A study of optimal viewing distance in a parallax barrier 3D display

Abstract

The optimal viewing distance was proposed as a parameter for designing a parallax barrier 3D display. It can be designed based on simple geometric method and by considering the pitches of image display pixels and parallax barrier, or even including the aperture ratios of the image display pixels and parallax barrier. It can be analyzed by using ray tracing method. By considering the optical refraction index of the cover glass, the angular behavior of the system becomes more realistic; however, the geometric method is difficult to be used. We propose a revised method for estimating the view distance and angular behavior. In this paper, we have demonstrated a designated eye position (DEP) for each view and shown that multiple DEPs make a circular curve around the center of the display. We prove the new concept by comparing the optical ray tracing calculations and optical measurement.

P‐188L: Late‐News Poster: Design for a Flexible Autostereoscopic Display with Different Radius of Curvature

“…show the top view of a two-view flexible AS3D design by geometric method, and the flexible display is curved from the flat one with the same parameters, including display size (L), sub-pixel pitch (P D ), barrier pitch (P B ), the pixel aperture ratio (a D ), the barrier aperture ratio (a B ), and the distance between display and barrier, defined as f, which is derived from Z DEP [3][4] as shown in figure 1(a). Part of a cylinder-shaped display of radius of curvature (R) is used as designed flexible display with interlaced pixels on it.…”

Investigation of Autostereoscopic Displays Based on Various Display Technologies

“…In Figure 2b, the parallax barrier is inserted between the display panel and the backlight to make the barrier invisible, so people would not be aware of the existence of black strips. The details of the optical design can be found in Huang's article [15]. The method can be modified into multiple views by changing the pitch of the barrier.…”

Widening Viewing Angles of Automultiscopic Displays Using Refractive Inserts

“…Methods that exploit time division multiplexing have several drawbacks including low brightness, mechanical noise, bulky devices, short endurance and high cost. There has been some effort towards using transparent media for autostereoscopic displays [6,20,51] but they do not evaluate the idea or provide much analysis. They also do not propose solutions for rendering using such displays thereby limiting their applicability for Virtual Reality applications.…”