The light output measurement is performed by placing a Lux light meter beside the light. Both are pointed at the ceiling (five feet above) of a dark room. This measurement uses the ambient light produced by the bike light. We found this to be the most effective and repeatable measure of each light.
Pointing the light directly at the meter produced varying readings depending on exactly where the light beam was centered. Also, it was highly dependent on how focused the beam pattern was. Thus we chose the ambient light measurement test as the most effective for evaluating these lights.
Mtbr Lux Graph
Mtbr Lux Data – Mtbr Lux per $ is Mtbr Lux divided by price to indicate brightness per dollar. Higher values mean a brighter light for the money.
Light Meter and light are pointed in the ceiling of a controlled room to measure ambient light.
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