Negative cylindrical lenses act as plano-concave spherical lenses, except on only one axis. These lenses are used in applications that require one dimensional shaping of a light source. These H-K9L Plano-Concave Cylindrical lenses are available uncoated or with one of three anti-reflection coatings：VIS (400~700nm)；NIR (650~1050nm) and SWIR(1000~1650nm)，which can reduce the amount of light reflected from each surface of the lens.
| Material | Optical glasses, Fused Silica, Corning 7980, CaF2 |
| Dimension Range | 5 ~ 300mm |
| Dimension tolerance | +/-0.01 ~ +/-0.2mm |
| Thickness tolerance | +/-0.01 ~ +/-0.2mm |
| Focal Length tolerance | +/-1% |
| Surface quality | 10-5 ~ 80-50 |
| Surface Figure | λ/20 ~ λ |
| Clear Aperture | >90% |
| Centration | 10”~ 5’ |
| Chamfer | C 0.3mm@45 degree |
| Coating | AR coating, Reflection coating, Splitter coating etc. |
| * Remark：Customized is available | |
