Fig. 1. Diagram of optical delay line of involute mirror

Fig. 2. Effect of involute parameters on delay time and rotation angle

Fig. 3. Model diagram of rotating mirror parts. (a) Rotating axis; (b) fixing plate of rotating mirror; (c) rotating mirror; (d) rotating mirror array

Fig. 4. Optical delay line device. (a) Bearing; (b) involute reflector; (c) fixing structure; (d) bearing fixation ring; (e) optical delay line model diagram; (f) optical delay line exploded diagram

Fig. 5. Ray tracing diagram of optical delay line

Fig. 6. Ray tracing of optical delay line at differentΔφ. (a) 0°; (b) 10°; (c) 25°; (d) 35°

Fig. 7. Schematic diagram of eccentricity error. (a) y-axis eccentricity error; (b) x-axis eccentricity error

Fig. 8. Plane mirror limit position with x-axis eccentricity error

Fig. 9. Spot illuminance diagram of 1 mm eccentricity error. (a) y-axis 10°; (b) y-axis 25°; (c) y-axis 35°; (d) x-axis 10°; (e) x-axis 25°; (f) x-axis 35°

Fig. 10. Schematic diagram of plane mirror reflection angle error

Fig. 11. Effect of laser divergence

Fig. 12. Ray tracing corresponding to different incident light divergence angles. (a) 0°; (b) 0.5°; (c) 1°