ISO/FDIS 21094

Optics and photonics — Telescopic systems — Specifications for analogue night vision devices

Scope

This document applies to analog night vision devices such as monoculars, binoculars and bioculars that are used under extreme low light conditions, at night or in dark rooms, for observation activities, search and rescue actions, performing urgent repairs in the dark, night-time surveillance and security, night hunting and fishing (where legal), night driving and exploring dark spaces like caves or tunnels. 
This document does not cover analog night and thermal imaging vision telescopic sights and front attachments.