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

20mm Dia., 0.67 Numerical Aperture, Uncoated, High Precision Aspheric Lens

TECHSPEC® High Precision Aspheric Lenses

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Stock #37-424 Other Coating Options
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$280.00
Qty 1-5
$280.00
Qty 6+
$238.00
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Diameter (mm):
20.00 +0.00/-0.025
Effective Focal Length EFL (mm):
15.00 @ 587.6nm
Numerical Aperture NA:
0.67
Back Focal Length BFL (mm):
8.12
Center Thickness CT (mm):
12.42 ±0.10
Coating:
Uncoated
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Clear Aperture CA (mm):
18.00
Surface Quality:
40-20
Edge Thickness ET (mm):
7.97
Centering (arcmin):
<1
Bevel:
Protective bevel as needed
f/#:
0.75
Shape of Back Surface:
Plano
Wavelength Range (nm):
390 - 2500
Conjugate Distance:
Infinite
Focal Length Specification Wavelength (nm):
587.6
Asphere Figure Error, RMS @ 632.8nm:
0.4λ

Regulatory Compliance

RoHS:
Certificate of Conformance:

Product Family Description

  • Higher Precision Versions of Our Precision Aspheric Lenses
  • 0.25μm RMS Aspheric Figure Error
  • High Numerical Apertures to Maximize Throughput

TECHSPEC® High Precision Aspheric Lenses are CNC polished aspheric lenses that feature a 0.25µm RMS aspheric figure error. The precision aspheric figure error makes these lenses ideal for applications that require spherical aberration correction, including imaging and laser focusing applications. These aspheric lenses can also be used to replace multiple spherical elements in optical assemblies to reduce weight and cost. TECHSPEC High Precision Aspheric Lenses are available with diameters from 10 to 50mm and high numerical apertures to maximize light throughput.

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