Edmund Optics Inc. Double-Concave Lens, 9mm Dia. x -18mm FL, NIR II Coating NT68-010

AR Coated to Provide <0.7% Reflectance per Surface for 750 - 1550nm Double-Concave Lenses Have Two Inward Curved Surfaces and a Negative Focal Length Used for Image Reduction and to Spread Light 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 I.