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US 2013/0260641 A1Published application
Method of calculating circumference, method of manufacturing spectacle lens, circumference calculating device and circumference calculating program
AssigneeHoya Corporation
InventorYoshihiro KIKUCHI
Life of this patent
Estimating the term…
Abstract
There is provided a circumference calculating device including an expected shape specifying part 201b configured to obtain an expected finish shape of a bevel in consideration of an interference amount of a beveling tool when beveling is performed to an uncut spectacle lens; and a theoretical circumference calculating part 201d configured to obtain a bevel circumference of the spectacle lens having the expected finish shape obtained by the expected shape specifying part 201b, as a theoretical circumference of this spectacle lens.
Claims13
A method of calculating a circumference, comprising:
- obtaining an expected finish shape of a bevel in consideration of an interference amount of a beveling tool when beveling is performed to an uncut spectacle lens;
- and
- setting a bevel circumference in a spectacle lens having the expected finish shape as a theoretical circumference of the spectacle lens.
A circumference calculating device, comprising:
- an expected shape specifying part configured to obtain an expected finish shape of a bevel in consideration of an interference amount of a beveling tool when beveling is performed to an uncut spectacle lens;
- and
- a theoretical circumference calculating part configured to obtain a bevel circumference of a spectacle lens having the expected finish shape obtained by the expected shape specifying part, as a theoretical circumference of the spectacle lens.
A circumference calculating program, comprising a computer that functions as:
- an expected shape specifying part configured to obtain an expected finish shape of a bevel in consideration of an interference amount of a beveling tool when beveling is performed to an uncut spectacle lens;
- and
- a theoretical circumference calculating part configured to obtain a bevel circumference of a spectacle lens having the expected finish shape obtained by the expected shape specifying part, as a theoretical circumference of the spectacle lens.
A method of calculating a circumference, comprising:
- specifying an expected shape for obtaining an expected finish shape of a bevel in consideration of an interference amount of a beveling tool when beveling is performed to an uncut spectacle lens;
- specifying a contact mode of a probe of a measuring machine that performs a bevel circumference measurement of a spectacle lens, in contact with a bevel of the spectacle lens having the expected finish shape;
- and
- obtaining a bevel circumference of the spectacle lens having the expected finish shape based on a locus of the probe when the probe moves in a circumferential direction of the spectacle lens in contact with the bevel, as a theoretical circumference of the spectacle lens.
1 more element
A method of manufacturing a spectacle lens, comprising:
- specifying an expected shape for obtaining an expected finish shape of a bevel in consideration of an interference amount of a beveling tool when beveling is performed to an uncut spectacle lens;
- specifying a contact mode for obtaining a contact mode of a probe of a measuring machine that performs measurement of a bevel circumference of a spectacle lens, in contact with a bevel of the spectacle lens having the expected finish shape;
- calculating a theoretical circumference for obtaining a bevel circumference of the spectacle lens having the expected finish shape, based on a locus of the probe when the probe moves in a circumferential direction of the spectacle lens in contact with the bevel, as a theoretical circumference of the spectacle lens;
- measuring a bevel circumference of a spectacle lens that has undergone beveling, using the measuring machine;
- and
- judging defect and non-defect of a lens performed to the spectacle lens after beveling, by comparing a theoretical circumference obtained in calculating the theoretical circumference, and a measurement result obtained in measuring the circumference after beveling.
3 more elements
A circumference calculating device, comprising:
- an expected shape specifying part configured to obtain an expected finish shape of a bevel in consideration of an interference amount of an edging tool when beveling is performed to an uncut spectacle lens;
- a contact mode specifying part configured to obtain a contact mode of a probe of a measuring machine that performs measurement of a bevel circumference of a spectacle lens, in contact with a bevel of the spectacle lens having the expected finish shape;
- and
- a theoretical circumference calculating part configured to obtain a bevel circumference of the spectacle lens having the expected finish shape, based on a locus of the probe when the probe moves in a circumferential direction of the spectacle lens in contact with the bevel, as a theoretical circumference of the spectacle lens.
1 more element
A circumference calculating program comprising a computer that functions as
- an expected shape specifying part configured to obtain an expected finish shape of a bevel in consideration of an interference amount of a beveling tool when beveling is performed to an uncut spectacle lens;
- a contact mode specifying part configured to obtain a contact mode of a probe of a measuring machine that performs measurement of a bevel circumference of a spectacle lens, in contact with a bevel of the spectacle lens having the expected finish shape;
- and
- a theoretical circumference calculating part configured to obtain a bevel circumference of the spectacle lens having the expected finish shape obtained by the expected shape specifying part, based on a locus of the probe when the probe moves in a circumferential direction of the spectacle lens in contact with the bevel, as a theoretical circumference of the spectacle lens.
1 more element
Dependencies are inferred from the claim text.