The scrolling color projection system which has lamp same period

摘要

In order to form the projection of the picture where the light beam which has plural scrolling color fields (5b) the lamp which in order to form operates pulse (4) and the color scanner (6, 8a, 8b and 8c, 9) it possesses, the display (1 and 3) irradiates and is formed by the aforementioned display, in order frequency of the aforementioned lamp, to be related with the frame rate of the aforementioned display in the scrolling color projection system which is formed, the system which is controlled. The interference pattern which is formed by controlling the aforementioned lamp frequency pertaining to the aforementioned frame rate, is controlled in order to be dispersed over some frame period, and over the entire height of the aforementioned indication. Especially, the aforementioned pattern is controlled in order for the aforementioned pattern not to be perceived to the eye of the human.