This is a 092-0130R-1000 25.4 mm Dia. N-BK7 Protected Gold Spherical Plano-Concave Mirror, a high-quality optical component sourced from EKSMA Optics. The mirror has a base shape of a circle with a diameter of 25.4 mm and a thickness at the edge of 6 mm.
The mirror's geometry is spherical, with a radius of curvature (R1) of -1000 mm, which results in an effective focal length (EFL) of -500 mm. This type of mirror is often used in optical systems where a concave mirror is required.
The mirror is made of N-BK7 Schott, a popular optical glass known for its excellent optical properties and wide transmission range. The coating on the front surface is EKS 0030protgold900, a protected gold coating designed for use at a wavelength of 900 nm. This coating ensures high reflectivity and durability, making it suitable for various applications.
The mirror is available in stock and more information can be found on the EKSMA Optics website.