This design is made of titanium alloy and resin through 3D printing. The pivot-joint screwless hinge (patent pending) hidden in the front frame reduces the assembly relationship, which is convenient for users to wear and keep and makes the product unique and integrated. The outer side of the temples and the front surface of the frame are designed with radial textures, which improves the strength of the frame and makes it have a recognizable aesthetic.

Li Hongwei is lecture from State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi'an, P.R. China. PhD focuses on DfAM (Design for Additive Manufacturing), Patient-Specific 3D Printed Medical Devices for Treatment of Fracture Healing .

Xi'an Jiaotong University (XJTU) is a key university under the direct administration of the Ministry of Education of China and is one of the oldest universities in China. XJTU is one of China’s first institutions of modern higher education. We celebrated our 120th anniversary of the founding of Jiaotong University and the 60th anniversary of its westward relocation on April 8, 2016.