[Interest Check] Sofirn SP10R - deep red AA/14500 EDC

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Lux-Perpetua
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[Interest Check] Sofirn SP10R - deep red AA/14500 EDC

Hello everyone,

Since Sofirn's C01R received a lot of great feedback and interest, maybe it's time for the next step and release another iteration of Sofirn's successful SP10 series, now using deep red light. I call it SP10R to follow the naming convention of its prececessors SP10A, SP10B, SP10 V2.0 and SP10S. Sofirn was able to get a bunch of Luminus SST20-DR (660nm) which are fortunately not as difficult to source as Nichia's E21A, reasonable in pricing and great in performance. For those of you who have not come into contact with photo red / deep red light, you are highly encouraged to check out Sofirn's C01R using XP-E2 photo red which is on sale already.

Here's the datasheet to Luminus's SST20-DR: https://download.luminus.com/datasheets/PDS-003040-Rev-04-SST-20-DR.pdf

A review of SP10S can be found here, if you are interested in the general look of the SP10S host design: http://budgetlightforum.com/node/70802

 

Sofirn SP10R

For reference only - a sample picture of SP10S, a predecessor using a white LH351D LED but similar in shape and size.

 

Typical applications:

  • Low-light usage to maintain night vision capability
  • Finding keys, stargazing, astrophotography...
  • Military/outdoor use (reading maps, orientate without attracting attention, no attraction of insects)
  • Ambient colorful illumination (nightstand, decoration)

 

Typical light color (taken from C01R using XP-E2 photo red):

 

Specifications:

 

Emitter Luminus SST20-DR (deep red)
Tint

deep red (660nm dominant wavelength)

Dimensions 88 mm (length) x 20 mm (head diameter)
Net weight 38 grams
Output to be assessed but brighter than C01R
Operating voltage 0.9V - 4.2V

Output/Modes

(no actual numbers!)

Firefly: 0.2lm (I=6-7mA)

Low: 2-3lm (I=25mA)

Medium: 30lm (I=250mA)

High: 100lm (I=800mA)

Turbo: 225lm (I=2.000mA)

Power

1x 1.2V AA NiCd or

1x 1.2V AA NiMH or

1x 1.5V AA Alkaline or

1x 1.5V AA NiZn or

1x 3.2V 14500 LiFePO4 or

1x 3.7V 14500 Li-Ion

Switch Type e-switch sideswitch
Reflector Light OP reflector (as in SP10S)
Impact Resistance 1m
Water Resistance IPX-8 (2m)
Accessories

Reversible clip

2x spare o-ring

lanyard

keyring clasp

manual

 

14500 li-ion battery (not included)

diffuser (not included)

UI (draft)

Hold from OFF ► firefly mode (~0.2lm)

1 click ► ON/OFF

Hold from ON ► Cycle modes low-medium-high (no mode memory from OFF)

2 clicks from ON/OFF ► Turbo ► 1 click back to turn OFF / 2 clicks to return to previous mode**

3 clicks from ON/OFF ► Strobe - SOS - Beacon*

4 clicks from OFF ► electronic lockout (on/off)

* strobe modes will be removed completely

** will come into consideration

Improvements

over SP10S

  • direct access to firefly mode
  • click for ON/OFF and hold to cycle
  • no mode memory regardless of the battery chemistry
  • improved, stiffer tailcap spring to prevent sudden power-offs

Further suggestions

  • black anodized clip instead of bare aluminum
  • improved, more sturdy keyring clasp to prevent loss of the flashlight

 

Current project status:

  • Approval by Barry Lee (Sofirn) to start the project
  • Interest check ongoing

 

 

Please express your interest below this post. Thank you!

