Nitecore EC23 - Spot at Center of Beam

17 posts / 0 new
Last post
zzhawk
zzhawk's picture
Offline
Last seen: 2 months 2 weeks ago
Joined: 08/06/2017 - 21:39
Posts: 19
Location: Chicago
Nitecore EC23 - Spot at Center of Beam

I received the new Nitecore EC23 today. The beam has a noticeable round, dark spot at the center. Attached is a photo, it is much more noticeable in person. Has anyone run into this before? Is this a defect in the light, or just the way the reflector projects the light?

A picture of the EC23 with his friends:

Left to right: Acebeam L16, Nitecore EC23, Nitecore MH20, Emisar D4, Nitecore EC11

Trevi_lux
Trevi_lux's picture
Offline
Last seen: 1 month 1 week ago
Joined: 09/04/2012 - 10:52
Posts: 2296
Location: Spain

My XT2CR Klarus received recently, also have this. This remember my old MT1A and MT1C of Nitecore with XP-G R5 Wink , in any case, this is only noticiable for make a pic to a white wall, in normal use is not relevant (at least for me).

bilakos10
bilakos10's picture
Offline
Last seen: 2 hours 23 min ago
Joined: 08/22/2013 - 14:25
Posts: 1303
Location: Thessaloniki, Greece

It’s probably due to the combination of the swallow reflector and the big surface area of the XHP35.
You could try sending an email at Nitecore to see what they have to say about it.

My daily deals thread: ☢ [Gearbest.com Special Deals]
If you need any coupon code, just leave a reply on the thread.

-X3-
-X3-'s picture
Offline
Last seen: 2 hours 47 min ago
Joined: 07/16/2014 - 03:28
Posts: 2688
Location: France, Angers

Does te dark spot disappear at a dstance ? If so, it means that Nitecore did a good at focusing the LED for max throw but at the price of a dark spot in close range use

"-X3-, is there any place in your house without a flashlight ?" 

My Flashlight public album (mods, emitter swaps, eye candy)

My reviews channel (French language, Olight, Thorfire, Sofirn, Lumintop : 60+ lights tested)

My personal channel (including Olight SR mini, S1, S2, S1A and S-mini disassembly)

M4DM4X blog, saves you $$$ 

zzhawk
zzhawk's picture
Offline
Last seen: 2 months 2 weeks ago
Joined: 08/06/2017 - 21:39
Posts: 19
Location: Chicago
X3 wrote:
Does te dark spot disappear at a dstance ? If so, it means that Nitecore did a good at focusing the LED for max throw but at the price of a dark spot in close range use

The fence in my yard is at 50 yards, and you can still see the spot at that distance.

I just sent an email to Nitecore, I will see what they say.

rebuswind
rebuswind's picture
Offline
Last seen: 3 weeks 4 days ago
Joined: 10/11/2017 - 01:47
Posts: 18
Location: Alberta, Canada

dark spot

Same issue here, but mine does not shows on longer distance or at least I did not notice...

my picture has been enhanced so it can show the spot better...mine is less presentable than the picture in person... 

 

rizky_p
rizky_p's picture
Offline
Last seen: 3 hours 56 min ago
Joined: 03/01/2011 - 05:06
Posts: 982
Location: Indonesia

i asked about that exact question here.

Yeah i expected this since the spec is quite similar to Nitecore Concept One which i have and i dont like the black hole with cross in the middle also the green on the corona is also ugly but not noticeable on longer distance. Despite it’s ugly beam i quite like the Concept One fits nice in hand.

I still have my Nitecore EC23 on the way probably next week.

This is the beamshot from Nitecore Concept 1, it looks like the EC23 has bigger black hole compared to Concept 1, concept one also has green cross in the middle.

SKV89
Offline
Last seen: 1 hour 15 min ago
Joined: 12/10/2017 - 12:46
Posts: 2611
Location: US

I noticed a hole in the center of the hotspot on my Acebeam H15 XHP70.2 NW version but didn’t see it in the CW version. I’m thinking of putting on some DC-Fix to diffuse it. But the flood on this thing is already insane compared to other headlamps the the Wizard and Olight H2R Nova so not sure if DC-Fix will make it overly floody.

Scallywag
Scallywag's picture
Online
Last seen: 8 min 16 sec ago
Joined: 01/11/2018 - 22:23
Posts: 441
Location: Ohio, United States

I don't notice it outdoors. I'm told DC-fix, emitter swap to XHP35 HI, or OP reflector helps. I'm not sure it can be avoided with XHP35 HD and a SMO reflector that size.

