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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

25mm Dia. x 50mm FL VIS-NIR Coated Calcium Fluoride PCX Lens

TECHSPEC Calcium Fluoride Plano-Convex (PCX) Lenses

Stock #22-519 3-4 days
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Diameter (mm):
25.00 +0.00/-0.10
Effective Focal Length EFL (mm):
50.00 @ 266nm
Back Focal Length BFL (mm):
VIS-NIR (400-1000nm)
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Calcium Fluoride (CaF2)
Surface Quality:
Power (P-V) @ 632.8nm:
Irregularity (P-V) @ 632.8nm:
Centering (arcmin):
Center Thickness CT (mm):
5.00 ±0.1
Edge Thickness ET (mm):
Radius R1 (mm):
Clear Aperture CA (mm):
Numerical Aperture NA:
Plano-Convex Lens
Protective bevel as needed
Wavelength Range (nm):
200 - 7000
Axis Orientation:

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 235:

Product Family Description

  • Low Index of Refraction
  • Vacuum Grade UV Substrate
  • Uncoated, VIS-NIR, and NIR II Broadband AR Coating Options

TECHSPEC® Calcium Fluoride Plano-Convex Lenses are ideal for demanding applications that require superior performance from the ultraviolet through the mid-wave infrared spectra. The lenses’ low refractive index, high laser damage threshold, and low axial and radial-stress birefringence are highly suitable for use with Excimer lasers or for integration into infrared systems. Additionally, calcium fluoride features low solubility and offers superior hardness to comparable fluoride-based substrates, making these PCX lenses capable of withstanding harsh environments and exposure to the elements. TECHSPEC® Calcium Fluoride Plano-Convex Lenses are offered in 12.5mm, 25mm, and 50mm diameters. The lenses are available uncoated, VIS-NIR, or with NIR II broadband AR coating options.