| 摘要 |
PROBLEM TO BE SOLVED: To provide a hologram forming method which uses a simple method to form a hologram excellent in design property and security performance and producing a satisfactory third dimensional effect like a real object, the hologram and a security medium using the hologram. SOLUTION: This method for forming a hologram to record an original image as an interference pattern on a predetermined recording surface by calculation using a computer, includes: a step of defining an original image comprised of a three-dimensional image, a hologram recording surface to record the original image, and reference light to be irradiated to the hologram recording surface; a step of defining a plurality of calculation points on the hologram recording surface and calculating the strength of an interference wave formed by object light emitted from each object and the reference light with respect to each of the calculation points; and a step of forming a physical interference pattern on a medium in accordance with the strength distribution of the interference wave obtained on the recording surface in the calculation step, wherein in defining the original image, the shortest portion of the three-dimensional image is arranged in the vicinity of the hologram recording surface. COPYRIGHT: (C)2010,JPO&INPIT |
