IR halo ring issue in a IPC-B52IR-Z12E S2.

X

xplorer

Pulling my weight
Jul 6, 2020
85
133
Michigan
Camera sold as IPC-B52IR-Z12E S2, Under device info it Identifies as IPC-HFW5241E-Z12E-S2

System Version V3.100.0000000.5.R, Build Date: 2023-05-09

Camera suffers from a full circle halo from its own IR illuminators.

Sample picture,

Please note that here I added the red circle approximating what would be the I.D. of the halo.

Cam19 ir ring.jpg

Same image again and without my added red ring.

cam 19.jpg

Troubleshooting done thus far,

Wash the lens/front glass to be sure its clean?
It is spotless.

Verify that there is nothing near it that could possibly induce an IR bounce-back?
No nothing, plus the the built in "visor" on top is slid and locked all the way back as far as it goes.

Testing strongly suggests that the effect is caused by all 4 emitters equally, not limited to one pair or just one out of alignment for example. if that is even possible. To me it seams like a shield is missing or slid out of place?

Open to suggestions on what I should try to correct the problem.
 
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How is it mounted?

Can you show a picture looking back at the camera?

I have a buddy who has his mounted in a custom birdhouse. If the lens isn’t pushed out enough, he gets that identical ring from IR glare off the enclosure
 
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My money is on IR bounceback from the metal roof down at the lower left.
 
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I am leaning with it being IR bounce off that metal building as well.

Slight chance that the IR ring/gasket is misplaced, but it rare to see that in bullets and usually only happens in dome cameras.
 
Personally don't think it's the shed. Normally would see good light on roof, it looks far enough away.

Looks like light reflection off front lens caused by ir plate not being installed correctly.. or something close to camera housing not in shot reflecting light that is bouncing down lens.

Also could be caused by outside housing being cold and inside warming. If say camera was off in the cold when returning power the warm of electronics causes inside fogging until camera temps become equal.

To understand better seeing picture of camera zoomed all way in and all the way out will help understand the issue. Will expand contract change shape and all are clues to the cause.
 
It would take 30 seconds to rule out the shed roof and not have to touch the camera.......throw a dark colored tarp over it.:headbang:
 
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This is an older model but same design, my guess is might have used same design. While so many others will say camera design not possible to have inside ir issues and I have seen it personally in again different but same design camera. This dahua and my guess might be like yours has the ir holding the camera lens divider to glass. In my case in shipping to end user or bad install either way it was shifted enough that the ir was bouncing to the glass and by design I would've thought impossible. After adding a thin black felt to edges of lens cover and putting the IR board back in the issue was gone.

Not saying that is your issue but that was overall look of halo

Could be shed, maybe just enough light off one of the ridges to reflect back to bounce down throat of lens.

Anyway would double check ir plate make sure it's mounted to face snug.
 

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I took it down and looked at it after seeing the image Revo2Maxx posted, I didn't know the plastic cover over the IR lights could be so easily removed.

I found that flimsy piece of plastic had dirt in behind it. Haven't tested it yet as the weather changed cold and hard to tell in the house, however I feel confident that is what caused the halo effect. Outdoor test to follow.

The roof on that metal shed? a night shot you guys can't tell, covered with a nice rust patina nothing reflective about it!
 
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Doesnt have to be mounted to test. Just sit in on something looking out without obstruction

I think it was/is reflection from soffit? or something close above, OR that bright thing at 3 o'clock in the picture that IR is bouncing off of

Good news is it may only take a small aim adjustment to get rid of it if so
 
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Anything within three feet and in forward of camera front plane can bounce back enough IR to create a halo.
I've been unpleasantly surprised a few times by nearby objects that I thought would be far enough lateral, but proven to be an issue.

Solution was moving camera forward or removing object creating bounce back.
 
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Cleaning behind the plastic cured the problem,

no halo.jpg

Had thin film on the back of the plastic, like it had been wet/dried wet/dried over and over each time leaving a little behind, some tree junk in the mix and dust. Hard to see it until cleaning it, couldn't see it at all from the outside with the cover in place on the camera, it looked clean from the outside.
Put it back up in the same place and no more halo.

