25.4mm uncoated ZnSe biconcave lens
Uncoated CVD ZnSe Biconcave Lens: 25.4mm Dia, -25.4mm EFL, 10.6μm
High-precision 25.4mm uncoated ZnSe biconcave lens for 10.6μm CO2 lasers. In-stock & custom options with reliable lead times. Contact sales@iroptical.com
Product Overview
Uncoated CVD ZnSe Biconcave Lens: 25.4mm Dia, -25.4mm EFL, 10.6μm
This uncoated CVD ZnSe biconcave lens is precision-manufactured for 10.6μm CO₂ laser systems and infrared optical applications. As part of our comprehensive range of CVD ZnSe lenses, it delivers consistent infrared transmission and strict dimensional tolerances, making it ideal for beam expansion, collimation, and interferometric setups. The lens features a symmetric biconcave geometry with equal curvature on both surfaces, producing a negative focal length to diverge incoming infrared beams with minimal aberration. It is fabricated with a surface accuracy of λ/2 at 632.8nm and a 60-40 scratch-dig finish to ensure reliable performance in demanding industrial and engineering environments.
Technical Specifications
| Parameter | Value |
|---|---|
| Material | Zinc Selenide (ZnSe) |
| Outer Diameter | 25.4 mm |
| Effective Focal Length | -25.4 mm |
| Center Thickness (Tc) | 2.00 mm |
| Edge Thickness (Te) | 4.30 mm |
| Back Focal Length (BFL) | -25.81 mm |
| Radius of Curvature (R) | -71.83 mm |
| Design Wavelength | 10.6 μm |
| Coating | Uncoated |
| Clear Aperture | Greater than 80% |
| Surface Flatness | λ/2 @ 632.8nm |
| Surface Quality | 60-40 Scratch-Dig |
| Focal Length Tolerance | ±1% |
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance | ±0.2 mm |
| Centration Error | Less than 3 arcmin |
| Chamfer | Less than 0.2×45° |
Applications
This biconcave ZnSe lens is engineered for use across a wide range of infrared systems, including but not limited to:
10.6μm CO₂ laser processing and material handling systems
Infrared interferometry and optical testing setups
Beam expansion and collimation in IR optical assemblies
Thermal imaging and infrared sensing systems
FTIR spectroscopy and analytical instrumentation
As a core component of high-performance CO2 laser optics, it maintains stable optical performance even under continuous high-power operating conditions.
Customization & Service
We maintain an extensive in-stock selection of standard infrared lenses for immediate delivery, while also providing full customization support for project-specific requirements. Our engineering team offers drawing-based review for every custom order, ensuring full alignment with your design specifications before quotation.
All our infrared optical components are produced under ISO 9001:2015 certified processes, with order-specific inspection records available on request. We guarantee reliable lead times and consistent quality for both stock and custom orders, supporting OEM, engineering, and sourcing teams worldwide.
Get a Customized Solution
Many engineering and procurement teams face challenges with inconsistent component quality, unpredictable lead times, and limited technical support for custom infrared optics. At iroptical, we address these pain points by combining in-stock availability with flexible custom manufacturing, backed by direct engineering consultation and transparent quality tracking.
If you need assistance with material selection, coating design, or custom geometry, send your drawing and project requirements to sales@iroptical.com. Our technical team will review your specifications and provide a detailed quotation with reliable lead time information.
Technical Parameters
Detailed specifications are not available for this product yet. Please contact the team for application guidance.