| Subject | English | German |
| opt. | adjustment of the size of the aperture stop | Einstellung der Größe der Öffnungsblende |
| opt. | annular aperture stop | ringförmige Aperturblende |
| nucl.phys. | aperture stop | Blende (photo) |
| life.sc. | aperture stop | Öffnungsblende |
| life.sc. | aperture stop | Aperturblende |
| opt. | physical aperture stop | Öffnungsblende (which limits the extent of the image-forming cone of rays) |
| opt. | aperture stop | Aperturblende (which limits the extent of the image-forming cone of rays) |
| opt. | aperture stop at the centre of curvature | Öffnungsblende im Krümmungsmittelpunkt |