Last updated on April 23rd, 2023 at 11:34 pm
Night vision monoculars open up a whole world of nighttime birding activities. Many modern monoculars produce a full-color image from a long way away. But how far exactly can you see through night vision monoculars?
You can see about 1,000 yards with night vision monoculars or about 3,000’. Different monoculars may offer more or less than this depending on quality, but you can expect around this figure on average.
This Is How Far You Can See With Night Vision Monoculars
Night vision monoculars typically allow you to see objects up to 1,000 yards away, much farther than you’d be able to see with your eyes alone.
This is due to the magnification powers of the lenses and one of two technologies, optoelectronic image enhancement or digital image enhancement.
Night vision optics aren’t to be confused with thermal ones. For that, you may want to check our article on things to look for when buying a thermal monocular.
Thermal optics are ideal for birders who want to operate in complete darkness with no light.
How Do Night Vision Monoculars Work?
Night vision monoculars take in visible and infrared light, then translate the input into either a phosphor-powered or digital image.
The device uses an objective lens to take in the light and provides some amount of magnification and creates a true image.
Let’s take a look at the technology used to make night vision monoculars work.
Optoelectronic Image Enhancement
Optoelectronic image enhancement works by sensing infrared light reflected off things, then amplifying the light electrically.
It works using a series of lenses and an electronic vacuum tube that captures infrared light and translates it.
The first lens in these kinds of night vision monoculars is called the objective lens, and it captures any visible light plus some infrared light.
This light then passes through the electronic vacuum tube, where the photons convert into electrons.
The electrons then interact with a small glass disc in the vacuum tube, multiplied to create a large electric signal.
When the electrical signal hits the phosphor-coated screen at the end of the tube, the phosphorus lights up to create an image brighter than what you’d see with just the visible light.
This image enhancement creates a distinctive glowing green image and is typically used in older night vision equipment.
Digital Image Enhancement
Modern night vision monoculars typically use digital image enhancement instead of optoelectronic image enhancement.
Digital image enhancement works by converting light into a digital signal.
Light enters the objective lens and reaches a metal-oxide-semiconductor (CMOS) sensor, the same kind used in digital cameras.
The sensor creates a digital image out of the light, which is then manipulated electronically to become brighter and more magnified.
Once the digital image is enhanced, it’s sent to an LCD display that you can see through the monocular.
Bigger CMOS sensors produce higher image resolution.
Most modern night vision monoculars have a decent-sized CMOS sensor and produce 1080p HD video.
They often even produce a full-color image instead of the old green growing light.
Best Night Vision Monoculars 2021
Many high-quality, modern night vision monoculars are available on Amazon.com for purchase, including the following.
Creative XP Night Vision Monocular
The Creative XP Night Vision Monocular allows you to see in complete darkness, unlike other monoculars that require dim light to create a full image.
It uses infrared light to create a digital image on a 1.5” TFT screen.
This monocular lasts up to six hours per charge and has a viewing distance of 650’. You can zoom with this monocular up to 4x.
Night Owl Optics 5-Power Night Vision Monocular
The Night Owl Optics 5-Power Monocular offers 500x light amplification and 5x magnification, with a 50 mm objective lens.
It weighs 16 oz and focuses up to 5.7’ away.
This monocular has built-in infrared receptors to create a clear image in the dark, powered by a 3-volt lithium battery.
Night Owl iGEN Day/Night Vision Monocular
The Night Owl iGEN Day/Night Vision Monocular can be used in any amount of light, with light amplification adjustable between 18x and 1,345x.
It has three modes of infrared intelligence and a variable frame rate, plus it’s twice as sensitive as most infrared monoculars.
This monocular produces a distortion-free white and black image with a magnification of up to 2.6x.
Tips for Using Night Vision Monoculars
Once you have a night vision monocular, you need to learn how to make the most of the technology.
Consider these tips before you head out into the field with your new tool:
- Avoid water and humidity. Even though most monoculars are built to be waterproof, it’s best to take extra care to keep your device from getting wet, as water can damage monoculars.
- Ensure that you can carry your device internationally before taking it on a trip. Certain kinds of night vision monoculars are restricted by the U.S. government and cannot be taken out of the country, so be sure to check yours to make sure it’s okay before you head to the airport.
- Avoid bright lights. Even using your monoculars during daylight can damage the unit, but bright lights like flashlights or headlights are especially destructive. Some devices are even programmed to shut off in the presence of too-bright lights.
- Treat your monoculars like an expensive camera. The same rules of care apply to any device with electronic capabilities and lenses.
- Read the instruction manual. Every monocular is different, and you must take the time to read the instructions to make sure you’re getting the most out of your device.
- Never take the monocular apart. Taking your monocular apart could do serious damage to the device. You should never have to do this to clean or fix your monocular. Rather, contact the manufacturer about how to get your device repaired if necessary.
- Don’t touch the objective lens. This lens typically has a special coating that you can remove by wiping it. The oil from your fingers breaks down the material.
- Use the right batteries. Each monocular has a distinct voltage, so ensure that the batteries you choose have a compatible voltage. Otherwise, your device could seriously malfunction.
- Put your monocular away when not in use. Leaving your monocular out could expose it to several potentially hazardous accidents.