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Calcium Fluoride Lens

Cylindrical Lenses
Aspheric Lenses
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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 make 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

  • 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, – 0.1mm
  • Thickness Tolerance: +/- 0.1mm
  • 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

Contact us for manufacturing limits or custom specifications.

 

IR GRADE All measurements in mm
Part Number Nominal Diameter 800nm 1064nm 2940nm 5000nm Radius
F D F F F F R TC TE
PLCX-25.4-20.6-CFIR 50 25.4 47.8 48.1 49.3 51.6 20.6 7.4 3
PLCX-25.4-31.4-CFIR 75 25.4 72.9 73.2 75 78.6 31.4 5.7 3
PLCX-25.4-41.9-CFIR 100 25.4 97.3 97.8 100.1 105 41.9 5 3
PLCX-38.1-41.9-CFIR 100 38.1 97.3 97.8 100.1 105 41.9 8.6 4
PLCX-25.4-62.7-CFIR 150 25.4 145.7 146.4 150 157.2 62.7 4.3 3
PLCX-25.4-83.8-CFIR 200 25.4 194.7 195.7 200.5 210.2 83.8 4 3
PLCX-25.4-104.0-CFIR 250 25.4 241.6 242.7 248.7 260.7 104 3.8 3
PLCX-25.4-210.0-CFIR 500 25.4 487.8 490.1 502.1 526.4 210 3.4 3
PLCX-25.4-417.7-CFIR 1000 25.4 970.1 974.7 998.5 1046.9 417.7 3.2 3

 

UV GRADE All measurements in mm
Part Number Nominal Diameter 193nm 212nm 248nm 308nm Radius
F D F F F F R TC TE
PLCX-12.7-11.9-CFUV 25 12.7 23.6 24.4 25.3 23.2 11.9 3.8 2
PLCX-25.4-23.6-CFUV 50 25.4 47 48.5 50.4 52.1 23.6 6.7 3
PLCX-25.4-35.0-CFUV 75 25.4 69.8 72.1 74.8 77.3 35 5.4 3
PLCX-25.4-46.4-CFUV 100 25.4 92.5 95.6 99.1 102.5 46.4 4.8 3
PLCX-38.1-46.4-CFUV 100 38.1 92.5 95.6 99.1 102.5 46.4 8.1 4
PLCX-25.4-70.6-CFUV 150 25.4 140.8 145.4 150.9 156 70.6 4.2 3
PLCX-50.8-70.6-CFUV 150 50.8 140.8 145.4 150.9 156 70.6 9.7 5
PLCX-50.8-93.2-CFUV 200 50.8 185.9 192 199.2 206 93.2 8.6 5
PLCX-25.4-118.0-CFUV 250 25.4 235.2 243 252.1 206.7 118 3.7 3
PLCX-25.4.231.8-CFUV 500 25.4 462.2 477.4 495.3 512.2 231.8 3.3 3
PLCX-50.8-231.8-CFUV 500 50.8 462.2 477.4 495.3 512.2 231.8 6.4 5
PLCX-25.4-469.5-CFUV 1000 25.4 936.2 966.9 1003.2 1037.5 469.5 3.2 3
PLCX-50.8-469.5-CFUV 1000 50.8 936.2 966.9 1003.2 1037.5 469.5 5.7 5
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