led-dome.jpg (21184 bytes)led-wedge.jpg (10348 bytes)Inverted Wedge Versus Dome LEDs

The LED Christmas lights I tested all had either Dome or Inverted Wedge lenses on them. Dome LEDs (right) have a narrow viewing angle (often 30 degrees) and convex plastic dome in front of the light element. Inverted Wedge LEDs have a concave top (left) and tend to scatter light in a range closer to 180 degrees.