Why does lightcurves dim down?
When studying lightcurves you would notice that almost ALL flashlights/headlamps dim down from their 30 second lumens output. Some more and some less, but why is this?
It is mainly down to one factor: heat build-up.
When running an LED there will always be heat build-up, but too much heat will harm and damage the LED chip. When running the LED hard to create a high lumens output, the heat build-up will be equally high, and the flashlight/headlamp will have to dim down in order to protect the LED.
However, there are different ways of making the headlamp dim down. We do, unfortunately, see a lot of examples where the behaviour of the light is designed to generate impressive lumens and runtime values, rather than a useful light output.
At Suprabeam we aim to give the user maximum light control, which means that our lights run on the highest possible continuous light level. Typically, you will see some kind of dimming down when the LED gets to hot, but only down to the highest possible light level that the light can hold for the rest of the runtime. Like you see in lightcurve example 3 above. If a longer runtime is needed, the flashlight/headlamp has a lower light level that can be activated.
The key focus point is that the USER decides how the light behaves (high light output / long runtime) and not the software in the flashlight/headlamp.