djozz tests

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djozz
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djozz tests

I start this thread, or actually just a post, to make everything that I tested the last few years and posted on BLF, a bit more accessable (yesterday I tried to put everything in my sig-line but that just looks ugly, so now the sig-line just contains a link to this post). If I do more tests in the future, I will add links to them in this post.

As a general disclaimer, the minimum that I try to achieve in my tests is a good impression of what is going on with a led, spring, or whatever it is that I tested, which may be helpful in modding a flashlight. In some cases I dare claim that what I measure is a good approximation of the reality. In no test I claim that my results are the exact truth, as an amateur I make no use of certified or officially calibrated equipment, and the test set-ups are usually (though well thought-over) home-made contraptions. I do always try to pay attention to possible shortcomings of the used method.

Here are the links:

 

Integrating spheres: sphere #1, sphere #2, sphere #3, sphere #4 
 
Luxmeter tests: link1 link2 link3  
 
 
Inaccuracy of tint and colour reproduction: link1, link2  
 
 

 

 
Led tests, white emitters, tests usually on DTP copper boards: Nichia 219A 4500K 92CRI, Nichia 219B 5500K 75CRI/5000K 92CRI, Nichia 219B 'small die', Nichia 219C 5000K 83CRI, Cree XR-E on DTP-copper board, Cree XP-G2, Cree XM-L2, Cree MT-G2, Cree XP-E2, Cree XP-E2 'Torch', Cree XP-L, Cree XP-L Hi, Cree XHP70 (post#575), Cree XHP50 (post#274), Lumileds Luxeon Q, Lumileds Luxeon Z, Osram Oslon Square (3500K 80CRI), new Osram Oslon Square (4000K 90CRI), Osram Oslon SSL80 96CRI, cheap XP-L replacement found in SRK-clones, cheap chinese 'JR' XP-E-type led, Nichia 219B V1 4000K 93CRI, three Oslons: 1) latest gen. Oslon Black Flat  2) SSL80 4000K 92CRI latest gen. 3) SSL80 4500K 96CRI 1 gen. before latest, 3rd gen. Osram Oslon Square 5000K 70CRI, Cree XP-G3 S5 3A, Samsung LH351B, Nichia 144A series 6500K 70CRI + 5700K 90CRI , 
 
Edited by: djozz on 11/09/2016 - 15:43
KawiBoy1428
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Very valuable info!!! Thank you for what you do, Jozz! Wink

KB1428 “Live Life WOT”

MRsDNF
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Thanks djozz. You are a legend and your work invaluable. Your efforts are greatly appreciated. Nearly every light I build I use your info to spec it up.

My current and or voltage measurements are only relevent to anything that I measure. Budget light hobby proudly sponsored by my Mastercard and unkowingly paid for by a hard working wife. Free plug for my daughter. http://missymupsnails.com.au

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FmC
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Who's been a busy boy Wink

Your tests are really an invaluable asset here. Cheers Beer

Hestbech
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Subscribed! Your reviews and tests are always thorough and informative. And i like your "not so polished" style

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CRX
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Nice.

ReManG
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Very nice Djozz! The signature line was huge, glad you started this, thanks for all you do here!

ALL of my links are non-affiliated for your pleasure...

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JamesB
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Djozz, improving BLF’s signal/noise ratio since 09/07/2012

Kloepper Knife Works
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And it makes it easy to point newbies to this thread for 2 purposes:

1. Gaining knowledge, without retyping it all the time.

2. To show them that testing is a requirement for pushing the boundaries of our lights.

Thanks djozz for being such a valuable, informative, and friendly part of BLF.

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Sticky Big Smile

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pilotdog68
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So I take it the 219B V1 is coming soon?

My Favorite Modded Lights: X6R, S8 , X2R , M6, SP03

Major Projects:  Illuminated Tailcap, TripleDown/TripleStack Driver

djburkes
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Yes…thank you sir. I was just about to look for a test thread on a red xp-e2…so you helped me out there, lol.

djozz
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pilotdog68 wrote:
So I take it the 219B V1 is coming soon?

Good catch, THE_dAY very kindly gifted me three Nichia 219B V1 4000K leds from Illumn.com, they are underway somewhere. When they are in I will test one (not to death, I will use them for a triple). I am mainly curious about the Vf compared to the old 219B and the 219C.

jacktheclipper
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Thanks djozz .

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djozz wrote:

pilotdog68 wrote:
So I take it the 219B V1 is coming soon?

Good catch, THE_dAY very kindly gifted me three Nichia 219B V1 4000K leds from Illumn.com, they are underway somewhere. When they are in I will test one (not to death, I will use them for a triple). I am mainly curious about the Vf compared to the old 219B and the 219C.


Sweet. Yeah Vf, and maybe you could see if lumens are still increasing at 3amps?

My Favorite Modded Lights: X6R, S8 , X2R , M6, SP03

Major Projects:  Illuminated Tailcap, TripleDown/TripleStack Driver

OrionLight
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This is fantastic! I can’t tell you how many times I’ve referenced your data/tests to compare information for purchasing a particular light. Like most of the previous posts have said, your work is invaluable.

Hellie112
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Lets make this thread a sticky, it provides valuable info to us modders. Thank you for your hard work.

On a side note, the link to the xhp70 led seems incorrect Silly

Chicken Drumstick
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MRsDNF wrote:

Thanks djozz. You are a legend and your work invaluable. Your efforts are greatly appreciated.


