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

9.0mm Dia. x 20mm FL, VIS-EXT Coated, Plano-Convex Lens

Stock #38-441 3-4 days
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Diameter (mm):
9.00 +0.0/-0.025
Effective Focal Length EFL (mm):
20.00 @ 587.6nm
Back Focal Length BFL (mm):
VIS-EXT (350-700nm)
Coating Specification:
Ravg <0.5% @ 350 - 700nm
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
Power (P-V) @ 632.8nm:
Irregularity (P-V) @ 632.8nm:
Focal Length Tolerance (%):
Centering (arcmin):
Center Thickness CT (mm):
2.20 ±0.05
Edge Thickness ET (mm):
Radius R1 (mm):
Clear Aperture CA (mm):
Numerical Aperture NA:
Plano-Convex Lens
Protective bevel as needed
Wavelength Range (nm):
350 - 700
Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
5 J/cm2 @ 532nm, 10ns

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 235:

Product Family Description

  • New Lower Price!
  • Visible Broadband Anti-Reflection Coating with Extended UV Performance
  • AR Coated to Provide <0.5% Reflectance per Surface for 350 - 700nm
  • Designed for 0° Angle of Incidence
  • Various Coating Options: Uncoated, MgF2, VIS 0°, VIS-NIR, NIR I, NIR II, and YAG-BBAR

TECHSPEC® VIS-EXT Coated Plano-Convex (PCX) Lenses have a positive focal length, making them ideal for collecting and focusing light in imaging applications. They are also useful in a variety of applications involving emitters, detectors, lasers, and fiber optics. TECHSPEC® VIS-EXT Coated Plano-Convex (PCX) Lenses are available in a wide variety of diameters and focal lengths. Identical designs of these lenses are also offered uncoated  or with broadband anti-reflective (BBAR) coatings, which include MgF2, VIS 0°, VIS-NIR, NIR I, NIR II, and YAG-BBAR.