Plano-concave cylindrical lenses
Main features
- Standard lenses are made from laser grade UVFS or BK7 glass material, other materials are also available
- Large selection of focal lengths and sizes
- Anti-reflective coatings on demand
Application examples
- Anamorphic beam shaping
- Laser projection
- Laser scanning
- Description
- Specifications
Plano-concave cylindrical lens is an optical component in which one surface is plano and the other has a cylindrical shape curved inward. Plano-concave cylindrical lens act as plano-concave spherical lens, but it spreads and diverges light only in a single dimension. In order to reduce spherical aberrations collimated light should incident onto the curved surface of the lens. Clindrical lens can be used as a mirror substrate when a concave reflective surface is required. Also, a pair of plano-convex and plano-concave cylindrical lenses are used in anamorphic beam shaping applications. 4Lasers offer various focal length plano-convex cylindrical lenses made from borosilicate crown glass BK7 and UV grade fused silica. In order to achieve optimized transmission ratio anti-reflection coatings are generally applied on to the cylindrical lens input and exit surfaces.
| Plano-concave cylindrical lenses | |
|---|---|
| Design wavelength | 632,8 nm |
| Focal length tolerance | ±3% |
| Clear aperture | >90% |
| Diameter tolerance | +0/-0,1 mm |
| Thickness tolerance | ±0,5 mm |
| Centration erorr | <3 arcmin |
| Protective chamfers | <0,35 mm at 45° |
| Coatings | Uncoated, available |
| Surface quality | 40-20 S-D |
| Surface irregularity | <λ/[email protected],8 nm |
