| 摘要 |
<p>An illuminated sign which includes a single or double sided photometric lens one or both sides of which have in juxtaposition therewith a graphics panel. The photometric lens has one edge lit by a strip of light emitting diodes (LED's) and the lens(es) is(are) adapted to spread the LED's light evenly across the graphics panel and through a clip-on frame for the photometric lens and graphics panel(s) which frame can provide edge light distribution for the sign. The photometric lens can also be fitted as an illumination source in an existing exit or the like sign to produce illumination for the existing exit or the like sign.</p> |
