A-star’s Calcium Fluoride Lens
A-Star is the professional Calcium Fluoride (Caf2) Lens supplier in China and can customized various optical lens with different shape, dimention and precision. Including spherical lens, aspherical lens, achromatic lens and coating. Hope we can provide the best service for you.
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.
Factory Standard – Contact us for manufacturing limit or custom specifications.
Substrate Material: UV & IR grade CaF2
Shape: Spherical Plano-Concave, P-Convex, Concave-Convex or Aspheric
Surface Figure: λ /4 at 633nm typical
Surface Quality: 60-40 per MIL-PRF-13830B
Dimensional Tolerance: + 0.00mm, – 0.25mm
Thickness Tolerance: +/- 0.25mm
Chamfer: 0.35mm at 45° typical
Concentricity: 0.05mm
Focal Length Tolerance: +/- 0.5% typical
Antireflection Coating: User specified, R<0.25% per surface
Clear Aperture: Exceeds central 85% of dimension
Damage Threshold: 5J/cm2, 20ns, 20Hz at 1064nm
China A-Star supplying very high-purity, high-quality China Calcium Fluoride Lens.