Changes

Sharp images from out-of-focus display elements are depicted by synthesizing these light fields that correspond to virtual scenes located within the viewer’s natural accommodation range. [[Lanman]] and Luebke (2013) mentioned that “conventional displays are intended to emit light isotropically. In contrast, a light field display supports the control of tightly-clustered bundles of light rays, modulating radiance as a function of position and direction across its surface.”<ref name=”2”>Lanman, D. and Luebke, D. (2013). Near-Eye Light Field Displays. ACM Transactions on Graphics, 32(6)</ref><ref name=”3”></ref><ref name=”4”> Fattal, D. (2016). The ultimate guide to 3D technologies. Retrieved from https://thenextweb.com/insider/2016/04/23/guide-to-3d-tech/#</ref>

Sharp images from out-of-focus display elements are depicted by synthesizing these light fields that correspond to virtual scenes located within the viewer’s natural accommodation range. [[Lanman]] and Luebke (2013) mentioned that “conventional displays are intended to emit light isotropically. In contrast, a light field display supports the control of tightly-clustered bundles of light rays, modulating radiance as a function of position and direction across its surface.”<ref name=”2”>Lanman, D. and Luebke, D. (2013). Near-Eye Light Field Displays. ACM Transactions on Graphics, 32(6)</ref><ref name=”3”></ref><ref name=”4”> Fattal, D. (2016). The ultimate guide to 3D technologies. Retrieved from https://thenextweb.com/insider/2016/04/23/guide-to-3d-tech/#</ref>

There have been demonstrations that light field displays allow for small form factors of NEDs. This was made by placing a [[microlens array]] on a small screen close to the eye. In near-eye light field displays the image created appears to be floating outside the physical gadget enclose, and the observer can accommodate with a narrow range. However, the lens used in the studies have a tradeoff between achieved spatial resolution and the supported depth range <ref name=”2”></ref><ref name=”7”> Huang, Fu-Chung, Chen, K. and Wetzstein, G. (2015). The Light Field Stereoscope: Immersive Computer Graphics via Factored Near-Eye Light Field Displays with Focus Cues. ACM Transactions on Graphics, 34(4)</ref>. Another technique used to implement light field displays is to stack liquid crystal displays (LCDs). In this case, the image formation is multiplicative, allowing for correct or nearly-correct focus cues to be supported over larger depth ranges. Alternatively, it reduces the number of required display planes <ref name=”7”></ref>.

There have been demonstrations that light field displays allow for small form factors of NEDs. This was made by placing a [[microlens array]] on a small screen close to the eye. In near-eye light field displays the image created appears to be floating outside the physical gadget enclose, and the observer can accommodate with a narrow range. However, the lens used in the studies have a tradeoff between achieved spatial resolution and the supported depth range.<ref name=”2”></ref> Another technique used to implement light field displays is to stack liquid crystal displays (LCDs). In this case, the image formation is multiplicative, allowing for correct or nearly-correct focus cues to be supported over larger depth ranges. Alternatively, it reduces the number of required display planes.<ref name=”7”></ref>

Correct or nearly correct focus cues significantly improve stereoscopic correspondence matching. 3D shape perception becomes more veridical, and people can discriminate different depths better. Vergence and accommodation cues are neurally coupled in the human brain; it seems intuitive that displays supporting all depth cues improve visual comfort and performance in long-term experiences.<ref name=”7”></ref>

Correct or nearly correct focus cues significantly improve stereoscopic correspondence matching. 3D shape perception becomes more veridical, and people can discriminate different depths better. Vergence and accommodation cues are neurally coupled in the human brain; it seems intuitive that displays supporting all depth cues improve visual comfort and performance in long-term experiences.<ref name=”7”></ref>