bisy question-backside glare

patrick mitchel said:

I'm happy with the pattern that the light throws. I have a question regarding the transparent
perimeter surrounding the lensand visible from the backside of the lamp. Is that a function of
euro law that requires light to be thrown to the backside of the lamp? I found it distracting
enough to line the perimeter with red tape- which still allows some light to come through but
doesn't create glare on my glasses. Perhaps it has something to do with the long wb recumbent I'm
riding. That puts the light far enough out in front of the light source to be in the line of
vision . Thanks Pat

I read someplace that there are two versions of the BiSY lamp, one with the peripheral lighting and
one without. The latter was intended for high mounts (e.g., close to the handlebars), where the side
lighting would interfere with the cyclist's vision. It's obviously not a problem if you have the
light mounted down at the fork crown or off to the side of a fork blade.