CaF2 Lens machining optimization by using the laser assisted DTM
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2020-08-20 |
| Authors | Donghwan Kim, Hwan-ho Maeng, Hyounguk Jang, Jin Seong Jeong, SeungâHyun Kim |
| Institutions | Hanbat National University |
| Citations | 1 |
Abstract
Section titled âAbstractâThe CaF2 optical lens was widely used from ultraviolet- to infrared- wavelength range. The CaF2 has optical properties with high transmittance and low reflectance. Usually, it used for laser optics, excimer laser, CaF2 Lens, ultraviolet to infrared lens and cryogenic cooling thermal imaging systems. It is usually difficult to machining using natural diamond tools, because CaF2 is a brittle material. In theoretical calculations and experimental verification, we executed the ultra-precision machining of CaF2 lens by using the Single-point diamond turning machine(DTM) with laser-assisted modules. The machining of CaF2 materials is affect the negative angle of a diamond tool and laser power, etc. Repeated experiments show that surface of the CaF2 lens more than 150% better by using laser-assisted modules and negative angle tools than conventional DTM machining.