43-969 152.4 mm Dia. Borofloat λ/4 Precision Concave Spherical Mirror; EFL=609.6mm Protected Aluminum 400-2000nm

This is a 43-969 152.4 mm Dia. Borofloat λ/4 Precision Concave Spherical Mirror, available from Edmund Optics. The mirror has a protected aluminum coating that is effective in the 400-2000nm wavelength range, making it suitable for a wide range of applications.

The mirror is designed with a spherical shape and a concave curvature. The base shape is circular, with a diameter of 152.4 mm. The mirror's thickness at the edge is 25.4 mm, providing robustness and stability. The effective focal length (EFL) of this mirror is 609.6 mm, which is a crucial parameter for optical system design.

The mirror is made of Borofloat33, a high-quality borosilicate glass known for its excellent transmission properties, chemical resistance, and thermal stability. This makes it an ideal choice for applications that require high precision and durability.

The mirror's coating is Edmund Optics' DPROTAL300200000, a protected aluminum coating that provides high reflectivity and durability. The λ/4 designation indicates that the coating is a quarter-wave thickness at the design wavelength, which is 588 nm in this case. This ensures optimal performance and minimal phase shift for the specified wavelength.