campo de visão angolul

field of view▼(angular extent of what can be seen)
noun
[UK: fiːld əv vjuː] [US: ˈfiːld əv ˈvjuː]

line of sight▼(A straight line along which an observer has a clear view)
noun
[UK: laɪn əv saɪt] [US: ˈlaɪn əv ˈsaɪt]