*BLF Ultimate Lantern Project*~updates, June,20,2018,V2cross-section drawing added)

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DavidEF
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nquinn wrote:
DavidEF wrote:
nquinn wrote:
Any chance you’d also consider making a mini version to hang in tents?

Something like single cell (AA or 18650), candle to incandescent temperature range (~2000k), lightweight, 360* diffuser, cheap. Should include some kind of clip or ability to hang it to a tent ceiling loop.

I don’t understand why people want lanterns in the 4000-5000k range. That introduces blue light which is artificial and will make it harder to sleep because it messes with circadian rhythms.


Wait, did I read that correctly?Are you really saying that blue light is artificial?

Artificial as in it doesn’t normally appear at night and messes with our circadian rhythm.


Okay. WinkThumbs Up

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DBSAR
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ToyKeeper wrote:
I haven’t really thought about emitter choice for this project… I’m not very involved in the hardware. Maybe XP-G3 would be good, or maybe 219c, or maybe XP-L or XP-L2, or … etc. I hope it’ll be high-CRI though, and hopefully no warmer than 4000K. 219c 4000K could be good.

It’s worth mentioning that high CRI isn’t going to be as efficient.

Like DavidEF mentioned the XP-G3 may be a good emitter for this. ( in the 4000K range to get the best balance of tint & output. Also maybe the XP-G3 would not get so hot as an XP-L on 1.05 amps ( three-7135s) after a hour? I never tested that LED yet.. The run time would still be not bad on maximum-mode at 1 amp if four 3200mah or higher cells are used maybe.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

DBSAR
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nquinn wrote:
Any chance you’d also consider making a mini version to hang in tents?

Something like single cell (AA or 18650), candle to incandescent temperature range (~2000k), lightweight, 360* diffuser, cheap. Should include some kind of clip or ability to hang it to a tent ceiling loop.

I don’t understand why people want lanterns in the 4000-5000k range. That introduces blue light which is artificial and will make it harder to sleep because it messes with circadian rhythms.

I did that exact mod to a Roche single 18650 flashlight, put a 2700K warm white XM-L in it, with a 3-7135 Q-Lite, and a frosted diffuser. Its the perfect tent hanging light. Smile

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

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DavidEF wrote:
nquinn wrote:
DavidEF wrote:
nquinn wrote:
Any chance you’d also consider making a mini version to hang in tents?

Something like single cell (AA or 18650), candle to incandescent temperature range (~2000k), lightweight, 360* diffuser, cheap. Should include some kind of clip or ability to hang it to a tent ceiling loop.

I don’t understand why people want lanterns in the 4000-5000k range. That introduces blue light which is artificial and will make it harder to sleep because it messes with circadian rhythms.


Wait, did I read that correctly?Are you really saying that blue light is artificial?

Artificial as in it doesn’t normally appear at night and messes with our circadian rhythm.


Okay. WinkThumbs Up

He is correct on that, warmer tints closer to that of a candle or even yellows, ( 2300 ~ 2700K) does help people sleep & be more relaxed at night. https://www.thespruce.com/warm-lighting-2175144

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

cypherz
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Please add me to the list.

DBSAR
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Also updated the interest list. I will be working on the modification to the prototype this weekend coming, and will keep all the recent tips in mind in the upgrades, ( including that it will use simple common 16mm stars for easy modification or LED swaps by everyone. ( it will get modified form the single emitter to two, and a single center bolt-post, and a frosted main lens ( to eliminate the internal lens to cut costs.)

As we all know… TheMiller has been MIA now from BLF for over 2 months… and he was a key team member who had the expertise and contact abilities to communicate with the manufacturers on building our special lights, and he did suggest Thorfire as a good candidate, also Lumintop (who builds our GT) may be another possibility for this ultimate lantern. If TheMiller does not return, we will need help form a member who has the ability & time to be that link to manufacturers for us.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

ISO
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Was talking to a builder and he wanted 10 of these light once I showed all the benefits. He have seen my other light but this light fits was he needed. but Sadly I think it takes to long before its in produktion so he have to go elsewhere.

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Interested in two.

vestureofblood
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Interested.

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northbeard
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Interested, for sure!

Many of the third-party hosted pictures in the early parts of this thread have been ‘unlinked’ by the hosting provider. Does anyone have current (or a pointer to updated) pictures of the prototype so far?

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Interested in three. Please add me to the list.

dealgrabber2002
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RobertB wrote:
Yup, I’m number 31 on the list from two years ago.

Right behind you buddy! Can’t believe it’s already been 2 yrs. How times fly.

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nquinn wrote:
Any chance you’d also consider making a mini version to hang in tents?

Is a $2 red or yellow diffuser cone not sufficient? Just add one to your favorite light.

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I am interested in 1. Please add me to the list if you would be so kind!

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Itsme
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Interested, please add me to the list

Light Years
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Interested for sure

DBSAR
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List updated. I have the prototype now taken apart and working on the upgrade modifications.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

DBSAR
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List updated. I have the prototype now taken apart and working on the upgrade modifications.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

DBSAR
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vestureofblood wrote:
Interested.

Nice to see you interested in this too. Thumbs Up

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

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Please add me to the interest list. Thanks.

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DBSAR wrote:
He is correct on that, warmer tints closer to that of a candle or even yellows, ( 2300 ~ 2700K) does help people sleep & be more relaxed at night. https://www.thespruce.com/warm-lighting-2175144

Personally I’d love to see this one use a 2700k tint. Yeah, that’s very warm for a flashlight but IMHO it would be perfect for a lantern. I usually go for 2700k for my home lighting since it just feels nicer and more natural.

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Interested, thx.

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Please add me to the list, thanks!

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Add me to the list please

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Intrested in 2

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Intrested  2  

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Count me in.

BlueSwordM
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Personally DBsar, I would think the best emitters would be Nichia 219Cs in the 3500-4000k CCT range.

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BlueSwordM wrote:
Personally DBsar, I would think the best emitters would be Nichia 219Cs in the 3500-4000k CCT range.

The 219c is a very nice LED, but since it is not the most efficient emitter out there it does not fit into the lanterns idea of maximum efficiency. Swapping LED’s in the lantern should not be too difficult if you feel it is necessary.

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Every time I go out for a fire, or help a buddy work on a car. Or just hanging out after dark having a drink outside I think about how nice this lantern will be.

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