ANNULUS SCATTERING DIFFUSER FOR DISPLAY WITH REFLECTIVE SURFACE

摘要

This disclosure provides systems, methods and apparatus for enhancing the brightness and/or contrast ratio of display devices. In one aspect, the display devices can include an annular diffuser that is configured to scatter light into a ring shaped region. The annular diffuser can include a plurality of axicon lenses or holographic features. The reflective display can include an annular diffuser to shift the direction along which most of the modulated light is scattered away from the direction along which light is specularly reflected by the display devices to reduce specular glare and enhance brightness and/or contrast ratio.

主权项

1. A display device, comprising:
a plurality of optical elements, each of the plurality of optical elements including a reflective surface configured to receive light from an incidence direction and reflect at least a portion of the light toward a direction of specular reflection; and a diffuser layer configured to redistribute at least a portion of the light reflected from the plurality of optical elements into a ring-shaped region between an inner circular region and an outer circular region, the inner circular region and the outer circular region being concentric and disposed around the direction of specular reflection.