Instructables

DIY Cascade Night Vision Scope

What's the matter? Can't see in the dark? Flashlight won't work? NSA/FBI/ATF not noticing you? Pesky rodents and other pests invading your premises and getting the best of you? Never fear. I've found a great way to build affordable real night vision that works great. Actually, this thing is kickass, so if you're ready for a fun project that won't kill your bank account, then have a seat, get your snacks, and get ready to take some notes.

Basically, I've been interested in night vision for awhile. I also play airsoft (Like our page! https://www.facebook.com/Point3Airsoft), so having night vision is a highly coveted advantage at night games and is probably the dream of every Battlefield/Call of Duty playing airsofter to have working night vision. I've heard of the toys that use infrared light and cameras to see in the dark, I've seen the expensive Gen 1 units that require infrared illumination to see anything, and I've gawked and cursed at how expensive the Gen 2 and Gen 3 units are. However after doing some research about how night vision works, some sourcing for parts, making a bit of an investment, and waiting for items in the mail, I've managed to build probably the best performing DIY night vision device you can get for the money. In the end, I spent around $200 building this and probably could've saved even more money if I had cut a few corners here and there. You can only imagine how happy my inner child is every time I power mine up.

Inspiration for this project originated from the cascade night vision thread on the AR15 forum and the Australian night vision forum. Both threads are run by David Kitson (cj7hawk), so big thank you for him for answering some of my questions and providing open source information about the project. I'll provide links to the threads at the end of the instructable. :)

Before I start, please be responsible. Depending on where in the world you live, possession of night vision may actually be illegal. This can also potentially be weapons mounted, so don't be an idiot.

People who play with fire get burned; people who play with guns get shot.

Let's get started! :)
 
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FrankenPC2 months ago

Hi! Thanks again for this great build idea. I finished my a few months ago and it is very successful. One thing I want to warn people about. I poked a tiny pin hole in the lens cap so the device could be tested in daylight. This works fine. But after sitting on the shelf for a few months, the photons leaking through the pinhole have damage the intensifier leaving a small black dot in the center of the tube. So, FYI: put some electrical tape over the pinhole when in storage.

eyebot117 (author)  FrankenPC2 months ago

Ouch, hope you can still use the tube! One thing, photons can't damage an image intensifier tube without the device being powered, so really, just be mindful of leaky batteries or accidentally turning it on during storage. The tube was probably overexposed because it was used during the day-regardless of the pinhole cover-so it burned a spot on the phosphor screen.

Pinhole covers are only intended for low light applications (e.g., indoors, late dusk after sunset, early dawn before sunrise) to help further protect the tube. You're better off using a standard lens cap and using the lens aperture to control the light exposure. Bottom line, if you can see just fine without night vision, then don't power it on. :)

Thanks for trying it out and be sure to post some photos! We want to see it! :)

Sure! Here you go. I cannibalized the eyepiece from an old studio style camcorder. It has a handy flip open feature.

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jallen655 months ago
about how much $ total do you have invested into this project and what currency?
I'd love to do this project and would like a reference cost.
eyebot117 (author)  jallen655 months ago
Around $200 USD after the spinning rims. The tube was $130ish, the objective was $35, and the eyepiece was around $6-8 bucks. Add 6VDC power from a battery pack in a box with a switch and you're ready to go.
awesome, thank you.
FrankenPC8 months ago
I just bought a cascade tube from Anchor for about 108$. The value of the Euro isn't doing so well. Better for us!
google4518 months ago
Hey mate this is great very detailed . I am also an avid airsofter i was actually playing just this sunday. Nice HK SL8 btw
eyebot117 (author)  google4518 months ago
Thanks mate! Hopefully I'll get the chance soon to test it out at a night op some of the guys in our group are hosting at our field we play at! :)
FrankenPC8 months ago
Darn YOU! I HAVE to build this now! Thanks for taking the time to document the effort. The hardest part is dealing with the optics and you certainly made that easy.
eyebot117 (author)  FrankenPC8 months ago
Hahaha, once you've seen the green, you gotta have it! :) Make sure to check out the other threads if you have any questions about optics. Those guys on there have all the measurements and numbers figured out, while I just moved it a little bit until it looked sharp!
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