3D Light Field Display Research Articles

5-3: Image Quality Evaluation of Laser Projection Light Field 3D Display

5-3: Image Quality Evaluation of Laser Projection Light Field 3D Display

High brightness three-dimensional light field display based on the aspheric substrate Fresnel-lens-array with eccentric pupils

The brightness and viewing field of the reproductive three-dimensional (3D) image are crucial factors to realize a comfortable 3D perception for the light field display based on the liquid crystal device (LCD). To improve the illuminance of 3D image with sub-image-units with small aperture angles and enlarge the viewing field, the illuminance of the Fresnel-lens combining with the sub-images on LCD is analyzed and designed. Theoretical and experimental results show that the Fresnel-lens-array with eccentric pupil(FAEP) can address above problems. A 3D light field display based on LCD with FAEP and directional diffuser screen are used to reconstruct the target 3D field. 25 parallax sub-images are projected to the directional diffuser screen to verify the improvement of illuminance and viewing field. To reduce eccentric aberration introduced by eccentric pupil, a novel structure of Fresnel-lens-array is presented to reduce the aberration. The illuminance and viewing field are well promoted at the same time. 3D image with the high quality can be achieved.

P‐79: Maximizing the 2D Viewing Field of a Computational Two‐layer Light Field 3D Display

In this paper, we propose a method to extend the viewing field of a compressive light field display by optimizing the maximum viewing angle. The difference from existing work is the improvement in the overall visual effect of compressive light field display rather than only extending the viewing field region. Sliding window scanning and viewer detection are also used for determining the target region and optimizing the display. Experiments demonstrate that the proposed method provides a relatively desirable improvement for the whole visual effect of compressive light field display, especially for the performance in the non‐target display region.

P.54: Light Field Integral Display Using LCD and Eye Tracking Technique

AbstractAn approach to an adaptive light field integral display for a number of observers using eye tracking technology and multiple LCDs is investigated. Compared with the previous LCD‐based light field 3D display, the adaptive display with eye tracking system can provide 3D scenes with a larger scale and no image jumping.

Self‐calibration three‐dimensional light field display based on scalable multi‐LCDs

AbstractApproach to achieve self‐calibration three‐dimensional (3D) light field display is investigated in this paper. The proposed 3D light field display is constructed up on spliced multi‐LCDs, lens and diaphragm arrays, and directional diffuser. The light field imaging principle, hardware configuration, diffuser characteristic, and image reconstruction simulation are described and analyzed, respectively. Besides the light field imaging, a self‐calibration method is proposed to improve the imaging performance. An image sensor is deployed to capture calibration patterns projected onto and then reflected by the polymer dispersed liquid crystal film, which is attached to and shaped the diffuser. These calibration components are assembled with the display unit and can be switched between display mode and calibration mode. In the calibration mode, the imperfect imaging relations of optical components are captured and calibrated automatically. We demonstrate our design by implementing the prototype of proposed 3D light field display by using modified off‐the‐shelf products. The proposed approach successfully meets the requirement of real application on scalable configuration, fast calibration, large viewing angular range, and smooth motion parallax.

All-around holographic three-dimensional light field display

Technology for all-around holographic three-dimensional (3D) light field display is proposed in this paper. A plane mirror keeps rotating around the optical axis. At each angular position, the mirror-image's Fourier CGH of the target object is projected onto the mirror. The reflected CGH contributes a specific viewing angle range to the target object. Linking up all viewing angle ranges in the horizontal plane, all-around display can be realized via the “afterimage” effect. An all-around holographic 3D light field display is implemented experimentally here with a 60Hz SLM by introducing an observer tracking unit in the proposed display system.

59.2: Three Dimensional Floating Light‐Field Display Based on Spliced Multi‐LCDs

AbstractNovel approach to achieve touchable three dimensional (3D) light field display is investigated. Light field reconstruction principle, multi‐Liquid Crystal Displays (LCDs) spliced style configuration and diffuser characteristic are analyzed, respectively. The point‐to‐point mapping method in image aberration evaluation is proposed which is used not only in the evaluation of 3D imaging performance, but also to construct the distortion compensation for spliced sub‐images on multi‐LCDs. The calibrating method aims to achieve high performance 3D display with considering the system geometrical arrangement and diffuser characteristics. The touchable floating 3D scene displayed by the prototype can be observed with high image resolution and large continuous viewing area.