35-571 25.4mm Dia. x 177.8mm EFL; 90° Protected Gold 100A; Off-Axis Parabolic Mirror Protected Gold 700-10000nm

The 35-571 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, particularly in infrared (IR) systems.

The mirror's geometry is defined by a 88.9mm PFL (Pupil Focal Length) and a 177.8mm EFL (Effective Focal Length), with an off-axis angle of 90°. This off-axis design allows for a larger field of view compared to traditional parabolic mirrors, making it ideal for imaging applications. The mirror's radius of curvature is 177.8mm, and its aperture is 31.75mm.

The mirror is made from N-BK7 Schott glass, a popular choice for its high homogeneity, low auto-fluorescence, and excellent transmission properties in the visible and near-infrared spectrum. The front surface of the mirror is coated with Edmund Optics' proprietary EDM PRGold 700-10000 coating, a protected gold coating that provides high reflectivity (over 95%) across the entire 700-10000nm wavelength range. This coating ensures optimal performance and longevity, even in harsh environments.