# US 10,768,405 B2 · Microscope having an objective-exchanging device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,768,405 B2 - Document ID: US10768405B2 - Status: Granted - Kind: B2 - Application number: 15/772,024 - Filed: 2016-10-25 - Published: 2018-08-16 - Granted: 2020-09-08 - Earliest claimed: 2015-10-28 - Assignees: Carl Zeiss Microscopy GmbH - Applicants: Carl Zeiss Microscopy GmbH - Inventors: Peter Schacht; Hubert Wahl; Nils Langholz; Tobias Hackel - Web page: https://patentgrep.com/patent/US10768405B2 ## CPC - G02B 21/248: {objective (or ocular) turrets} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract The invention relates to a microscope (12) having an objective interchange apparatus (22) comprising a holder (21) for receiving a number of objectives (1) at respective holder positions (21.n) and an objective receptacle (11) which is configured for receiving an objective (1) and is arranged in an optical beam path (13) of the microscope (12). The microscope (12) is characterized by an objective delivery device (20) which is configured for transporting in each case a selected objective (1) having an objective retainer (3) between its holder position (21.n), which is delivered to a transfer position (ÜP), and the objective receptacle (11), wherein the objective receptacle (11) remains in the optical beam path (13) during the transport of the objective (1). The objective retainer (3) has an outer centering diameter (10) as a reference surface, which diameter is guided against a lateral reference surface located in the objective receptacle (11) such that a reproducible positioning perpendicular to an optical axis (4) of the microscope (12) may be achieved. ## Claims ### Claim 1 A microscope comprising: an objective receptacle; an objective interchange apparatus, the objective interchange apparatus including: a holder for receiving a plurality of objectives at respective holder positions, wherein each objective includes an objective retainer having an outer centering diameter as a reference surface and wherein the objective retainer of each objective has at least one planar support surface that extends orthogonally with respect to an optical axis of the objective when the objective is located in the objective receptacle, wherein the objective receptacle is configured for receiving an objective and is arranged in an optical beam path of the microscope; an objective delivery device configured for transporting a selected objective between the holder position of the selected objective and the objective receptacle; and a clamping apparatus configured for retaining the objective in a use position in the objective receptacle in a spatially fixed manner, wherein the clamping apparatus is formed by an abutment surface of the objective receptacle and at least one clamping element, wherein the objective retainer of the objective, when in the use position, is clampable by way of its planar support surface against the abutment surface by the clamping element, wherein the objective receptacle is configured to remain in the optical beam path during the transport of the objective, and wherein the objective retainer of the selected objective and the objective receptacle are configured such that the centering diameter of the objective retainer is guided against a lateral reference surface located in the objective receptacle, such that a reproducible positioning of the selected objective perpendicular to an optical axis of the microscope is achieved, and wherein the objective delivery device includes a driver and wherein the objective retainer includes a coupling region configured to releasably connect to the driver. ### Claim 2 (depends on 1) The microscope of claim 1, wherein the holder is configured to translate holder positions in a linear direction to at least one transfer position. ### Claim 3 (depends on 1) The microscope of claim 1, wherein the holder is configured to translate holder positions in a rotational direction to at least one transfer position. ### Claim 4 (depends on 3) The microscope of claim 3, wherein the holder is rotatable about an axis of rotation and the axis of rotation is inclined with respect to the optical beam path of the microscope. ### Claim 5 (depends on 1) The microscope of claim 1, wherein the objective retainer includes electrical contacts. ### Claim 6 (depends on 1) The microscope of claim 1, further comprising: a stand configured as an upright or an inverted stand. ### Claim 7 (depends on 1) The microscope of claim 1, further comprising: a stand configured for holding the selected objective in an orientation inclined with respect to the optical beam path of the microscope. ### Claim 8 A microscope comprising: an objective receptacle; an objective interchange apparatus, the objective interchange apparatus including: a holder for receiving a plurality of objectives at respective holder positions, wherein each objective includes an objective retainer having an outer centering diameter as a reference surface and wherein the objective retainer of each objective has at least one planar support surface that extends orthogonally with respect to an optical axis of the objective when the objective is located in the objective receptacle, wherein the objective receptacle is configured for receiving an objective and is arranged in an optical beam path of the microscope; an objective delivery device configured for transporting a selected objective between the holder position of the selected objective and the objective receptacle; and a clamping apparatus configured for retaining the objective in a use position in the objective receptacle in a spatially fixed manner, wherein the clamping apparatus is formed by an abutment surface of the objective receptacle and at least one clamping element, wherein the objective retainer of the objective, when in the use position, is clampable by way of its planar support surface against the abutment surface by the clamping element, wherein the objective receptacle is configured to remain in the optical beam path during the transport of the objective, and wherein the objective retainer of the selected objective and the objective receptacle are configured such that the centering diameter of the objective retainer is guided against a lateral reference surface located in the objective receptacle, such that a reproducible positioning of the selected objective perpendicular to an optical axis of the microscope is achieved, and wherein the clamping element is connected to a clamping element drive and is movable in a controlled fashion in the direction of the optical beam path of the microscope using the clamping element drive. ### Claim 9 (depends on 8) The microscope of claim 8, wherein the objective delivery device includes a driver and wherein the objective retainer includes a coupling region configured to releasably connect to the driver. ### Claim 10 (depends on 8) The microscope of claim 8, wherein the holder is configured to translate holder positions in a linear direction to at least one transfer position. ### Claim 11 (depends on 8) The microscope of claim 8, wherein the holder is configured to translate holder positions in a rotational direction to at least one transfer position. ### Claim 12 (depends on 11) The microscope of claim 11, wherein the holder is rotatable about an axis of rotation and the axis of rotation is inclined with respect to the optical beam path of the microscope. ### Claim 13 (depends on 8) The microscope of claim 8, wherein the objective retainer includes electrical contacts. ### Claim 14 (depends on 8) The microscope of claim 8, further comprising: a stand configured as an upright or an inverted stand. ### Claim 15 (depends on 8) The microscope of claim 8, further comprising: a stand configured for holding the selected objective in an orientation inclined with respect to the optical beam path of the microscope.