The light compensation principle of night vision

The light compensation principle of night vision goggles means that when using night vision goggles under low light conditions, the brightness and clarity of the image are improved through light compensation technology, so that users can better observe and identify targets. The principle of light compensation involves technologies such as photoelectric conversion, signal amplification and image enhancement. Let's take a detailed look at the light compensation principle of night vision devices.

Photoelectric conversion


Photoelectric conversion of night vision equipment refers to the process of converting light signals into electrical signals. Under low-light conditions, the night vision device's photoelectric conversion device (such as a photodiode) can capture weak light signals and convert them into corresponding electrical signals. This photoelectric conversion process is the basis for night vision devices to work, but the light signals captured under low-light conditions are often very weak, so light compensation technology is needed to enhance these signals.

signal amplification


The electrical signal obtained after photoelectric conversion is often very weak and cannot directly present a clear image. Therefore, night vision devices use signal amplification technology to enhance these weak electrical signals. The signal amplifier amplifies the electrical signal obtained after photoelectric conversion so that it reaches a certain intensity and clarity so that it can be displayed on the display.

image enhancement


Image enhancement is a key link in the light compensation principle of night vision equipment. It processes the amplified signal to improve the brightness and contrast of the image, allowing users to observe targets more clearly. Image enhancement technologies include histogram equalization, spatial domain filtering, frequency domain filtering, etc. These technologies can effectively enhance the quality of images and improve the performance and usability of night vision devices.

Conclusion


The light compensation principle of night vision devices achieves the ability to obtain clear images under low-light conditions through technologies such as photoelectric conversion, signal amplification, and image enhancement, providing important help for users to observe and identify at night or under low-light conditions. The application of light compensation principle is not only in the military field, but also plays an important role in police law enforcement, security monitoring, night driving, etc., bringing convenience and safety to people's life and work.

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