1. Design of omnidirectional camera lens system with catadioptic system;Jo,2013
2. Catadioptric Omnidirectional Optical System Using a Spherical Mirror with a Central Hole and a Plane Mirror for Visible Light
3. Design of IR omni-directional optical system for night vision and surveillance of defense and safety;Kang,2015
4. Optical Design of a Catadioptric Omnidirectional LWIR Vision System with F/1.4 and a Field of View 30 degree ~ 110 degree and Analysis of its Tolerance and Athermalization;Kyuhang,2017