Night Vision Considerations for Preppers

PVS-14Todd’s Note: Most preppers agree that owning night vision would be a great addition to their gear.  Some might say that it is even a necessary piece!  One of the problems that many encounter though is the price point.  There are various types and models out there that vary in price and for someone who wants to purchase night vision, this could cause a lot of confusion and wasted money.  You should be well informed before putting down the money to own gear that your life might depend on.  This guest post by Adam Alm does a great job of describing the different types and pros and cons of owning that specific type of night vision.

Night vision devices often fail to make it to the top of a prepper’s priority list.  This is partly due to the cost associated with acquiring quality night vision and is also because it is difficult to know where to start when buying an unfamiliar device.  Understanding night vision and what is best for your needs can be challenging.  A great starting point is to learn the basics of how the available night vision technologies work and become aware of important considerations all preppers should keep in mind.

Night Vision Technologies

There are three basic technologies available that can aid the user to see in dark environments: standard, digital, and thermal.

Standard night vision technology creates a green tinted image and was first widely used during the Vietnam War.  It is the most widespread type of night vision and works by using a photocathode tube to amplify light.  The technology used in the photocathode tube is broken into three generations:  Gen 1, Gen 2, and Gen 3 night vision.  Both the price and quality of the image increase with each step up in generation.

Standard PositivesStandard technology offers the best low light performance for light amplification technology.  Since it has been around the longest, it is the most mature and has the widest selection of devices to choose from.  It has remained the technology of choice by the military for years, so there are options available that are designed and thoroughly tested for tactical applications.  Standard night vision also gives the best battery performance.  Most devices will operate 40-60 hours on average or more on one battery.

Standard NegativesStandard night vision will not work in total darkness without the aid of an infrared (IR) illuminator.  In very dark environments, this can limit the use of the device if you are concerned with the possibility of giving away your position to others with night vision capabilities.  In addition, standard night vision should not be used during the day as it can be damaged by exposure to bright light.  Lastly, the technology itself is inherently somewhat fragile.  Even the most durable weapon mountable devices are prone to damage due to recoil if not matched properly to the rifle.

Digital night vision technology also works as a light amplification system, but it does so by amplifying an electronic signal that is derived from incoming light.  A digital night vision device will use a CCD (charge-coupled device) or CMOS (complementary metal-oxide-semiconductor) as a light sensor that produces the electronic signal to be amplified.  This technology is nearly identical to that of a digital camera with the exception that it will detect both visible and infrared light.

Digital Positives – Newer digital devices in the $600-$1,000 range provide the best image quality to cost ratio.  They can be used both during the day as well as at night making them more versatile.  Weapon mountable digital devices also are not as susceptible to rifle recoil damage.

Digital Negatives – Digital devices have a significantly higher power requirement for operation causing them to go through batteries much faster than standard devices.  Typical battery life is between 5-10 hours and many devices require multiple batteries to achieve that lifespan.  In addition, because they work by amplifying light, digital devices have the same total darkness limitations as standard night vision.  The best digital devices will not perform as well as top quality standard technology in a low light setting. This makes them even more reliant on IR illumination for acceptable performance in low light conditions.

Thermal ImageThermal technology does not rely on light to produce an image and instead works by detecting variations in thermal energy (heat) and displaying the differences.  It is equally effective and reliable in both daylight and pitch dark conditions.

Thermal Positives – One of the biggest advantages with thermal imaging is that it does not require any light to perform.  It works in complete darkness and will never need the aid of an IR illuminator to produce an acceptable image.  Therefore, it can be effectively used as a passive device under any lighting condition, allowing use without giving away your position.  Since thermal devices rely on heat instead of light, they can detect objects through fog, brush, and other obstacles better than light amplification technologies.  People, animals, or anything warm will stand out in a thermal image which makes it perfect for finding living creatures.  Thermal devices can also provide valuable information that other night vision technologies cannot.  For example, if you are looking at a dwelling, a thermal device can detect heat escaping from the building indicating that it is being lived in, even if it is blacked out.

Thermal Negatives – The biggest downside of thermal technology is the cost.  Entry level devices cost about $2,000 and weapon mountable devices start at almost $4,000.  The cost will be significantly higher to get the level of image detail comparable to other night vision technologies.  The other consideration for preppers is the battery life.  Like digital, thermal devices require a lot of power to operate and thus, have shorter battery lives.

Other Considerations:

Besides the type of technology, there are few other very important things to consider when deciding which night vision option is best for you.  The most important is sustainability.  Any night vision device will be useless if it can’t be powered on.  Many night vision devices can only use CR123A lithium batteries for power while others use standard AA.  Some popular thermal devices only have internal rechargeable batteries.  When deciding on a device, make sure you have a way to power that device for an extended period of time.  A device that will operate on AA is preferable since AA batteries are more universal.

