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25.4mm Dia. x 500mm FL, 8-12µm AR Coated, ISP Optics Zinc Selenide (ZnSe) PCX Lens | AR812-ZC-PX-25-500

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Zinc Selenide Plano-Convex (PCX) Lenses

Zinc Selenide Plano-Convex (PCX) Lenses
Stock #24-992 3-4 days
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Diameter (mm):
25.40 +0.00/-0.13
Effective Focal Length EFL (mm):
500.00 @ 10.6µm
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Zinc Selenide (ZnSe), CVD Grade
Numerical Aperture NA:
BBAR (8000-12000nm)
Plano-Convex Lens
Wavelength Range (nm):
8000 - 12000
Back Focal Length BFL (mm):
Protective bevel as needed
Center Thickness CT (mm):
2.10 ±0.20
Centering (arcmin):
Clear Aperture CA (mm):
Coating Specification:
Ravg <0.5% @ 8 - 12µm
Rabs <1% @ 8 - 12µm
Edge Thickness ET (mm):
Focal Length Tolerance (%):
Model Number:
Radius R1 (mm):
Surface Quality:
Irregularity (P-V) @ 10.6μm:

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:

Product Family Description

  • Low Dispersion and Absorption from 0.6 – 18µm
  • High Resistance to Thermal Shock
  • Uncoated or BBAR Coated for 8 – 12µm

ISP Optics Zinc Selenide (ZnSe) Plano-Convex (PCX) Lenses are ideal for focusing or collimation of light in the Mid-Wave Infrared (MWIR) and Long-Wave Infrared (LWIR) spectrum. Featuring low absorption and high resistance to thermal shock, ZnSe is widely used in high power CO2 laser systems. ZnSe is not recommended for harsh environments as it is a relatively soft material that scratches easily, and only has a Knoop Hardness of 120. ISP Optics Zinc Selenide (ZnSe) Plano-Convex (PCX) Lenses are available either uncoated or Broadband Anti-Reflection (BBAR) coated for increased transmission from 8-12µm.

Note: Special care should be taken when handling Zinc Selenide as it is a toxic material. Always wear rubber or plastic gloves to avoid risk of contamination.