I got a bit blurred projection because I could not get ultra clear polishing, and maybe small tint shift if I remember right... I did this year ago, and than I toss that in a gass for clear dedome. It won't give better results under aspheric lens for sure.
I am not really sure if polished silicone (XP-G2) can act as more energetic source than clear dome and if it can there will be less output from emitter than with clear de-dome anyway. So if less light comes to wavien there will also be less intense reflection on polished dome.
I am pretty sure that Saabluster(OMG Lumens Deft X) tried that and he decided to leave clear dome on DEFT X.
We should make emitter surface more reflective like thin film of transparent mirror particles spray
Interesting, so you say that the Deft X is with the XP-G2 dome still on?
What does it do with a dedomed XP-G2 then?
And how large is the aspheric in it?, is there only the xp-g2, collar, and a big fat aspheric in the deft x.
I don’t think so, certainly in that picture it looks like the emitter is dedomed.
I suspect he means “full dedome”, eg. the solvent/gasoline when he says “clear dome”. Is that right luminarium iaculator?
Out of curiosity, what diameter is the aspheric lens used in the deft-x?
As an extension of the thin dome sliver approach and how it affects the balance between apparent die size and emission characteristics of the light.
I wonder what effect a full dedome followed by a layer of led seal has on the equation.
Essentially you are adding back on a very thin rather flat “dome”, so I would expect that to have some effect. Purely in terms of altering the phosphor layer interface from Phosphor/Air back to Phosphor/Substance.
I realize the refractive index of the led seal would be different to the silicone dome. However it should make a perfect/gapless interface with the die phosphor and by my understanding that should have a somewhat similar effect in terms of emission.
I’ve never applied the sealer myself but maybe someone here could share their experiences with it, does it affect the tint after a dedome at all? Is the Deft-X led sealed?
Your first statement is correct, but knocks the should out of your second statement. If you do not know their reflective indexes are similar, there is no should. Hehe. I have a couple LEDs with seal on them, I do not use it personally. Problem is I don’t know what tint they started at.
Man, Wavien really can’t get their process done right. An optical aperture edge should not look like that, IMO. But hey it worked. Looks like a 20-25mm aperture hole.
I too am curious about the lens. Diameter, and BFL. Or, the clear aperture size that is exposed, even (between bezel edges). The reflective aperture creates a system which is F# limited. What do I mean by that? No matter what lens you use, it is limited by the “F#” created by the reflective aperture. You can change that by opening the hole. As you open the hole, less spill light is reflected back upon the LED, changing the surface intensity. A point exists where optimum reflection exists with any set of a few proper lenses. Of course, closing the hole down to a pinpoint will recycle a lot of light back, but that makes it a high-F#, becoming undesirable/unusable for aspheric lenses with lower F#s.
My wild guess though, is that the lens is around 60mm clear aperture size.
I love the aspherical beams ! I have a lot of mod with them, the better is a dedomed xpg2 at 5.5A, wavien collar and 78mm aspheric lens, I am above 1300 kcds the secret is in the focus of the collar, was many hours working on it :_( as they are very very fine adjustments (tenths of millimeters) to achieve the maximum performance…
Yes when I said clean dome(which is wrong expression) I thought on full dedome version, nice and clean with solvent/gass method. We all know that dedomed emitter out throws domed one so no freaking chance he could done that.
Deft X is de-domed like in picture. Lens diameter is 70mm I think.
Probably he did not want to try bigger ones because XP-G2 would have really small die projection...
I recently sliced domes on XHP-50’s by using a stainless steel washer that sat on the mcpcb, no pressure on the substrate at all. With a new scalpel blade I found that if I did not slide the blade flat on the washer it worked better… holding it at about a 20º angle on the washer and using a single slice motion left a clean shiny surface. There are micro serrations from the blade edge, but it’s the cleanest I’ve ever sliced a dome. I even reduced height after I figured that out and got neat little 1mm shavings of dome material.
This is a Lucky Sun D80, making 4896 lumens on a pair of Efest Purple 18350’s. :bigsmile:
Yes, I have in my possession, with the work that led me to make it not going to sell more with the results achieved.
I made long ago, over 2 year inspired by the deft x give me a few days to find photos and I build a post…
Don’t be sorry we all here want to build crazy throwers.
