I once made some 18" dual tube 90w low pressure
sodium vapor wash lights out of Hubbel Sportslighter reflectors. Biggest
DMX douser Wyborn offered at the time was like a 14"
douser. Wasn't a problem given I made some
gate reflectors for the
wash lights but it did cut down some on the overall beamspread of the light.
Assuming high bay fixtures, often with plastic reflectors, what specifically is their dia? Second if plastic in
reflector, you might want to plan on changing them to at least aluminum
reflector so as to prevent the now heat retained from melting the
reflector. Than after that, plan on adding a
bit more support to the aluminum
reflector so as to mount and carry the added weight of what ever you add to the front of the
fixture.
In other words, as starting
point, I would plan what ever you decide on from
ballast mount of the
reflector to it's front having to get something completely custom made.
Not sure about a
barn door concept in that while a
dowser will dim as it were all light output, a
shutter cuts light from it's edges.
First challange than is if there is a
dmx douser that will go as wide as your
fixture width because otherwise your beam spread gets cut back which is a bad thing in having to add more fixtures to
cover for this..
