Hyun-Eui Kim

360-degree tabletop electronic holographic display

We demonstrate a tabletop holographic display system for simultaneously serving continuous parallax 3.2-inch 360-degree three-dimensional holographic image content to multiple observers at a 45-degree oblique viewing circumference. To achieve this, localized viewing windows are to be seamlessly generated on the 360-degree viewing circumference. In the proposed system, four synchronized high-speed digital micro-mirror displays are optically configured to comprise a single 2 by 2 multi-vision panel that enables size enlargement and time-division-multiplexing of holographic image content. Also, a specially designed optical image delivery sub-system that is composed of parabolic mirrors and an aspheric lens is designed as an essential part for achieving an enlarged 3.2-inch holographic image and a large 45-degree oblique viewing angle without visual distortion.

Extended viewing-angle holographic display with optical fiber arrays backlight

We present an extended viewing angle holographic three-dimensional display system using optical fiber arrays backlight and a pupil-tracking technique. One of the limitations in implementing a wide viewing-angle holographic three dimensional display is the restrictive space-bandwidth product of the spatial light modulator. In our proposed method, the optical fiber arrays backlight with pupil-tracking system enables to enlarge the static viewing angle of the holographic reconstruction using only one spatial light modulator.

Large-scale color holographic display capable of steering view window

We present optical fiber based large-scale color holographic three-dimensional display using a pupil tracking technique for wide viewing angle display applications. One of the limitations in implementing a large-scale holographic three-dimensional display is the restrictive space-bandwidth product of the spatial light modulator. In our proposed method, motor control system for steering optical fibers as a light guide and pupil tracking system are used to overcome the limitation of space-bandwidth product by steering the view window according to a position of the pupil of the observer. The proposed method employing the holographic stereogram in order to deliver two holographic patterns of different perspectives of a 3D scene to both eyes of the observer, which successfully provides both of the accommodation and binocular disparity.