Liwei Quan

3 Patents

• US121816462024

  Optical System and Projection Device

  Union Optech Co., Ltd.

  0 cites
• US118220622023

  Ultra-short Focus Projecting Optical System and Projection Device

  Union Optech Co., Ltd.

  0 cites
• US115614622023

  Optical System and Projection Device

  UNION OPTECH CO., Ltd.

  0 cites