Device and method for measuring and determining the quality of holographic image

摘要

The apparatus and method of the present invention measures diffracted or scattered light to determine the quality of the holographic images/items that have been transferred or reproduced to a film based media. The apparatus comprises one or more illumination and detection devices which illuminate light (e.g., laser) onto the holographic images/items, detect and collect diffracted/scattered light to perform quality inspection of the holographic images/items during a web based holographic manufacturing process.