BIKE LIGHT BEAM PATTERNS
There is a lot of chatter about spot beams vs flood beams and which light has better throw. To help you select the light that works best for your needs we have tested all the lights we sell to see how they distribute their light. The results are presented here in a graphical format.
Test set up: We used a test room with black walls and ceiling.
Test Procedure: The lights were set up 10 feet from a light meter and turned on at their maximum setting. Each was allowed to run for 5 minutes with a fan blowing on the light to keep it cool. (all the lights dim down slightly in the first few minutes as the LED heats up) The light was then rotated side to side and up and down to find the brightest spot at the center of the beam. (Our equipment lets us adjust the aim of the light in 0.1 degree increments) The light is then rotated in 1 degree increments and a reading taken out to 35 degrees.
Results: Though the meter was not calibrated and there was a small amount of ambient light (2-3 LUX), all lights were tested under the same conditions. The comparison between lights and lens/optic options is valid. The results are shown here as a graph of light intensity vs angle from the center point.
A light with a higher reading at 0 degree will provide farther throw (light an object at the farthest distance)
A wider curve will provide more flood (light the sides of the road or trail better)
Lux vs Lumens - Lux is a measurement of light intensity (brightness) on a given spot. Lumens is a measurement of the total light energy emitted by the led in all directions added together. You can take a light with low lumen output and focus it on a small area and it will have a high lux reading. However it will be worthless for riding.
For lights with interchangeable optics they are all shown on the same graph for comparison. The MJ-808-L2 and MJ-880-L2 are also shown with our Wide Angle Lenses installed.
I tried to keep the vertical scale the same for all lights for easy comparison but a few went off the top of the chart and the scale was increased to accommodate.
The results were sometimes surprising (as in the 3 optics for the X1). It appears the the wide angle lens is much less efficient but you must take into consideration that the light at wider angles is lighting a much larger circle.
I'll leave it to you to draw your own conclusions or would be glad to discuss the results if your interested.
Action LED Lights
CLICK ON ANY IMAGE FOR FULL SIZE
The Duo has almost the throw of the Olympia but a narrower beam pattern.
You can see that the spot and super spot are very close. The flood lens is very effective.
Note: The above and below tests are with the new wide angle lens which is now included with all X2 and XS lights
NEW FOR 2016, THE MAGICSHINE 900 SERIES SHOWN HERE ON ONE GRAPH.
The Magicshine 808-L2 has a very narrowly focus beam for great throw from a single led light.
It is also shown here with our Wide Angle Lens installed which spreads the light only on the Horizontal axis.
The red light shows the Horizontal spread. The green line shows that the vertical spread is unchanged.
With the beam covering 3 times the area the intensity (or throw) is reduced by 1/3.
This is the new MJ-858. I see this as a good all purpose light. Small and light enough to be a good helmet light with a fairly tight beam.
The MJ-872 is one of the favorites for a bar light with a wide even beam.
MORE ON THE WAY!