rotary scanner mechanical scanners risley prism scanners improve on gimbal galvo double-prism multi-mode scanning: principles and technology

rotary scanner mechanical scanners risley prism scanners improve on gimbal galvo

 double-prism multi-mode scanning: principles and technology 

https://www.mdpi.com/2073-8994/15/2/336

Symmetry | Free Full-Text | Symmetries of Scan Patterns of Laser Scanners with Rotational Risley Prisms

https://www.mdpi.com/2076-3417/11/18/8451

Applied Sciences | Free Full-Text | Exact Scan Patterns of Rotational Risley Prisms Obtained with a Graphical Method: Multi-Parameter Analysis and Design