If you are going to use standard or digital night vision technology, it is also worth considering an IR illuminator.  While there are situations where the use of an IR illuminator might not be prudent, a high power IR illuminator will significantly improve the versatility of a standard or digital device.  If minimizing your chance of detection is important, consider an IR illuminator with a longer wavelength.  Many IR illuminators put out a bit of visible red light when turned on and can give away your position.  Longer wavelength illuminators are completely invisible to the unaided eye allowing you to use them undetected except by others with night vision technology.

If you are concerned about detection, a device with a full eyecup is also critical.  The eyecup needs to have the ability to make a seal with your face so that no light will leak when the device is turned on.  Without one, light will shine on your face highlighting your position to anyone else with night vision capability and possibly even to those without.

Final Thoughts

It is critical to have a solid understanding of standard, digital, and thermal night vision technologies when buying a device.  This will ensure that you choose the right technology that will best meet your requirements and budget.  Even if higher end devices are currently outside of your budget, basic night vision capability is better than no capability at all.  The first step is to understand the options available and important considerations so you can make a plan.

 

BIO: Adam Alm is a night vision and outdoor enthusiast.  A former Air Force fighter pilot, Adam gained night vision experience in combat missions and, more recently, with commercial night vision products.  Originally from state of Washington, he now owns and operates ViperEyes.com, a company that sells night vision devices and accessories.

This article first appeared on Ed That Matters.

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3 thoughts on “Night Vision Considerations for Preppers

  1. Dirk

    Owning five sets of different NODS, has opened my eyes to a critical force multiplier. I personally own 3 sets of PVS13s and two sets of PVS7s.

    From January 2006 until June 2010 I wore nightly a pair of PVS21s, on patrol nightly. The 7s were awesome GEN IIIS with the latest tubes. I could navigate very narrow canyon roads at speeds of 60/70 mph. For extended periods of time, with minimal lite sources

    With the PVS 14 gen IIIs I accomplished the same task but at a much higher speed, with zero light sources.

    With the PVS 21s, it was game over. If I chose, I could conduct my entire shift with zero light sources and extreme high speed, dodging deer, elk, bear , mountain lion etc etc, with plenty of time to react.

    My patrol area was the north east corner of California. Very low population and literally only a few vehicles to be concerned about.

    The nights were long and dark, and weird happenings occur nightly. I retired, and I miss Modoc Coumty.California.

    I also have several years experience with the early heat signature devices. Another agency I worked for had FLIR pods on some of our units. You could run, but you could not hide. Those FLIR units were unreal in their capacities.

    I’m saving for a hand held FLIR as I pen this. If you can afford the technology and are concerned about the future, you would be wise to invest in either source of technology. It’s that good.

    D Willia,s

  2. JB Francis

    I have used the PVS14 – and woud love to be able to afford one for personal use. While in country, I had an issue with the “other guys” permenantly borrowing my fuel for my CAAT teams. The rovers would claim that they didn’t see anything, even with PVS14s on the “entire time” (Marine LCPL time and Marine MSgt time are a bit different..)
    I rigged up a few IR light pods near my fuel pods to assist in light aplification – I used a hot shoe version of a “ghost light”, (20) IR LEDs in one unit. I set them to our mock IED kits so that they could be turned on and off with a key fob by the rovers. This part failed, as they would short out when the CAAT teams would return – one truck always left their Guardian on… Always.. So the project went lower tech with a rat trap, wire and a smoke detector…
    What I wonder is, if one was to remain in place, couldn’t I set the same set up up on the house, and then use my video camera? It has night shot, digi zoom, and even sees UV light… Kind of like the house lights I have now, just with IR lights… And I am definately going to invest in a FLIR system! I have too many cool things that I don’t get to see at night where I live now.. I know they are there, I can hear them, just not see them…

  3. Jason

    Night vision technology has been proved as a game changer in many areas, especially in the field of camera surveillance. Darkness at night can affect security cameras capturing clear videos which often mean they don’t allow you to recognize people in the video. To prevent this from happening, many analog and Ip camera providers start sell cameras with IR illumination installed. Cameras with IR capability are termed as night vision cameras which make it possible for you to see what’s going on in the dark. The major IR camera brands all over the world use high quality LED lights. These LED lights enable night vision cameras to function better in the dark. I have CCTV camera Model A26HB installed in my workplace, which gives me total assurance of safety in my absence. To know other aspects of camera surveillance it’s good to consult professionals, if need some information over alarm monitoring you can see this informative PDF http://www.mcmsecurity.com/pdf/MCM%20Security%20Alarm%20Monitoring.PDF .

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