What if you made like Perseus and held up a mirror?
I was thinking a reflector.
Ever use a laser on a reflector? Pretty dazzling.
A mirror would work, but you’d have to be pretty good at guessing angles.
Aiming a flat mirror is an issue.
A corner reflector made of mirrors would be what is needed for sidestepping the aiming issue. Making one at close to perfect angles would be tricky.