DIN ISO 8600-3:2004
光学和光学仪器.医用内窥镜和内窥镜附件.第3部分:光学内窥镜观察方向和观察区域的测定
Optics and optical instruments - Medical endoscopes and endoscopic accessories - Part 3: Determination of field of view and direction of view of endoscopes with optics (ISO 8600-3:1997 + AMD 1:2003)