Meniscus lenses
Meniscus lenses have one concave surface and one convex surface.
Creates a smaller beam diameter, reducing the spherical aberration and beam waste when precision cutting or marking.
Provides a smaller spot size with increased power density at the work piece.
1.Material:bk7,b270,glass,fused silica,sapphire,znse,caf2,ge,etc.
2.Dia.2mm to 600mm
3.Surace quality:10/5 to 80/50
4.flatness;1/4lambda (general standard)
5.CA:85%
6.Tol.:+/-0.1(general standard)
7.Centration:30 seconds
8.Focal Tol.: +/-1%
9.Coating:AR coating,Al,coating,Golded Coating,sliver coating,etc.