Compared with the spherical optical lenses, aspheric optical lenses is superior:
1. Have excellent optical properties.
2. Image quality improved. Aspheric is particularly suitable for the instrument that size is limited, with high quality requirements, large field of view, large caliber, high aberration requirements and less structural requirements.
3. Simplifies the optical system. Since the aspherical surface simplifies the optical system, the aberration is corrected in the optical system with a non-substitute sphere.
4. Reduced the weight of the instrument, to achieve the product of the miniaturization and lightweight.