The Tint Snob Thread

[NPL]

You should try the Nichia e21a in 4500k or 5000k. No green or yellow, just perfect with very high CRI!

 

[staticx57]

Or even try the E21A in 6500k and really blow your mind.

 

[Modernflame]

Can you recommend a flashlight with the Nichia E21A?

 

[NPL]

I don't know of any stock lights that use that LED. You can buy the LEDs on mcpcb at Virence.com and then mod an existing light. I have it in an Armytek Tiara.

 

[archimedes]

Can you recommend a flashlight with the Nichia E21A?

I don't know of any stock lights that use that LED. You can buy the LEDs on mcpcb at Virence.com and then mod an existing light. I have it in an Armytek Tiara.

I think Virence had JetuE21A available at one point, although they may have sold out. They were available when I got my Jetusolis ( jetusolii? ) and I sort of wish I'd tried one.

I am quite pleased with (especially) the 4000K Optisolis emitter, however.

 

[Johnnyh]

I think Virence had JetuE21A available at one point, although they may have sold out. They were available when I got my Jetusolis ( jetusolii? ) and I sort of wish I'd tried one.

I am quite pleased with (especially) the 4000K Optisolis emitter, however.

Same here, have an 4k Jetusolis on the way from Virence. The claimed 96 CRI piqued my interest so I bit. When I ordered there was a e21a offered but I didn't get it...probably should have from what I hear. They are both sold out.

 

[archimedes]

I think the CRI is ~ 97 (3000K) - 99 (5000K)

I can't seem to find the 4000K rating at the moment, but IIRC it was ~ 99

EDIT - correction, 4000K Optisolis CRI was 98 (but still slightly prefer it over the 5000K CRI 99)

 

[jon_slider]

Im looking forward to his Jetbeam RRT-01 build

meanwhile here is some food for thought, clips of pics from Clemences site

 

[archimedes]

Im looking forward to his Jetbeam RRT-01 build

Which emitter ?

 

[jon_slider]

Which emitter ?

I believe the plan is to do a test build with E21a..
I dont think he plans to stock inventory of those lights, rather to build a kit.

If I had a choice between E21a and Optisolis (if Clemence offers both like in the JetU)
I prefer the E21a at Warm CCT
and Optisolis for Cool CCT

For those who missed his stocked inventory of JetU, It might be worth asking him if he is willing to modify a JetU for you, if you provide the light. I would suggest ordering it to be shipped directly to him for modding.

Same for the RRT-01, once he knows if the light will work with his LEDs and boards, he might be willing to receive a light to mod.

 

[archimedes]

I thought that the Optisolis couldn't be run at high current though ?

 

[jon_slider]

I thought that the Optisolis couldn't be run at high current though ?

as a single LED, also true for the E21a I think

however, he has boards that use more than one LED:

4x E21a:

4x Optisolis:

 

[archimedes]

Yep, I would be wanting an Optisolis 4000K quad

Isn't each one of those a dual-die ?

 

[staticx57]

Yep, I would be wanting an Optisolis 4000K quad

Isn't each one of those a dual-die ?

Yep, they have two dies in parallel. Although I would hesitate to call them dies as they share phosphor, more similar to the old n083b than say an xhp50.

You can do some pretty cool things with them.

 

[jon_slider]

Isn't each one of those a dual-die ?

Your question goes over my head.

I posted those boards by looking at his site.
I can send you a link if you pm me ;-)

else
I suggest you contact Clemence for the most accurate answers to your questions.. Im not really versed in the complexities you are asking about.

 

[staticx57]

Your question goes over my head.

I posted those boards by looking at his site.
I can send you a link if you pm me ;-)

else
I suggest you contact Clemence for the most accurate answers to your questions.. Im not really versed in the complexities you are asking about.

The die is the part of the LED that does the emitting. Desperate from say the dome, solder pad, bond wires, etc

 

[archimedes]

Thanks, I hope these emitters start to get used more widely.

 

[jon_slider]

You can do some pretty cool things with them.

thanks for the help with the technical details

I read a post about a CW JetU optisolis having green tint, above the BBL, and that they require diffusion to blend the tint..

many questions
is that what your white reflector is doing.. blending the tint shift?
what CCT did you choose?

got beamshots? ;-)

 

[staticx57]

These are quite a bit older than those in that light. These are from Clemence's first sample run from a year ago. They are 3000k as well. I do not notice a tint shift at all with these. Here is a picture with them on the bare board, well not so much of the light but the light they produce.

 

[jon_slider]

Lovely!
thanks for the visuals