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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 Dia., 0.50 NA, V-Coated 1550nm NIR Aspheric Lens

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Stock #22-939 3-4 days
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£323.00
Qty 1-5
£323.00
Qty 6+
£258.40
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Diameter (mm):
25.00 +0.0/-0.025
Effective Focal Length EFL (mm):
25.00 @ 1550nm
Numerical Aperture NA:
0.5
Back Focal Length BFL (mm):
18.97 @ 587.6nm
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-SF6
Aspheric Design Wavelength (nm):
1550
Coating:
1550nm V-Coat
Coating Specification:
Rabs < 0.25% @ 1550nm @ 0° AOI
Centering (arcmin):
<2.5
Surface Quality:
40-20
Clear Aperture CA (mm):
22.5
Edge Thickness ET (mm):
4.25
Center Thickness CT (mm):
8.50 ±0.1
f/#:
1
Bevel:
Protective bevel as needed
Shape of Back Surface:
Plano
Type:
Aspheric Lens
Conjugate Distance:
Infinite
Durability:
ADHESION AND ABRASION AS PER MIL-PRF13830B APP C, PARA C.3.8.4 AND C.3.8.5
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 @ 1550nm, 10ns
Asphere Figure Error, @ 632.8nm:
0.4λ RMS and 2λ PV
Power (diopters):
40.00

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 235:

Product Family Description

  • Designed at 1550nm
  • Precision Grade Aspheric Surface
  • Uncoated and <0.25% Reflectance V-Coat Options

TECHSPEC® 1550nm Precision Near-Infrared (NIR) Aspheric Lenses are designed at 1550nm to eliminate spherical aberration in the near-infrared. 1550nm lasers are commonly used in telecom, LiDAR, and other applications requiring eye-safe design features. Manufactured from S-TIH6 or N-SF6 substrates and polished through a computer numerical controlled (CNC) process, these aspheric lenses achieve high precision performance across the NIR spectrum. Featuring a 0.4λ RMS aspheric figure error, these lenses are ideal for applications that require spherical aberration correction, including imaging and laser focusing applications. TECHSPEC® 1550nm Precision Near-Infrared (NIR) Aspheric Lenses are available with low numerical aperture designs for applications that require beam shape to be maintained as well as high numerical aperture designs for light-gathering applications. For custom designed CNC polished aspheric lenses, please contact us.