Transparent lighting apparatus for use with e.g. light shaft to light building, has elements with higher spacing, where screen position with respect to guide is such that elements are opposite to vacuums to reflect light towards guide

摘要

The apparatus (10) has LEDs (18) for injecting light in a transparent light guide (11) by its cylindrical wafer (14). A front surface (20) of a transparent screen (19) made of glass comprises elongated shaped reflecting/reflector elements (R) including a composition containing opaque particles. A relative position of the screen with respect to the guide is such that the elements of the screen are respectively opposite to elongated vacuums (D) of the guide for reflecting light towards the guide. A spacing of the elements is higher than width of the elements.