Dual source display apparatus.

摘要

A dual source display apparatus uses images of object formats from two sources which are combined and presented in collimated superposition to a recipient's eye against the visual background of the surrounding environment. One source is a miniature cathode ray tube (16) while the second source is a night vison monocular intensifier (6). Both sources are structurally interrelated in a lightweight helmet mounted configuration with the intensifier portion (6) being detachable so that the CRT source (2) may be used alone. The optical path from the CRT is used to provide video scenes to the recipient's eye while for low visibility conditions with high thermal noise the scene of the surrounding environment is presented from the monocular intensifier (6) via a common portion (22, 14, 8) of the same optical path.