Final answer:
Bright Source Protection is a feature of Aviation Night Vision Imaging Systems (ANVIS) that protects the imaging tubes from bright light sources, thereby preventing damage to the equipment and maintaining pilot vision during night operations.
Step-by-step explanation:
The Bright Source Protection feature is integral to the Aviation Night Vision Imaging System (ANVIS), which is used by pilots. Its primary function is to protect the imaging tubes of the night vision goggles from exposure to bright light sources, such as headlight beams or street lamps. The system works by automatically reducing the amount of light that enters the goggles, which prevents damage to the sensitive equipment within the goggles that can be caused by sudden or prolonged exposure to bright lights. Additionally, this protects the user's eyes and retains the tactical advantage by not blinding the pilot during night operations.