Japanese night fighting relied on low-light optics

What kind of night-vision equipment did the Imperial Japanese Navy use in World War II?

It relied on high-quality low-light binoculars and optical systems, not modern electronic night vision.

A viewer asks what night-vision equipment the Imperial Japanese Navy used during World War II. It relied on very capable low-light binoculars and optical systems rather than electronic night vision in the modern sense. Their lenses gathered available light to support visual observation at night. Japan also destroyed much material at the end of the war, limiting what Allied investigators could recover.