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All Products / Optics / Optical Lenses / Aspheric Lenses / Glass Polished / High Precision 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 x 50mm FL, VIS EXT+, High Precision Aspheric Lens

TECHSPEC® High Precision Aspheric Lenses

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Stock #22-893 3-5 days
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A$1,168.00
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A$934.40
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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
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-BK7
Aspheric Design Wavelength (nm):
587.6
Asphere Figure Error, RMS @ 632.8nm:
λ/40
Coating:
VIS-EXT+ (350-700nm)
Coating Specification:
Ravg <0.5% @ 350 - 700nm @ ±30° AOI
Rabs <1.5% @ 350 - 700nm @ ±30° AOI
Centering (arcmin):
<3
Surface Quality:
40-20
Clear Aperture CA (mm):
22.50
Edge Thickness ET (mm):
4.14
Center Thickness CT (mm):
7.24
f/#:
2
Bevel:
Protective bevel as needed
Shape of Back Surface:
Plano
Type:
Aspheric Lens
Wavelength Range (nm):
350 - 700
Conjugate Distance:
Infinite
Note:
3D Surface Profile not included with coated lenses
Power (diopters):
20.00

Regulatory Compliance

RoHS 2015:
Compliant
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Certificate of Conformance:
View
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Reach 233:
Compliant
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Product Family Description

  • High Precision Aspheric Surface
  • 3D Surface Profiles Included with Uncoated Lenses
  • Uncoated and <0.25% Reflectance V-Coat Available

TECHSPEC® High Precision 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 High Precision Aspheric Lens is individually measured. 3D surface profiles are included with uncoated lenses. For diffraction-limited aspheres designed at specific Nd:YAG laser wavelengths, see our TECHSPEC High Precision Laser Grade Aspheric Lenses.