Glasses-free 3D projection system

Abstract

The invention relates to a naked-eye 3D projection system, which includes a 3D projector and a projection screen. The 3D projector includes several projection lenses. The anisotropic directional scattering projection screen has simple structure, low cost, and low requirements for playing hardware; the film source includes several sub-film sources, and the sub-film sources between rows are arranged in a progressive form, and the arrangement of the sub-film sources is m Rows n columns, the progressive distance between sub-film sources in two adjacent rows is 1 / m of the horizontal length of a single sub-film source, the projection lens corresponds to the sub-film source one by one, and the projection lens puts the sub-film source on the projection screen Overlapping projection or overlap on top and bottom sides, and the projections are arranged progressively in proportion to the left, right, and horizontal directions. The 3D images presented have the advantages of large viewing angle, high resolution, small crosstalk, and strong three-dimensional effect. They can be watched by multiple people at the same time. Presentation of 3D dynamic / still images with naked eyes.

Description

technical field [0001] The invention relates to a 3D projection system, which is suitable for large-angle, multi-directional, multi-person simultaneous observation under the naked eye state, and specifically relates to a naked eye 3D projection system. Background technique [0002] In daily life, people use both eyes to identify objects in three-dimensional space. When identifying an object, because there is a certain distance between the eyes, this distance makes the left and right eyes enter the left and right eyes when observing the object. Different, including differences in angles and perspectives, reflected in the brain will produce "stereoscopic vision", and the combination of two pictures will produce a three-dimensional sense, so that the front and back relationship of the object can be judged. The difference between the images formed on the retinas of the left and right eyes is binocular parallax, and the generation of parallax plays a very important role in the fo...

AI Technical Summary

Problems solved by technology

The projection system uses a projector array to provide a projection source. To achieve a large-angle viewing effect, multiple projectors are required to simultaneously drive multiple projectors to play a three-dimensional picture or a three-dimensional image. The required hardware and related The matching software requirements are very high, the production cost is high, and the number of columns of the projection array is limited. The pitch of the cylindrical lens is a positive integer multiple of the pixels of the projection screen. It also requires a precise relationship between the pixels of the projected screen and the cylindrical lens array, and The distance between the projectors is double interpupillary distance, which limits the fluency of the three-dimensional image. If this technology is used to expand the viewing angle, there will be large skipping and crosstalk phenomena, and it will be difficult to achieve real wide-angle viewing with naked eyes.

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