User:LucasDrive

Freeform lens is a lens whose surface has no rotational axis symmetry or simply are freeform surface. It has numerous advantages as compared to traditional sphere or asphere lenses. Some of this advantages are :
 * gives higher degree of freedom and flexibility for the designer
 * enhance the optical system performance by expanding field of view and increasing the depth of filed
 * allows miniaturizing optical system with easy system integration.

The designing, fabrication and characterization of this class of optics is still under development. Manufacturing of this class of optics, however, was the major bottleneck to realize even the simple freeform lens designs. The recent progress in diamond turning and injection molding process show its tremendous application potential in spectrometer, illumination and imaging application. Similarly, 3D-printing of freeform lens has also been investigated for low cost rapid prototyping.