Germanium Plano Convex (PCX) Lenses are made from high-purity germanium, with transmission in the 2.0–16μm range. They are widely used in infrared imaging, thermal vision, and optical systems for harsh environments. With high refractive index and durability, they are ideal for advanced infrared applications.
Material :
GermaniumDesign wavelength :
10.6μFocal Length Tolerance :
±1%Dimension Tolerance :
0.0 / -0.1 mmThickness Tolerance :
±0.2 mmSurface Accuracy :
λ/2 @ 632.8 nmSurface Quality :
60-40Centration :
< 3'Clear Aperture :
> 80%Edge Bevel :
0.2×45°
Product Description
The Germanium Plano Convex Lens is a widely used infrared optical element, featuring one flat side and one convex side to focus light into a single point. Optimized for 10.6μm wavelength, it can be used individually or combined with other lenses for beam collimation, expansion, or reduction. Compared to conventional lenses, germanium offers high Knoop hardness, excellent chemical resistance, and stable performance in harsh conditions. These lenses are ideal for infrared imaging, gas detection, thermal security devices, and scientific optical applications.
Performance Advantages
Transmission in 2.0–16μm IR range
High refractive index, optimized for thermal imaging
Superior surface quality for excellent imaging
Optional IR AR coatings for enhanced transmission
Durable and stable under harsh conditions
Application Range
Infrared thermal imaging systems
Environmental gas detection (CO₂, CH₄, NH₃, etc.)
Security monitoring and night vision devices
Optical research laboratories
Beam control in laser systems
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