Patent · US Active

Directional backlight

US9459461B2 · kind B2 · utility

126Cited by
29References
22Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 19, 2014
Grant dateOct 4, 2016
Priority date
Expiry dateJun 19, 2034

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B27/4205
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

A directional backlight is disclosed. The directional backlight has a plurality of light sources to generate a plurality of input planar lightbeams. The plurality of input planar lightbeams illuminates a directional backplane that has a plurality of directional pixels to scatter the plurality of input planar lightbeams into a plurality of directional lightbeams. Each directional lightbeam has a direction and angular spread controlled by characteristics of a directional pixel in the plurality of directional pixels. The directional backlight can be used to generate a 3D image by specifying the characteristics of the directional pixels in the directional backplane.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.