Have you ever encountered the following when using a weapon light?
- Glaring out
- White out
Those are called Photonic Barriers, which can significantly affect your low light tactics and tactical light choices.
It affects night vision, IR, LED light & visible laser.
In this article, we gonna learn about what is photonic barrier, and how to combat it to gain advantages in low light situations, and we also included some learning resources from other experts at the end.
What Is Photonic Barries
In layman’s term, Photonic Barries is a barrier created by a light source.
It’s the overwhelming hot spot a threat sees when you shine a powerful light on their faces.
- Can’t see what’s around or behind
- Can’t positively target identification
- Can’t positively acquire target or engage back
- Less powerful light can’t beat photonic barriers
However, your opponents can do the same thing to you with their lights, where you are being blinded and disoriented.
How To Combat Photonic Barriers
There are 3 ways to combat photonic barriers in low light situations.
- Get a light that has ENOUGH horsepower to push through fog, backlight and other urban light sources. (Why high lumen & candela light is trending)
- Avoid being lit up
- Under night vision, shine a stronger IR light back
Seeing clearly VS barely seeing it makes a huge difference, and sometimes it’s life and death.
Please see the illustration below:
A Weak Light Against Photonic Barrier
- Can’t see anything around or behind
- Can’t positively ID anything
- They have tactical advantages over you
A Powerful Light Against Photonic Barrier
- Stronger light beats the photonic barrier created by less intense light
- Able to lit up what’s behind and around
- Now you have tactical advantages over them
Basically you need a strong light that can burn through a photonic barrier, and later in this post we will talk about the light specs you need to look for.
Why Lumen Intensity Matters When Combating Photonic Barriers
Lumen is the preferred measurement of total brightness output by a light. The brighter it is, the more you can see and the faster you can make tactical decisions.
As far as combating photonic barriers, higher lumen creates higher lux.
Lux is the area intensity of the light measured as 1 lumen / squared meter.
- Anything over 10 – 1,000,000+ are considered photopic
- Anything between 1 and 10 is called diurnal Threshold
- Anything from 10 to 0.01 are considered mesopic
- Anything from 0.01 to 0.000001 are considered Scotopic
There are few technical terms to know before we dig deeper:
- Scotopic – Full starlight, full darkness, overcast darkness
- Mesopic – Moon light, Common street light
- Photopic – Daylight, Full color, Perceivable contrast and hue
Human generally suck at seeing in the dark, and we need artificial light to help us see better.
If you encounter these type of light sources head on such as headlights, street lights, indoor lights, street lamps or other source of light, the more powerful your light will need to be to overcome these photonic light barriers.
In another word, a 500 lumens VS a 2000 lumens light in a head on firefight is gonna be very rough for the guy with the 500 lumens light.
Fun fact – The Human eye lacks a Taletum Lucidum, which is a layer of tissue behind the retina that reflects visible light back through the retina to increase the amount of light available to the photoreceptors.
Some animals have it, not for humans.
How Does Photonic Barrier Affect Night Vision Devices ?
Same concept applies when dealing with night vision IR technologies. A stronger IR light pointing back at you will have photonic barrier.
A IR light or laser that have higher output measured in milliwatts (mW) will break through photonic barrier by a weaker IR light.
Recommended Tactical Lights To Burn Through Photonic Barriers?
Bottom Line – As long as your light has more horspower than the light source shining back at you, you can beat the photonic barrier.
A 1000+ lumens and 13000 – 60000 candela light will definitely do the trick! But there are way more powerful ones out there…
This is another reason that higher lumen & candela lights are so much more popular in the low light community. You can buy one of these lights by visiting these ultimate buyers’ guide on our site.