Fabrication and polishing
We polish various optical materials with high precision. We support the single-piece and mass production of lenses, plates, and products of other shapes having diameters from small to large.
| CaF2 | BaF2 | |
|---|---|---|
| Size | Plane glassφ10*1 - 200mm (Visible light grade) φ10*1 - 150mm (UV grade) |
φ10 - 120mm |
| Machined shape | Spherical lens, Plane glass | Plane glass |
| Curvature Radius Tolerance*2 | < ±2 Fr (Measurement wavelength λ＝546nm) |
< ±2 Fr (Measurement wavelength λ＝546nm) |
| Profile irregularity*2, 3 | < λ/4 (Measurement wavelength λ＝633nm) |
< λ/2 (Measurement wavelength λ＝633nm) |
| Surface roughness | < RMS 1.0nm | < RMS 2.0nm |
| Diameter tolerance | ±0.01mm | ±0.01mm |
| Thickness tolerance | ±0.05mm | ±0.1mm |
| Eccentricity | < 30 seconds | - |
| Appearance accuracy*2 | CANON OPTRON's standards | CANON OPTRON's standards |
*1 For plane glass. In the case of a spherical lens, it becomes 30.
*2 Within 95% of Outer Diameter.
*3 Base on the original lens.
The above specications may not be satised depending on the shape.
For other specications, please contact us separately.
Polished surface accuracy of fluorite
Polished surface roughness of fluorite
