DIY Can Light Head Size

[EGad]

The design I have right now is 50mm long X 36mm diameter. If it weren't attached to a can, I'd lose it. I think I'm probably going to have to draw a bigger one up.


But it snowed today, so I got to play around indoors and practice 3D design and rendering.
Here's a quick rendering of the tiny head.


Eric

 

[bradsab]

EGad-
The SST-90 has a big dome and a floody beam. Reflectors do not focus the beam very well. If you haven't done so, snoop around candelpowerforums.com and you'll find a lot of info. The best way to focus the SST-90 is with an aspheric lens, the bigger the better. Some Mag sized aspherics (50-ish mm) do the best job, but a guy on CPF has some smaller ones FS: Cheap Aspheric Lens - CandlePowerForums that do a fair job. I think Packhorse has used them. The Carclo lens I'm using works like an aspheric, but it's more compact, I think. It's been a while since I played with the different lens' and reflectors, but from memory, at 40' it produced a defined square beam about 15' square with no spill outside of that. The reflectors were all pretty floody.
By the way, the Ledil reflectors and the Carclo lens & holder are made to mount on an SSR-90 star. Overall size for the Ledil/SSR-90 is .893" dia X .605" H, Carclo/SSR-90 1.137" dia. X .681" H

 

[EGad]

Thanks, that's exactly the kind of thing I was looking for. Not sure how I missed it on CPF earlier.

Update: I sketched up a quick head that uses a 50mm aspheric lens and has a pretty cool heatsink design to help with focal length issues and also make it a bit more modular, so new emitters can be swapped onto the heatsink and the remainder of the head can be used. I sketched it up for an SSR-90, but pretty much any emitter on a star under 25.5mm diameter. It has an adjustable focal length (although not on the fly you set it internally and it stays locked) to accommodate different emitters. I've only done a 2D side view of it for now, but it looks like it would be workable.