Photonic Displays in Augmented Reality

Basic Perception in Head-worn Augmented Reality Displays

Head-worn displays have been an integral part of augmented reality since the inception of the field. However, due to numerous difficulties with designing using such unique hardware, the perceptual capabilities of users suffer when looking at either the virtual or real portions of the augmented reality. We discuss the perceptual background and a series of experiments – in the literature and in o...

Frames of reference in mobile augmented reality displays.

In 3 experiments, the authors investigated spatial updating in augmented reality environments. Participants learned locations of virtual objects on the physical floor. They were turned to appropriate facing directions while blindfolded before making pointing judgments (e.g., "Imagine you are facing X. Point to Y"). Experiments manipulated the angular difference between the learning heading and ...

Chapter 1 WIRELESS DISPLAYS IN EDUCATIONAL AUGMENTED REALITY APPLICATIONS

Multiple Head Mounted Displays in Virtual and Augmented Reality Applications

With the recent introduction of low cost head mounted displays (HMDs), prices of HMD-based virtual reality setups dropped considerably. In various application areas personal head mounted displays can be utilized for groups of users to deliver different context sensitive information to individual users. We present a hardware setup that allows attaching 12 or more HMDs to a single PC. Finally we ...

Submillisecond-response nematic liquid crystals for augmented reality displays

We report a new nematic liquid crystal (LC) mixture with an ultra-low rotational viscosity (γ1 = 53.4 mPas @ 35°C), relatively high birefringence (Δn ≈0.15), and moderate dielectric anisotropy (Δε = −2.80 @ 35°C). When employed in a liquid-crystal-on-silicon (LCoS) projector with RGB light-emitting diodes (LEDs), a sub-millisecond response time is obtained without the need for complicated overd...