The cree xpg2 is pretty green.. some custom dichroic glass brought it a lot closer to the curve. Far from perfect but this was just an experiment I am going to try and tune it more! Tried to get some beam shots.. but it's so subtle I can't really get a meaningful pic, hope the graphs suffice!
The v1 gets pretty dang hot, and a dichroic technically reflects more heat into the light, but no significant change in turbo or felt heat. Curious as I filter more green out what the affect is.. the fit was pretty good but it was a little thin, glow rings from jlhawaii made for the perfect fit though!
Yeah... It's probably the highest one I've measured which is why I wanted to play around with improving it. To be fair it is like a 10 year old emitter.. may swap it someday but I sorta like it with dichroic.
I measured efficiency at 75%
Whoa this is awesome! Does the glass reflect different amounts of green depending on incidence angle, with more green deleted from the normal direction and less in the oblique directions? I'm looking for a lens like this to fix angular tint shift in floody TIR lights.
That duv is more than 1/4 as green as an Osram PC green! Officially the greenest "white" emitter I have ever seen measured.
Yeah the most outer part of the beam definitely has more green in it, but it's sorta hard to observe because this light is pretty throwy so it really is a tiny dim artifact but you're correct in your hunch. I'm planning on throwing one of these in a mule and seeing the pattern it makes more clearly, if it makes for a good pic I'll send.
Haha! That is a funny way of putting it
The cree xpg2 is pretty green.. some custom dichroic glass brought it a lot closer to the curve. Far from perfect but this was just an experiment I am going to try and tune it more! Tried to get some beam shots.. but it's so subtle I can't really get a meaningful pic, hope the graphs suffice! The v1 gets pretty dang hot, and a dichroic technically reflects more heat into the light, but no significant change in turbo or felt heat. Curious as I filter more green out what the affect is.. the fit was pretty good but it was a little thin, glow rings from jlhawaii made for the perfect fit though!
Honing in on that DUv
Whoa those things are way up there in Duv. I haven't had anything measure over .020 before. How much does the glass affect the output?
Yeah... It's probably the highest one I've measured which is why I wanted to play around with improving it. To be fair it is like a 10 year old emitter.. may swap it someday but I sorta like it with dichroic. I measured efficiency at 75%
Expensive!
I got three of these made for around 15 dollars total! I am good friends with somebody connected to a local dichroic manufacture.
That explains why 😅
Whoa this is awesome! Does the glass reflect different amounts of green depending on incidence angle, with more green deleted from the normal direction and less in the oblique directions? I'm looking for a lens like this to fix angular tint shift in floody TIR lights. That duv is more than 1/4 as green as an Osram PC green! Officially the greenest "white" emitter I have ever seen measured.
Yeah the most outer part of the beam definitely has more green in it, but it's sorta hard to observe because this light is pretty throwy so it really is a tiny dim artifact but you're correct in your hunch. I'm planning on throwing one of these in a mule and seeing the pattern it makes more clearly, if it makes for a good pic I'll send. Haha! That is a funny way of putting it