Real-time multi-point diffraction-based imaging system for strain measurement

摘要

This invention relates to a system and a method for measuring strain of a specimen on a strain measurement system having an image capturing device, a spatial light modulator, a first light source, a second light source and a beam switching controller. The system receives parameters from an input from a user and generates a lenslet pattern to be transmitted to the spatial light modulator. The system transmits a frequency and switching sequence to the beam switching controller to alternate the first and second light sources and activate the image capturing device to capture images. The system receives a first image captured by the image capturing device caused by a beam of the first light source and a second image captured by the image capturing device caused by a beam of the second light source. Based on the first and second images received, the system optimizes the image capturing device.