Patent ID: 7940437
Filing Date: 2011-05-10
Classification: G03H

Abstract:
1. A method of fabricating a computer-generated hologram with amplitude information and phase information recorded on a given recording plane by computer-aided computation, the method comprising: a step of defining a given original image and a recording plane for recording said original image; a step of dividing said original image and said recording plane by a multiplicity of parallel sections into a multiplicity of linear areas in a horizontal direction, thereby defining said areas in such a way that areas of said original image have a one-to-one matching relation to areas of said recording plane; a step of periodically arranging on the multiplicity of areas of said original image a point or line segment light source array emitting light having a plurality of wavelengths in such a way that a wavelength of light emitted out of the multiplicity of areas varies periodically in a direction traversing the multiplicity of areas of said original image; a step of defining a multiplicity of computation points on the areas of said recording plane to compute the amplitude information and the phase information about object light on individual computation points, wherein said object light is synthetic light arriving from corresponding points of the areas of said original image or individual point or line segment light sources of said point or line segment light source array; and a step of recording on a recording medium amplitude information and phase information found on the individual computation points.