*BLF LT1 Lantern Project* (Post #6078 Lantern GB Price announced!

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BlueSwordM
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@pilotdog, look at post #1626 and search for cost in the OP.

Also, the Samsung LH351D LEDs in bulk are much cheaper than Cree XPLs and Nichia 219C LEDs. We also don’t need as much heatsinking, and a lower power LED driver with a max of probably 1,4A, and the inter compatibility with the Q8 means costs will come down.

It is probably going to cost 30$US compared to 40$US of the original BLF Q8. Just the LEDs themselves will cost half as much in bulk, and it is going to help tremendously.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

sbslider
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Joat wrote:
Somehow I didn’t get on the list before now, please add me for one.

Interest list number 837 for Joat.

prisma wrote:
I´m interested, please count me in for one.

Interest list number 838 for prisma

FilipeBanana wrote:
Please add me to the list for one, thanks!

Interest list number 839 for FilipeBanana

interest list sorted by entry number

interest list sorted by user names

PocketSammich wrote: I don’t need this, but I want it. Please sign me up.

Stereodude
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I’m interested in at least one, possibly more depending on the final product, price, and performance.

NobleX13
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I am in for two. I agree that commercial LED lanterns suck.

"Nothing is true, everything is permitted."

OKCOREY
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I am in for two.

sbslider
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Stereodude wrote:
I’m interested in at least one, possibly more depending on the final product, price, and performance.
Stereodude, I put you down at number 840 on the interest list.
NobleX13 wrote:
I am in for two. I agree that commercial LED lanterns suck.
NobleX13 is on the interest list at 841 and 842.
OKCOREY wrote:
I am in for two.
OKCOREY is non the interest list at 843 and 844.

PocketSammich wrote: I don’t need this, but I want it. Please sign me up.

Plat
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I am in for one

ToyKeeper
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LED cost won’t be a significant factor if it uses twice as many LEDs…

I think it could get a smooth enough beam with 3 LEDs per color though, instead of 4. So that could potentially help a little. In terms of lumens, it doesn’t really need more than one per color… but the extras help spread the light more evenly.

BlueSwordM
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As discussed by DBSar and me, using the Q8 MCPCBs will help a lot with costs and modding simplicity.

It also makes testing much easier since we can easily buy the MCPCBs now. I have 3 on the way.

Edit: I am sorry for my attitude.
I had not thought about alternatives not costing much money at all.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

sbslider
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Plat wrote:
I am in for one

number 845 on the interest list.

PocketSammich wrote: I don’t need this, but I want it. Please sign me up.

djozz
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BlueSwordM wrote:
As discussed by DBSar and me, using the Q8 MCPCBs will help a lot with costs and modding simplicity.

It also makes testing much easier since we can easily buy the MCPCBs now. I have 3 on the way, one being for DBSar to test out more easily with other LEDs.


Please stop guessing what the costs will be of particular components, you are probably wrong and it will influence the design process in a wrong way, namely not the best lantern is designed but a lantern that according to some BLF members’ wild guesses is cheap.

In the Q8 design process we tried to avoid thinking for the manufacturer as much as possible, and the end result had features that early in the process we thought we would never achieve, and we still got it for the original price goal.

As for using the Q8 board design, having a dedicated board designed for the lantern makes a lot of sense and will probably have no influence whatsoever on the costs, making DTP led boards costs very little money nowadays.

BlueSwordM
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Aah I had not thought about it that way.

Thank you for correcting me.
Maybe I was thinking that way too much for reducing costs.

I’m sorry for repeating that too.

Thank you Djozz for the better perspective.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Chatika vas Paus
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Interested in two. Depending on price of course.

sbslider
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Chatika vas Paus wrote:

Interested in two. Depending on price of course.


you are numbers 846 and 847 on the interest list

PocketSammich wrote: I don’t need this, but I want it. Please sign me up.

SilentObserver
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Interested in Group Buy.

DBSAR
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  • UPDATES ** Cross section of the BLF V2 lantern added. Further field testing going great! photos coming soon. also will have more detailed specifications for the lantern to provide to Barry & Thorfire soon. All we may need is to find someone to draft up a CAD of the lantern in the cross-section drawing below if Barry needs a more detailed version for Thorfire to work on.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

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sbslider wrote:
Plat wrote:
I am in for one
number 845 on the interest list.

