46-239 20 mm Dia. N-BK7 λ/4 Concave Spherical Mirror; EFL=80mm Protected Aluminum 400-2000nm

This is a 46-239 20 mm Dia. N-BK7 λ/4 concave spherical mirror, sourced from the renowned optical components vendor, Edmund Optics. The mirror boasts a 20 mm diameter and an effective focal length (EFL) of 80 mm, making it suitable for a wide range of optical applications.

The mirror is made from N-BK7 Schott glass, a popular choice in the optical industry due to its excellent optical properties and high damage threshold. The concave spherical shape of the mirror is defined by a radius of curvature (R1) of -160 mm, which is crucial in determining the mirror's optical performance.

The mirror's coating is a protected aluminum coating, specifically the EDM PROTAL452008000, which provides high reflectivity across the 400-2000 nm wavelength range. This broadband coating makes the mirror versatile, suitable for various applications, including but not limited to, beam shaping, imaging, and laser systems.

The mirror's thickness varies from 3 mm at the center to 3.31 mm at the edge, providing structural rigidity while minimizing unwanted optical effects. The mirror's geometry and material properties make it an excellent choice for applications requiring high-quality optical performance.

According to the vendor's website, the mirror is currently in stock, ensuring quick delivery and minimal lead time. For more detailed information, including technical drawings and performance data, users are encouraged to visit the provided weblink.