87-698 50 mm Dia. N-BK7 Plano-Convex Spherical Mirror; EFL=400mm Protected Gold 700-2000nm

The 87-698 is a 50 mm diameter Plano-Convex Spherical Mirror, sourced from the renowned optical component vendor, Edmund Optics. This mirror is designed for use in a wide range of applications, particularly where high-quality reflective surfaces are required within the 700-2000nm wavelength range.

The mirror's geometry is characterized by a convex shape with a 400mm Effective Focal Length (EFL), making it suitable for focusing or collimating light in various optical systems. The base shape is circular, with a thickness that varies from 4.61mm at the edge to 5mm at the center, providing structural rigidity and stability.

The mirror is crafted from N-BK7, a high-quality borosilicate glass known for its excellent optical properties. This material is often used in high-precision optical systems due to its low coefficient of thermal expansion and high homogeneity.

The reflective surface of the mirror is coated with Protected Gold, a durable and corrosion-resistant coating that enhances its reflectivity within the 700-2000nm wavelength range. This coating is designed to withstand the rigors of regular use, ensuring the mirror maintains its performance over time.