 

Interest List:

 

Forum member Amount
Lux-Perpetua 1
lightdecay 1
id30209 1
TMaxxJJ 1
MoreLumens 1
TimMc 1
nastynate 1
firstcipher 1
Blggg 1
Scientist 1
Grigio 1
Dougdimadome 1
netprince 1
casi29061965 1
TheAuditor 1
mili111 2
cothyhu77 1
skinny_tie 1
Unheard 1
Marc E 1
LightintheNight (TLF) 2
Flaschenlampe (TLF) 1
Kosta(s) (TLF) 1
hypertonie (TLF) 1
t-soung (TLF) 2
Lew Zealand (TLF) 1
Dachfalter (TLF) 1
edcgermany (TLF) 1
oOFOXOo (TLF) 1
ahirshy 1
patmurris 1
wapd2 1
rastaman (TLF) 1
Tarvandyr (TLF) 1
0ssi1973 (TLF) 1
Genießer (TLF) 1
ibeQuint 1
2Ace 1
sfrederik 2
d_t_a 2
GERFlash 1
ReManG 1
Lightbringer 1
Minocc 1
mountainair26 1
goshdogit 1
Chronovore 1
Gunga 1
elbugatti (TLF) 1
Carringdon (TLF) 1
Kabukimann (TLF) 1
der_horst (TLF) 1
maildroid 1
caramba 2
SwissFlashy 2
matik42 1
lamppu 1
Sean Ingram 1
WalkIntoTheLight 1
DaveyC 1
james0tucson 1
adam7027 2
Sillen 1
Gr8Scott 2
rost333 2
   

Total amount

(as of 09/13/2020)

 75

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Disclaimer:

Since this plan may eventually lead into an actual sales/groupbuy thread, I have decided to put this in the commercial sellers / BLF user negotiated deals subforum.

Luminous and wired, we'll be glowing in the dark.

Edited by: Lux-Perpetua on 09/13/2020 - 13:04
Lux-Perpetua
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reserved

Luminous and wired, we'll be glowing in the dark.

lightdecay
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Nice! SST-20-DR (660nm) is a great LED.

id30209
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In!

 

WTB Titanium 4sevens 2xAA tube

TMaxxJJ
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Yes please!

MoreLumens
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Well why not. Interested!

drewski
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I really like my C01R but I would much rather have a dual red+white LED for an AA light.

TimMc
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Interested

nastynate
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Interested in one.

firstcipher
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Interested

Blggg
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Interested.

mitsuki08
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Going with the trend I guess a red led SP40 will come along with a better UI?

Scientist
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I will probably get another one over my wife’s objections.

Grigio
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Yes.. interested in one!

mortuus
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lightdecay wrote:
Nice! SST-20-DR (660nm) is a great LED.

how great compared to other similar red leds?

...where Frugal meets with Flashlight!

              つ ◕_◕ ༽つ

Dougdimadome
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Interested

netprince
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Interested, thanks!

casi29061965
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Interested.

Lux-Perpetua
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drewski wrote:
I really like my C01R but I would much rather have a dual red+white LED for an AA light.

Like this?

Well, this would mean a complete new host and reflector design which is probably too much an effort. However, I will keep your idea in mind as it's interesting.

Alternatively, you could try looking for a flashlight like EagleTac D25LC2 Color using the (rather old) XM-L Color LED, with RGBW tints in one LED.

 

 

mitsuki08 wrote:
Going with the trend I guess a red led SP40 will come along with a better UI?

I'm not sure if a red SP40 would get a lot of interest. But Wurkkos's HD20 with dual emitter layout might be a good host for using both white and red light in one headlamp.

Scientist wrote:
I will probably get another one over my wife's objections.

That's the right attitude! Big Smile Buying just another one exclusively for your wife might let her forget any objections. Wink

 

mortuus wrote:
lightdecay wrote:
Nice! SST-20-DR (660nm) is a great LED.
how great compared to other similar red leds?

I am afraid there's not much to compare this LED with. Cree's XP-E2 photo red is (presumably) less powerful and smaller in die size. Luminus has its direct competitor, SST10-DR with similar characteristics. My hopes are that SST20-DR will sustain more current, have more output at slightly larger dome size and will fit better to the SP10S driver supporting li-ion batteries.

Luminous and wired, we'll be glowing in the dark.

