Abstract
Natural three-dimensional (3D) images, perceived as real objects in front of the viewer, can be displayed by faithfully reproducing light ray information. However, 3D images with sufficient characteristics for practical use cannot be displayed using conventional technologies because highly accurate reproduction of numerous light rays is required. We propose a novel full-parallax light field 3D display method named ‘Aktina Vision’, which includes a special top-hat diffusing screen with a narrow diffusion angle and an optical system for reproducing high-density light rays. Our prototype system reproduces over 100,000,000 light rays at angle intervals of less than 1° and optimally diffuses light rays with the top-hat diffusing screen. Thus, for the first time, light field 3D image reproduction with a maximum spatial resolution of approximately 330,000 pixels, which is near standard-definition television resolution and three times that of conventional light field display using a lens array, is achieved.
Highlights
Natural three-dimensional (3D) images, perceived as real objects in front of the viewer, can be displayed by faithfully reproducing light ray information
Distortions occur in the displayed images when observed at a different distance other than the designed viewing distance because the light rays are widely diffused in the vertical direction and optical images are not formed in the space
We propose a full-parallax light field display method, named ‘Aktina Vision’, which consists of a 3D screen using a special diffusing screen with isotropic narrow diffusion characteristics and a display optical system for projecting high-density light rays
Summary
Natural three-dimensional (3D) images, perceived as real objects in front of the viewer, can be displayed by faithfully reproducing light ray information. Distortions occur in the displayed images when observed at a different distance other than the designed viewing distance because the light rays are widely diffused in the vertical direction and optical images are not formed in the space. These two issues are not solved even when the head tracking technique[11,13] is used. The maximum resolution of the 3D images using these methods is approximately 100,000 pixels[19,23,24], and a higher resolution has not yet been realised
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