The Beta QR HCRI testing.

Hello

has anyone actually tested the beta QR 219a HCRI on a sphere, and checked what the actual HCRI was?.
Prometheus lights state it's around 90.7 according to the picture in the link here;

http://www.darksucks.com/store_BetaQR.html


They also state typical CRI is 93 in their LED's.
maybe that is correct or just marketing the HCRI - because I read that the higher the amp, the higher the CRI is.


ok, so these qr's run on AAA, so this is a low amperage.
I wondered how would this reach impressive 90.7, when some other lights driven at 1 amp+ reaches 85 to 88 cri and are in the neutral category, And near 2amp+ then you can get very good around over 90 then its HCRI.

is this correct?.
would these be neutral rather than HCRI then really?.
is the 93 just a guide?.
could someone test their QR on a sphere and see?.

Confusing, because to me these lights look the part of HCRI!. Everything pops vibrant colours!.

I hope that makes sense because my head hurts!,...and as always, Jason Hui's lights are still the best!!!!.
thanks.

Good question. I'm curious as well as I have two in brass in the mail :grin:
Subscribed.


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Am I missing something? Brass or Copper?

Brass is in the game too now Gunga!.

gunga said:

Am I missing something? Brass or Copper?

Click to expand...

Wow! Where can I get a brass one?


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I have the copper and just got the brass. Goto kickstarter and lookup scout hook bottle opener. The light was sold as a combo deal with the hook but could be bought separately. The brass has a new quick disconnect that uses a spring. Good engineering on that. I really like the light

Can it still be bought?


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gunga said:

Can it still be bought?


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Click to expand...

There is at the $100 pledge level: https://www.kickstarter.com/project...t-hooktm-keychain-bottle-opener?ref=discovery

The project is funded. How do I pledge?!


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I don't think you can anymore once it is funded...


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No oooh! How do I get a brass beta!


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Back to the questions raised:-

No wonder you're having a headache...

has anyone actually tested the beta QR 219a HCRI on a sphere, and checked what the actual HCRI was?.

Click to expand...

CRI cannot be obtained from an Integrating Sphere.

would these be neutral rather than HCRI then really?.

Click to expand...

CCT & CRI are not the same.

ok, so these qr's run on AAA, so this is a low amperage.

Click to expand...

Not true.

Thanks,..so what is the guess CRI on a QR then?.
Not 93?.
Thanks.

jonwkng said:

Back to the questions raised:-

No wonder you're having a headache...



CRI cannot be obtained from an Integrating Sphere.



CCT & CRI are not the same.



Not true.

Click to expand...

neutralwhite said:

Thanks,..so what is the guess CRI on a QR then?.
Not 93?.
Thanks.

Click to expand...

Well, Jason does mention a 90+ CRI on Jason's Beta QR Website, it shouldn't be too far off.

Thanks. I did write to Jason on this so let's see too.
its just confusing that someone tells me that the higher the amp , the higher the cri is raised.
the QR been AAA I thought was so low, the cri must be low like 80 or so.
thought it would be more neutral than HCRI and HCRI was what I wanted.

Thanks

neutralwhite said:

Thanks. I did write to Jason on this so let's see too.
its just confusing that someone tells me that the higher the amp , the higher the cri is raised.
the QR been AAA I thought was so low, the cri must be low like 80 or so.
thought it would be more neutral than HCRI and HCRI was what I wanted.

Thanks

Click to expand...

my understanding is that he's using PWM to control the light levels so is a number of rapid full voltage pulses so the CRI stays higher than a current controlled lower voltage set-up.

Thanks,

so would this Also mean in order to keep that high cri in say an 18650 at 90+, would PWM need to be present to do that, or could CC do that too?.

i have a thrunite t10 AA with a 219a hcri but that's not got PWM, so that means cri is lower because PWM is not there?.

big thanks!.

FroggyTaco said:

my understanding is that he's using PWM to control the light levels so is a number of rapid full voltage pulses so the CRI stays higher than a current controlled lower voltage set-up.

Click to expand...

I think so from my 7 years of researching flashlight info but I don't know with certainty.

I do know that there's tint shift with a CC light at lower lumen levels that a PWM light doesn't exhibit or its tint shift is far less.

gunga said:

No oooh! How do I get a brass beta!


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Click to expand...

Try emailing Jason Hui(Dark Sucks) & see if he as any extra from that run he wants to sell!

Thanks lots.

FroggyTaco said:

I think so from my 7 years of researching flashlight info but I don't know with certainty.

I do know that there's tint shift with a CC light at lower lumen levels that a PWM light doesn't exhibit or its tint shift is far less.

Click to expand...