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-PCN041 |
| Product Name | Negative Cylinder |
| Lens Type | Cylindrical Lens |
| Lens Application | Infrared (optional feature); Visible (optional feature); Ultraviolet (optional feature) |
| Focal Length | -250 mm (-9.84 inch) |
| Center Thickness | 7 mm (0.2756 inch) |
| Edge Thickness | 9.4 mm (0.3701 inch) |
