Jianwei He

2 Patents

• US121969332025

  Zoom Lens

  Dongguan Yutong Optical Technology Co., Ltd.

  0 cites
• US121175932024

  Wide-angle Lens Including Seven Lenses of −−+++−+ or −++++−+ Refractive Powers

  Dongguan Yutong Optical Technology Co., Ltd.

  0 cites