| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-quality image display device having superior brightness for gradation display and superior visibility by improving the dependence on visual sense. SOLUTION: The image display device is equipped with a light paralleling element 12 for converting nonpolarized diverging light from a light source (backlight) 10 into a parallel light, a polarization separation element 14 to extract only the polarized component in one direction of the light from the element 12, a liquid crystal light-modulating element array 16 to modulate the light from the polarization separating element 14 into light of respective colors, an a light diffusing body 18 to diffuse the modulated image light from the liquid crystal light-modulating element array 16. For the light paralleling element 12, a lens array, reflection mirror, prism sheet or the like is used, and as to the light-diffusing body 18, a beads black screen, GRIN (gradient index) diffuser, GRIN particle diffuser or the like is used. |
