CM254-200-E02 Dia:1 in Concave Mirror; 400-750nm; f=200 mm Visible Dielectric

The CM254-200-E02 is a concave mirror offered by Thorlabs, a leading vendor in the optical industry. This mirror, with a diameter of 25.4 mm, is designed for use in the visible spectrum, specifically between 400 and 750 nm.

The mirror's geometry is spherical, with a radius of curvature (R1) of -400 mm, which corresponds to a focal length (efl) of 200 mm. This focal length is a key parameter in determining the mirror's magnification and focusing capabilities.

The mirror's thickness varies from 6.2 mm at the edge to 6 mm at the center, providing structural rigidity while minimizing weight. The mirror is made from N-BK7 Schott, a popular optical glass known for its excellent optical properties and durability.

The mirror's front surface is coated with Thorlabs' E02VisibleD40075 coating, designed to enhance reflectivity in the visible spectrum. This coating ensures high-quality reflection, making the mirror suitable for various applications, including imaging, beam shaping, and interferometry.