H-K9L Plano-convex(Round) Cylindrical Lenses, Uncoated/AR400-1650nm
Tuniu Optics H-K9L plano-convex cylindrical lenses consist of one plano surface and one convex cylindrical surface with a positive focal length. They are commonly used to focus parallel or diverging light beams into a line and adjust the aspect ratio of images.
Plano-convex cylindrical lenses are ideal for one-dimensional magnification applications. Spherical lenses act symmetrically on incident light in two orthogonal directions, while cylindrical lenses refract light only in one direction. A typical application is beam shaping for distorted laser beams using a pair of cylindrical lenses. Two plano-convex cylindrical lenses can collimate and circularize the output beam of laser diodes. A single cylindrical lens can also focus diverging light onto a detector array.
To minimize spherical aberration, the collimated beam should enter the convex curved surface when focusing into a line; when collimating a linear light source, the light should incident on the plano side of the lens.
H-K9L is one of the most widely used optical glasses for high-quality optical components. It is the preferred material when the special advantages of UV fused silica — such as excellent transmittance in the ultraviolet range and a low thermal expansion coefficient — are not required.
Parameters
| Material | H-K9L optical glass |
| Design Wavelength | 587.6 nm |
| Surface Quality | 60-40 |
| Diameter Tolerance | + 0.0/- 0.1 mm |
| Center Thickness Tolerance | ± 0.2 mm |
| Focal Length Tolerance | ± 2 % |
| Centering Tolerance | 3′~ 5′ |
| Clear aperture | > 90% |
| Bevel | 0.2 mm X 45° |
| Coating | Uncoated, Ravg < 0.5%@400~700 nm, Ravg < 0.5%@650~1050 nm, Ravg < 0.5%@1000~1650 nm |
Model
Round Type
| Dia.*, mm | Focal Length, mm | Coating |
| Φ12.7 | 12. 7/25/50/75/100 | Uncoated, Ravg < 0.5%@400~700 nm, Ravg < 0.5%@650~1050 nm, Ravg < 0.5%@1000~1650 nm |
| Φ25.4 | 25/50/50/75/100/125/150 |
Rectangular Type
| Size, mm | Focal Length, mm | Coating |
| 5 x 5 | 20 | Uncoated, Ravg < 0.5%@400~700 nm, Ravg < 0.5%@650~1050 nm, Ravg < 0.5%@1000~1650 nm |
| 6 x 4 | 4/5.8 | |
| 8 x 4 | 4/5.8 | |
| 8 x 6 | 6.4 | |
| 9 x 7 | 7.7 | |
| 10 x 10 | 12.7/20/25 | |
| 12 x 6 | 6.4 | |
| 12 x 10 | 10/12.7/15/20/25/40 | |
| 17 x 15 | 20 | |
| 20 x 10 | 10/12.7/15/20/25/40 | |
| 20 x 20 | 50/75/100/150/200/250/300/500/1000 | |
| 40 x 20 | 25/30/40/50/75/100/150/200/250/300/500/1000 | |
| 53 x 50.8 | 50.8/75 | |
| 60 x 30 | 50/100/150/200/300/400/500/1000 |