Multi-View Displays:    

In a multi-view display, the image to be displayed is converted into perspective subsets, each subset pertaining to a range of angles in the horizontal direction.  A DLP-based projector is then used to illuminate an anisotropic holographic diffuser bonded to a mirror.  Light emitted at different angles from the projector are delivered into different, narrow ranges of viewing angles, and the holographic diffuser distributes light into the vertical direction as well.  The mirror is rotated to sweep the output from the projector through a full 360 degrees of horizontal views, and the DMD is controlled to provide the viewer with a perspective of the object that correctly corresponds with the viewer’s position around the display.  Computational units control the selection of DMD mirrors to ensure that perspective in both the vertical and horizontal dimensions is undistorted.  The method does not provide parallax in the vertical dimension, though control of the mirror tilt and corresponding computations can provide the correct perspective for a given range of expected vertical positioning of the viewer.