The two scanners are connected by scanning optics with a high numerical aperture (NA) and their two rotation axes are effectively placed on the common plane. The former is driven at 240 Hz with a 60-degree maximum optical scanning angle and rotates an image around the horizontal axis, whereas the latter is driven at 12 Hz with an 80-degree maximum optical scanning angle and rotates an image around the vertical axis. This system was implemented by designing a high-speed wide-angle dual-axis scanner comprising two different single-axis scanners, namely a resonance scanner and galvanometer scanner. The obtained results were consistent with the experimental results. We analyzed the observation characteristics within the VZ using WDF. The proposed display provides undistorted content regardless of change in the observer viewing distance within the VZ. In this study, we propose a display in which a full-parallax image is formed inside a ball lens with spherical symmetry.

The proposed system and WDF analysis of VZ will be helpful to evaluate the characteristics of the multiview system. This scanner comprises two single-axis scanners connected by high numerical-aperture scanning optics. For the experiment, we implemented a full-parallax multiview display with spherical symmetry and designed a high-speed wide-angle dual-axis scanner. Specifically, the changes in the contents are experimentally evaluated at different viewing distances to validate our expectation.

In this study, we divided the viewing zone (VZ) into the sub-viewing zone and integrated viewing zone according to the number of views of the observer. It is helpful to understand this phenomenon using the Wigner distribution function (WDF). In a horizontal parallax-only multiview display the content is distorted in the vertical direction as the observer changes the viewing distance. However, most of studies realize horizontal parallax-only multiview display. Particularly, a multiview display with temporal multiplexing offers advantages in terms of fewer restrictions for optical alignment and flexibility in forming view density. Three-dimensional displays are receiving considerable attention owing to their ability to deliver realistic content.

Display flex vertical