87-687 50 mm Dia. N-BK7 Plano-Convex Spherical Mirror; EFL=400mm Protected Silver 450-10000nm

This is a high-quality 87-687 Plano-Convex Spherical Mirror, sourced from the renowned optical components vendor, Edmund Optics. The mirror boasts a 50 mm diameter and a focal length of 400mm, making it suitable for a wide range of optical applications.

The mirror is made from N-BK7, a popular optical glass from Schott, known for its excellent optical properties and high damage threshold. The N-BK7 substrate ensures high transmission in the visible and near-infrared regions, making this mirror ideal for applications in these spectral ranges.

The mirror features a protected silver coating, denoted as 'edm dprotsil3001000'. This coating provides high reflectivity across the 450-10000nm spectral range, enhancing the mirror's performance in infrared applications. The 'protected' nature of the coating ensures durability and resistance to tarnishing, ensuring long-term performance.

The mirror's geometry is spherical, with a radius of curvature of 800mm. This curvature, combined with the mirror's 50mm diameter, results in a thickness of 4.61mm at the edge and 5mm at the center. This robust construction ensures the mirror's stability and resistance to deformation under typical operating conditions.