Compared to plano-convex and concave-convex lenses, aspherical lenses form the smaller light spot,
which is extremely good at correcting various aberrations and improving image quality in optical system,
it would provide more clear and comfortable visual effects after special coating.
Substrate material：Germanium(Ge)Silicon(Si).Zinc selenide(ZnSe)
Applications: Widely used in photography lenses, Zoom lenses, Medical instruments, Satellite infrared telescopes, etc.
Effective Focal Length (EFL) Tolerance | ±2% |
Diameter | ±0.005 ′′ |
Effective aperture | >90% |
Surface Figure at 0.63µm | Varies depending upon radius |
Scratch-Dig | 40-20 |
Centrality | <1' |
Material | Part Name | Diameter (mm) | Diameter (inch) | Application | Coating |
Ge | Aspherical mirror | 6.35 | 0.25 | Security | @2-14um |
Ge | Aspherical mirror | 25.4 | 1 | Security | @2-14um |
Ge | Apherical mirror | 50.8 | 2 | Security | @2-14um |
Ge | Aspherical mirror | 48 | 1.88 | Security | @2-14um |
ZnSe | Aspherical mirror | 12.7 | 0.5 | Co2 | @10.6um |
ZnSe | Aspherical mirror | 38.1 | 1.5 | Co2 | @10.6um |
ZnSe | Aspherical mirror | 48 | 48 | Co2 | @10.6um |
