Patent ID: 8016428
Filing Date: 2011-09-13
Classification: G02B,G03B,H04N

Abstract:
1. A 2-dimensional image display device, comprising: at least one laser light source; a beam scan unit for converting an emission beam from said laser light source into a 2-dimensional light while scanning the emission beam at least in a 1-dimensional direction; a spatial light modulation element for spatially modulating the light scanned by said beam scan unit; and a light diffusion member disposed between said beam scan unit and said spatial light modulation element for diffusing the 2-dimensional light emerging from said beam scan unit, wherein: said beam scan unit includes a 2-dimensional scanning portion for scanning the emission beam from said laser light source in a first direction and a second direction normal to the first direction; and said 2-dimensional scanning portion cyclically scans the light beam incident on said light diffusion member at a frequency at which a ratio of a scan frequency in the first direction to a scan frequency in the second direction is a ratio of integers prime to each other.