This Letter demonstrates a novel lateral shear interferometer system for simultaneous measurement of three-dimensional(3D)shape and thickness of transparent objects.Multi-frequency fringe patterns can be created by ti...This Letter demonstrates a novel lateral shear interferometer system for simultaneous measurement of three-dimensional(3D)shape and thickness of transparent objects.Multi-frequency fringe patterns can be created by tilting mirrors at different inclination angles.With a single camera,the multi-frequency fringes are recorded in one image.The phase-shift of the fringes can be generated synchronously only by moving a plane-parallel plate along an in-plane parallel direction.According to the feature of transparent materials,the thickness and 3D shape can be reconstructed simultaneously based on the relationship between the in-plane displacement and their characteristics.The experiment was conducted on a thin transparent film subjected to a shearing force,which verifies the feasibility of the proposed system.展开更多
基金supported by the National Natural Science Foundation of China(Nos.11672167,11602056,11472081,and 11532005)
文摘This Letter demonstrates a novel lateral shear interferometer system for simultaneous measurement of three-dimensional(3D)shape and thickness of transparent objects.Multi-frequency fringe patterns can be created by tilting mirrors at different inclination angles.With a single camera,the multi-frequency fringes are recorded in one image.The phase-shift of the fringes can be generated synchronously only by moving a plane-parallel plate along an in-plane parallel direction.According to the feature of transparent materials,the thickness and 3D shape can be reconstructed simultaneously based on the relationship between the in-plane displacement and their characteristics.The experiment was conducted on a thin transparent film subjected to a shearing force,which verifies the feasibility of the proposed system.
