Does anyone make a light like the Astrolux FT03 with a TIR instead of a reflector so you get that throw without all that spill?
Or has anyone modified the FT03 like that or is there even a TIR that large? I’m thinking of something like in the Manker MC13 but with the diameter of the FT03.
Acebeam has a couple of TIR-throwers on offer (the L18 the largerst IIUC).
If the head diameter was another 1” larger it might be in the same ballpark. I don’t know about the lux comparisons. The lumens seems much lower.
All my TIRs have spill, i don’t know of any that don’t so i’m not sure what you’ve got in mind. An aspheric lens maybe?
And TIRs of the same size can come with different amounts of throw depending on the light distribution profile they have been designed with. Larger doesn’t always equate to more throw.
Acebeam L17 or L18 both are excellent TIR lights…L18 throws extremely well. I have both.
That’s due to the LED, which is on the edge already in the L18.
I understand the different TIR’s have different amounts of throw but one designed for throw generally has more than an equal sized aspheric in my experience.
The Manker MC13 has very little spill and is a very good thrower for its size. In absolute terms the Astrolux FT03 has much more throw (and is a much larger light) but the spill is annoying. I want to illuminate the distant object and not me and my nearby surroundings.
A TIR similar in design to the one in the Manker MC13 but of the size of the FT03 should have a lot of throw without the spill.
I’ve experimented with aspherics but they aren’t efficient and many have artifacts that I don’t care for. I’m not talking about the cheap zoomie aspherics but even the better quality ones (while cleaner) are still inefficient.
That’s fair enough, i read your first post as you expecting no spill from a TIR, if i’d read it as ‘less spill’ i probably wouldn’t have posted 
You response to the Acebeam L18 suggestion is interesting though, you’ve discounted it because of it’s physical size rather than it’s throw/spill attributes which gives a slightly confused message about what you want.
Your first post indicates you want the same throw as an FT03 but without the spill, that beam by definition would have less lumens than the beam with the spill but your post #3 indicates less lumens as undesirable.
According to it’s webpage the L18 has 250k lux which is more than the 190k of the SST-40 version of the FT03 but still isn’t what you want. Is it because it has a smaller hotspot or do you need the body to be a specific size?
Something like a Led Lenser with a TIR optic in the ‘throw’ mode has no real spill beam. Or at least the spill is so narrow, that it really just gives you a fatter beam/hotspot in use.
But generally a TIR with a tight focus, will have a lot less spill beam than a reflector.
Convoy S2+ with a narrow focus TIR and a BLF A6 with a regular OP reflector. Both XP-L.
The spill beam has a much smaller diameter with the TIR vs the reflector.
As for the op. I have a large TIR in a D cell Maglite, but the optic is quite shallow and is super wide angle. Lovely even beam, but no throw at all. I guess technically you could either say it is 100% hot spot and no spill…. or 100% spill and no hot spot. But I’m pretty sure it isn’t what you are after. I forget where I bought the optic, have had it 7 or 8 years at a guess. Some Chinese online seller such as DX, Tmart, Fasttech, etc.
The Coast HP314 and HP314R use a huge TIR optic. But no idea if it would be possible to get hold of just the optic.
https://coastportland.com/collections/led-flashlights/products/hp314r
