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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 Diameter x 40mm FL, NIR Coated, K22R Plastic Aspheric Lens

TECHSPEC® Plastic Aspheric Lenses

Stock #21-220 3-4 days
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Diameter (mm):
25.00 ± 0.15
Effective Focal Length EFL (mm):
40.00 @ 587.6nm
Numerical Aperture NA:
Back Focal Length BFL (mm):
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Zeonex K22R
Aspheric Design Wavelength (nm):
BBAR (600-1000nm)
Coating Specification:
Ravg <0.7% @ 600 - 1000nm
Centering (arcmin):
≤5 (by design)
Surface Quality:
Clear Aperture CA (mm):
Edge Thickness ET (mm):
Center Thickness CT (mm):
4.80 ± 0.20
Protective bevel as needed
Operating Temperature (°C):
-30 to 70
Radius R2 (mm):
Shape of Back Surface:
Aspheric Lens
Wavelength Range (nm):
600 - 1000
Conjugate Distance:

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 233:

Product Family Description

  • Full Prescription Data Available
  • Standard 25mm Diameter for Easy System Integration
  • High Numerical Aperture Designs for Superior Light Collection

TECHSPEC® Plastic Aspheric Lenses offer a lightweight alternative to glass spherical or aspherical lenses. Designed with a standard 25mm diameter, these lenses can be easily integrated into most systems and applications using standard mounting hardware. The plastic substrate provides exceptional value while still maintaining excellent performance and a high numerical aperture. TECHSPEC® Plastic Aspheric Lenses feature low haze, low autofluorescence, and excellent coating adhesion, making these lenses ideal for OEM and research applications alike. For alternate designs or custom coating requirements, please contact our Sales Department.