Viewing zones in three-dimensional imaging systems based on lenticular, parallax-barrier, and microlens-array plates

Abstract

The viewing zone of autostereoscopic imaging systems that use lenticular, parallax-barrier, and microlens-array plates as the viewing-zone-forming optics is analyzed in order to verify the image-quality differences between different locations of the zone. The viewing zone consists of many subzones. The images seen at most of these subzones are composed of at least one image strip selected from the total number of different view images displayed. These different view images are not mixed but patched to form a complete image. This image patching deteriorates the quality of the image seen at different subzones. We attempt to quantify the quality of the image seen at these viewing subzones by taking the inverse of the number of different view images patched together at different subzones. Although the combined viewing zone can be extended to almost all of the front space of the imaging system, in reality it is limited mainly by the image quality.

Rapid fabrication of cylindrical microlens array by shaped femtosecond laser direct writing

“…Microlens arrays have a wide range of applications such as display and imaging [7], wavefront detection [8], waveguide coupling [9], and beam shaping and steering [10]. There are many techniques that have been used to process microlens array, consisting of photoresist reflow [11], droplet injection [12], and deposition of microsphere monolayers [13].…”

Synthetic content generation for auto-stereoscopic displays

“…Viewing zone of auto-stereoscopic 3D is mainly determined by the position of the RGB-stripe sub-pixels structure [24] and the optical elements which control light directions. If the objects' parallax is fixed, their stereoscopic depth is proportional to the viewing distance, which is related to the focal length of lenticular lens [29]. Thus, different considerations of these two parameters significantly affect the design of the device.…”

Autostereoscopic display based on multi-layer lenticular lens

“…According to the principle of the stereo vision [8,9], if the parallax of an object is fixed, its stereoscopic depth is proportional to the viewing distance. While, the optimum viewing distance of the autostereoscopic display is related with the focal length of the lenticular lens [10]. Therefore, the stereoscopic depth increases as the focal length increases.…”