Enhancement of viewing angle with homogenized brightness for autostereoscopic display with lens-based directional backlight

[Paper] Autostereoscopic Displays with Time-multiplexed Directional Backlight Using Curved Lens Arrays

“…proposed a method to place a large aperture lens to reduce aberration [21] . However, two layers of Fresnel lenses used in this display system not only requires heavy optical calculation, but also produces stray light causing crosstalk.…”

“…In order to solve this problem, Mukai et al have proposed a method to place a large aperture lens to reduce aberration as shown inFig. 2[21] . Mirrors placed between the backlightand the lens array to prevent intrusion of light from adjacent segments further reduce crosstalk.…”

P‐72: An Autostereoscopic Display with a Deep Viewing Zone Using Time‐Multiplexed Directional Backlight

“…Though directionality of light rays in the depth direction using of a large aperture lens can be realized by mechanical control of light sources or filters [14,15], it is not a practical solution for general use. The viewing zone in depth direction can be expanded electronically by using a lens array as shown in Figure 1 [16][17][18][19][20].…”

Autostereoscopic display based on time‐multiplexed parallax barrier with adaptive time‐division

“…The drawback of this method is the fixed viewing zone. To enlarge the viewing zone, directionality of backlight has to be controlled to follow the motion of the viewer, which requires thick optical systems …”

“…To enlarge the viewing zone, directionality of backlight has to be controlled to follow the motion of the viewer, which requires thick optical systems. [4][5][6][7][8][9][10] The other way to realize full-resolution autostereoscopy is time-division duplexing parallax barrier, which is attainable with thin optics. 11,12 The whole information of the stereo pair is divided into two frames by resolution, where one frame shows half of the resolution of each view as usual and the next frame shows the other half by shifting the phases of both the barrier pattern and the image pattern.…”