LIGHT-REDIRECTING RETRACTABLE WINDOW COVERING

摘要

A retractable window covering for natural illumination of building interiors by redirecting the incident daylight at angles that promote its deeper penetration into the interior space. The window covering comprises an optically transmissive, flexible polymeric sheet having reflective surfaces incorporated into its material and configured to redirect at least a portion of light propagating through the sheet towards a desired direction. The window covering is operable from a closed to an open position so as to increase or decrease the amount of redirected and/or admitted light.

主权项

1. A retractable window covering, comprising:
a flexible sheet of optically clear or translucent material defined by a first major surface and an opposing second major surface; and a plurality of reflective surfaces included into said sheet between said first and second surfaces, wherein each of the plurality of reflective surfaces is dimensioned such that at least a portion of incident light received on a surface of the flexible sheet is intercepted and redirected along a direction of propagation that is different than a direction of incidence.