An eye-tracked head-mounted display (ET-HMD) system is able to display virtual images as a classical headmounted display (HMD) does, while additionally tracking the gaze direction of the user. An HMD with fullyintegrated eyetracking capability offers multi-fold benefits, not only to fundamental scientific research but also to emerging applications of such technology. A key limitation of the state-of-the-art ET-HMD technology is the lack of compactness and portability. In this paper, we present an innovative design of a high resolution optical see-through ET-HMD system based on freeform optical technology. A prototype system is demonstrated, which offers a goggle-like compact form factor, non-obstructive see-through field of view, true high-definition image resolution for the virtual display, and better than 0.5 arc minute of angular resolution for the see-through view. We will demonstrate the application of the technology as an assistive and augmentative communication (AAC) device.
Conventional stereoscopic displays render 3D scenes from a single pair of 2D images at a fixed distance to the viewer.
Therefore conventional stereoscopic displays force an unnatural decoupling of the accommodation and convergence
cues, which may contribute to various visual artifacts and have significant effects on depth perception accuracy. In this
paper, we present the design and implementation of an optical see-through depth-fused multi-focal-plane binocular
stereoscopic display. The prototype is capable of rendering nearly-correct focus cues for a large volume of 3D objects
extending into a depth range from 0 to 3 diopters and a diagonal field of view of 40 degrees at a flicker-free speed. With
the optimized optical system including a freeform prism eyepiece and a see-through compensator, the prototype system
demonstrates high image quality while having minimal degradation to the see-through view.
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