Noctigon K1 green & D4V2 cyan in stock

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pol77
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lightdecay wrote:
SST-20 3000K is a great LED with high R9. A cheap and easy way to make it better is to add a minus green filter.

Try adding a Lee Zircon 803 (weaker) or 802 (stronger) minus green filter before you decide to do an emitter swap. In my experience SST-20 3000K paired with a minus green filter looks better than Nichia 219B R9050 sw30.

Possibly, but I bet it does not look better than Nichia 219b R9080 sw30.

Unheard
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Yeah, mine has been shipped today. Nice cyan KR1 w/ XP-L 4000K Love .

Smile, you cannot kill them all.

iamlucky13
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I’d like to request that the first person to try out a hollowed out artificial candle as a diffuser for a 2200K KR4 share a short video clip of the result, preferably next to a real candle for comparison.

It just seems to me like this should work really well.

Hikelite
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https://doi.org/10.1117/1.JPE.4.043598

“Candle shows different color temperatures (CTs) at different positions inside the flame. The CT varies from 1847 to 2626 K for the white candle studied
herein. To represent, the CT of the brightest spot is chosen, which is 1914 K”

The CRI value for this candle is 83

“a candle with 1914 K and an 83 CRI

SKV89
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Candles are normally about 1800K overall and 100 CRI.

Hikelite
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SKV89 wrote:
Candles are normally about 1800K overall and 100 CRI.

Source for that 100 CRI?
SKV89
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Google

raccoon city
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Hikelite
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SKV89 wrote:
Google

When someone claims something they need to quote a study. Google is not a source is a search engine which will give you all the results you want and you don’t want.
That is why I have posted above a quotes from a study.

EasyB
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Hikelite wrote:
https://doi.org/10.1117/1.JPE.4.043598

“Candle shows different color temperatures (CTs) at different positions inside the flame. The CT varies from 1847 to 2626 K for the white candle studied
herein. To represent, the CT of the brightest spot is chosen, which is 1914 K”

The CRI value for this candle is 83

“a candle with 1914 K and an 83 CRI

!{width:50%}https://i.postimg.cc/13PHKNnb/JPE-4-1-043598-f001.png!

They don’t give any explanation for how the flame deviates from a black body spectrum. In my opinion that is incomplete, especially when they are attempting to use that 83 CRI number to show that their LED somehow gives off “better” light than a candle.

iamlucky13
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Hikelite wrote:
SKV89 wrote:
Google

When someone claims something they need to quote a study. Google is not a source is a search engine which will give you all the results you want and you don’t want.
That is why I have posted above a quotes from a study.

They don’t need to, but I always appreciate when someone is able to quote a study, especially if the claim does not match my expectation.

To get to the point, even sunlight does not perfectly replicate its own reference, which above 5000K is a standard illuminant that mixes direct sunlight and scattered skylight, in reality varies. I’d be somewhat curious to see measurements of sunlight at different times of day to see how measured CRI and DuV changes, and whether it ever quite measures 100, or tends to stay in the 99.x range.

Below 5000K, the reference for CRI is a theoretical black body, and there can again be some differences because of absorption and discrete emission effects that I assume are present. It should be extremely close 100, but I’ve also never seen an actual candle measurement.

I’m particularly curious about thorium mantle lanterns, because I know they have some strong discrete emissions, and might as a result be quite significantly short of 100 CRI.

  • Edit – just saw the paper linked above has a CRI measurement. I’m reading the paper now. 83 CRI surprises me and raises some questions, such as whether that is an integrated measurement.
cetary
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iamlucky13 wrote:

They don’t need to, but I always appreciate when someone is able to quote a study, especially if the claim does not match my expectation.

To get to the point, even sunlight does not perfectly replicate its own reference, which above 5000K is a standard illuminant that mixes direct sunlight and scattered skylight, in reality varies. I’d be somewhat curious to see measurements of sunlight at different times of day to see how measured CRI and DuV changes, and whether it ever quite measures 100, or tends to stay in the 99.x range.

Below 5000K, the reference for CRI is a theoretical black body, and there can again be some differences because of absorption and discrete emission effects that I assume are present. It should be extremely close 100, but I’ve also never seen an actual candle measurement.

I’m particularly curious about thorium mantle lanterns, because I know they have some strong discrete emissions, and might as a result be quite significantly short of 100 CRI.

