Night vision capabilities are increased with the use of IR Illumination.
The basic definition of night vision is the ability to see objects in low light.
Humans have poor relative poor night vision compared to most other mammals. Because of the limits of the human eye to see at night, night vision technology has been developing over a long time. So we use night vision devices.
Night Vision IR Illumination or night vision infrared illumination, enables a person to see light beyond the normal range when using a night vision deice.
The illuminators generate this light that is invisible to human eyes but detectable by night vision imagers.
Reviews for the Evolva Future Technology T20 IR 38mm Lens Infrared Light Night Vision Flashlight provide a great example.
Enhancing Infrared Night Vision
Since infrared light is not visible to naked eye, it is the work of the night vision device to transform it into visible light.
However, night vision devices only amplify available light. This is the principle behind the need for infrared illumination devices.
Since these devices can capture and translate this light, they make it possible to see images from where added infrared light is bouncing back. This increases the performance of night vision goggles and scopes.
Infrared light detection has been used in surveillance cameras for years. However, all CCTV cameras are not equal.
Although it has become common, you still need to make sure to select cameras that have this capability. Further, other technologies need to be incorporated to make it possible to see clear images at night.
Check the specifications of your cameras and security system to identify whether it has this capability.
For the most part, black and white surveillance cameras respond better to additional IR light. Their images are typically brighter and sharper. However, the fact that an image is sharper or brighter is not an indication of use of IR illuminators.
Pairing cameras with IR illuminators needs to be a purposeful and thought out undertaking. The manufactures of night vision and IR illumination devices will make recommendations based on expert testing.
Types of IR Illuminators
The market has provided a variety of IR illuminators.
- Filtered incandescent lamps – these incandescent lamps are usually covered with infrared filters. The aim of incorporating filters is to hold off visible light. In so doing, it does not pass to the outside environment. The challenge with holding back this light is that it generates heat. This degrades the device over a shorter period of time.
- LED illuminators – these are regarded as the most efficient and convenient type because of their ability to use LED to emit infrared. They are thus more reliable compared to the incandescent lamps.
- Laser infrared illuminators – these produce infrared energy using laser diodes. They are the most efficient and reliable IR illuminators and can thus be found in multiple devices.
These are the general workings of IR illuminators.
Their use on infrared binoculars and other devices enables enhanced night vision especially for surveillance purposes. Because of the existence of different degrees of night vision technology, different devices will have varying ratings.
Lastly, remember that you ARE NOT the only one who can see the IR Illumination.
Anyone with a night vision monocular or other device can see the illumination as well.
Be sure not to give away your position.