| 摘要 |
PROBLEM TO BE SOLVED: To present a distortion-suppressed residual image by a presentation image using a residual-image effect.SOLUTION: A display control part 9 causes a light-emitting element to flash when a reflection mirror 4 is rotated and controls a light-emitting mode of the light-emitting element so as to display a presentation image on a display screen when the light-emitting element is turned on, thereby using a residual-image effect to generate a residual image by the presentation image. In this event, the display control part 9 controls variation of light-emitting modes of the light-emitting element so that a ratio of a size along a rotating direction of the reflection mirror to a height of the presentation image to be reflected by the reflection mirror increases with an increase in a shift angle of the image reflection direction relative to an image display direction. |
