Night Vision Question about something weird going on in a pair of ANVIS6

[TheGerman]

My 9's don't do this, but I have tubes in it that basically can't be beat. Ran into a pair of ANVIS6s with the MX10160 tubes in it that are fairly common in these. Tubes function fine, next to no flaws in it and everything works 100%.

The weirdness I'm noticing that I don't get with my 9s, is that with these on, anytime you look past a white light source (exterior house light, car headlights, etc) you will end up with this ghosted streak/line in them for 10-15 seconds afterwards and then it goes away completely. It's basically just the stronger light temporarily getting picked up in them and it doesn't hinder the vision through them, you just end up with squiggles for a few seconds.

Is this normal for this tube/older tubes? Or what is this?

 

[SD Carpenter]

This is funny, because I thought I was crazy. It happens to me with my pvs-14 when there's a bright ambient light behind me. And when I rotate 180 degrees it disappears.

 

[TheGerman]

This is funny, because I thought I was crazy. It happens to me with my pvs-14 when there's a bright ambient light behind me. And when I rotate 180 degrees it disappears.

So it may just be 'regular' night vision tubes them.

My 9s are aviation grade with the coatings to where light/bloom are basically negated. Weird thing is with a PAS29 on them, you actually cant pick up the thermal overlay because of it.

So this may make sense then if this is the case and others have it as well.

 

[rlsmith1]

Happens to my high spec Elbits all the time (2020+ manufacture). It’s more pronounced in one tube specifically and I’m not sure what causes it. Curious if someone has a technical explanation.

ETA: didn’t see you get the lines for 10-15 seconds. Mine last 1 or 2 seconds but are there long enough to notice.

 

[jwramp]

So it may just be 'regular' night vision tubes them.

My 9s are aviation grade with the coatings to where light/bloom are basically negated. Weird thing is with a PAS29 on them, you actually cant pick up the thermal overlay because of it.

So this may make sense then if this is the case and others have it as well.

The streaking is just something that varies from tube to tube. The COTI invisibility is due to the particular coatings on your 9 objectives blocking the red light from the thermal screen, not the tubes.

Edit - I really don’t know if any of the published tube specs affect streaking, or if a particular tube type does it worse than others. Any other NV nerds that know the answer?

 

[_Windrider_]

So it may just be 'regular' night vision tubes them.

My 9s are aviation grade with the coatings to where light/bloom are basically negated. Weird thing is with a PAS29 on them, you actually cant pick up the thermal overlay because of it.

So this may make sense then if this is the case and others have it as well.

Well I’d hope your 9’s are aviation grade since that’s what they were designed for

 

[TheGerman]

Well I’d hope your 9’s are aviation grade since that’s what they were designed for

Well duh

I meant it as, they are actually certified and have the correct coatings and actual ratings/specs as opposed to just being a decent 6/9 yet not able to have been certified.

Not all 6/9 out there would pass if they needed a certification. I have a feeling these 6s wouldn’t due to the streaking. As mentioned above, even the coatings are different.

On my 9s I can stare at a low illuminated speedometer in a car and read it like it’s daytime without all the bloom and fuzziness. With 14s it would look like a bright blob and would bloom out part of your vision.

 

[silentwoods]

Sir,

Were you consuming one of the following while seeing this anomaly?

1: quality bourbon
Or
2: excessive coffee

 

[SGT Fish @ChevTec Group]

In my personal goggles I get streaking in one of my tubes. It's also the louder of the tubes I have installed, not sure if that is a coincidence or not.

I'm not sure if it is different for civilian goggles, but in Army Aviation we do not do any testing for it during the 6month (now 12month) inspections. I doubt civ maint facilities do much more. Mainly just check for unacceptable black spot blemishes, emission points, and resolution. Of course we also check for physical damage and do a re-purge.

Your objective lens is what blocks certain wavelengths of light. Which is why you can wear them in an NVG certified cockpit. Some vehicle's dashes have the right colors to working ANVIS goggles, but don't expect them all to.

 

[SGT Fish @ChevTec Group]

Also, anvis-6s usually have Class A (or C) filtering on the objective lens, which let's in a little more light (in the red part of the spectrum) than Class B filter coatings which block that.

The main difference between the two is just in how the objective lenses focus, as you can get different filtering on each type

 

[TheGerman]

Sir,

Were you consuming one of the following while seeing this anomaly?

1: quality bourbon
Or
2: excessive coffee

Both?

 

[TheGerman]

Also, anvis-6s usually have Class A (or C) filtering on the objective lens, which let's in a little more light (in the red part of the spectrum) than Class B filter coatings which block that.

The main difference between the two is just in how the objective lenses focus, as you can get different filtering on each type

Yeah its probably just these lenses. Nothing wrong, it just is what it is.

I've worn the same pair of 9s for forever now, so it stood out to me as WTF is this? when trying them on.

 

[TheHorta]

I haven’t taken my 6’s out in 18 months. I’ll have to check it out.

 

[stefan73]

All the issued sets of NVG's did it and my personal 14's will do it if a strong enough light source hits them. You get the squiggly line and then it fades away.

 

[TheHorta]

All the issued sets of NVG's did it and my personal 14's will do it if a strong enough light source hits them. You get the squiggly line and then it fades away.

I think everyone calls it “worming.”

 

[_Windrider_]

 

[stefan73]

I think everyone calls it “worming.”

That's a more accurate description.

 

[rlsmith1]

It's not if, it's how is FG applicable

 

[DeadZeppelin]

I haven’t taken my 6’s out in 18 months. I’ll have to check it out.

View attachment 7760246

Geeze, that's a hard flex!

 

[stefan73]

Geeze, that's a hard flex!

He needs to update it, too bad he doesn't have the robot anymore.