US 11,940,718 B2
Optical assembly having a movable lens unit
Sebastian Hitzler, Hohenahr-Erda (DE); Christian Schulz, Huettenberg (DE); Martin Kubek, Driedorf (DE); and Benjamin Deissler, Butzbach (DE)
Assigned to LEICA MICROSYSTEMS CMS GMBH, Wetzlar (DE)
Filed by Leica Microsystems CMS GmbH, Wetzlar (DE)
Filed on Aug. 12, 2022, as Appl. No. 17/886,487.
Claims priority of application No. 21192140 (EP), filed on Aug. 19, 2021.
Prior Publication US 2023/0056633 A1, Feb. 23, 2023
Int. Cl. G03B 17/56 (2021.01); G03B 17/12 (2021.01)
CPC G03B 17/565 (2013.01) [G03B 17/12 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An optical assembly comprising:
a lens unit capable of being moved along an optical axis of the optical assembly, the lens unit comprising a lens mount for holding at least one lens,
a sleeve for receiving the lens mount, the lens mount being in sliding contact with and movable in relation to the sleeve as the lens unit is moved along the optical axis, wherein
wherein the lens mount comprises one or more rings fixedly mounted onto the outer surface of the lens mount, or the sleeve comprises one or more rings fixedly mounted onto the inner surface of the sleeve, wherein the one or more rings comprises a self-lubricating material.