Nowadays freeform surfaces play important roles in improving the imaging per-formance in non-rotationally symmetric optical systems. However, there are currentl

"Freeform optical surfaces are creating exciting new opportunities in optics for design, fabrication, metrology, and assembly. While the term freeform is curren

One of the essential properties of the freeform surface is that its asymmetric and locally variant surface profile breaks the symmetry of an optical system, thu

"Unobscured reflective optical systems require unique optical design techniques due to their lack of rotational symmetry. The aberrations introduced to avoid ob

The primary objective of this research is to develop optical and opto-mechanical design procedures for reflective optical systems. Challenges in fabrication and