Optical lens - Biconvex lens
Lenses are classified based on the curvature of two optical surfaces. As its name suggests, a biconvex lens is a type of biconvex lens that includes an incident and an outgoing surface. Its characteristic is that the focal length in the middle of the lens surface is longer, and the focal lengths at the ends of each lens surface are shorter.
A biconvex lens has a flat surface on one side and a convex surface on the other, with a positive focal length. It is often used to collimate divergent beams or focus complex optical paths. Coated lenses are also widely used in visible and near-infrared applications.
Double convex lens parameters:
| Working range: | 400 nm-700 nm (other bands can be customized) |
Design wavelength: | 546.1nm (n=1.519) |
Focal length tolerance: | ± 2% |
Appearance tolerance: | +0.0/-0.02mm |
Thickness tolerance: | ± 0.02mm |
Eccentricity: | ≤ 3 arcmin |
Face type: | λ / 4@632.8nm |
Surface finish: | National standard level 3, US standard 60-40 |
Light aperture: | >90% |
| Safe chamfering: | <0.2X45 ° |