30 Sep 2022 Calcium Fluoride is often used in spectroscopic windows and lenses due to its high transmission from 350nm to 7μm. Calcium Fluoride is also commonly found in cryogenically cooled thermal imaging systems. Its low absorption and high damage threshold makes it a popular choice for excimer laser optics. Calcium Fluoride's low refractive index allows it to be used without an antireflective coating. The Knoop hardness of Calcium Fluoride is 158.3.
Specifications:
| Material |
CaF2 |
| Diameter |
1.5-450mm |
| Surface Figure |
λ/2 |
| Diameter Tolerance |
+0.1, -0.1 mm |
| Thickness Tolerance |
±0.2 mm |
| Paraxial Focal Length |
±2% |
| Centration |
<3 arc minutes |
| Clear Aperture |
>85% |
| Surface Quality |
60-40 scratch and dig |
| Coating |
Specified by customers |
Application:
Microscopic instruments
Optical metrological instruments
Laser protective windows
Optical instruments of surveying and mapping
Machine vision devices
Optical detection instruments
The popular science optical
A digital optical
Optical test instruments
Fiber optic instruments
Laser Instruments
Electro-optic displays
Medical optical
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