| 摘要 |
PROBLEM TO BE SOLVED: To provide a three-dimensional display device which uses a conventional two-dimensional picture display part to display a natural moving picture stereoscopic image which doesn't cause visual fatigue. SOLUTION: A two-dimensional display part 11 for display of a moving picture is provided, and a focal length varying element array 13 is provided which is provided with focal length varying elements 14a and 14b, of which the focal lengths can be electrically controlled, in the same number of positions as the number of pixels of the picture on the two-dimensional display part 11 and in the same arrangement, and the focal length of each focal length varying element is quickly controlled by a focal length control part 18. |
