HOLOGRAM AND ITS PHOTOGRAPHING METHOD

摘要

A security hologram and its photographing method are provided with properties of a reproduced image with the sufficient feeling of three-dimensional shape in its longitudinal and lateral directions, difficulty in forging and easy identification of a forged article. The hologram is made of a reflective and volume type hologram (H2), wherein an object image (P) and micro-reflective images (F, Q') of a light source at least either in front of the images or behind them are reproducibly recorded and a relative position of the object image (P) and the micro-reflective images (F, Q') of the light source is variably observed as an observation position (E) is moved along a surface of the hologram.