The spherical lens has allowed Zebra to print something called a hogel, a mini-hologram of the entire image.

FORBES: Magazine Article

The secret of the Duke device is a spherical lens, a design first proposed in the late 19th century.

WSJ: Next Cameras Come Into View

Zebra came up with a spherical lens that records a much wider field of view from each point of the hologram.

FORBES: See It and Touch It