I think it's a great concept, always thought that, and way more useful for a headlamp than for a flashlight.
Wether the implementation is good we will see when there are some reviews.
What it needs in my opinion:
A way to adjust the output level in auto mode (like others said already), maybe three or four logarithmic "visually linear" stages selected with a turning knob or similar.
Potential biggest issue is obviously when a bright light is pointed towards you the headlamp will dim down when you need high output instead 1. to see something while you are being blinded and 2. to signal you are here to the oncoming car or whatever it is.
If they are really smart the could make give the sensor the ability to differenciate between own reflected light and light from other sources but I don't expect that.
This is how I would do it: have the headlamp send out a high-frequency signal to "mark" the emitted light as "own". Don't dim down if the light coming to the sensor doesn't have the signal.
Wether the implementation is good we will see when there are some reviews.
What it needs in my opinion:
A way to adjust the output level in auto mode (like others said already), maybe three or four logarithmic "visually linear" stages selected with a turning knob or similar.
Potential biggest issue is obviously when a bright light is pointed towards you the headlamp will dim down when you need high output instead 1. to see something while you are being blinded and 2. to signal you are here to the oncoming car or whatever it is.
If they are really smart the could make give the sensor the ability to differenciate between own reflected light and light from other sources but I don't expect that.
This is how I would do it: have the headlamp send out a high-frequency signal to "mark" the emitted light as "own". Don't dim down if the light coming to the sensor doesn't have the signal.