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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More
25mm Diameter x 50mm EFL Aspherized Achromatic Lens

Aspherized Achromatic Lenses

Aspherized Achromatic Lenses

Stock #49-665
A$212.80
Qty 1-5
A$212.80
Qty 6
A$170.24
Volume Pricing
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Diameter (mm):
25.00 +0.00/-0.05
Effective Focal Length EFL (mm):
50.00
Back Focal Length BFL (mm):
44.08
Focal Length Specification Wavelength (nm):
587.6
Clear Aperture (%):
90.00
Centering (arcmin):
≤5
Center Thickness CT (mm):
11.50
Center Thickness CT 1 (mm):
9.00
Center Thickness CT 2 (mm):
2.50
Center Thickness Tolerance (mm):
±0.2
Radius R1 (mm):
28.50
Radius R2 (mm):
31.00
Radius R3 (mm):
63.00
Edge Thickness ET (mm):
7.52
Substrate:
Surface Quality:
60-40, glass surfaces only
f/#:
2.00
Numerical Aperture NA:
0.25
Coating:
VIS 0° (425-675nm)
Coating Specification:
Ravg ≤0.4% @ 425 - 675nm
Note:
VIS 0° Coating on First Surface, Second Surface is Aspheric Polymer
Operating Temperature (°C):
-20°C to 80°C
Type:
Achromatic Lens
Wavelength Range (nm):
425 - 675
Asphere Figure Error (μm RMS):
Chromatically Corrected Performance

Regulatory Compliance

RoHS 2015:
REACH 201:

Product Family Description

  • Low Cost, Color-Corrected Asphere
  • Better Color Correction than Standard Achromatic Lenses
  • Similar Spherical Aberration Correction to Machined Aspheres
  • Prescription Information Available

TECHSPEC®­ Aspherized Achromats bridge the gap between color-corrected achromats and spherical aberration corrected aspheres, resulting in cost effective, color corrected aspheric components. The TECHSPEC­® doublet lenses consist of two cemented elements that are matched for their color-correction ability and small RMS spot size.

The second surface of the doublet is fused with a molded polymer aspheric surface. These molds create a stable aspheric contour, removing or reducing wavefront errors present in typical achromats while boosting numerical aperture. Typical applications include: fiber optic focusing or collimation, image relay, inspection, scanning and high numerical aperture imaging.

These lenses won the 2008 Prism Award for Optics and Optical Components.

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