| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a video display device using a large liquid crystal display that performs a reliable large screen display by extending the life of an incidence polarizer and enabling the replacement of a light source. <P>SOLUTION: The video display device includes the light source 1 for emitting light, a polarization conversion element 4 for converting the light emitted from the light source into a predetermined polarization component, an optical shaping part 7 for sharing the polarized light to a predetermined rectangular size, an illumination part 8 for enlargingly projecting the rectangular light, a Fresnel lens 9 for converting the direction of the rectangular light enlargingly projected by the illumination part, a diffusion part 10 for diffusing the outgoing light, and a light modulation part 12 for modulating the light from the diffusion part. <P>COPYRIGHT: (C)2009,JPO&INPIT |
