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

25mm Dia. x 75mm FL, 266nm Laser V-Coat, λ/20 PCX Lens

TECHSPEC λ/20 Plano-Convex (PCX) Lenses

TECHSPEC λ/20 Plano-Convex (PCX) Lenses

TECHSPEC λ/20 Plano-Convex (PCX) Lenses Any of our lenses with a diameter of 5mm or greater can be specified with blackened edges. To specify the blackening, simply append a –INK to the BBAR coated stock number.
Stock #38-762 Clearance 3-4 days
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Diameter (mm):
25.00 +0.0/-0.1
Effective Focal Length EFL (mm):
75.00 @ 587.6nm
Back Focal Length BFL (mm):
Laser V-Coat (266nm)
Coating Specification:
Rabs <0.25% @ 266nm
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Fused Silica (Corning 7980)
Surface Quality:
Power (P-V) @ 632.8nm:
Irregularity (P-V) @ 632.8nm:
Focal Length Tolerance (%):
Centering (arcmin):
Center Thickness CT (mm):
4.43 ±0.10
Edge Thickness ET (mm):
Radius R1 (mm):
Clear Aperture CA (mm):
Numerical Aperture NA:
Design Wavelength DWL (nm):
Plano-Convex Lens
Protective bevel as needed
Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
3 J/cm2 @ 266nm, 20ns, 20Hz

Regulatory Compliance

RoHS 2015:
Reach 209:
Certificate of Conformance:

Product Family Description

  • λ/20 Surface Accuracy
  • Available Uncoated or with a Variety of Nd:YAG Laser Coating Options
  • Includes Full Data Package with Interferogram and Measured Results for Geometric Tolerances

TECHSPEC® λ/20 Plano-Convex (PCX) Lenses are ideal for applications requiring minimal wavefront distortion. TECHSPEC λ/20 Plano-Convex (PCX) Lenses feature the characteristics required for high precision use, including a precision fused silica substrate, λ/20 surface accuracy, and 20-10 surface quality. Each lens is available with a full data package that includes interferogram and measured results for diameter, radius, center thickness, and centration.

Laser Optics