| Subject | English | German |
| comp., MS | directional light | diffuses Licht (A light source that is attached to a frame but appears to illuminate all objects with equal intensity, as if it were at an infinite distance from the objects. Directional light has orientation but no position, and it is commonly used to simulate distant light sources, such as the sun) |
| earth.sc. | directional light | gerichtetes Licht |
| opt. | directional light source | gerichtete Lichtquelle |
| el. | directional lighting | Beleuchtung durch gerichtetes Licht |
| tech. | high-intensity uni-directional lights | Hochleistungs-Richtstrahler |
| transp., el. | light bulbs for directional signals for vehicles | Lampen für Fahrtrichtungsanzeiger von Fahrzeugen |
| tech. | low intensity omni-directional lights | Niederleistungs-Rundstrahlfeuer |
| tech. | low intensity omni-directional lights | Mittellinienfeuer |