Advances and prospects of molding for optical microlens array

The optical microlens array is widely used in the optical system with high demand. The glass molding technology is the most efficient methods of mass production and processing of microlens array with characteristics of high precision, good consistency and low production cost, which has important application and research value. In this paper, the design principle of optical microlens array, as well as mold manufacturing technology, glass molding technology and the corresponding detection technology is introduced. The latest development of microlens array molding test and FEM simulation are mainly discussed. The development of microlens molding, including the material for microlens array molding, the mold surface coating technology, and the application of ultrasonic composite processing technology in the microlens array molding is prospected at the end of this paper.