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All Products / Optics / Optical Lenses / Aspheric Lenses / Glass Polished / Low Scatter Aspheric Lenses
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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., 0.67 Numerical Aperture, Uncoated, Low Scatter Asphere

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Stock #20-080 3-4 days
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€262,50 €525,00
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€262,50 €525,00
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Diameter (mm):
25.00 +0.0/-0.025
Effective Focal Length EFL (mm):
50.00 @ 587.6nm
Numerical Aperture NA:
0.25
Back Focal Length BFL (mm):
46.04 @ 587.6nm
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-BK7
Coating:
Uncoated
Centering (arcmin):
<3
Surface Quality:
10-5
Clear Aperture CA (mm):
22.50
Edge Thickness ET (mm):
2.90
Center Thickness CT (mm):
6.00 ±0.10
f/#:
2.00
Bevel:
0.75 x 45°
Shape of Back Surface:
Plano
Wavelength Range (nm):
390 - 2500
Conjugate Distance:
Infinite
Surface Roughness (Å):
P4 (<3 defects, ~10Å roughness)
Slope Error Aspheric Side:
0.35μm/mm per 1mm Window
Asphere Figure Error, @ 632.8nm:
λ/4 RMS and 1.25λ PV
Power (diopters):
20.00

Regulatory Compliance

RoHS:
Compliant
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Certificate of Conformance:
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Product Family Description

  • P4 Surface Roughness for Low Scatter
  • 10-5 Laser Grade Surface Quality
  • Precision RMS Aspheric Figure Error

TECHSPEC® Low Scatter Aspheric Lenses are high quality CNC polished aspheres featuring ISO 10110-8 P4 surface roughness and 10-5 surface quality. P4 surface roughness is specified as less than 3 microdefects per 10mm of sampling length and is the smoothest surface outlined in ISO 10110-8 standard. A low surface roughness and 10-5 surface quality leads to very low scattering when focusing or collimating laser light. High laser damage threshold coatings are available upon request. TECHSPEC® Low Scatter Aspheric Lenses are ideal for high power laser applications where low scattering is paramount, such as in the metrology and aerospace industries.