The cylindrical lens is an optical element with a cylindrical structure and belongs to the category of aspherical lenses. Cylindrical lenses can focus or diverge light beams in a single direction. Their curved surfaces have refractive power only along a single axis (horizontal or vertical), and are used for generating linear lasers, beam shaping, and astigmatism correction.
One-dimensional beam control: Convert point light source into highly uniform linear light spot.
Simplified optical system: A single cylindrical lens can achieve the effect of a combination of multiple spherical lenses.
Economically efficient: Significantly lower in cost compared to DOE or complex optical systems.
| Material | BK7 or Fused Silica |
| Design Wavelength | 632.8 nm |
| Surface Figure | x: λ/2; y: 2λ |
| Diameter Tolerance | +0.00,-0.15 mm |
| Thickness Tolerance | ±0.2 mm |
| Paraxial Focal Length | ±2% |
| Centration | <3 arc minutes |
| Clear Aperture | >85% |
| Surface Quality | 40-20 scratch and dig |
| Prorective Bevel | 0.25 mm x 45° |
