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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

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Motion-induced phase shift for dynamic structured light measurement.

Li Kang, Huazhen Liu, Yijia Zhang

|November 15, 2024

Summary

This summary is machine-generated.

This study introduces a novel motion-induced phase shift (MIPS) technique for dynamic 3D shape measurement. The MIPS method accurately captures 3D topography of moving objects, overcoming limitations of traditional static measurement approaches.

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Area of Science:

Optics and Photonics
Metrology
Computer Vision

Background:

Structured light 3D shape measurement is vital in semiconductor inspection, manufacturing, and biomedical imaging.
Traditional methods require static objects, limiting dynamic measurement capabilities.
Existing techniques struggle with inaccurate phase-shifting information.

Purpose of the Study:

To develop a dynamic 3D shape measurement technique using structured light.
To enable precise 3D topography acquisition of moving objects.
To overcome the limitations of static requirements in conventional methods.

Main Methods:

Proposed a novel motion-induced phase shift (MIPS) method for structured light 3D measurement.
Utilized object motion to induce phase shifts by distorting fringe patterns.
Developed algorithms to determine phase information accurately despite motion.

Main Results:

The MIPS method enables dynamic 3D shape measurement.
Accurate 3D topography acquisition of objects moving up to 100 mm/s.
Achieved a relative discrepancy of less than 0.23% in experimental validation.

Conclusions:

The MIPS technique offers a robust solution for dynamic 3D shape measurement.
This method enhances the adaptability of structured light for real-time applications.
MIPS provides high-precision 3D measurements for dynamic industrial and scientific scenarios.