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At the moment, night vision binoculars is visible all around the marketplace, so for folks who want to purchase night time eyesight binoculars,GD Digital ， how to buy nighttime sight binoculars?1: Look at the aperture from the night time vision telescope. The larger the aperture, the greater the viewing collection and brightness. Reasonably speaking, the bigger aperture is more helpful in reduced light problems, although the quantity superiority the greater aperture will likely increase.2: Nighttime eyesight telescope magnifying glass. For nighttime vision telescopes, magnification will be the angular magnification of the seen goal. For the same purpose zoom lens, the magnification of your telescope may be transformed. The smaller the major length of the eyepiece, the greater the magnification obtained, but the higher the magnification, the greater number of fuzzy and volatile the image is going to be.3: The sunshine collecting potential of nighttime eyesight telescopes. This is primarily when buying a telescope with night perspective functionality. Light accumulating power may be the rate from the light obtained from the telescope on the light received from the human eye.4: The field of look at the night time vision telescope. The angular diameter of the area of ​​the atmosphere that may be well imaged by a telescope is called the telescope's field of view or industry of perspective.    like：The role of night vision goggles Children love to take pictures, is it necessary to buy a camera? Factors to pay attention to when choosing night vision goggles,GD Digital ， reifmka ...ادامه مطلب

There is a small amount of natural light in the dark environment at night, such as moonlight, starlight, atmospheric glow, etc.,night vision scope， which are collectively referred to as night sky light. Because they are very faint compared to sunlight, they are also called noctilucent. The human retina is not very sensitive to light and cannot be adequately "exposed" in low light conditions. This is also one of the reasons why people cannot observe normally in a dark environment. In the dark environment at night, in addition to the existence of low light, there is a lot of infrared light. All objects in the world emit infrared light all the time, so whether it is day or night, space is filled with infrared light. But infrared rays, no matter how strong or weak, cannot be seen by humans. The night vision device uses both weak light and infrared conditions to convert the invisible light (weak light or infrared light) signal from the target into an electrical signal, and then amplify the electrical signal to convert the electrical signal into the human eye. visible light signal. Photoelectric conversion is a common way for all night vision devices to achieve night vision.  like：Night Vision Goggles Buying Reference Guide Is it uncomfortable to use night vision goggles? Matters needing attention when using night vision goggles ,night vision scope， ...ادامه مطلب