Dot matrix for evaluating holographic recording process

Dry plate based holography is still playing an important role in some areas that demands big fields of view and high resolution simultaneously. But the recording effect of the dry plate based holography is affected by large amount of factors. Therefore, we put a dot matrix in the field of view and exposed it at the same time with the true object. By analyzing the contrast and the background noise of the reconstructed image of the dot matrix, the overall effect of the holographic process could be evaluated. The dot matrix and the analyzing method were applied to the study of finding the relationship of the reconstructed contrast and background noise to exposure energy and developing time. The analyzed result showed some special features, which might be used to evaluate holographic recording process.