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12.7mm Dia. x 76.2mm FL, 3-5µm BBAR Coated, ISP Optics Silicon (Si) PCX Lens | HDAR35-SI-PX-12-76

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Stock #24-889 3-4 days
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Diameter (mm):
12.70 +0.00/-0.13
Effective Focal Length EFL (mm):
76.20 @ 4µm
BBAR (3000-5000nm)
Coating Specification:
Ravg <0.5% @ 3 - 5µm Rabs <1.5% @ 3 - 5µm
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
Irregularity (P-V) @ 632.8nm:
Focal Length Tolerance (%):
Centering (arcmin):
Center Thickness CT (mm):
2.10 ±0.20
Edge Thickness ET (mm):
Radius R1 (mm):
Clear Aperture CA (mm):
Numerical Aperture NA:
Plano-Convex Lens
Protective bevel as needed
Wavelength Range (nm):
3000 - 5000
Model Number:

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:

Product Family Description

  • High-Durability Anti-Reflection (HDAR) Coated for 3 - 5μm
  • Ideal for Weight Sensitive Applications
  • Available Focal Lengths from 25.4 – 500mm

ISP Optics Silicon (Si) Plano-Convex (PCX) Lenses feature a High Durability Anti-Reflection (HDAR) coating for increased transmission in the 3 - 5μm range. Silicon features a Knoop Hardness of 1150 making it harder and less brittle than Germanium. In addition, the HDAR coating increases the durability of the substrate, enabling use in harsh environments. ISP Optics Silicon (Si) Plano-Convex (PCX) Lenses also feature a low density of 2.329g/cm3, making them ideal for weight-sensitive IR applications such as Near-Infrared (NIR) imaging and infrared spectroscopy.