For several hunters around the world, the type of scope is a hot topic. There are countless factors which you need to consider when settling for one, but the most crucial decision of all is choosing between night vision vs thermal scopes.
Both thermal and night vision scopes will allow you to see what is creeping and crawling after the sun goes down. If you are having issues with wild hogs or pests, wishing to practice tactical scenarios, or wanting to see who is or what is stalking your grounds in the dark, either one of these two devices will be great for you.
As such, we will talk about why both these devices are viable competitors and what they have to offer you. It will also help you decide which amongst the two of them is better suited for your needs.
In simple words, night vision is basically the ability to see above and beyond the normal boundaries of visible light. While this may sound like a fool’s answer, it is what it is.
As human beings, we are blessed abundantly with several amazing abilities. However, seeing clearly in darkness is not amongst them. We only see the best when there is light present, more so, when it is bright enough.
That being said, even when it is dark, there is light present. Not all light is visible to us humans, though. The two different types of light which are present in the dark are often referred to as ultraviolet light and infrared light.
In the light spectrum ranging from 100 to 700 nm, light that is visible to the human eye is located right in the center of this spectrum. Ultraviolet light and infrared light are located on either side of the visible light and cannot be viewed by our eyes under regular conditions.
For us to see or take advantage of these lights, we need to use some type of external device which will detect and amplify it so that it becomes visible to us. This is where night vision devices come into play.
The way night vision devices work is quite interesting. To give you a brief explanation about this, night vision devices simply take the minimal light that is available and turn it into electricity. This then gets intensified and converted into the light again so that it can be viewed as an image.
In a night vision scope, the tube body is known as an image intensifier tube, and this is a vacuum tube. The light which comes through the objective lens in the first stage is known as photons. This will travel down through the tube and will first pass through the photocathode which will convert the photons to electrons.
These electrons will pass through the microchannel plate and get multiplied by the thousands. This plate contains millions of glass tube or microscopic channels.
The tubes have to be completely uniform in their spacing, and the density should be able to produce a sharp resolution in the image that occurs. The electrons finally pass through a phosphor screen where they are converted back into the light so that they can produce a proper image to the viewer.
Thermal imaging scopes or cameras can effectively translate heat, which is basically thermal energy, into visible light so that it can analyze the surroundings. This makes these devices quite versatile.
All mechanical equipment and living beings put out heat, and this makes them completely visible to thermal devices even in darkness. These devices are extremely precise and require only a tiny amount of heat to work effectively.
Thermal imaging camera has been used as early as the Korean War. These were originally used for combating and scouting at night.
Ever since then, these devices have gone through major improvements and today, these are used by electricians, firefighters, rescue teams in disaster areas, and law enforcement officers. These are also used extensively during building maintenance, inspection, and optimization.
The interplay of the heat getting reflected, absorbed, and even transmitted to a certain extent is what thermal imaging devices capture and evaluate. The thermal radiation level which gets emitted by a living being or an object is what is referred to as a heat signature.
When the given object is very hot, there will be more radiation getting spilled into the environment. The thermal imaging devices are well capable of distinguishing heat sources and a minimal difference in the thermal radiation. This will compile the data into a complete heat map that is distinguished by the heat levels.
Both thermal imaging and night vision scopes are considered to be a type of devices that are designed to be used at night time. The only difference is in the way these two devices work.
Night vision devices are known to be passive considering they require little light to work. While thermal imaging devices are known to be active since they rely on the heat signature and need no light.
That being said, let’s put both of these against each other to see how they fare:
When choosing between night vision vs thermal imaging scopes, it entirely depends on your needs. We hope that with the help of this article, you now have a fair understanding of how they both function, and on the basis of that, you can decide which one to choose.