| Subject | English | German |
| opt. | decentring of a lens component | Dezentrierung einer Objektivlinse |
| opt. | lens component | Objektivglied (a component of two or more lens elements which makes up a part of a complete optical system; also applied to separate uncemented lenses used on their own in an optical system) |
| opt. | lens component | Linsensystem (a component of two or more lens elements which makes up a part of a complete optical system) |
| opt. | lens component | Kittglied (a component of two or more lens elements which makes up a part of a complete optical system; also applied to separate uncemented lenses used on their own in an optical system) |
| opt. | mounting of the lens component | Fassung der Objektivlinse |
| opt. | moving component of a lens | bewegliche Linse eines Objektivs |
| opt. | separation between lens components | Linsenabstand |
| opt. | separation change between the lens components of a zoom objective | Änderung des Abstandes zwischen den Linsen eines Varioobjektivs |