Patent ID: 9519206
Filing Date: 2016-12-13
CPC Classification: G02B,G03B

Claim Text:
1. A multi-layer projection screen, comprising: a substantially transparent substrate having first and second sides; a stray light rejection layer disposed across the first side of the transparent substrate, the stray light rejection layer including an array of pillar structures, wherein each pillar structure of the array of pillar structures includes: a lens array disposed across the second side of the transparent substrate and optically aligned to the array of pillar structures such that each lens of the lens array focuses first display light having a normal trajectory relative to the second side of the transparent substrate through the entrance and exit apertures of a corresponding pillar structure while second display light having an oblique trajectory that is greater than a threshold angle from the normal trajectory is directed onto the opaque side wall and substantially blocked from reaching the exit aperture, wherein the opaque side wall and transparent pathway are formed of materials having substantially similar refractive indexes.