Optical night vision device with standard light intensifier

The disclosure relates to a compact optical device, intended for use in a night vision telescope, that includes an objective 8, a standard light intensifier 6 that rotates the image through 180{ between its entry and its exit, an eyepiece 10, and four optical deflections, one in the objective and three in the eyepiece The eyepiece, producing a single intermediate image between its entry and its exit, includes a combiner see fig. 5 whose deflection angle a depends on its optical index n and the half-field r of the device. The field width of the device is at least 40{. The invention is applicable notably to night vision binoculars for aircraft or helicopter pilots.