Fingers crossed you used an reasonably affordable host
I really hope we all can work out the BLF recipe/formula for cheap crazy throwers, better than any manufacturer can make them, just like we have cracked the lumens formula.
We need the equivalent to, high flux bin led, copper DTP mcpcb, fat wire bypass on springs, FET driver or straight DD, fat led wires, high drain battery.
But for lux instead, so far as i see it, high flux bin dedomed XP-G2 in the coldest temp available, biggest fattest aspheric the host can fit in the best quality you can afford possible AR coated (stock or coated after), reflective aperture light recycling, and if you use a very large final lens you can counter the resulting small beam & light loss from led to optic by using several lenses.
The biggest problem with all of these steps is we don’t have good cheap hosts to start from, so very few is experimenting, this is BLF after all
The RA needs “perfect” alignment and design or gobs of % return are lost. In the right ratio with right size RA+lens, I stated gains can be as high as 50. These are through DIY methods. The truth is, they can reach 70+ if the design is near perfect, mirroring is right on the RA, and RA focus is perfect. Whats interesting is I have measured this, when it is known I am catching less than 50% of “lost light”. How does 50% light recycled increase intensity by 70%? It’s a paradox. But I have my thoughts on how this can easily happen. —If you beat a Wavien design, which is good, but not optimal, then you’ve removed the only real opponent between winning over DEFT-X. Speaking conservatively now. Once your lens system puts out more captured light, any light can beat another by its lens clear aperture size being larger.
About the aspheric hosts. I’m actually trying to do it, right now. I’m getting the sources finalized and the CAD files finalized for some prototypes with pill in place in the host, using a custom driver size that a good man here designed. It’s a lot of $ to start it ramping up into production (and timely without labor help), but I have the only coated lenses on hand I know of out there in quantity, capable of making it affordable for people to have well over 1 million cd. These would be limited initial runs, as these lenses are finite in quantity (after X amount, they are not made anymore by the company which did the run, but I have bought all remaining lens units for this). Tuning each light takes a tole to maximize kCd, assembly process would limit speed of production. After the initial lights could be made, a commercial, current production then coated lens would have to be used (swapped in) to keep the design going for other models. This would lower output to around 1100-1200kCd for the later produced lights. The drivers were just designed and were sent to fab for my test units. I might be able to beat 1000kCd with an XP-L, and give a better size square and total lumens for those that prefer it. With XP-G2, <85mm coated lens using a collimating lens + RA, I have reached over 1500kCd. Using triple optics, I reached ~1700kCd. But, with triple optics, final lens clear aperture is over 90mm. So while the prior lens are smaller, this requires a custom bezel to hold the 3rd lens, which makes it a >90mm lens category light vs <85mm. All coated, different lenses, of different sizes, but final lens dictates the light gathering/output potential of the light design. The host is large. But very useful.
I’m just a guy who has dedicated many years and maybe too much $ learning photonics. I think there is nothing more interesting than what can be held in hand, and change an event very far away, instantly with a switch. I always thought light was something special to be harnessed and used, and the uses today are what continue to drive me; LEDs and lasers alike. Bicycling, motor vehicles, R/C vehicles, night-vision, long-range target shooting, hunting, and plain old scenery are just a few. They can all become more useful or available more often when light is involved in some special way, and the lighting can be continually pushed by one’s imagination. The look on people’s faces when they see light in a special way; it captures imaginations. People who never get to see what technology really is out there now, then they see it first-hand, and suddenly they are captured by imagination too. I think light is the one thing I have seen make so many different types of people instantly excited, that they might not even know why they are excited. I started building my own lasers long ago, I was “bit by the bug” then, and the rest is history. Lasers led me into beam-expanders of my own design, which brought me towards wanting to figure out lenses more appropriately, then LED light naturally followed in my journeys. Finally, out of shadows I came. :bigsmile:
AR coating arrives today. I will update some other info later on, and get into a little more detail about what I have been working with lately, and some plans for action.
the secret is in the focus of the collar, was many hours working on it :_( as they are very very fine adjustments (tenths of millimeters) to achieve the maximum performance…
give me a few days to find photos and I build a post…