To obtain a large-sized hologram capable of realizing full color reproduction in a required visual area by the use of a monochrome laser by individually exposing plural holograms, and then integrally arranging plural holograms through a connection means so as to hold two-dimensional spread.
Plural holograms 30 are individually exposed and then integrally arranged through the connection means so as to hold the two-dimensional spread. For example, in the case of dividing the hologram 30 into two up and down, the size of a diffusing body 24 required to satisfy the visual area of the hologram 30 after division is the size large enough to fit the outside of an area obtained by linking the viewing points 125a and 125b at both ends of the visual area 125 with both ends 30a and 30b of the hologram 30. The hologram 30 at a lower part is installed so that positional relation between a photosensitive member and the diffusing body 24 may keep the positional relation between the hologram 30 and the diffusing body 24 symmetrically with respect to a symmetry axis 70 linking a viewing point β in the center of the visual area 125 and the end 30b of the hologram 30.
NISHII KATSUMASA
KANDA TOMOYUKI
TAKADA KENICHIRO
MATSUMOTO TORU
