| English | eng-000 |
| optical path length | |
| 普通话 | cmn-000 | 光学距离 |
| 普通话 | cmn-000 | 光程 |
| 普通话 | cmn-000 | 光程长 |
| 普通话 | cmn-000 | 光程长度 |
| English | eng-000 | light path length |
| English | eng-000 | optical distance |
| English | eng-000 | optical length |
| English | eng-000 | optical path |
| íslenska | isl-000 | ljósfræðilengd |
| русский | rus-000 | оптическая длина пути |