| 主权项 |
1. A system having an image production module adapted to generate two images with different content, a display module adapted to synchronously display the images and a visual aid to be worn by a viewer and allowing the viewer to view one of the images and block the other image and to switch between the images, as required, using the same visual aid, the visual aid including a pair of polarized lenses, each lens being divided into two sections of perpendicular polarity so that an image of one polarity can be viewed simultaneously through the glasses in one orientation and an image of another orientation can be viewed through the other sections in each lens, in another orientation, wherein the sections are divided horizontally so that a viewer can view different images by tilting the glasses up and down to look though with the top set of lenses or the bottom set of lenses. |
