Design of the Telecentric Lens for Dual Side Imaging of the Small Size Particles with Equal Optical Path

Due to the industrial automation requirements, a machine vision is widely used in the industrial production and detection. Compared with the traditional artificial, it has the advantages of high speed and high accuracy, especially to the small-size granular products. It is difficult to detect the surfaces of the small-size granular products quickly and accurately by artificial vision due to the li...