| 摘要 |
PURPOSE:To execute a three-dimensional display easily and also at a low cost, by unifying in one body a convex or concave lens and a screen placed on its focusing surface, driving and displacing it, and simultaneously projecting a two-dimensional graphic form on the screen through the projector placed on the same plane. CONSTITUTION:A convex lens 13 which has been fixed to the sliders 3, 6 through the mounting frame 12, and a screen S which has been fixed to the sliders 3, 6 at its focal position perform a reciprocating motion in one body in the direction as indicated with an arrow through the motor M, the crank 1 and the rod 2. The trigger circuits T1-T4 operate and make the light source 7 emit a light beam, corresponding to a prescribed position of the screen through the microswitches SW1-SW4 which are turned on and off by the operation lever 10. The light beams which are projected in order from the projection lens 9 of each projector SP1-SP4 through each two-dimensional graphic form display plates K1-K4 become the parallel flux of light, and the images are formed in order on the screen S by the lens 13. Accordingly, a three-dimensional display can be executed easily and also at a low cost. |
