ZnSe Lenses
Featured Product from Avantier Inc.
Avantier specializes in the custom manufacturing of high-quality Zinc Selenide (ZnSe) lenses, catering to diverse specifications and sizes. These precision optics find common applications in thermal imaging, high-power CO2 laser systems, and life sciences.
ZnSe (zinc selenide) is a transparent polycrystalline material that transmits from 0.5 to 21 µm, making it ideal for mid-infrared applications. Its low absorption (below 0.3%) and high thermal shock resistance suit it to laser optics, though anti-reflective coatings are recommended to offset its 29.1% reflectivity at 10.6 µm.
Factory Standard
| Substrate Material | ZnSe |
| Shape | Spherical Plano-Concave, P-Convex, Concave-Convex or Aspheric |
| Surface Figure | λ/20 before coating at 10.6μm |
| Surface Quality | 40-20 per MIL-PRF-13830B |
| Dimensional Tolerance | + 0.00mm, – 0.25mm |
| Thickness Tolerance | +/- 0.25mm |
| Chamfer | 0.35mm at 45° (typical) |
| Concentricity | < 0.05mm |
| Focal Length Tolerance | +/- 2% |
| Antireflection Coating | Ravg < 0.6% per surface at 3-5μmRavg < 0.75% per surface at 8-12μmRavg < 0.5% per surface at 10.6μm |
| Clear Aperture | > 85% |
| Absorption | <0.3% total absorption as measured by CO2 laser calorimetry |
| Design Wavelength | 10.6μm |
Avantier’s ZnSe optical lenses offer an effective combination of optical performance and IR transparency for precision systems operating in the mid- to long-wave infrared range. Futhermore, their versatility and wide adoption across defense, medical, industrial, and scientific sectors underscore their importance. With our expertise in advanced manufacturing, coating, and polishing techniques, we can custom-tailor ZnSe components to meet the stringent demands of your advanced optical systems.
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