Abstract
Three-dimensional (3D) display technology has continuously been attracting public attention with the progress in today's 3D television and mature display technologies. The primary characteristics of conventional glasses-free autostereoscopic displays, such as spatial resolution, image depths, and viewing angle, are often limited due to the use of optical lenses or optical gratings. We present a 3D display using MEMS-scanning-mechanism-based light homogeneous emitting (LHE) approach and demonstrate that the display can directly generate an autostereoscopic 3D image without the need for optical lenses or gratings. The generated 3D image has the advantages of non-aberration and a high-definition spatial resolution, making it the first to exhibit animated 3D images with image depth of six meters. Our LHE 3D display approach can be used to generate a natural flat-panel 3D display with super long viewing distance and alternative real-time image update.
Highlights
Three-dimensional (3D) display technology has continuously been attracting public attention with the progress in today’s 3D television and mature display technologies
We propose an approach for displaying 3D images without using high-pixel-density flat display and optical lens arrays or optical gratings, automatically resolving the optical aberrations problems caused by lenses or gratings
Since we use a single-pixel beam to establish a basic unit of an light homogeneous emitting (LHE) multi-view 3D display, the MEMS scanning unit plays a role of fast projection optics by producing multi-view homogeneous emitting beams with a horizontal and vertical projection angle
Summary
Three-dimensional (3D) display technology has continuously been attracting public attention with the progress in today’s 3D television and mature display technologies. Autostereoscopic 3D displays[1,2,3], including direction-multiplexed and diffraction-based approaches using lenticular lenses, micro lens arrays, and optical gratings, do not require special viewing glasses or tracking devices[4,5,6,7] Their limitations, such as narrow viewing angle, low image quality, crosstalk, and shallow image depth, prevent their further promotion in a larger area of naked-eye 3D visualization and wider commercial use[8,9]. The aberration and field curvature are so large that the resolution of the 3D image used optical apparatus are far from the ideal results This is a common issue of naked-eye 3D display using binocular, multi-view lens, and multi grating methods. We propose an approach for displaying 3D images without using high-pixel-density flat display and optical lens arrays or optical gratings, automatically resolving the optical aberrations problems caused by lenses or gratings
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