1
Joseph T Fournier Jr, Stephen J Smith, Harvey A Smith, Harry R McKinley, William E McLean: Helmet mounted display having dual interchangeable optical eyepieces. United Technologies Corporation, Richard H Kosakowski, November 13, 1990: US04969714 (50 worldwide citation)

Helmet mounted display apparatus for use in aircraft and rotorcraft includes an image source for generating images that are projected into the pilot's forward field of view by a portion of relay optics that are common to both day and night viewing and interchangeable optical eyepieces, one for dayti ...


2
Fournier Joseph T Jr, Smith Harvey A, Mclean William E, Smith Stephen J, Mckinley Harry R: A helmet mounted display having dual interchangeable optical eyepieces.. United Technologies, September 26, 1990: EP0389403-A2 (8 worldwide citation)

Helmet mounted display apparatus for use in aircraft and rotorcraft includes an image source (22,23) for generating images that are projected into the pilot's forward field of view by a portion of relay optics (24a, 25a) that are common to both day and night viewing and interchangeable optical eyepi ...