| 摘要 |
PROBLEM TO BE SOLVED: To provide a three-dimensional image display device in which sizes of a subject body can be measured at a desired position in a three-dimensional space. SOLUTION: In forming a three-dimensional image by projecting a subject body 10 in parallel on a projection surface to be shaded, three-dimensional rules for a desired position in a three-dimensional space are also projected in parallel on the projection surface to form a three-dimensional rule image. The three-dimensional rules are composed of three rules x, y, z which cross each other perpendicularly, and they are set to be supposed in the three- dimensional space. The three-dimensional rules are movable to a desired position in the three-dimensional space, and they are rotatable around each rule in the three-dimensional space. By reading a gauge in each rule, distance between desired two points on each rule can be measured, thereby sizes of the projected body 10 can be measured. |
