| English | German |
| focal plane | Kaustik |
| focal plane | kaustische Flaeche |
| focal plane | Brennflaeche |
| London plane | ahornblaettrige Platane (Platanus hybrida, Platanus x acerifolia, Platanus x hispanica) |
| plane polarised light | linear polarisiertes Licht |
| slip plane | Mikrostauchlinie |
| vertical plane | senkrechte Ebene |