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

12.5mm Dia x 37.5mm FL Uncoated, Ge Aspheric Lens

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Stock #22-770 New In Stock
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$400.00
Qty 1-5
$400.00
Qty 6+
$320.00
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Diameter (mm):
12.50 +0.00/-0.10
Effective Focal Length EFL (mm):
37.50 @ 8000nm
Numerical Aperture NA:
0.16
Back Focal Length BFL (mm):
36.75
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Germanium (Ge)
Asphere Figure Error, RMS @ 632.8nm:
λ/6
Coating:
Uncoated
Centering (arcmin):
≤5
Surface Quality:
60-40
Clear Aperture CA (mm):
11.25
Edge Thickness ET (mm):
2.83
Center Thickness CT (mm):
3.00 ±0.10
f/#:
3.00
Bevel:
Protective bevel as needed
Edges:
Diamond Turned
Radius R2 (mm):
Infinite
Shape of Back Surface:
Plano
Wavelength Range (nm):
2000 - 14000
Conjugate Distance:
Infinite

Regulatory Compliance

RoHS:
Certificate of Conformance:

Product Family Description

  • Diffraction Limited Performance
  • Variety of Coating Options
  • Full Prescription Data Available

Our TECHSPEC® Germanium Infrared (IR) Aspheric Lenses provide diffraction limited focusing performance over a broad spectral range in the Mid- and Long Wave infrared regions. Ideal for monochromatic light sources, such as quantum cascade lasers, these lenses offer a high performance alternative to standard plano-convex lenses.

Each aspheric lens is available uncoated, or with BBAR coating options. Uncoated germanium has transmission of <50%, so custom anti-reflection (AR) coatings should be considered if specifying an uncoated lens. Each BBAR coated lens offers >95% transmission, making it ideal for integration into a variety of OEM applications. For custom design or coating options, please contact our Sales Department.