We mainly divide spherical lenses into three types, the convex lenses are used to collimated diverging light or to focus collimated light. The concave lenses diverge collimated incident light. The two curves of the meniscus lens lies of the same direction, just like a meniscus when viewed by its cutaway.
Common precision | High precision | |
Diameter | 3mm~300mm or larger | |
Material | BK7, FS, UVFS, CaF2, ZnSe, Si, Ge; | |
Diameter tolerance | +0.0/-0.2 mm | +0.0/-0.1 mm |
Tc tolerance | ± 0.3 mm | ± 0.1 mm |
Clear aperture | >85% | >90% |
Surface quality | 60-40 S-D | 40-20, 20-10 S-D |
Surface flatness | 1λ@632,8 nm | 1/4 λ @632.8nm |
Centration | ±3 arc min | ±1 arc min |
Coating | Uncoated, available upon on request | |
Contact: FuZhou Min-optronics Technology Co.,Ltd
Phone: 18305996352
Tel: 18305996352
Email: sales@minoptronics.com
Add: Room 1321, building No.3,15 Gaoxin Avenue, Shangjie Town, Minhou Country, Fuzhou, Fujian, PR. China
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