Originally Posted by mister p
LED's are designed for the user not the receiver.
The same way that wearing a reflective jacket doesn't make you visible unless a light shines on it.
LED's are ok to see with but, because of their directionality, not much good to be seen by.
Take a lighthouse for example. All the light in the world but not much good unless it's pointing at you. Five degrees off horizontal and it's invisible.
Same for LED's.
As you said Kevin.......
Should've known better .... but
Would accept all of that if the light source were presented through a straight lens, however, if presented through a multi-ridged, multi-directional lens you would surely receive the presented beam through the sequence of angled ridges ? and .... whilst in theory, there's the possibility that the angled beam generated by each ridge will have a finite (narrow) direction, the interval between loss and recovery of the light source would be neglible ?
Are you stating there's a specific regulation rendering LED's of whatever application are non-compliant, or offering a theory as to the possibility ? If the former, there are numerous marine manufacturers marketing some very expensive, non-compliant lighting, fitted to some seriously priced new RIBs !
Should have stuck to my mantra .....