Endoscopes — Endoscopes médicaux et dispositifs d'endothérapie — Partie 3: Détermination du champ d'observation et de la direction d'observation des endoscopes optiques

This document applies to endoscopes designed for use in the practice of medicine. It specifies measurement requirements and describes two test methods for measuring the field of view and direction of view of endoscopes. Method A uses the distance from the distal window to calculate the field of view. Method B uses the distance from the entrance pupil. Other test methods can be used if they obtain equivalent results.