EDC Rotation: ZL SC62 | Jaxman E2L XP-G2 5A | Purple S2+ XPL-HI U6-3A | D4 w/ Luxeon V | RRT-01 
EagTac D25C Ti | DQG Slim AA Ti | UF-T1 by CRX | Olight S1 | Klarus Mini One Ti
L6 XHP70.2 P2 4000K FET+7135 | Jaxman M8 | MF02 | Jaxman Z1 CULNM1.TG | Blue S2+ w/ ML Special
In-progress: Supfire M6 3xXHP50.2 
Others: Nitecore EC23 | Nebo Twyst | Streamlight ProTac 1AA | TerraLux LightStar 100

Itsme
Offline
Last seen: 4 days 14 hours ago
Joined: 07/18/2017 - 00:47
Posts: 511
Location: Canada

All are 18650 lights except for the Acebeam L30

Acebeam
L16 has the hole
L30 has a purple circle with a yellow dot in it

Nitecore
EC23 has yellow circle
EC23 has hole (like yours)
P10GT has yellow circle
P10GT has yellow circle
MH20GT has yellow circle
MH12GT has yellow circle with hole in it
Concept 1 has hole in it
Concept 1 has purple circle

Klarus
XT2CR has hole
XT11GT has yellow circle
XT11S has yellow circle
XT12GT has yellow circle

Astrolux
S2 has hole

Zanflare
F1 has yellow circle

Sofirn
SP31 has purple circle

Lux-Perpetua
Lux-Perpetua's picture
Offline
Last seen: 3 hours 40 min ago
Joined: 03/01/2018 - 04:39
Posts: 1427
Location: Germany, 德国, ドイツ, Германия, जर्मनी

My Nitecore MH23 has the same issue as you can read here:
http://budgetlightforum.com/comment/1333999#comment-1333999

maukka
maukka's picture
Offline
Last seen: 7 hours 20 min ago
Joined: 12/31/2015 - 04:15
Posts: 1829
Location: Finland

The donut hole seems like the least of the light’s beam’s problems.

zotee123
Offline
Last seen: 1 week 2 days ago
Joined: 07/04/2018 - 20:50
Posts: 29

Itsme wrote:
All are 18650 lights except for the Acebeam L30

Acebeam
L16 has the hole
L30 has a purple circle with a yellow dot in it

Nitecore
EC23 has yellow circle
EC23 has hole (like yours)
P10GT has yellow circle
P10GT has yellow circle
MH20GT has yellow circle
MH12GT has yellow circle with hole in it
Concept 1 has hole in it
Concept 1 has purple circle

Klarus
XT2CR has hole
XT11GT has yellow circle
XT11S has yellow circle
XT12GT has yellow circle

Astrolux
S2 has hole

Zanflare
F1 has yellow circle

Sofirn
SP31 has purple circle

Add Manker MK41 HD CW to the list, mine has dark spot as well.

EDCba
Offline
Last seen: 1 day 2 hours ago
Joined: 08/25/2018 - 01:10
Posts: 160

What’s with the single post accounts that just copy one of the older posts and add a link?

Lightbringer
Lightbringer's picture
Online
Last seen: 2 min 49 sec ago
Joined: 08/30/2016 - 14:12
Posts: 8513
Location: nyc
EDCba wrote:
What’s with the single post accounts that just copy one of the older posts and add a link?

Spam, and I just marked another as such.

Another ploy is “What a wonderfully informative post, thank you. [retarded link to some garbage-site here]”.

Or the link’s buried in the signature.

Either way, just flag ‘em as spam when you see ‘em.

09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

lightwonder
Offline
Last seen: 20 hours 31 min ago
Joined: 04/11/2019 - 12:45
Posts: 35

My xhp 35 hi also has hole in it

Lightbringer
Lightbringer's picture
Online
Last seen: 2 min 49 sec ago
Joined: 08/30/2016 - 14:12
Posts: 8513
Location: nyc

Hmm, just looked back through the entire thread and didn’t see that I answered the OP.

I’ve seen that plenty of times, and it’s rather “normal” for very-well-focused lights, especially with bigger reflectors.

In the GTmini or -micro thread, I pointed it out, and someone said it might be bad, but nope, I’ve seen that in other lights as well.

Most times, the hotspot is yellowish, and the “hole” is actually slightly blue.

Only thing I can say is that it’s most pronounced in larger reflectors with small LEDs and definitely SMO and not OP.

Kinda makes sense, though, in that the hotspot is made by light thrown off the sides of the LED (straight-out is spill), so if perfectly perfectly focused, you’ll get what’s essentially a doughnut-hole in the middle.

The bigger the LED, the more off-axis light hits the reflector and blurs the hotspot, covering up the hole.

So… P30, GTmini/-micro, etc., yeah, par for the course. Nowhere near as objectionable as a big angry corona around the hotspot, and often it’s actually hard to see unless you jiggle the light, so I don’t mind. In fact, I take it as a sign that it’s perfectly focused and -centered.

09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0