I moved it to that location after it had been run as a plate reader up here by the house, still on a different tree, it had been zoomed 3/4 of the way in from new out of the box the day it arrived.
I didn't run it at night at wide angle so the build up over time didn't come to light until I moved it, I wanted to see how well it would light up a dark field no other light. And to see if it would trigger on wildlife.

The other camera seen in the image is 160' forward of this one, this one can get a closer shot of the deer on that feed block (Center image) than it can from where it is! That one is only about 30' from that block. A IPC-HFW2231T-ZS, I'd love to put one of the T5442T-ZE back there but they don't trigger on animals, the 2231 does without using MD.

For the time being at least, one of them 35 dollar Vigilant VSR-60-02MP1 cams is happily getting them plate numbers in its place!
 
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xplorer said:
Cleaning behind the plastic cured the problem,

View attachment 219769

Had thin film on the back of the plastic, like it had been wet/dried wet/dried over and over each time leaving a little behind, some tree junk in the mix and dust. Hard to see it until cleaning it, couldn't see it at all from the outside with the cover in place on the camera, it looked clean from the outside.
Put it back up in the same place and no more halo.

I moved it to that location after it had been run as a plate reader up here by the house, still on a different tree, it had been zoomed 3/4 of the way in from new out of the box the day it arrived.
I didn't run it at night at wide angle so the build up over time didn't come to light until I moved it, I wanted to see how well it would light up a dark field no other light. And to see if it would trigger on wildlife.

The other camera seen in the image is 160' forward of this one, this one can get a closer shot of the deer on that feed block (Center image) than it can from where it is! That one is only about 30' from that block. A IPC-HFW2231T-ZS, I'd love to put one of the T5442T-ZE back there but they don't trigger on animals, the 2231 does without using MD.

For the time being at least, one of them 35 dollar Vigilant VSR-60-02MP1 cams is happily getting them plate numbers in its place!
Click to expand...
Looks great, something I would look at before to long is replacing the Gel packs in the camera body. Might be a moisture issue over time. With my weather type exposed cameras I change out every year. Some people have never changed them but if I don't I notice fogging some dry up others will pool water in the glass.
 
xplorer said:
Cleaning behind the plastic cured the problem,

View attachment 219769

Had thin film on the back of the plastic, like it had been wet/dried wet/dried over and over each time leaving a little behind, some tree junk in the mix and dust. Hard to see it until cleaning it, couldn't see it at all from the outside with the cover in place on the camera, it looked clean from the outside.
Put it back up in the same place and no more halo.

I moved it to that location after it had been run as a plate reader up here by the house, still on a different tree, it had been zoomed 3/4 of the way in from new out of the box the day it arrived.
I didn't run it at night at wide angle so the build up over time didn't come to light until I moved it, I wanted to see how well it would light up a dark field no other light. And to see if it would trigger on wildlife.

The other camera seen in the image is 160' forward of this one, this one can get a closer shot of the deer on that feed block (Center image) than it can from where it is! That one is only about 30' from that block. A IPC-HFW2231T-ZS, I'd love to put one of the T5442T-ZE back there but they don't trigger on animals, the 2231 does without using MD.

For the time being at least, one of them 35 dollar Vigilant VSR-60-02MP1 cams is happily getting them plate numbers in its place!
Click to expand...


Weird, on the back of the plastic covering, inside on the surface thats not exposed to the outside, a film and dirt/dust. in a circle.
 
Yeah, I figured it was the inside by that faint halo. Quality control issue that wasn't caught.
 
d5775927 said:
Is there a guide how to fix the same issue in a Dahua turret?
Click to expand...

It would be the same process - the black part around the lens pops off easily. Remove it and see if the halo goes away. If it does, then the plastic is bent just enough that it is causing IR reflection. Clean and slightly reshape so that it is flush.

But keep in mind this is a rare situation. The external gasket around the lens is usually "raised" enough that some slight imperfection in the cosmetic black cover wouldn't create IR bounce.
 
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