Edmund Optics Inc. Double-Concave Lens, 20mm Dia. x -20mm FL, NIR-I Coated NT49-549

AR Coated to Provide <0.5% Reflectance per Surface for 600 - 1050nm Designed for 0° Angle of Incidence Double-Concave (DCV) Lenses have two inward curved surfaces and a negative focal length. They are used for image reduction and to spread light.These lenses are available uncoated or with other Anti-Reflection coating options including: MgF2, VIS 0°, VIS NIR and NIR II.