Patent ID: 11933972
Assignee: LEICA MICROSYSTEMS CMS GMBH
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. The optical system of claim 6, further comprising:
a focusing device configured to move the first objective along an optical axis thereof relative to the object, as a result of which a distance between the first objective and the Kepler telescope system changes,
wherein the three lens units of the zoom optical unit are movable along the optical axis independently of one another such that, as the distance between the first objective and the Kepler telescope system changes, the focal plane of the first objective that faces the image side of the first objective is imaged onto the focal plane of the second objective that faces the object side of the second objective while maintaining the magnification adjusted by the zoom optical unit and an afocality of the telescope system.