Low Reflection Coating for 8~12μm Infrared
25.40mm Diameter 75.00mm Focal Length ZnSe Biconvex Lens, Ravg<1.5% @8~12μm
High precision 25.4mm D 75mm FL ZnSe biconvex lens with Ravg
Product Overview
25.40mm Diameter 75.00mm Focal Length ZnSe Biconvex Lens, Ravg<1.5% @8~12μm
This high-precision CVD ZnSe biconvex lens is optimized for 10.6μm design wavelength, featuring low average reflectance below 1.5% across 8~12μm infrared band. As one of the core ZnSe lenses, it delivers stable beam shaping performance for industrial infrared laser and thermal optical systems.
Technical Specifications
| Material | ZnSe (Zinc Selenide) |
| Diameter (D) | 25.40 mm |
| Diameter Tolerance | +0.0 / -0.1 mm |
| Effective Focal Length (EFL) | 75.00 mm |
| Focal Length Tolerance | ±1% |
| Back Focal Length (BFL) | 74.4 mm |
| Center Thickness (Tc) | 2.80 mm |
| Center Thickness Tolerance | ±0.2 mm |
| Edge Thickness (Te) | 2.00 mm |
| Radius R1/R2 | 209.60 mm |
| Design Wavelength | 10.6 μm |
| Coating | Ravg<1.5% @8~12μm |
| Centration Error | < 3 arcmin |
| Surface Quality | 60/40 |
| Bevel | 0.2mm × 45° |
Applications
The ZnSe biconvex lens is widely adopted for laser collimation, laser beam expansion and beam focusing. It fits CO2 laser systems, thermal imaging equipment and other infrared optical assemblies that require reliable infrared optics components.
Customization & Service
iroptical maintains extensive in-stock optical components and supports high-level customization for IR windows and ZnSe lenses. All optics are manufactured under strict quality standards with reliable lead times for bulk and prototype orders.
Pain Points & CTA
Many engineering teams struggle with long lead times, inconsistent coating performance and limited custom options for infrared laser optics. Our technical team can support rapid validation and tailored modifications based on your optical design. Please send your requirements to sales@iroptical.com or submit an inquiry via our website for detailed quotation and availability check.
Technical Parameters
Detailed specifications are not available for this product yet. Please contact the team for application guidance.