Looking for a single AA headlamp

d-c-fix is a possibility to make the beam with a diffusion film more floody
maukka examined the effect of one of those diffusion films

https://budgetlightforum.com/t/-/52949

d-c-fix is a german based company with a quite variaty of those foils

https://www.d-c-fix.com/

Another AA Headlamp with no reflector like the H502 would be the Spark SG5

https://budgetlightforum.com/t/-/20988