noun
noctovision
A technical term for an early infrared viewing system; rarely used in modern Japanese outside historical or technical contexts.
ノクトビジョンは、第二次世界大戦中に開発された暗視装置の一種です。
Noctovision is a type of night-vision device developed during World War II.
Modern general term for night-vision devices; ノクトビジョン refers specifically to an early infrared system.
Borrowed from English 'noctovision', a term coined in the early 20th century for infrared viewing technology.