Patent ID: 8220929
Filing Date: 2012-07-17
Classification: G02B,G06E

Abstract:
1. A three-dimensional image display apparatus comprising a light source and an optical system, the optical system including means for providing a plurality of pixels and generating a two-dimensional image by modulating light from the light source by the respective pixels and emitting a spatial frequency in the generated two-dimensional image along diffraction angles corresponding to a plurality of diffraction orders generated from the respective pixels, means for performing a Fourier transform on the spatial frequency in the two-dimensional image to generate a number of a Fourier transform images corresponding to the plurality of diffraction orders, means for selecting a Fourier transform image corresponding to a desired diffraction order among the number of Fourier transform images as generated corresponding to the plurality of diffraction orders, and means for forming a conjugate image of the Fourier transform image, the three-dimensional image display apparatus further comprising a semi-transmissive mirror configured to change a travelling direction of a light ray emitted from the optical system, and wherein the optical system is positioned outside a view angle of an observer.