Light output – Total light output measured in lumens. Lumens has become the most commonly used unit of measure for total light output in portable lighting devices such as flashlights, headlamps and lanterns. Wattage, on the other hand, is a measurement of power consumption, not light output. With today’s super efficient LED technology, it’s very possible to have a 1 watt LED flashlight with a greater light output than another flashlight with a higher wattage rating, particularly if the higher wattage light source is less efficient.
Beam distance – The distance, measured in meters, at which the light projects a useful amount of light, measured at 0.25 lux. (0.25 lux is approximately the equivalent of light emitted from a full moon “on a clear night in an open field.”)
Run time – Tested with fresh batteries from 30 seconds after the light is turned on until the light output reaches 10% of the initial measurement.
Peak beam intensity – The brightest point in the beam measured in candela. Candela is the modern unit of measure for light intensity replacing the now-obsolete unit known as candlepower. Although candlepower was replaced by candela in 1948, it is still in common use.
Impact resistance – The height, measured in meters, from which the light can be dropped onto cured concrete and still work properly. Dropped samples cannot have any visible cracks or breaks and must remain fully functional to receive this rating.
Water resistance – This icon indicates an IPX4 rating which means the sample is tested against splashing water from all angles. If this test is performed it must be done after impact resistance testing is completed to ensure water resistance under real-life conditions.
Water resistance – Water submersion depth rating, measured in meters. This icon indicates at least an IPX7 rating which means the sample is submerged to a minimum of 1 meter depth for 30 minutes. If this test is performed it must be done after impact resistance testing is completed to ensure water resistance under real-life conditions.
With the adoption of these new standards, we’ll be able to more easily compare apples to apples (or flashlights to flashlights). Whether you’re looking for a light for your workshop, camping and outdoor use, emergency use, or just around the house, you’re sure to get the best flashlight, headlamp, or lantern to suit your needs by comparing lights that use the ANSI FL1 flashlight standards in their packaging and advertising. Happy hunting!
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