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IR Windows Calcium Fluoride CaF2 Windows

Calcium Fluoride windows and lenses for UV and IR spectrum. Custom made CaF2 windows, CaF2 lenses and wedges according to customer's specifications. CaF2 windows up to 220mm diameter; CaF2 wedges, prisms and CaF2 mirrors; Excimer CaF2 optics, Raman grade CaF2 optics and etc.

  • Product Origin:

    China
  • Shipping Port:

    Fuzhou, China
  • Lead Time:

    4 weeks
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  • Product Detail

5.1. What’s Calcium fluoride used for?

Calcium fluoride is often used in spectroscopic windows and lenses due to its high transmission from 250nm to 7μm. Its low absorption and high damage threshold make it a popular choice for excimer laser optics. Calcium fluoride's low index or refraction allows it to be used without an anti-reflective coating. The Knoop hardness of calcium fluoride is 158.3. Calcium Fluoride (CaF2) Windows manufactured from vacuum UV grade calcium fluoride are commonly found in cryogenically cooled thermal imaging systems.


HG OPTRONICS provide artificially-crystallized calcium fluoride components available in UV grade and IR Grade.


5.2. CaF2 Windows Specifications

Parameters

Commercial grade

Material

Calcium Fluoride single crystal ( UV or IR)

Diameter Tolerance

+0/-0.10mm

Thickness Tolerance

±0.10mm

Clear Aperture

> 85%

Surface Quality

60-40 S/D

Parallelism

3 arc min

Surface Flatness

λ/4 per 25mm

Chamfer

0.15~0.35mm×45°

Coating

Optional


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