Patent ID: 7630110
Filing Date: 2009-12-08
Classification: G03H

Abstract:
1. An interference fringe pattern recording apparatus which records an interference fringe pattern to display a three-dimensional hologram image by a reference wave irradiation, the apparatus comprising: a light modulation device in which a refractive index of each of a plurality of pixels is varied based on an electric field intensity of each of the plurality of pixels; a plurality of pixel electrodes provided on a surface of the light modulation device, and provided for each of the plurality of pixels; an electric field controller configured to configured to control a voltage to be applied to each of the plurality of the pixel electrodes, wherein the electric field controller stores, for each of the plurality of pixels, a corresponding relationship between a voltage true value and a gray-scale value of an interference fringe pattern, the electric field controller applies a first voltage having higher than a first voltage true value of a first pixel to a first pixel electrode provided for the first pixel, and applies a second voltage having lower than a second voltage true value of a second pixel to a second pixel electrode provided for the second pixel, which is adjacent to the first pixel electrode provided for the first pixel, the first voltage true value indicates the voltage true value corresponding to the gray-scale value of the interference fringe pattern corresponding to the first pixel, and the second voltage true value indicates the voltage true value corresponding to the gray-scale value of the interference fringe pattern corresponding to the second pixel, and the gray-scale value for the first pixel is a peak value of a gray-scale variation curve for the interference fringe pattern.