Research on the naked eye 3D printing technology2
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When people observe objects, the three-dimensionality is naturally generated because there is a certain distance between the two eyes of the person. The left and right eyes observe the objects from different angles and form visual differences in the light and constitute various images. Reflected in the brain, it produces a sense of distance and three-dimensional. The principle of 3D printing technology is to use this parallax of the human eye. The cylindrical lens lenticular printing technology uses the lenticular lens grating's refracting image separation function to separate the light of the left and right eye images that are staggered on the plane, so that the viewer does not need to wear auxiliary equipment, the left eye only sees the left eye image, and the right eye only looks To the right eye image, so as to achieve a three-dimensional display effect, as shown in Figure 3. Microlens lenticular printing technology is to form the microlens array by arranging the same tiny convex lenses on the substrate in a certain cycle and shape, thereby effectively recording the full true image. The optical properties are the synthesis of the single microlenses, as shown in the figure.