Calcium Fluoride Double-Convex (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 $369.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Diameter (mm) 25.40
Diameter Tolerance (mm) +0.00/-0.13
Clear Aperture (%) 90
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
Focal Length Tolerance (%) ±2 at DWL
Edge Thickness ET (mm) 2.00
Center Thickness CT (mm) 12.20
Center Thickness Tolerance (mm) ±0.2
Radius R1=-R2 (mm) 18.37
Surface Quality 60-40
Surface Accuracy (λ) 1 @ 0.63μm
Bevel 0.90mm (Max Face Width) x 45°
Design Wavelength DWL (µm) 5
Coating Uncoated
Substrate CaF2
RoHS Exempt
CaF2 Double-Convex Lens, 25.4mm Diameter x 50.8mm FL
NT47-057 $235.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Diameter (mm) 25.40
Diameter Tolerance (mm) +0.00/-0.13
Clear Aperture (%) 90
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
Focal Length Tolerance (%) ±2 at DWL
Edge Thickness ET (mm) 2.00
Center Thickness CT (mm) 6.20
Center Thickness Tolerance (mm) ±0.2
Radius R1=-R2 (mm) 39.61
Surface Quality 60-40
Surface Accuracy (λ) 1 @ 0.63μm
Bevel 0.90mm (Max Face Width) x 45°
Design Wavelength DWL (µm) 5
Coating Uncoated
Substrate CaF2
RoHS Exempt
CaF2 Double-Convex Lens, 25.4mm Diameter x 63.5mm FL
NT48-018 $235.00Click for special volume pricing Click to receive an email with delivery information. Click to add this item to your cart.
Diameter (mm) 25.40
Diameter Tolerance (mm) +0.00/-0.13
Clear Aperture (%) 90
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
Focal Length Tolerance (%) ±2 at DWL
Edge Thickness ET (mm) 2.00
Center Thickness CT (mm) 5.30
Center Thickness Tolerance (mm) ±0.2
Radius R1=-R2 (mm) 49.89
Surface Quality 60-40
Surface Accuracy (λ) 1 @ 0.63μm
Bevel 0.90mm (Max Face Width) x 45°
Design Wavelength DWL (µm) 5
Coating Uncoated
Substrate CaF2
RoHS Compliant
CaF2 Double-Convex Lens, 25.4mm Diameter x 76.2mm FL
NT47-058 $235.00Click for special volume pricing Click to receive an email with delivery information. Click to add this item to your cart.
Diameter (mm) 25.40
Diameter Tolerance (mm) +0.00/-0.13
Clear Aperture (%) 90
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
Focal Length Tolerance (%) ±2 at DWL
Edge Thickness ET (mm) 2.00
Center Thickness CT (mm) 4.70
Center Thickness Tolerance (mm) ±0.2
Radius R1=-R2 (mm) 60.12
Surface Quality 60-40
Surface Accuracy (λ) 1 @ 0.63μm
Bevel 0.90mm (Max Face Width) x 45°
Design Wavelength DWL (µm) 5
Coating Uncoated
Substrate CaF2
RoHS Exempt
CaF2 Double-Convex Lens, 25.4mm Diameter x 100mm FL
NT47-059 $235.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Diameter (mm) 25.40
Diameter Tolerance (mm) +0.00/-0.13
Clear Aperture (%) 90
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
Focal Length Tolerance (%) ±2 at DWL
Edge Thickness ET (mm) 2.00
Center Thickness CT (mm) 4.10
Center Thickness Tolerance (mm) ±0.2
Radius R1=-R2 (mm) 79.07
Surface Quality 60-40
Surface Accuracy (λ) 1 @ 0.63μm
Bevel 0.90mm (Max Face Width) x 45°
Design Wavelength DWL (µm) 5
Coating Uncoated
Substrate CaF2
RoHS Exempt
CaF2 Double-Convex Lens, 25.4mm Diameter x 150mm FL
NT48-019 $235.00Click for special volume pricing Click to receive an email with delivery information. Click to add this item to your cart.
Diameter (mm) 25.40
Diameter Tolerance (mm) +0.00/-0.13
Clear Aperture (%) 90
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
Focal Length Tolerance (%) ±2 at DWL
Edge Thickness ET (mm) 2.00
Center Thickness CT (mm) 3.40
Center Thickness Tolerance (mm) ±0.2
Radius R1=-R2 (mm) 119.12
Surface Quality 60-40
Surface Accuracy (λ) 1 @ 0.63μm
Bevel 0.90mm (Max Face Width) x 45°
Design Wavelength DWL (µm) 5
Coating Uncoated
Substrate CaF2
RoHS Compliant
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