how night vision cameras work when our eyes need light to see

Question

how night vision cameras work when our eyes need light to see

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Answer 1

Luckily night vision cameras don’t have human eyeballs in them.

Camera sensors do require light to detect an image, but they can be more sensitive than the human eye. A “starlight scope” for example may have increased sensitivity and a large lens to gather more light than falls into a human pupil. This is all collected and displayed to the user.

Another way is to use light the human eye can’t see. A UV lamp, like a big invisible flashlight, can be used to illuminate the scene so the camera can work.