A flat convex cylindrical lens has a flat surface and a cylindrical surface, with a positive focal length. Unlike spherical lenses, cylindrical lenses only act on the beam in one direction. Cylindrical lenses are generally used for beam shaping, and typical applications include collimating a double cylindrical lens group and circularizing the output beam of a laser diode. To reduce spherical aberration, when a planar convex cylindrical lens is used to focus a collimated beam into a line, the beam should be incident on the surface of the lens; When using a quasi linear light source, the beam should be incident onto the lens plane.
Dimension Tolerance | +0/-0.2mm |
Thickness Tolerance | ±0.2mm |
Surface Quality | 60/40 scratch and dig |
Clear Aperture | >90% |
Flatness | N<3(0.5)@632.8nm |
Centration | <3 arc minutes |
Focal Length Tolerance | ±2% |
Chamfer | Protective<0.5mmx45° |
A flat convex cylindrical lens has a flat surface and a cylindrical surface, with a positive focal length. Unlike spherical lenses, cylindrical lenses only act on the beam in one direction. Cylindrical lenses are generally used for beam shaping, and typical applications include collimating a double cylindrical lens group and circularizing the output beam of a laser diode. To reduce spherical aberration, when a planar convex cylindrical lens is used to focus a collimated beam into a line, the beam should be incident on the surface of the lens; When using a quasi linear light source, the beam should be incident onto the lens plane.
Dimension Tolerance | +0/-0.2mm |
Thickness Tolerance | ±0.2mm |
Surface Quality | 60/40 scratch and dig |
Clear Aperture | >90% |
Flatness | N<3(0.5)@632.8nm |
Centration | <3 arc minutes |
Focal Length Tolerance | ±2% |
Chamfer | Protective<0.5mmx45° |