum chamfer from a second peripheral edge of the lens shape in another meridian direction, a computing means for determining a chamfer locus on a refraction plane of a spectacle lens with a chamfer end position of said reference chamfer and that of said minimum chamfer as a reference, and a feeler for measuring edge thickness shape data of the spectacle lens along said chamfer locus.
Dependencies are inferred from the claim text.