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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

NIR II Coated Double-Concave (DCV) Lenses

Any of our lenses with a diameter of 5mm or greater can be specified with blackened edges. To specify the blackening, simply append a –INK to the BBAR coated stock number.
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  • 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
  • Various Coating Options: Uncoated, VIS-EXT, MgF2, VIS 0°, VIS-NIR, and NIR I

TECHSPEC® NIR II Coated Double-Concave (DCV) Lenses are designed to have two inward curved surfaces and a negative focal length similar to Plano-Concave (PCV) lenses. These lenses can be used for balancing aberrations created by other lenses within a system due to their negative spherical aberration. Double-Concave (DCV) lenses are commonly used in a variety of applications including image reduction, beam expansion and telescopes. TECHSPEC® NIR II Coated Double-Concave (DCV) Lenses offer optimal performance in the 750nm to 1550nm range.  These lenses are also available in Uncoated, VIS-EXT, MgF2, VIS 0°, VIS-NIR, or with NIR I AR coating options.