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Holoflex: A Flexible Smartphone With a Holographic Display

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The HoloFlex holographic bendable smartphone.

Researchers at Queen's University have developed a flexible smartphone with a holographic lightfield display.

Credit: The Human Media Lab/Queens University

Queen's University researchers have developed the HoloFlex, a flexible smartphone equipped with a holographic lightfield display that can simultaneously project glasses-free three-dimensional (3D) images to multiple users.

HoloFlex runs Android Lollipop, includes a full high-definition (HD) screen, and is powered by a 1.5GHz Qualcomm Snapdragon 810 processor with a dedicated graphical-processing unit and 2GB of random access memory. The display is based on a flexible organic light-emitting diode (FOLED) screen with a resolution of 1920 by 1080 pixels and a touch layer. On top of that is a 3D-printed flexible lens array consisting of 16,640 half-dome-shaped droplets in a 160-by-104 hexagonal matrix. Each lens projects the 12-pixel-wide circular area directly beneath it out into space, and each of those approximately 80-pixel image blocks contains information about the entire scene from a virtual camera position that is unique to the position of the lens.

HoloFlex can transform software models into lightfield display-based holograms, resulting in images that have depth, exhibit motion parallax, and can be viewed from multiple perspectives by multiple users.

The left side of the device is rigid, while the rest of it acts like a spring, providing passive haptic feedback for intuitive control over the z-dimension.

The researchers will present the HoloFlex this week at the ACM CHI 2016 conference in San Jose, CA.

From IEEE Spectrum
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