Slow tool servo machining of toric lens
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-01-01 |
| Journal | AIP conference proceedings |
| Authors | Gagandeep Singh, Vinod Mishra, Harry Garg |
| Institutions | Centennial College, Central Scientific Instruments Organisation |
Abstract
Section titled āAbstractāToric surface is part of a torus that has two different radiuses in two different directions. Toric surface is mainly used in optical components. In ophthalmology applications toric optical components are used as intraocular lenses, contact lenses and eyeglasses. Toric intraocular lenses are used to correct astigmatism. Toric shapes can be produced by different methods; most common methods of production are grinding, molding and diamond turning. In this study, Diamond Turning Machine with Slow Tool Servo (STS) configuration is utilized to fabricate toric lenses. Since toric is a rotationally non-symmetric surface, it requires synchronized motion of three axis. This synchronized motion is achieved using X, Z, and C-axis of the diamond turning machine. The effect of various types of tool paths on surface quality in terms of surface finish and profile accuracy is presented. By utilizing the optimum configuration for tool path generation, the profile accuracy of 0.8Āµm and surface finish of 15 nm is achieved.