| 摘要 |
An image display consisting of an image grid 1 having a plurality of successive strips of each image disposed in parallel relationship to each other, and a masking grid 2 having a plurality of parallel window strips through which the image strips of an image are visible, and different images are made visible by relative movement of the grids 1 ,2 includes means for aligning the strips of the respective grids. The display includes drive means for causing relative movement of the grids and control means for controlling the drive means to adjust the relative positions of the grids. Edge regions of the grids each have transparent and opaque areas and the control means includes sensor means, eg photocells 6,6', for detecting the amount of light, eg from LEDs 5,5', passing though superposed areas of the grids at specific locations, and comparator means for comparing the sensed light levels with predetermined reference levels. The display of images may include dwell periods to show discrete images, or be continuously changing to provide animation. The movable grid may be driven by a cam mechanism or a stepper motor.
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