Resumen de Speckle characterization in free space and imaging space
Guoxian Tang, Meifang Xu, Wenhong Gao, Yunbo Shi, Jun Liu, Xuyuan Chen
There have two ways to observe speckle, free space and image space. We introduced the factors impact speckle contrast in a speckle characterization system and established an equivalent relation between image space speckle characterization and free space speckle characterization, validating the equivalent relation through experiments. The experimental results show that if the equivalent relation come into existence, the speckle contrast measured in image space match well with it in free space. At last we have discussed the speckle in a projection system with a rough surface inside and given the compound speckle measuring method.