  • Edit – just saw the paper linked above has a CRI measurement. I’m reading the paper now. 83 CRI surprises me and raises some questions, such as whether that is an integrated measurement.

That paper I suspect may not be accurate. We have people with spectrometers here on these forums that can run those tests easy to verify the claims. Mantle lanterns were already tested here. The mantle in question has a 98 CRI, essentially perfect.

contactcr
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Integrating toilet, measurement taken from about 18” directly above:

Pretty great CRI and the steak house is pretty good too.

Dougdimadome
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Can anyone be so kind and explain what does R9080 or R9050 mean or the difference? Is that the CRI of the led?

contactcr
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Dougdimadome wrote:
Can anyone be so kind and explain what does R9080 or R9050 mean or the difference? Is that the CRI of the led?

It’s Nichia terminology. First two numbers are CRI and last two are CRI (R9). I believe it’s the minimum or average? that bin is rated for.

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Thanks for the response! Very much appreciate it.

iamlucky13
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contactcr wrote:
Integrating toilet, measurement taken from about 18” directly above:

Pretty great CRI and the steak house is pretty good too.

Awesome! Thanks for doing this, and my compliments on the fancy white integrating toilet. It’s probably a good thing you didn’t try this one inside a styrofoam sphere.

98.4 is in the ballpark I expected, and the R9 is just about perfect. It is possible that the porcelain is not entirely neutral and is affecting the measurement of the reflected light, but I doubt it has a very large effect.

contactcr
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Probably one of those “studies” you order when you are selling OLED candles and you need to make them look good.

Either that or I have some high CRI wax I should be selling.

gchart
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contactcr wrote:
I have some high CRI wax I should be selling.

Great, I’ll take some in 2000K please. But if you can’t ensure a negative DUV, the deal is off.
anonymous_user
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Did Hank originally offer green trits as an option for the KR1 tailcap? I don’t see green as an option currently.

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contactcr wrote:
Dougdimadome wrote:
Can anyone be so kind and explain what does R9080 or R9050 mean or the difference? Is that the CRI of the led?

It’s Nichia terminology. First two numbers are CRI and last two are CRI (R9). I believe it’s the minimum or average? that bin is rated for.


Nichia uses minimum. Some makers use average. Some users apply Nichia-style 4-digit specs to LEDs from other makers.
So it’s usually good to state whether it’s XXXX min. or XXXX typ.
alex64
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Hank, It’s https://www.noctigon.com/ the new shop or it’s a fake site?

SKV89
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Hank, when will the E21A 16emitter mule version be available? Waiting for that to order a few lights from you.

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alex64 wrote:
Hank, It’s https://www.noctigon.com/ . . . or it’s a fake site?
Probably. It’s a weird place.

The address of Hank Wang, (Noctigon) is as follows:

https://intl-outdoor.com/
.
Will it be the place in EEUU, USA?

I don’t know,

Desconfío,

I’m suspicious,

I’ve seen this other address for the site in the US.

https://intl-outdoor.com/us-warehouse-product.html

Sorry for my bad English
(google translator) , (https://www.deepl.com/translator)

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alex64 wrote:
Hank, It’s https://www.noctigon.com/ the new shop or it’s a fake site?

Fitness store + flashlights, very strange. Question
Maybe fake site.

Hank Wang
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gregor wrote:
alex64 wrote:
Hank, It’s https://www.noctigon.com/ the new shop or it’s a fake site?

Fitness store + flashlights, very strange. Question
Maybe fake site.

This is our new site, which we are still working on it.

https://intl-outdoor.com, Noctigon, Emisar, flashlight components.

Hank Wang
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https://intl-outdoor.com, Noctigon, Emisar, flashlight components.

scintillator
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Those mules are nice.

pepinfaxera
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Hank Wang wrote:

https://www.noctigon.com/
This is our new site, which we are still working on it
I couldn’t get in “login”

Do we have to create / register a new account?

Sorry for my bad English
(google translator) , (https://www.deepl.com/translator)

Hank Wang
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pepinfaxera wrote:
Hank Wang wrote:

https://www.noctigon.com/
This is our new site, which we are still working on it
I couldn’t get in “login”

Do we have to create / register a new account?

The site is still under construction, not yet finish, it’s not working properly.

https://intl-outdoor.com, Noctigon, Emisar, flashlight components.

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