New DE reflector...interesting design.

Looks interesting.......oh sorry it's not DIY ...lol....maybe the home tins smiths can make it for a few bucks....have at it boys....lmao. Maybe you can bend one from some alcan foil. Matches your tin foil hat. Try making a toothbrush...see if that helps your mangy breath. Possibly fashion one from an old worn out toilet brush. Nice n cheap like.
http://www.hydrotek.ca/new-products/silverstar-2100-de-wide-105049

looks a lot like the wide angle reflector from the agrolux DE fixtures.

It's from space.

I got a couple of those, they're suppose to be used with a German made single ended bulb that if light by a high frequency ballast that produces 100khz will do 2100Umoles. http://www.hydrotek.ca/en/hydroponic-lamps/narva-super-hps-1000w-2100-umol-100065 If anyone wants to test them I'd sell them cheap for testing purposes. Also they have an Agrolux remote ballast that does 100khz.