| 摘要 |
PURPOSE:To obtain a 360 deg. visual area by forming a master hologram above an object while a holography photosensitive material is made to face to the object, and by obtaining a reproduced image of the master hologram by reference light at this time and reproducing light of torus-shaped luminous flux. CONSTITUTION:A holography photosensitive material is positioned, facing to an object 1, above the object 1 or where the entire circumference of the object 1 can be seen surrounding the external circumference, and reference light and illumination light 3 are supplied to manufacture a master hologram 4. The reference light 2 at the time of the manufacture and reproducing light 5 of torus-shaped luminous flux from the opposite direction are made incident to the hologram 4 to obtain a reproduced image 6 of the master hologram. At the opposite position to the master hologram 4, a pholography photosensitive material is set and irradiated with reference light 8 to record the reproduced image 6 of the master hologram, thus manufacturing a white-light reproduced hologram 9. Then, white reproducing light 10 from the opposite direction to the reference light 8 is made incident to it to obtain a reproduced image 11, so that observation is performed from visual points 12 over the entire circumference centering on a center axis. |
