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: VIS 0°, VIS NIR, NIR I and NIR II.
| Edmund Optics Inc. | |
|---|---|
| Product Category | Optical Lenses |
| Product Number | NT32-991 |
| Product Name | Double-Concave Lens, 20mm Dia. x -20mm FL, MgF2 Coating |
| Lens Type | Spherical Lens |
| Focal Length | -20 mm (-0.7874 inch) |
| Center Thickness | 2 mm (0.0787 inch) |
| Edge Thickness | 5.03 mm (0.1980 inch) |
