| abstract |
Night vision goggles, characterized in that these goggles substantially consists in the combination of at least one objective part (1); at least one image intensifier tube (2), having an input side (7) on which an input image can be projected by the objective part (1), and having an output side (8) formed by a screen emitting an intensified output image of said input image within a narrow waveband emission spectrum; and two ocular parts (3, 4) each comprising the combination of at least one collimating holographic optical element (17; 18) and one beamsplitter optical element (15;16) with angular selectivity properties, these properties being used in combination with the characteristics of the emitted light of said screen. |