| 摘要 |
PURPOSE: To obtain a 3-dimensional image display device in which a 3-dimensional image is displayed with a simple configuration and convergence of plural projection units is adjusted with high accuracy in a short time. CONSTITUTION: Green CRT projection tubes 13G1, 13G2 are arranged to left and right of a screen to display left and right eye image in a projector 12 and a red CRT projection tube 13R for adjustment of convergence is arranged in the middle. Polarization filters 14a, 14b provided to each front side of the CRT projection tubes 13G1, 13G2, a three-throw changeover switch 15 of 2-input and 1-output and a convergence adjustment video signal source 16 are built in the projector 12. The convergence adjustment video signal source 16 generates a video signal of an image (e.g. cross hatch pattern) suitable for convergence adjustment. |
