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Diameter (mm):
25.40 +0.00/-0.10
Effective Focal Length EFL (mm):
50.80
Numerical Aperture NA:
0.25
Back Focal Length BFL (mm):
49.35
Substrate:
Many glass manufacturers offer the same material characteristics under different trade names. Learn More
TECHSPEC® Zinc Selenide (ZnSe) Aspheric Lenses are designed to provide diffraction-limited focusing performance for 10.6µm CO2 lasers. Manufactured from Coherent® Infrared ZnSe material featuring <0.0005 cm-1 bulk absorption at 10.6µm, these lenses are available uncoated or with a broadband anti-reflection coating providing superior transmission from 8 - 12µm. The precision designs are ideal for integration into laser systems, thermal imaging assemblies, and FTIR devices. TECHSPEC Zinc Selenide Aspheric Lenses feature an irregularity of <λ/20 at 10.6µm, 40-20 surface quality, and <50Å surface roughness.
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