32-818 50.8 mm Dia. Borofloat λ/4 Precision Concave Spherical Mirror; EFL=304.8mm Protected Aluminum 400-2000nm

This 32-818 mirror, sourced from Edmund Optics, is a 50.8 mm diameter concave spherical mirror with a protected aluminum coating suitable for wavelengths ranging from 400 to 2000nm. The mirror's base shape is circular, and it boasts a thickness of 12.7 mm at the edge.

The mirror's geometry is precisely crafted, featuring an effective focal length (EFL) of 304.8 mm and a radius of curvature (R1) of -609.6 mm. This combination of specifications makes it an ideal choice for various optical applications.

The mirror's material is borofloat33, a borosilicate glass known for its excellent thermal stability and chemical resistance. This material is often used in high-precision optical systems due to its low thermal expansion coefficient.

The mirror's coating is a protected aluminum coating, specifically EDM DPROTAL300200000. This coating provides high reflectivity and durability, making it suitable for use in a wide range of wavelengths.