eo_logo
 
All Products / Clearance Products / Clearance Optics / Germanium Meniscus Lenses
See all 1 Products in Family

25.4mm Dia x 101mm FL, Germanium Meniscus Lens

×
Stock #63-295 Clearance 3-5 days
×
- +
A$176.00
Qty 1+
A$176.00
Volume Pricing
Request Quote
Get Product Downloads
Diameter (mm):
25.40 +0.00/-0.13
Effective Focal Length EFL (mm):
101.00
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Germanium (Ge)
f/#:
3.98
Numerical Aperture NA:
0.13
Coating:
Uncoated
Type:
Meniscus Lens
Wavelength Range (nm):
2000 - 14000
Center Thickness CT (mm):
3.00
Center Thickness Tolerance (mm):
±0.2
Centering (arcmin):
<3
Clear Aperture (%):
90.00
Edge Thickness ET (mm):
2.70
Effective Focal Length EFL @ 10.6μm (mm):
100.00
Effective Focal Length EFL @ 12μm (mm):
99.60
Effective Focal Length EFL @ 2.94μm (mm):
98.20
Effective Focal Length EFL @ 5.0μm (mm):
99.20
Focal Length Specification Wavelength (μm):
10.6
Focal Length Tolerance (%):
±2 @ DWL
Radius R1 (mm):
161.06
Radius R2 (mm):
106.15
Surface Accuracy:
λ/20
Surface Quality:
60-40
Wavelength Range (μm):
2 - 14

Regulatory Compliance

RoHS:
Compliant
×
Certificate of Conformance:
View
×

Product Family Description

  • High Index of Refraction
  • Minimal Chromatic Aberration Due to Low Dispersion
  • Available in Plano-Convex (PCX) or Meniscus Designs

Germanium (Ge) Lenses are ideal for use in Mid-Wave Infrared (MWIR) and Long-Wave Infrared (LWIR) applications, including thermal imaging, spectroscopy, or FLIR. Additionally, Germanium’s Knoop Hardness of 780 is well suited for rugged environments. Due to thermal runaway, or the decrease in transmission as temperature increases, Germanium (Ge) Lenses should be used at temperatures below 100°C. Germanium’s high density (5.33 g/cm3) should be considered when designing for weight-sensitive systems.

Meniscus lenses are convex-concave lenses. They have one outward curved face and one inward-curved face. If the outward curve is sharper than the inward curve, the lens has a positive focal length and acts as a magnifier.