A night vision monocular is a device that allows the user to see in low light or complete darkness. It uses infrared technology to amplify available light and project it onto a screen, giving the user a clear image of their surroundings.
Generation 1 night vision devices are the earliest and most basic type of night vision technology. They typically use an image intensifier tube to amplify the available light, and offer a resolution of around 40-45 lp/mm. These devices are the most affordable and widely available, but also have the lowest image quality and are the most sensitive to bright light. They are generally not recommended for professional use, but can be useful for basic nighttime activities such as camping, hunting monocular, or surveillance.