| 摘要 |
PURPOSE:To reduce an area of display on a screen and to enable the detection of longitudinal/lateral inclination by a method wherein images obtained from two rotating films arranged at right angles to each other are focused on a single screen in the same optical path. CONSTITUTION:A light from a light source 16 located in the dome 14b of a case 14 is reflected in the direction of a longitudinally-inclining rotating film 12, and the light transmitted through the film 12 is reflected by a half mirror 17 and then is condensed by a convex lens 18 and focused on a screen 17 having the scale marks of angles of inclination. On the other hand, a laterally-inclining rotating film 20 is rotated as a car body inclines laterally, and a light from a light source 23 is focused, after transmitted through the film 20, on the screen 19 via the mirror 17 and the lens 18. Accordingly, a user can discriminate the longitudinal and lateral inclinations from each other according to the colors of an arrow displayed on the screen 19. |
