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

25mm Dia. x 20mm EFL Precision Aspherized Achromatic Lens

Stock #85-301
A$1,592.00
Qty 1-5
A$1,592.00
Qty 6+
A$1,432.80
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Diameter (mm):
25.00 +0.0/-0.1
Effective Focal Length EFL (mm):
20.00
Back Focal Length BFL (mm):
8.56
Focal Length Specification Wavelength (nm):
587.6
Clear Aperture CA (mm):
22.5
Centering (arcmin):
≤3
Center Thickness CT (mm):
23.20
Center Thickness CT 1 (mm):
15.00
Center Thickness CT 2 (mm):
8.2
Center Thickness Tolerance (mm):
±0.2
Edge Thickness ET (mm):
11.75
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
20-10
f/#:
0.8
Numerical Aperture NA:
0.63
Coating:
MgF2 (400-700nm)
Coating Specification:
Ravg ≤1.75% @ 400 - 700nm
Type:
Achromatic Lens
Wavelength Range (nm):
450 - 700
Asphere Figure Error (μm RMS):
0.5

Regulatory Compliance

RoHS:

Product Family Description

  • All Glass Color-Corrected Asphere

Featuring an all glass design, TECHSPEC® Precision Aspherized Achromatic Lenses are truly achromatic, with less than 10μm of lateral chromatic aberration. These achromatic lenses are diffraction limited over the full visible spectrum, and have high numerical apertures for increased light throughput and small spot sizes. TECHSPEC® Precision Aspherized Achromatic Lenses are ideal for fluorescence microscopy, low signal-to-noise imaging applications, and multiple laser biotech applications.

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