Cinema 3D: New Movie Screen Allows for Glasses-Free 3-D

Cinema 3D: New Movie Screen Allows for Glasses-Free 3-D
A new prototype display could show 3-D movies to any seat in a theater, with no eyewear required. Image: Christine Daniloff/MIT

A team of scientists has discovered a display that allows the audience to watch 3Dmovies without extra eyewear. This novel demonstration is done by scientists from MIT’s Computer Science and Artificial Intelligence Lab (CSAIL) and Israel’s Weizmann Institute of Science. They named it as Cinema 3D. Although, Current glasses-free 3D approaches has high-resolution requirements that they are totally unrealistic.

This technology uses a special array of lenses and mirrors to authorize viewers to watch a 3D movie from any seat in the theatre. According to researchers, this is the first ever technical approach that allows for glasses-free 3-D on a large scale. This allows viewers from a different area of an auditorium to see images of constant high resolution.

Traditional TV set’s method uses slit’s sequence in front of the screen. That sequence allows each eye to see a different set of pixels by producing a fake sense of depth. But because parallax barriers have to be at a constant distance from the viewer, this approach isn’t practical for larger spaces like theaters that have viewers at different angles and distances.

Working of cinema 3D:

It encodes multiple parallax barriers in one display like each viewer sees a parallax barrier altered to their position. Those range of views is then copied beyond the theater by a sequence of lenses and mirrors in special optics system.

Gordon Wetzstein, an assistant professor of electrical engineering at Stanford University, said, “With a 3-D TV, you have to account for people moving around to watch from different angles. It means that you have to divide up a limited number of pixels to be projected so that the viewer sees the image from wherever they are. The theater has a different set up in which every person sits in a fixed position the complete time.

At this time, this technology is not practical. The team’s sample needs 50 sets of mirrors and lenses. Still, it is almost larger than the paper pad. This technology has potential that could work in every circumstance in which 3-D visuals would be shown to multiple people at the same time.

Wojciech Matusik, the MIT professor, said, “We hope for building a higher version of the display and next we will refine the optics to continue to improve the image resolution.”

“It remains to be seen whether the approach is financially feasible enough to scale up to a full-blown theater. But we are optimistic that this is an important next step in developing glasses-free 3-D for large spaces like movie theaters and auditoriums”, he continues.