The hologram recorded with a hardened dichromatic gelatin platecan receive a diffractional effeciency of 80%. Illuminated by whitelight,it can reconstructe a three-dimensional clear and bright image.

• 用重铬酸盐明胶记录的全息图,可以达到80%25以上的衍射效率,用白光可以再现出清晰明亮的三维图象。