Material Guide
Calcium Fluoride (CaF2)
Low-dispersion optical material covering UV through mid-IR applications.
Material Introduction
Calcium Fluoride is a low-dispersion material with broad transmission, commonly selected for UV-through-IR optical systems and precision spectroscopy assemblies.
Optical Performance
| Metric | Typical Value |
|---|---|
| Transmission Range | 0.2 - 8 um |
| Refractive Index (1 um) | ~1.43 |
| Dispersion | Very low |
Applications
- UV and NIR optical windows
- Spectroscopy optics
- Broadband lens groups
Comparison Notes
Compared with high-index IR materials, CaF2 has lower index and dispersion, making it attractive for broadband correction and UV-to-IR transmission balance.
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