Patent ID: 7054044
Filing Date: 2006-05-30
Classification: G02B,G02F,G03H

Abstract:
1. A process for fabricating a computer-generated hologram by defining a range which diffraction light obtained by diffraction of incident light leaves, determining a hologram phase distribution for allowing said diffraction light to leave the defined range, quantizing a determined phase distribution to find a quantized depth of a hologram relief, forming a relief on a substrate by photoetching on the basis of a found quantized depth to obtain a relief pattern, and patterning a resin layer using said relief pattern to form a hologram relief on a surface of said resin layer; wherein said phase distribution is determined per minute elemental hologram piece forming the hologram, and said relief is formed on the basis of a phase distribution obtained by repeatedly arranging a phase distribution of said elemental hologram piece across said substrate.