This is a 092-3115R-3000 protected aluminium spherical plano-concave mirror, sourced from EKSMA Optics. The mirror has a diameter of 25.4 mm and a thickness of 6 mm at the edge. It is designed for use with a wavelength of 300 nm and features a UVFS protected aluminium coating on the front surface, identified as EKS 0015PROTAL 3000.
The mirror's geometry is spherical, with a radius of curvature (R1) of -3000 mm, resulting in a focal length (EFL) of -1500 mm. This curvature and the specified coating make it suitable for applications that require high reflectivity and precision.
The mirror is available for purchase through the EKSMA Optics website, where you can find more detailed specifications and related products. Please note that the link provided leads to the general metallic mirrors page, as the specific product page was not available at the time of data collection.