Method for drilling an ophthalmic lens in a helical trajectory and associated drilling device
US9919453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2014 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Apr 15, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/307616
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for drilling an ophthalmic lens (10) includes the following steps: —memorizing the desired shape and dimensions of a drill hole (701; 702; 703) to be drilled in the ophthalmic lens (10) and the position of the opening of this drill hole on one of the faces (11, 12) of the ophthalmic lens; —positioning a drilling tool (80) facing the memorized position of the hole to be drilled; —determining a control setpoint for the transverse movement and axial advance of the drilling tool; and —drilling the ophthalmic lens according to the control setpoint. The control setpoint for the transverse movement and axial advance of the drilling tool forces the point of this drilling tool, on at least one drilling run, to follow a helical or pseudohelical trajectory depending on the desired shape and dimensions of the drill hole. An associated drilling device is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.