China Wholesale Clear Diameter 25mm Spherical Optical Double Convex Lens Biconvex Lenses, Find details about China Camera Lens, Laser Optics from Wholesale Clear Diameter 25mm Spherical Optical Double Convex Lens Biconvex Lenses
Double Convex lens, also as bi-convex lens. It is the similar function with the plano convex lens, they are all positive lens used for focus beam. The used wavelength range as 190-2100nm. Material can be N-BK7,Fused Silica,CaF2,SF11,H-BaK4,H-BaK7,etc, other special requested can be customerized. Coating still available.
Specification | commercialCommercial | High Precision |
Material | As Required Schott,CDGM.etc. | As required Schott, CDGM,etc. |
Diameter Tolerance | +0.00/-0.20mm | +0.00/-0.05mm |
Focual Length Tolerance | Typical +/-5%@633nm | Typical +/-2% @633nm |
Centration | Typical <3arcmin | Typical <3arcmin |
Surface Flatness@632.8nm | L/4 | L/8 |
Surface Quality | 80-50 | 40-20 |
Bevel | 0.2-0.5 | 0.05-0.2 |
Coating | As required, with paint, Protection coating, high precision |