Converting a Bicycle light for use in heavy fog.
This winter has given our area a lot of heavy fog some nights when I'm riding in the country. My CygoLite Rover II has a maxinum of 250 lumens output and has a low, high, super-high and a flashing (NOT strobe) modes. However even on the low setting the light beams do not pentrate far into the fog but bounce back. I had some clear ambe acrylic here that I bought years ago at a Goodwill store. I think that amber acrylic was originally a car visor.
I cut a piece off of the acrylic. Then I radiused the four corners. Next i cut 2 notches on each side of the cut off amber acrylic. Two rubber bands are used to hold the amber acrylic over the lens.
Here are 2 images that show the light on high beam without and with the amber acrylic in place.
Without:
IMG_3553 by
Miele Man, on Flickr
With:
IMG_3554 by
Miele Man, on Flickr
There's only one problem. Since I decided to do this there's been no more fog!
BTW, if your light is round you might be able to simply fit a trailer light amber lens cover over it.
Cheers