VIS-NIR Coated Double-Concave (DCV) Lenses
Original price was: $41.00.$28.70Current price is: $28.70.
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TECHSPEC® VIS-NIR 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® VIS-NIR Coated Double-Concave (DCV) Lenses are optimized for transmission (>99%) in the near-infrared. These lenses are also available Uncoated, VIS-EXT, MgF2, VIS 0°, NIR I, or with NIR II AR coating options.
- AR Coated to Provide <1.25% Reflectance per Surface for 400 – 1000nm
- <0.25% Reflectance @ 880nm
- Designed for 0° Angle of Incidence
- Various Coating Options: Uncoated, VIS-EXT, MgF2, VIS 0°, NIR I, and NIR II
| Coating | VIS-NIR (400-1000nm) |
|---|---|
| Wavelength Range (nm) | 400 – 1000 |
| Bevel | Protective bevel as needed |
| Coating Specification | Rabs ≤0.25% @ 880nmRavg ≤1.25% @ 400 – 870nmRavg ≤1.25% @ 890 – 1000nm |
| Focal Length Tolerance (%) | ±1 |
| Surface Quality | 40-20 |
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