裸眼3d技术-论文外文翻译

裸眼3d技术-论文外文翻译内容摘要：

cular angle. They were also able to manipulate light intensity such that two distinctly different images could be shown from the same screen—one to a viewer39。 s left eye and a second image to the right eye. Seeing the two images together creates a sense of depth that the brain perceives as 3D, without the help of special eyeglass lenses. (Click here to see an interactive graphic illustrating the principle of autostereoscopic display created by New York University puter science professor Ken Perlin.) The lucius prism array described in the paper is a fourcentimeter square, yet the researchers estimate the size could be enlarged to that of a smartphone screen or even a video monitor. The prism array was made from photocurable polyurethane acrylate (PUA), although any kind of transparent polymer could be used, says Hyunsik Yoon, a professor at Seoul National University39。 s School of Chemical and Biological Engineering in South Korea and a researcher on the project. Another approach to glassesfree 3D has been to generate 3D holograms. Researchers at the University of Arizona39。 s College of Optical Sciences (OSC) in Tucson, Ariz., last year reported developing technology that can write and rewrite such holograms onto a photorefractive polymer every two seconds using a laser. Whereas fluid motion via such holographic images remains elusive, OSC39。 s pulsed laser can write information into an array of holographic pixels, or hogels, that convey threedimensional depth by showing different sides of the object depending on the viewer39。 s angle to the hologram. It can be used to provide full parallax—viewers can move not only from side to side but also up and down to see different perspectives, according to Nasser Peyghambarian, chair of photonics and lasers at OSC. Yoon notes the distinction between his work and that of OSC: The work done by Peyghambarian is about the hologramtype autostereoscopic 3D display. Although it could be the ultimate goal of 3D displays, our optical film can be used and is applicable for mercialized LCD and OLED devices by just putting the film on the display panel. The 3D display39。 s resolution can be improved by shadow mask technology already developed in the OLED industry to deposit materials on selective areas, Yoon adds. One criticism of shadow mask evaporation, however, is that it does not scale well to largesize screens and is not conducive to highvolume manufacturing, although this is not likely an issue yet for Yoon and his colleagues (pdf). In addition to research done by Yoon and OSC, 3M39。 s Optical Systems Division announced in 2020 that it had developed a 3D optical film for handheld devices that enabled autostereoscopic 3D viewing on mobile phone, gaming and other handheld devices without the need for glasses. Seoul National University39。 s work differs from 3M39。 s in that the 3M film cannot be used for OLED devices, which have no backlight unit, Yoon says. Smartphone makers are already bringing 3D handsets to market worldwide. The HTC EVO 3D and LG Optimus 3D feature 11centimeter displays that use parallax barrier screens to provide a 3D effect. Such a screen is made with precision slits that allow each eye to see a different set of pixels. When placed in front of an LCD, the screen creates a sense of depth using the parallax effect (each eye views an object from a slightly different angle). Unfortuna。