Light Fields for Near-eye Displays

The most important requirement to make any near-eye display successful is to provide a comfortable visual experience. This requirement has many boxes to check: having high resolution and wide field of view, being lightweight, having small form factor, and supporting focus cue. Like 3D TVs and movies, near-eye displays also need to solve the vergence and accommodation conflicts. In current Virtual Reality (VR) displays, the user fixates his focus on the fixed focal plane, and the disparity in the pre-processed content drives the eye to verge and creates a 3D sensation. This is particularly challenging for Augmented Reality (AR) as the virtual content needs to match the real-world object at arbitrary depth, and the eye needs to constantly switch its focus between the real and the virtual, and oftentimes causes a fatigue viewing. Using a light field display provides an opportunity to fix the problem; the extended Depth of Field (DoF) enables the virtual content to be displayed at the correct depth, allowing for a comfortable viewing experience. Additionally, unlike the conventional 2D displays, light field displays have the ability to check many boxes of these abovementioned requirements, and we will describe how to navigate the design space that uses light fields.

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Publication Date: 
Thursday, July 20, 2017
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