Night vision binoculars play an important role in hunting activities. They can help hunters track and observe the movements of wild animals in the dark, and increase the success rate of hunting. This article will introduce the principle and classification of night vision binoculars, and how to use and maintain them correctly.
- Principle of night vision binoculars
The optical principle of night vision binoculars can be simply summarized as “enhancing” or “magnifying” light, making the weak light that human eyes cannot perceive clear and bright, so as to achieve the function of observing targets at night.
The optical system of night vision binoculars converts light into signals through photoelectric converter devices, then amplifies these signals through image tubes, and finally converts the amplified signals back into light signals that human eyes can perceive. The sensitivity of the photoelectric converter and the magnification and sensitivity of the image tube determine the performance of night vision binoculars.
- Classification of night vision binoculars
Night vision binoculars can be classified into the following categories according to the photoelectric converter devices used:
① Light-enhanced night vision binoculars
Light-enhanced night vision binoculars (Image Intensifier, abbreviated as II-type night vision device) are currently the most widely used type of night vision device on the market. Its working principle is to perform layer-by-layer incremental electronic amplification processing on the weak light signals entering the objective lens, and finally convert the amplified signals into high-brightness images that can be recognized by human eyes. Light-enhanced night vision devices are widely used in military, police, civil and other fields.
② Infrared night vision binoculars
Infrared night vision binoculars (Infrared, abbreviated as IR-type night vision device) are night vision devices that use infrared energy reflection to observe targets. It radiates infrared light through an infrared illuminator device, uses the infrared light absorbed or reflected by the target surface to enter the receiver device, and converts it into an image that can be recognized by human eyes through complex algorithms. Since infrared light is essentially far-infrared light, it has no obvious stimulation to human eyes, so it is another way to achieve night vision.
- Use and maintenance of night vision binoculars
- Proper storage
The night vision device is relatively precise, so it should be avoided to disassemble and repair it at home when storing it. The night vision device should be stored in a dry, ventilated, dark, dust-proof, and non-strong magnetic field place. It is not recommended to store it in high temperature, low temperature, humid and other harsh environments for a long time.
- Proper use
When using a night vision device, you should first remove the lens cap and focus the lens to achieve the best clarity. Unlike human eyes, you should maintain visual adaptation to blue conditions. During use, you should not cut off the power supply of auxiliary light sources too early, which will affect the observation experience.
- Protect lens
Night vision devices are used frequently, and lenses are very important parts that are easily contaminated by oil consumption. Always pay attention to protection during use. For example, foreign objects should be cleaned with high-purity alcohol and lens paper when cleaning poker racks. Never touch them with your hands, which will damage the coating of the lens.
- Reasonable cleaning
Night vision devices are used frequently, and lenses are very important parts that are easily contaminated by oil consumption and need to be cleaned regularly. First of all, use a blower ball to remove large particles on the surface of the lens, then use professional lens paper or professional ink to wipe and clean it. The items must be clean and clean. Improper use will damage the coating of this lens.
In summary, night vision binoculars are one of the indispensable important tools for hunting enthusiasts. Understanding the principle and classification of night vision binoculars, as well as correct use and maintenance methods, can better play its role and increase the success rate of hunting.