This is a 091-0125R-50 Protected Silver Plano-Concave Spherical Mirror, sourced from EKSMA Optics. The mirror has a circular base shape with a diameter of 12.7 mm and a thickness of 6 mm at the edge. The mirror's geometry is spherical, with a radius of curvature (R1) of -50 mm, which results in a focal length (EFL) of -25 mm.
The mirror is made of N-BK7 Schott, a popular optical glass due to its excellent optical properties and wide transparency range. This mirror is designed to operate at a wavelength of 400 nm.
The front surface of the mirror is coated with EKS 0025protsil 4000, a protected silver coating. This coating provides high reflectivity and durability, making it suitable for various applications.
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