Sbslider can you PM or email me a text-file of the list so i can update the OP? Thanks Smile

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

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SilentObserver wrote:
Interested in Group Buy.

SilentObserver is 848 on the interest list

DBSAR wrote:

Sbslider can you PM or email me a text-file of the list so i can update the OP? Thanks Smile

email sent

PocketSammich wrote: I don’t need this, but I want it. Please sign me up.

goshdogit
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Looks like progress! Thanks for the update. Thumbs Up

What if the “shade” was a cylinder rather than a cup?

The top surface of the “aluminum threaded shelf/base” could be left un-anodized to help reflect light.

This would save a bit of polycarbonate and eliminate the paint, but I’m not sure how it would affect the lantern’s strength or otherwise change its construction. Just a thought.

I like the idea of amber switch LEDs rather than green ones like the Q8.

Looking forward to the new photos. Hope you had a great trip!

MichielSanders
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DBSAR wrote:
** UPDATES ** Cross section of the BLF V2 lantern added. Further field testing going great! photos coming soon. also will have more detailed specifications for the lantern to provide to Barry & Thorfire soon. All we may need is to find someone to draft up a CAD of the lantern in the cross-section drawing below if Barry needs a more detailed version for Thorfire to work on.

Nice cross section DBSAR, is there also a notch and pin on the lens and base so they can’t twist and damage the wires?

Olight: M3XS-UT, S Mini CU, R50 CU, R50 Pro LE, M2R, I3T Cu, S30R III, Marauder X6, X7R, X9R - BLF: Q8, A6, GT, GT mini - Emisar: D1s, D4Ti - Reylight: Tripple Dawn, Ti Lan 

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peabody
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Interested in two please.

arisdes
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Put me on the list for one please.

Madtoffel
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Nice to see some progress! But what happend with the tint ramping option we discussed earlier? As far as I understood it, we would need at least 6 LEDs (and a new LED board) to make that work.
Also I thought that our priority is to create the “ultimate Latern”, not the cheapest.
And please add me for a second one.

vestureofblood
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I would be interested in this, please add me to the list.

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asciiphil
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Definitely interested. Those Samsung LEDs look really nice.

bmengineer
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Is it intended that the lantern is water resistant? The schematic shows an o-ring at the base of the diffuser, but nothing at the top or around the center screw

Find all my reviews of flashlights and more gear at www.bmengineer.com

DBSAR
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goshdogit wrote:
Looks like progress! Thanks for the update. Thumbs Up

What if the “shade” was a cylinder rather than a cup?

The top surface of the “aluminum threaded shelf/base” could be left un-anodized to help reflect light.

This would save a bit of polycarbonate and eliminate the paint, but I’m not sure how it would affect the lantern’s strength or otherwise change its construction. Just a thought.

I like the idea of amber switch LEDs rather than green ones like the Q8.

Looking forward to the new photos. Hope you had a great trip!

The cup shape makes it much stronger than just a cylinder type shade. i did test that shint base reflector idea originally, and the flat-white surface increases light reflection and reduces the hard-light glare and bad light distribution flaws of most factory lanterns i tested & used. (shiny or chromed reflectors cause to much glare & artifacts.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

DBSAR
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MichielSanders wrote:

Nice cross section DBSAR, is there also a notch and pin on the lens and base so they can’t twist and damage the wires?

The cross section can;t really show it, but the shade would definitely need either one or two index locking notches at the head area to lock it from turning. (Same goes for the base)

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

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vestureofblood wrote:
I would be interested in this, please add me to the list.

added! number 849 on the list.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

DBSAR
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Madtoffel wrote:
Nice to see some progress! But what happend with the tint ramping option we discussed earlier? As far as I understood it, we would need at least 6 LEDs (and a new LED board) to make that work. Also I thought that our priority is to create the “ultimate Latern”, not the cheapest. And please add me for a second one.

That tint ramping is definitely in line to be added, as this cross section is just the design of this prototype being tested. All it would need is the change to six emitters, ( three 3000K & three 4000K LEDs) and the addition of a third wire lead from the driver.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

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