Germanium Single Lens

SLGE

Germanium Single Lens
In stock
SKU
SLGE
The single crystal of germanium used in the semiconductor is less absorption in the infrared wavelength of 2 - 20μm and it can be used as an optical element of the infrared light. It is a single lens which was made with the germanium crystal.
It is used as a lens of a camera to observe the infrared, such as thermography.
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Germanium Plano Convex Lens 100mm Focal Length
SLGE-25-100P
100mm
in stock
$277.00
Material Germanium (Ge)
Design Wavelength 10.6μm
Coating Uncoated
Surface reflectance 36% at 5μm
Shape Type Plano Convex spheric (Polished surface on both sides)
Eccentricity <3′
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 60-40
Diameter φ25mm
Focal length f 100mm
Back focal length fb 99.25mm
Edge thickness te 2.74mm
i
Germanium Plano Convex Lens 25mm Focal Length
SLGE-25-25P
25mm
in stock
$277.00
Material Germanium (Ge)
Design Wavelength 10.6μm
Coating Uncoated
Surface reflectance 36% at 5μm
Shape Type Plano Convex spheric (Polished surface on both sides)
Eccentricity <3′
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 60-40
Diameter φ25mm
Focal length f 25mm
Back focal length fb 24.25mm
Edge thickness te 1.95mm
i
Germanium Plano Convex Lens 50mm Focal Length
SLGE-25-50P
50mm
in stock
$277.00
Material Germanium (Ge)
Design Wavelength 10.6μm
Coating Uncoated
Surface reflectance 36% at 5μm
Shape Type Plano Convex spheric (Polished surface on both sides)
Eccentricity <3′
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 60-40
Diameter φ25mm
Focal length f 50mm
Back focal length fb 49.25mm
Edge thickness te 2.48mm

You must be logged in to ask questions

◦It looks that a light does not transmit because of a metallic luster, but it is transmitted through the wide infrared range of 2 - 20μm.
◦A Light of the wavelength of 1.5μm or less does not transmit, so it can also get the effect of infrared transmission filter.
◦Since there is the refractive index of 4 or more, the curvature is slower than the lens of glass.

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