Columbia Technology Ventures

Realistic, time-varying 3D images can better engage viewers than flat 2D images. However, most methods for displaying these images require viewers to wear 3D glasses. This technology is a set of methods for displaying 3D movies without requiring viewers to wear additional accessories, and which can be used by observers in different locations. This standalone 3D display technology can be used in advertising, electronics, art, or education.

Glasses-free 3D image displays have a range of potential applications

This technology comprises three methods for enabling 3D viewing. First, layered, offset grids of small reflective elements collectively form a low-cost, volumetric display for 3D images. Second, a rear projection system consists of many projectors, each of which displays a horizontally compressed image of the same 3D content from different angles. Together, these projected images present a full 3D image to the viewer. Third, content is projected onto a flat, single-layer grid of spherical elements (such as mirrored spheres). A combination of images on screens on either side of this grid creates a 3D displayed image, which also accurately reflects ambient light. This technology has been demonstrated in a laboratory setting.

Lead Inventor:

Shree K. Nayar, Ph.D.

Applications:

  • Display of 3D animation
  • 3D visualization for research, education, television, and video games