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LightPath® Mid-Wave and Long-Wave Infrared (IR) Aspheric Lenses

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  • Wavelength Range of 1.8 - 12μm
  • Variety of Coating Options
  • Mounted and Unmounted Versions

Common Specifications

Bevel:
Protective bevel as needed
Substrate:
Black Diamond™ BD-2 (Ge28Sb12Se60)
Surface Quality:
80-50
Index of Refraction (nd) @ 10μm:
2.6023
Index of Refraction (nd) @ 14μm:
2.5843
Index of Refraction (nd) @ 4μm:
2.6210
Index of Refraction (nd) @ 5μm:
2.6173
Conjugate Distance:
Infinite
Density (g/cm3):
4.68
Thermo-optic coefficient dn/dT:
70 x 10-6/°C from -40° to +80°C (5 - 14 μm)
Transformation Temperature (°C):
285.00

Products

Dia. (mm) EFL (mm) NA  Coating   Compare   Stock Number   Price  Buy
6.50 4.00 0.56 BBAR (1800-3000nm)
Other Coating Options
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6.50 4.00 0.56 BBAR (3000-5000nm)
Other Coating Options
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8.00 5.95 0.56 BBAR (3000-5000nm)
3.50 1.50 0.72 BBAR (1800-3000nm)
Other Coating Options
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3.50 1.50 0.72 BBAR (3000-5000nm)
Other Coating Options
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4.50 1.47 0.83 BBAR (8000-12000nm)
5.50 1.87 0.85 BBAR (1800-3000nm)
Other Coating Options
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5.50 1.87 0.85 BBAR (8000-12000nm)
Other Coating Options
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6.50 4.00 0.56 BBAR (3000-5000nm)
Other Coating Options
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9.25 3.00 0.71 BBAR (1800-3000nm)
6.24 1.50 0.72 BBAR (1800-3000nm)
8.24 1.47 0.83 BBAR (1800-3000nm)
Other Coating Options
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8.24 1.47 0.83 BBAR (8000-12000nm)
Other Coating Options
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5.50 1.87 0.85 BBAR (1800-3000nm)
Other Coating Options
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Product Details

LightPath® Mid-Wave and Long-Wave Infrared (IR) Aspheric Lenses feature a low-cost, molded design and offer several key benefits over Germanium substrate aspheres. With a dn/dT and CTE significantly less than that of Germanium, the lenses feature a smaller change in focal length as a function of temperature change. Featuring a higher operating temperature than Germanium (which suffers 20 – 30% transmission loss at 100°C), the lenses can be used in applications including collimators for QCL lasers and as components within thermal imaging assemblies. LightPath Mid-Wave and Long-Wave Infrared (IR) Aspheric Lenses have a wavelength range of 1.8 - 12μm. These lenses are available mounted or unmounted, in a variety of coating options.  

Technical Information