Bi-concave lenses have two inward curved surfaces. These lenses have a negative focal length. Our catalog bi-concave lenses have an identical curvature on both sides of the lens and are therefore symmetric. At unit conjugation, coma and distortion are cancelled out due to the symmetry. They are used to diverge incoming light or increase the focal length of an existing optical system.
| Ross Optical Industries | |
|---|---|
| Product Category | Optical Lenses |
| Product Number | L-BCC012 |
| Product Name | Bi-Concave Lens |
| Lens Type | Spherical Lens |
| Lens Application | Infrared (optional feature); Visible; Ultraviolet (optional feature) |
| Focal Length | -20 mm (-0.7874 inch) |
| Center Thickness | 1.5 mm (0.0591 inch) |
| Edge Thickness | 3.5 mm (0.1378 inch) |
