092-0125R-400 25.4 mm Dia. N-BK7 Protected Silver Plano-Concave Spherical Mirror; t=6mm 400nm

This is a 092-0125R-400 25.4 mm Dia. N-BK7 Protected Silver Plano-Concave Spherical Mirror, with a thickness of 6mm and a central wavelength of 400nm. The mirror is sourced from EKSMA Optics, a reputable vendor known for its high-quality optical components.

The mirror is of the curved type, specifically concave, and is based on a circular geometry. It has a diameter of 25.4mm and a thickness edge of 6mm. The effective focal length (EFL) of this mirror is -200mm, and its radius of curvature (R1) is -400mm, indicating a strongly converging mirror.

The mirror is made of N-BK7, a popular optical glass from Schott, known for its excellent optical properties and wide transmission range. This makes the mirror suitable for various applications, including but not limited to, laser systems, interferometry, and optical testing.

The mirror features a protected silver coating, specifically EKS 0025protsil 4000, on the front side. This coating provides high reflectivity in the specified wavelength range, ensuring optimal performance. The 'protected' nature of the coating implies that it is resistant to tarnishing and corrosion, enhancing the mirror's durability and longevity.