+1

My Torch & Flashlight Reviews: http://budgetlightforum.com/node/37402

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Nice testing job! Party
Thank you for everything, don’t stop Wink

djozz
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Thanks for the nice comments Smile (was not the intention, it is all old work)

Hellie112 wrote:
Lets make this thread a sticky, it provides valuable info to us modders. Thank you for your hard work. On a side note, the link to the XHP70 led seems incorrect. :p

corrected the link, I hope the rest works ok

CityCoffee
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djozz wrote:

pilotdog68 wrote:
So I take it the 219B V1 is coming soon?

Good catch, THE_dAY very kindly gifted me three Nichia 219B V1 4000K leds from Illumn.com, they are underway somewhere. When they are in I will test one (not to death, I will use them for a triple). I am mainly curious about the Vf compared to the old 219B and the 219C.

Hi djozz, lot of charts, but no V1. The one I am trying to find…

I already use the 219B V1 sw50 (5000k) @ max 2,4A* for momentary use, without issue, so far so good. It replace an old XML-T6. Temperature management seems to be more an issue than tint shift, get hot fast… Anyway, not using max for more than 1mn.

The 219C’chart you released lately looks great for a 80CRI. Do you think it would be possible to replace a XP-L HI with a 219C (I don’t mind loosing lumens, but the XP-L HI is really too cool) or it would be better to simply use a XP-L warm high CRI?

Even tough the 219C has some slight turquoise tint, the CRI is nicer compare to factory XM-L2 and other Cree cool white emitters…

Still prefer the 219B-V1 as a high CRI neutral white but above 2.5 -3A the 219B-V1 may fry easily…

I would like to build a high CRI thrower single 18650… But with a reflector larger than ET sticks…

(*2,4A was measured with XML)

I was also wondering:
If a dedomed XP-G match the beam profile of a dome XP-E, does a dome 219C (which is close to a XP-G) would have the same beam than a XP-L HI (which surface is wider than XPG/219B and equivalent to a XP-L dedomed) within same reflector, of course…

Anybody some ideas?

Billy X
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Thanks a lot Djozz.Your posts are “go to” posts.

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great work djozz!

and all collected at one place its even more impressive…

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watch my deals thread on BLF / on my blog / or visit my facebook page for updates

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The 219B-V1 I have been using have a nice low Vf. Had a triple hooked up to a 105C 8*0,35+6*0,38 and guess what: Even with my very long and thin dmm probes I got 5.08A!!! I wouldn’t try these with a FET-driver, not even a triple, way too much amps, too much heat generated. A member of the german forum fried a triple with a FET-driver, got over 16A initially.

Outstanding work djozz! Keep it going please, very appreciated.

djozz
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chouster wrote:
The 219B-V1 I have been using have a nice low Vf. Had a triple hooked up to a 105C 8*0,35+6*0,38 and guess what: Even with my very long and thin dmm probes I got 5.08A!!! I wouldn't try these with a FET-driver, not even a triple, way too much amps, too much heat generated. A member of the german forum fried a triple with a FET-driver, got over 16A initially. Outstanding work djozz! Keep it going please, very appreciated.

That is a nice thing to look forward to. I was indeed planning using a FET-driver, but in a 18350 host, so that may just be perfect . Smile

luminarium iaculator
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Subscribed.

Thank you very much Djozz.

chouster
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I made some X6 triples lately and wrote a build thread in german and I compared different emitters under all different kinds of CUTE-3-SS optics. I’m afraid you won’t see the images from the build and optics comparison without beeing logged-in, but: I think the beamshots should be visable to everyone. There are two X6 triples with B-V1 and some more lights, have a look if you’re interested.

Zanders
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Thanks for your work Djozz.

THE_dAY
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djozz, thanks for consolidating all your invaluable work!

CityCoffee, I was planning on running the 219B V1 @~2.5A but you say that’s too much heat. Was it more heat than the XML it replaced? From djozz test of the previous 219B I thought it would be fine but I guess I might have to run it slightly lower.

Dallas
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Thanks for all you hard work. This is an awesome resource. Your skills are very much appreciated!

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Regarding the temperature @2.4A I made this remark just based on memory. Also, some driver behave differently according to the emitter vf. (I cannot guaranty you that my V1 is driven at 2.4A)

2.4A was measured by another user with factory XML emitter. On my side, the tail cap measurement on burst mode cannot be done with my tester at all (?)

According to djozz, the V1 is between the 219B and the 219C… The question is:
How close to 219C Smile

djozz chart shows some very good performance from the latest version and seems to be indestructible. On the other side, the 219B is far behind…

I believe that the 219B V1 can be used (for momentary period) around 2.5A without issue.

Without good test (djozz’s style) I would hesitate to associate a 219b-V1 to a 3-3.5A driver.
Apparently 219C is “very” fine at this current. (Nichia even set a max @ 1800mah vs 1500m for other 219b…)

Again, what would be nice is a 219C CRI90 sw45 or sw50.

Something very nice with the 219B-V1 is it’s neutral white characteristic. If you are used to warmer emitter, it may even looks too cool (especially with the sw50)
Other 4-5000k NW led do not make the red and yellow pop-up as the Nichia does. Finally, compared with a cool-white it makes the v1 looks off-white again. Weird but finally, it is what should be a true neutral white> no hue perception and a good color resolution.

I believe that some 3000k can provide a good CRI but with a strong orange hue.

Non high CRI neutral white (XML) need to be pushed to clear-up the greenish tint associate to them. Annoying…

Hope that someone manage to test more in details the V1… H)

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