# Risley Prisms Scanning Optical Imaging System Using Liquid Crystal Spatial Light Modulator

Song, Dalin;Chang, Jun;Zhao, Yifei;Zhao, Qing

• Accepted : 2019.01.31
• Published : 2019.06.25
• 15 2

#### Abstract

Chromatic aberrations induced by Risley prisms made of a single material can be substantially compensated using a liquid crystal spatial light modulator while still keeping the prism pairs compact, simple and lightweight. A ${\pm}10^{\circ}$ optical scanning imaging system with ${\pm}2^{\circ}$instantaneous field based on LC-SLM correction is designed as an example. The ultimate simulation results show that this kind of scheme is an effective way of improving imaging performance dynamically across the full field of scanning.

#### Keywords

Optical design;Risley prisms;Achromatic aberration;Liquid crystal spatial light modulator