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US 6,887,405 B2Granted
Method for cutting optical lens and/or molding die therefor
AssigneePENTAX Corporation
InventorsTakashi Tohara, Takashi Numao
Life of this patent
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Abstract
A cutting method for cutting an optical lens and/or a molding die therefor includes rotating the optical lens and/or the molding die about the optical axis, moving a cutting blade in a direction perpendicular to an optical axis to cut the optical lens and the molding die, and varying the feed pitch of the cutting blade in the direction perpendicular to the optical axis in accordance with the position of the optical lens and/or the molding die in the radial direction.
Claims6
A cutting method for cutting an optical lens and/or a molding die therefore, comprising:
- rotating the optical lens and/or the molding die about the optical axis;
- moving a cutting blade in a direction perpendicular to an optical axis to cut the optical lens and/or the molding die;
- and
- varying the feed pitch of the cutting blade in the direction perpendicular to the optical axis in accordance with the position of the optical lens and/or the molding die in the radial direction.
1 more element
Dependencies are inferred from the claim text.