Patent ID: 7046405
Filing Date: 2006-05-16
Classification: G03H

Abstract:
1. A process of fabricating a computer-generated hologram having interference fringes recorded on a given recording surface by computer-aided computation, which comprises steps of: defining 2 to K original images, a recording surface for recording the original images, and reference light with which the recording surface is irradiated and which corresponds to said 2 to K original images, and defining a multiplicity of sample light sources on each original image and defining a multiplicity of computation points on the recording surface, whereby for each computation point, the intensity of interference waves formed by object light coming from all or some of the sample light sources and reference light is so found by computation that interference fringes having the thus found intensity distribution are formed on the recording surface as a hologram for the K original images, wherein: process settings are such that spatial densities of sample light sources defined on at least two different original images differ from each other, wherein: a plurality of sections located parallel with one another at a given spacing are defined, and sample light sources arranged at a given spacing on a section line obtained by cutting the surface of the original image by each section are defined, so that the spatial density of the sample light sources is varied by varying a section-to-section spacing for each original image.