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Products / Optics / Optical Lenses / Aspheric Lenses / CNC Polished / λ/40 Aspheric Lenses
See all 7 Products in Family
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

25mm Dia x 50mm FL, Uncoated, λ/40 Aspheric Lens

TECHSPEC® λ/40 Aspheric Lenses

TECHSPEC® λ/40 Aspheric Lenses

Stock #12-439
£505.75
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Qty 1-10
£505.75
Qty 11+
£404.60
Volume Pricing
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Diameter (mm):
25.00 +0.00/-0.025
Effective Focal Length EFL (mm):
50.00 @ 587.6nm
Numerical Aperture NA:
0.25
Back Focal Length BFL (mm):
45.23
Center Thickness CT (mm):
7.24
Coating:
Uncoated
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-BK7
Clear Aperture CA (mm):
22.50
Asphere Figure Error (μm RMS):
0.016
Surface Quality:
40-20
Edge Thickness ET (mm):
4.14
Centering (arcmin):
<1
Bevel:
Protective bevel as needed
f/#:
2
Shape of Back Surface:
Plano
Wavelength Range (nm):
350 - 2200
Conjugate Distance:
Infinite

Regulatory Compliance

RoHS:
Compliant
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Product Family Description

  • λ/40 RMS Asphere Figure Error

TECHSPEC® λ/40 Aspheric Lenses guarantee better than λ/40 wave aspheric figure error. Achieved via precision magneto-rheological finishing (MRF), these aspheres offer high numerical apertures with diameters ranging from 15 to 50mm and are ideal for a variety of imaging and low light level applications. Each TECHSPEC λ/40 Aspheric Lens is individually measured and a 3D surface profile is included. For diffraction-limited aspheres designed at specific Nd:YAG laser wavelengths, see our TECHSPEC λ/40 Laser Grade Aspheric Lenses.

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