Suisui Wan, Yajun Pang, Ruixiang Xue, Zhenxu Bai. Design of short-range LiDAR receiver based on MEMS mirror[J]. Opto-Electronic Engineering, 2024, 51(3): 230287-1
- Opto-Electronic Engineering
- Vol. 51, Issue 3, 230287-1 (2024)
Fig. 1. System overall structure diagram
Fig. 2. MEMS scanning spot array with varying diameters. (a) Spot diameter of 3 mm; (b) Spot diameter of 5 mm
Fig. 3. Variation of light spot diameter with different focal lengths
Fig. 4. Angular distribution of MEMS light spot deviations
Fig. 5. MEMS deflection angle and echo power correlation
Fig. 6. Optical antenna structure for reception
Fig. 7. Surface track image of the detector
Fig. 8. Geometric ring entrance energy map
Fig. 9. Distribution of relative illuminance in different fields of view
Fig. 10. Wide angle echo reception circuit
Fig. 11. Design of TDC7200 time measurement
Fig. 12. TDC7200 internal working mechanism
Fig. 13. TDC time measurement process flowchart
Fig. 14. Histogram of actual measurement with 150 ns
Fig. 15. Measurement error of TDC in actual conditions
Fig. 16. Receiving physical devices
Fig. 17. Time distribution of testing at a distance of 6 m
Fig. 18. Actual indoor scene testing
Fig. 19. 100 kHz echo waveform
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Table 1. Optical receiver system specifications
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Table 2. Time measurement data (time unit: ns)
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Table 3. Revised actual ranging results
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Table 4. Results of 100 kHz echo test
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