CM254-250-E02 Dia:1 in Concave Mirror; 400-750nm; f=250 mm Visible Dielectric

The CM254-250-E02 is a concave mirror offered by Thorlabs, a leading vendor in the optical components industry. This mirror, with a diameter of 25.4 mm, is designed for use in the visible light spectrum, specifically at a wavelength of 588 nm.

The mirror's geometry is spherical, with a radius of curvature (R1) of -500 mm, corresponding to a focal length (efl) of 250 mm. This focal length is a key characteristic, determining the mirror's focusing power. The mirror's thickness varies from 6.2 mm at the edge to 6 mm at the center, providing structural rigidity.

The mirror is made of N-BK7 Schott glass, a common material in optical systems due to its excellent optical properties and chemical resistance. The front surface of the mirror is coated with Thorlabs' E02 Visible Dielectric coating, designed for high reflectivity in the visible spectrum (400-750 nm). This coating enhances the mirror's performance, making it suitable for a wide range of applications.