Effect of microprism array and its element parameters on imaging quality

With the advancement of ultra-precision machining, lenses with three-dimensional microstructures have gradually emerged and are widely used in near-eye display devices, infrared imaging, solar concentrators, and other application fields. However, various parameters of the three-dimensional microstructure arrays, such as the corner radius of the microstructure and defects on the working surface, can all impact imaging quality to varying degrees. Therefore, systematically studying the effects of these parameters on imaging quality is of significant importance for optimizing microstructure design and enhancing the performance of optical imaging systems. Simulation results show that the effects of each parameter on imaging quality vary. Defects on the working surface lead to noise in the imaging, reducing image contrast. Rounded corner of microprism lead to trailing artifacts when imaging high-contrast objects. This study reveals the specific impact of each microstructure parameter on imaging quality through systematic simulation experiments and theoretical analysis, providing a theoretical foundation and experimental basis for optimizing the design of prism microstructure arrays. This will aid in the development of higher-performance microstructured optical devices.