Binoculars with Interpupillary adjustment

Interpupillary adjustment

— this function is found only in binoculars, because. in monoculars, in fact, there is nothing to regulate. The most convenient use of binoculars will be if the gap between the centers of the exit pupils (in fact, between the optical axes of the eyepieces) corresponds to the distance between the pupils of the observer. However, even in adults, this distance can vary, not to mention children. Accordingly, the adjustment of the interpupillary distance allows different users to optimally adjust this distance to their own facial features.