Home / Custom / Optical Components / Infrared Optics / Calcium Fluoride(CaF2) Lens 
Calcium Fluoride (CaF2) Lenses are made of calcium fluoride substrate. Calcium fluoride material has a wide transmission spectrum range (180nm-8.0μm), with high damage threshold, low fluorescence, high uniformity and soft physical properties, is used as a basis for a variety of optical components.
Optical glass such as K9, fused silica, sapphire, MgF2, silicon (Si), ZnSe, ZnS, etc. These materials possess high transmittance, low absorption, low scattering, uniform refractive index, and specific dispersion characteristics.
Precisely hemispherical. The machining precision of the center and radius of curvature of the sphere is extremely high.
The surface is precision polished to an optical grade of 10-5 to ensure image quality and reduce scattering and aberrations.
An AR coating is typically applied to the concave surface to maximize the transmittance of specific wavelengths of light (e.g. visible light) and reduce reflection loss.
Material | Calcium Fluoride (CaF2) |
|---|---|
| Focal length tolerance | ± 3% |
Dimension tolerance | ± 1% |
Thickness tolerance | ± 0.03mm |
Surface accurcay | △/v=0.3nm |
Surface quality | 10/5 |
Centration | < 1 arc min |
Clear aperture | > 90% |
Chamfer | < 0.1 |
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