Definition: Anaglyphics are two images that appear in phase, but at different distances from each other on the same image plane, creating an optical illusion similar to the effect of a lens or prism. Definition: Two images are said to be anaglyphic if they appear in phase, but at different distances from each other on the same image plane. This occurs when the image plane and the distance between the images are not aligned perfectly, resulting in the illusion of parallel planes.