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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 35mm FL, 3-5μm Coated Germanium Meniscus Lens

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Stock #87-963 Contact Us
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₹67,860
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₹67,860
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Specifications

General

Type:
Meniscus Lens

Physical & Mechanical Properties

Diameter (mm):
25.00 +0.0/-0.1
Center Thickness CT (mm):
2.50
Center Thickness Tolerance (mm):
±0.10
Centering (arcmin):
<3
Clear Aperture (%):
90.00
Edge Thickness ET (mm):
1.6

Optical Properties

Effective Focal Length EFL (mm):
35.00
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Germanium (Ge)
f/#:
1.4
Numerical Aperture NA:
0.36
Coating:
BBAR (3000-5000nm)
Wavelength Range (nm):
3000 - 5000
Back Focal Length BFL (mm):
33.29
Coating Specification:
Ravg <3.0% @ 3 - 5μm
Focal Length Specification Wavelength (μm):
10.6
Radius R1 (mm):
38.43
Radius R2 (mm):
57.61
Surface Quality:
60-40
Wavelength Range (μm):
3 - 5

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
REACH 241:

Product Details

  • Wavelength Range of 2 - 16μm
  • Durable Design for Demanding Applications
  • Superior Spherical Correction
  • Due to material supply chain disruptions with germanium, there may be increased lead times and price changes on our germanium products. For more information, please contact our customer service team.
  • Edmund Optics has limited remaining inventory of this part number and no raw material available to supply more once this is depleted.  Please contact our Product Support Engineers to help with an alternate solution for your needs. Customer Service can provide you the latest price and availability.

TECHSPEC® Germanium Meniscus Lenses are designed for demanding infrared applications including infrared imaging or surveillance, remote sensing, or infrared spectroscopy. TECHSPEC Germanium Meniscus Lenses offer superior spherical correction and smaller spot sizes than comparable focal length TECHSPEC Germanium PCX Lenses. These meniscus lenses are offered uncoated or anti-reflection coated for increased performance in the designated coating wavelength range.

Technical Information

AR COATED GERMANIUM

Typical transmission of a 3mm thick Ge window with BBAR (3000-5000nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Ravg <3% @ 3000 - 5000nm

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

Typical transmission of a 3mm thick Ge window with BBAR (3000-12000nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Ravg <5.0% @ 3 - 12μm

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

Typical transmission of a 3mm thick Ge window with BBAR (8000-12000nm) coating at 0° AOI.

The blue shaded region indicates the coating design wavelengh range, with the following specification: 

Ravg <3.0% @ 8 - 12μm

Data outside this range is not guaranteed and is for reference only.

Click Here to Download Data

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