U.S. Philips Corporation

Jean-Luc Espie

Fernand R Loy

Optical axes of the day path and of the night path extend in a sagittal plane (5,9) of the carrying vehicle and the passage from the night path to the day path or conversely is effected by means for displacing a first reflector parallel to the plane in order that the input light beams are directed to the optical axis of the day path or of the night path. A second output reflector along the optical axis for the day path is simultaneously displaced from an active position, for viewing by day, to a concealed position, for viewing by night, when said first reflector is displaced to deflect said beams along said night path.

Combined night/day viewing apparatus

The apparatus contained in a single housing (1) comprises a first movable input reflector (4) and a second input reflector (5) for causing the input light beams to deviate along the optical axis (11) of the night path and optical axis (7) of the day path, respectively. The night path is constituted by an objective (12), a light intensifier tube (13) and a bent ocular (14) and the day path is constituted by an optical system having a second output reflector (9). The optical axes of the night path and of the day path extend in a sagittal plane (7, 11) of the carrying vehicle; on the other hand, the first input reflector and the second output reflector are alternately concealable by manipulation of the second output reflector. For viewing by night the first input reflector in the active position is situated before the second input reflector, the second output reflector being in the concealed position. For viewing by day the second output reflector in the active position is situated behind the bent ocular, the first input reflector being in the concealed position.

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Chatenay Malabry, France

Jean-Luc Espie