ELECTRONIC HOLOGRAPHY DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an electronic holography display device able to display a stereoscopic reproduction image free from omission without loosing vertical parallax when the image size of the stereoscopic reproduction image is enlarged using a plurality of spatial modulation elements.SOLUTION: An electronic holography display device 1 comprises: light emitting means 10; a plurality of polarization beam splitters 20; a plurality of spacial optical modulation elements 30 arranged with a predetermined interval between them and configured to modulate light perpendicularly made incident on them from the polarization beam splitters 20; an enlarging optical system 40; and a reducing optical system 50. The enlarging optical system 40 has a first lens array 41 and a second lens array 42. The reducing optical system 50 has a third lens 51 and a fourth lens 52. If the ratio of the interval between the spatial optical modulation element 30 with respect to the size of each spacial optical modulation element is k and the focal distance of the first lens is f, a=(k+2)f/(k+1), where a is the interval between each spacial optical modulation element 30 and the first lens array 41, is established.