Patent ID: 9001401
Filing Date: 2015-04-07
Classification: G03H

Abstract:
1. A method for fabricating a multi-image type hologram, said method comprising: dividing a hologram recording material into a plurality of sub-areas such that different objects to be displayed on different images are holographically recorded in the respective sub-areas, using reference light having an identical angle of incidence, thereby making a first-stage hologram; and simultaneously reconstructing images of said objects recorded in the sub-areas from the recorded first-stage hologram, such that a material for recording a second-stage hologram is located near the reconstructed object images to make a reflection or transmission type volume hologram, wherein the first-stage hologram and the second-stage hologram are recorded using a laser light having a same wavelength, wherein said objects recorded in the respective sub-areas of the recorded first-stage hologram are reconstructed using a laser light having a single wavelength that is a same as used for recording the objects, wherein said simultaneously reconstructed images are recorded in said second-stage hologram, and wherein an image of at least one object changes over to an image of at least one other object depending on a viewing direction.