光学精密工程2024，Vol.32Issue(17)：2663-2675,13.DOI:10.37188/OPE.20243217.2663
激光电子散斑干涉法隐形牙齿矫治器全场变形测量
Whole-field deformation measurement of clear orthodontic aligner using electronic speckle pattern interferometry
摘要
Abstract
To objectively and accurately measure the full-field deformation of clear aligners for improved clinical effectiveness and safety,a comprehensive three-dimensional deformation measurement system based on laser electronic speckle pattern interferometry has been established.The specimen's surface is illu-minated with a tri-wavelength laser,generating a color speckle pattern.A phase-shift device produces a quasi π/2 phase step for all three color channels.Multi-frame images of the color speckle pattern are cap-tured using a 3CCD color camera.Deformation phases are extracted using a 90° step four-frame technique from the separated red,green,and blue channels.A window-deformable filter effectively denoises the phase fringe patterns,allowing six derivative components to be obtained directly from the three deforma-tion components using a digital differential method.Results show that the system achieves a precision of no more than 2.4''for micro-rotation and better than 10 με for strain measurements.Experimental results on clear aligners align closely with expected outcomes.关键词
三维测量/激光电子散斑干涉/微变形/隐形矫治器Key words
3-D measurement/electronic speckle pattern interferometry/micro-deformation/clear aligner分类
物理学引用本文复制引用
王嘉雯,吴峻青,吴敏杨,安应彪,刘京京,严斌,杨福俊..激光电子散斑干涉法隐形牙齿矫治器全场变形测量[J].光学精密工程,2024,32(17):2663-2675,13.基金项目
国家自然科学基金资助项目(No.12072073,No.82071143) （No.12072073,No.82071143）
江苏省重点研发计划临床前沿技术项目(No.BE2022795) （No.BE2022795）
