Economy UVFS Plano-concave Cylindrical Lenses, Uncoated/AR250-450nm
Tuniu Optics UV fused silica plano-concave cylindrical lenses are composed of one plano surface and one concave cylindrical surface with a negative focal length. They are widely used to focus parallel or diverging beams into a linear spot or adjust the aspect ratio of images.
Negative cylindrical lenses function similarly to plano-concave spherical lenses, but only refract light along a single axis. This series of negative cylindrical lenses performs well in one-dimensional beam expansion and is suitable for applications requiring one-dimensional shaping of point light sources. A typical application is converting a collimated laser beam into a line beam with a single cylindrical lens. A pair of cylindrical lenses can be adopted for image shaping. To minimize spherical aberration during beam divergence, orient the curved surface of the lens toward the light source.
Compared with H-K9L optical glass, UV fused silica features a broader transmission spectrum from 185 nm to 2.1 μm and offers high transmittance in the ultraviolet band. It possesses a lower refractive index, superior optical homogeneity, and a smaller thermal expansion coefficient. Meanwhile, it provides excellent chemical resistance and extremely low fluorescence, making it an ideal material for manufacturing various optical components.
Parameters
| Material | UVFS |
| Irregularity (P-V) | λ/4@632.8 nm |
| Design Wavelength | 587.6 nm |
| Surface Quality | 40-20 |
| Diameter Tolerance | + 0.0/- 0.2 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%@250~450 nm |
Model
Rectangular Type
| Size, mm | Focal Length, mm | Coating |
| 10 x 10 | -12.7/-20/-25/-40/-50/-75/-100/-150/-200/-250/-300 | Uncoated, Ravg < 0.5%@250~450 nm |
| 20 x 10 | ||
| 30 x 20 | -25/-50/-75/-100 | |
| 30 x 30 | -40 | Uncoated |
| 25 x 25 | -30/-50 | Uncoated |