Compared with Spherical lenses, the complex surface profile of Aspherical surfaces can significantly reduce or even eliminate spherical aberrations.
Aspherics can replace complex multi-component spherical systems to achieve lighter and more compact optical systems. The resulting designs have higher transmittance and, in most cases, cost less than multi-lens spherical designs, especially in mass production.　
Therefore, Aspherics are used more and more widely in the high power laser industrial, Imaging, and high precision Laser Alignment and Measurement systems.