| 摘要 |
PROBLEM TO BE SOLVED: To provide a projector for improving contrast of a liquid crystal panel by adjusting illuminating direction. SOLUTION: Distances D1 and D1' from the center point O of a second lens array 21e to the outer circumference in a first characteristic up, down, right, and left directions are larger than a distance D2 from the center point O of a second lens array 21e to the outer circumference in a second characteristic direction tilted at an angle of 45°. Therefore, as for the high contrast direction of a first liquid crystal panel 25a, an illumination light can be made incident on the first liquid crystal panel 25a at a comparatively large incident angle, and as for the low contrast direction of the first liquid crystal panel 25a, an illumination light can be made incident on the first liquid crystal panel 25a at a comparatively small incident angle. Thereby, the contrast of an image projected by a projection lens 29 on a screen can be improved as a whole. COPYRIGHT: (C)2009,JPO&INPIT
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