This is a 092-0125FR-600 25.4 mm Dia. N-BK7 Enhanced Silver Plano-Concave Spherical Mirror, designed for use in the spectral range of 600-1100nm. The mirror is sourced from EKSMA Optics, a reputable vendor known for its high-quality optical components.
The mirror is of the curved variety, specifically concave, and is based on a circular geometry. It has a diameter of 25.4mm and a thickness of 6mm at the edge. The effective focal length (EFL) of this mirror is -300mm, and its radius of curvature (R1) is -600mm.
The mirror is made of N-BK7, a popular optical glass from Schott. This material is known for its excellent optical properties, making it suitable for a wide range of applications.
The mirror's front surface is coated with "eks enhsil600110045", an enhanced silver coating designed for high reflectivity in the 600-1100nm range. This coating ensures optimal performance and longevity of the mirror.