TheAuditor
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Interested

Bonum commune communitatis.

Yarp.

mili111
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In for two Smile

cothyhu77
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Interested. I hope if this project does go through some of its improvements can trickle over to the SP10S.

Lightbringer
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SOS in a red-only AA light? Really? Facepalm

Pass.

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The far red light is only medically useful for people over 40 years old, according to the published research.

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I’m interested, but whether or not I purchase one will depend on the UI.

I think the draft UI looks similar to the Olight Baton UI, which is one of my favourites, but I do have some concerns:

  1. A single click from turbo returning to the previous mode rather than off is inconsistent. I think a single click from on should always switch the light off, regardless of mode. I suggest using a double-clicl from turbo to return to the previous mode.
  2. I think it should be possible to progress to the next mode from both firefly and turbo by holding the button. I think the C8F locks you into moonlight when you access it via the hold from off shortcut and it’s really annoying.
  3. I would really prefer not to have an SOS mode. At least with a red light I think a strobe or beacon would be much more useful, but I could do without those too.
Lux-Perpetua
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Lightbringer wrote:
SOS in a red-only AA light? Really? Facepalm Pass.

What's the matter with SOS in a red light? Actually, SOS and maybe Beacon are the only modes that make sense to me. But, it's not up to me and as stated in the OP this is a draft UI, so suggestions are always appreciated.

skinny_tie wrote:
[...]

1. A single click from turbo returning to the previous mode rather than off is inconsistent. I think a single click from on should always switch the light off, regardless of mode. I suggest using a double-clicl from turbo to return to the previous mode.

That would be inconsistent with any of the other Sofirn flashlight UIs. One click from Turbo always gets you back to the previous (standard) mode, if I recall correctly. So far, I did not receive or see any significant feedback that this behaviour should really be changed. I remember that we had a brief discussion about this on Wurkkos's new HD20 headlamp thread. If the majority here wants this to be changed, I will be glad to discuss it with Sofirn.

skinny_tie wrote:
[...]

2. I think it should be possible to progress to the next mode from both firefly and turbo by holding the button. I think the C8F locks you into moonlight when you access it via the hold from off shortcut and it's really annoying.

Agreed, thanks. I will update the draft UI.

skinny_tie wrote:
[...]

3. I would really prefer not to have an SOS mode. At least with a red light I think a strobe or beacon would be much more useful, but I could do without those too.

I understand that the entire strobe modes are open for discussion. IMHO, I could live without any strobe modes but it seems I underestimated the demand for these modes. So, maybe let's just use the classic option of all three modes (Buzzing Strobe - SOS - Beacon).

 

Anyway, OP is updated accordingly.

Luminous and wired, we'll be glowing in the dark.

Unheard
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Fortunately, I have no use case for another deep red light. Might be interested nontheless if this one has much more power.

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Unheard wrote:
Fortunately, I have no use case for another deep red light. Might be interested nontheless if this one has _much_ more power.

Depends on what you expect as "much more". Wink If you want it reeeaaally bright and deep red, then Hank's Noctigon KR4 or Emisar D4v2 with 4x SST20-DR might be the right thing.

Luminous and wired, we'll be glowing in the dark.

Unheard
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Lux-Perpetua wrote:

Unheard wrote:
Fortunately, I have no use case for another deep red light. Might be interested nontheless if this one has much more power.

Depends on what you expect as “much more”. Wink If you want it reeeaaally bright and deep red, then Hank’s Noctigon KR4 or Emisar D4v2 with 4x SST20-DR might be the right thing.


Nah, since I have no real use, it must be inexpensive Wink .

Much more power = notably brighter. I know the battery format is very limiting.

Lux-Perpetua
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Actually, I was rather impressed with the maximum brightness of XP-E2 photo red in C01R. Let's see what Sofirn can squeeze out of an SST20-DR using the SP10S driver (with some adjustments, of course).

Luminous and wired, we'll be glowing in the dark.

djozz
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The firefly in my SP10S is absurdly low. But I guess that the modes will be made again for this version Smile

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