Now, numerous types of 3D display have been developed or under-developing. However, most of them present
stereoscopic images in a space with limited distance from the physical screen. A display which can deliver stereoscopic
images in the free space and satisfies the touching sense of viewers is always expected. As a result, we proposed a
floating image device with auto-stereoscopic display and viewer tracking technology. The key technology includes that
the optical projected lenses with wide view angle which exceeds 30 degrees, the optimized parameters of 2 views
auto-stereoscopic display which fits the viewing specifications and the viewer tracking technology which can update the
corresponding image of the particular view angle in real time. The novel display is the other choice for consumers
especially for product exhibition, user interface of kiosk and a kind of apparatus of video conference, etc.
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