Negative cylinders have one flat surface and one concave surface and have a negative focal length.
| Ross Optical Industries | |
|---|---|
| Product Category | Optical Lenses |
| Product Number | L-PCN017 |
| Product Name | Negative Cylinder |
| Lens Type | Cylindrical Lens |
| Lens Application | Infrared (optional feature); Visible (optional feature); Ultraviolet (optional feature) |
| Focal Length | -40 mm (-1.57 inch) |
| Center Thickness | 4.6 mm (0.1811 inch) |
| Edge Thickness | 6 mm (0.2362 inch) |
