Calcium Fluoride DCX Lenses

  • Greater than 90% Transmission from 350nm-7µm
  • Low Index of Refraction

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.

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Description Stock No. Price In Stock  
Showing 1-6 of 6 Items | Sort by Spec
CaF2 Double-Convex Lens, 25.4mm Diameter x 25.4mm FL
NT47-056 $369.00 Click to receive an email with delivery information. Click to add this item to your cart.
Substrate CaF2
Diameter (mm) 25.40
Effective Focal Length EFL @ 5.0μm (mm) 25.40
Effective Focal Length EFL @ 2.94μm (mm) 24.34
Effective Focal Length EFL @ 1.064μm (mm) 23.80
Effective Focal Length EFL @ 0.6328μm (mm) 23.58
Effective Focal Length EFL @ 0.2μm (mm) 18.55
Back Focal Length BFL (mm) @ DWL 20.61
Center Thickness CT (mm) 12.20
Edge Thickness ET (mm) 2.00
Radius R1=-R2 (mm) 18.37
Surface Accuracy (λ) 1 (Specified @ 0.63μm)
Surface Quality 60-40
Coating Uncoated
RoHS Exempt
CaF2 Double-Convex Lens, 25.4mm Diameter x 50.8mm FL
NT47-057 $235.00 Click to receive an email with delivery information. Click to add this item to your cart.
Substrate CaF2
Diameter (mm) 25.40
Effective Focal Length EFL @ 5.0μm (mm) 50.80
Effective Focal Length EFL @ 2.94μm (mm) 48.47
Effective Focal Length EFL @ 1.064μm (mm) 47.33
Effective Focal Length EFL @ 0.6328μm (mm) 46.86
Effective Focal Length EFL @ 0.2μm (mm) 40.00
Back Focal Length BFL (mm) @ DWL 48.51
Center Thickness CT (mm) 6.20
Edge Thickness ET (mm) 2.00
Radius R1=-R2 (mm) 39.61
Surface Accuracy (λ) 1 (Specified @ 0.63μm)
Surface Quality 60-40
Coating Uncoated
RoHS Exempt
CaF2 Double-Convex Lens, 25.4mm Diameter x 63.5mm FL
NT48-018 $235.00 Click to receive an email with delivery information. Click to add this item to your cart.
Substrate CaF2
Diameter (mm) 25.40
Effective Focal Length EFL @ 5.0μm (mm) 63.50
Effective Focal Length EFL @ 2.94μm (mm) 60.59
Effective Focal Length EFL @ 1.064μm (mm) 59.16
Effective Focal Length EFL @ 0.6328μm (mm) 58.57
Effective Focal Length EFL @ 0.2μm (mm) 50.38
Back Focal Length BFL (mm) @ DWL 61.56
Center Thickness CT (mm) 5.30
Edge Thickness ET (mm) 2.00
Radius R1=-R2 (mm) 49.89
Surface Accuracy (λ) 1 (Specified @ 0.63μm)
Surface Quality 60-40
Coating Uncoated
RoHS Compliant
CaF2 Double-Convex Lens, 25.4mm Diameter x 76.2mm FL
NT47-058 $235.00 Click to receive an email with delivery information. Click to add this item to your cart.
Substrate CaF2
Diameter (mm) 25.40
Effective Focal Length EFL @ 5.0μm (mm) 76.20
Effective Focal Length EFL @ 2.94μm (mm) 72.71
Effective Focal Length EFL @ 1.064μm (mm) 70.99
Effective Focal Length EFL @ 0.6328μm (mm) 70.27
Effective Focal Length EFL @ 0.2μm (mm) 60.72
Back Focal Length BFL (mm) @ DWL 74.50
Center Thickness CT (mm) 4.70
Edge Thickness ET (mm) 2.00
Radius R1=-R2 (mm) 60.12
Surface Accuracy (λ) 1 (Specified @ 0.63μm)
Surface Quality 60-40
Coating Uncoated
RoHS Exempt
CaF2 Double-Convex Lens, 25.4mm Diameter x 100mm FL
NT47-059 $235.00 In stock and ready to ship. Click to add this item to your cart.
Substrate CaF2
Diameter (mm) 25.40
Effective Focal Length EFL @ 5.0μm (mm) 100.00
Effective Focal Length EFL @ 2.94μm (mm) 95.25
Effective Focal Length EFL @ 1.064μm (mm) 92.99
Effective Focal Length EFL @ 0.6328μm (mm) 92.05
Effective Focal Length EFL @ 0.2μm (mm) 79.85
Back Focal Length BFL (mm) @ DWL 98.36
Center Thickness CT (mm) 4.10
Edge Thickness ET (mm) 2.00
Radius R1=-R2 (mm) 79.07
Surface Accuracy (λ) 1 (Specified @ 0.63μm)
Surface Quality 60-40
Coating Uncoated
RoHS Exempt
CaF2 Double-Convex Lens, 25.4mm Diameter x 150mm FL
NT48-019 $235.00 Click to receive an email with delivery information. Click to add this item to your cart.
Substrate CaF2
Diameter (mm) 25.40
Effective Focal Length EFL @ 5.0μm (mm) 150.00
Effective Focal Length EFL @ 2.94μm (mm) 143.00
Effective Focal Length EFL @ 1.064μm (mm) 139.60
Effective Focal Length EFL @ 0.6328μm (mm) 138.18
Effective Focal Length EFL @ 0.2μm (mm) 120.30
Back Focal Length BFL (mm) @ DWL 148.68
Center Thickness CT (mm) 3.40
Edge Thickness ET (mm) 2.00
Radius R1=-R2 (mm) 119.12
Surface Accuracy (λ) 1 (Specified @ 0.63μm)
Surface Quality 60-40
Coating Uncoated
RoHS Compliant
 Sort by Spec
 
Clear Aperture 90% of Diameter
Diameter Tolerance +0.00/-0.13mm
Center Thickness Tolerance ±0.25mm
Bevel 0.90mm (Max Face Width) x 45°
Focal Length Tolerance ±2% at DWL
Surface Accuracy 1 λ at 0.63µm
Surface Quality 60-40
Design Wavelength (DWL) 5µm
Coating None

View Calcium Fluoride Transmission Curve

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