35-591 25.4mm Dia. x 203.2mm EFL; 90° Protected Gold 100A; Off-Axis Parabolic Mirror Protected Gold 700-10000nm

The 35-591 is a high-quality Off-Axis Parabolic Mirror, sourced from the renowned optical vendor, Edmund Optics. This mirror, with a diameter of 25.4mm, is designed for use in the 700-10000nm wavelength range, making it suitable for a wide range of applications, including infrared and thermal imaging systems.

The mirror's geometry is defined by a 101.6mm PFL (Pupil Focal Length) and a 203.2mm EFL (Effective Focal Length), with an off-axis angle of 90°. This off-axis design allows for superior optical performance in systems where a conventional parabolic mirror would introduce obscuration or vignetting. The mirror's surface has a radius of curvature of 203.2mm, and its aperture is 31.75mm.

The mirror is made from N-BK7 Schott glass, a material known for its excellent optical properties and high damage threshold. The front surface of the mirror is coated with EDM PRGold 700-10000, a protected gold coating that provides high reflectivity across the entire 700-10000nm wavelength range. This coating also offers excellent environmental stability and resistance to tarnish and corrosion.