Patent ID: 9651729
Date: 2017-05-16
CPC Classifications: G02B,G02F,G09F,Y10T

Claim:
1. A display comprising: a. a reflective spatial light modulator having a reflective surface; b. a lightguide comprising: c. a light source positioned to emit light into the stacked bounding edges, the light propagating within the array of coupling lightguides to the lightguide region, with light from each coupling lightguide combining and totally internally reflecting within the lightguide region; and d. a light redirecting optical element optically coupled to the second side of the first cladding layer, the light redirecting optical element comprising a plurality of light redirecting features directing frustrated totally internally reflected light from the plurality of light extraction features toward the reflective spatial light modulator, the plurality of light redirecting features occupying less than 50% of a surface of the light redirecting optical element in the light emitting region, wherein the core layer has an average thickness in the light emitting region, the light emitting region has a largest dimension in a plane of the light emitting region orthogonal to a thickness direction of the core layer, and the largest dimension of the light emitting region divided by the average thickness of the core layer in the light emitting region is greater than 100.