| 摘要 |
PROBLEM TO BE SOLVED: To realize high image quality and high reliability in a projection type video display device.SOLUTION: In this video display device, color purity is improved by cutting a yellow component from red and green colors, and a reflection-type attenuation filter which reflects a light in a green optical path is inserted to enhance a balance of light energy of the three colors. An optical phase difference compensation plate is further provided in the green optical path so as to enhance contrast performance, and at the same time, two optical parts to which ultraviolet reflection coating is applied are arranged in a blue optical path, and an ultraviolet absorbing filter is provided on an incident side of a blue liquid crystal panel in order to prolong the life of an image display element. |
