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US 11,448,952 B2Granted
Screen and projection system
AssigneeAppotronics Corporation Limited
InventorsLin Wang, Fei Hu, Wei Sun, Yi Li
Life of this patent
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AssigneeAppotronics Corporation Limited
InventorsLin Wang, Fei Hu, Wei Sun, Yi Li
Estimating the term…
A screen comprises the following layers sequentially stacked from an incident side of projected light rays: a micro-lens layer, a transparent matrix layer, a total internal reflection layer, and a light-absorbing layer. The light-absorbing layer absorbs light passing through the micro-lens layer, the transparent matrix layer, and the total internal reflection layer. The micro-lens layer comprises a plurality of micro-lens units. The total internal reflection layer comprises a plurality of microstructure units. The microstructure unit has a lower first flat surface and an upper second flat surface. The first flat surface intersects the second flat surface. The plurality of microstructure units forms a serrated structure. The micro-lens units and the microstructure units are at least partially arranged in an alternating manner. The projected light rays converged toward the first flat surface exit after being totally internally reflected by the first flat surface and the second flat surface sequentially.
A screen, which is capable of reflecting projection light rays from a projector to a field of view of a viewer, wherein the screen comprises a microlens layer and a total internal reflection layer which are sequentially stacked from an incident side of the projection light rays,
A projection system, comprising a projector and a screen, which is capable of reflecting projection light rays from a projector to a field of view of a viewer, wherein the screen comprises a microlens layer and a total internal reflection layer which are sequentially stacked from an incident side of the projection light rays,
Dependencies are inferred from the claim text.