Abstract: An adapter that can connect to an objective has a receiving area for receiving the objective. The adapter has holding structures which extend essentially in a plane directed transversely to the objective axis of the objective and which are designed to engage corresponding structural elements of an adapter receptacle while the adapter is being inserted into the adapter receptacle, thereby preventing the adapter from already moving in the direction of the objective axis while the adapter is being inserted into the adapter receptacle. A device for holding an adapter, can include an adapter receptacle for receiving the adapter and an adapter and also for moving an optical element into the objective axis. An adjusting device can include the adapter and the adapter receptacle.

Abstract: An apparatus for attaching an objective to an objective mount of a microscope and for providing a connection for an electrical add-on module for the objective, thereby enabling a more versatile use of the add-on module, with fewer or no restrictions on possible combinations of add-on module and objective. The apparatus includes an adapter ring with an eye to which the objective can be fastened and which can be fastened to the objective mount. The adapter ring has a ring axis, a ring face facing the objective, electrical adapter contacts for connection to electrical mount contacts of the objective mount, contact elements arranged on a ring edge for electrical connection to the add-on module, and a module holder for the add-on module.

Abstract: An apparatus for fastening a microscope objective to a microscope component. The apparatus having a receptacle which is fastened to the microscope component and includes an annular base, a retaining collar with a lateral opening, and a ring part, with an eye for attaching the microscope objective and with two retaining flattened portions, and two opposite flattened portions which are set back relative to the retaining flattened portions the ring part configured such that its flattened portions can be pushed through the opening into the retaining collar into a pre-locking position. In the pre-locking position not all retaining flanges engage in the retaining collar, and the ring part can be rotated into a locking position in which all retaining flanges engage in the retaining collar. A securing cam is formed at the edge of the opening and a securing projection is formed at one end of one of the flattenings.

Abstract: An apparatus for mounting an objective to a microscope structural member, and a method for operating a microscope. The apparatus for mounting an objective to a microscope structural member includes a receptacle, which is mounted or mountable to the microscope structural member, a slide-in part, which is mounted or mountable to the objective and is insertable into the receptacle where it can be brought into a locked position in which there is play between the slide-in part and the receptacle, and a tensioning unit, which, in the locked position, braces the slide-in part and the receptacle against each other in order to eliminate the play. The apparatus furthermore includes a first collision detection device, which has at least one first displacement sensor for detecting a displacement of the slide-in part and/or of the objective, in each case relative to the receptacle.

Abstract: An immersion objective comprises an objective body in which optical components are accommodated, at least one immersion fluid tank and at least one objective-body coupling connection on the objective body. The immersion fluid tank can be supported in a detachable manner via the objective-body coupling connection. At least one pump is supported via the objective body, wherein the pump is arranged in order to convey immersion fluid from the immersion fluid tank to an objective front side. A control electronics component is supported via the objective body and is configured to control the at least one pump.

Abstract: An immersion set for retrofitting an immersion objective comprises at least one immersion fluid tank, at least one pump fluidly connected to the immersion fluid tank, and a control electronics unit configured at least to control the pump. A fastening device is configured to realize the load-bearing fastening of the at least one immersion fluid tank, the at least one pump and the control electronics unit on the immersion objective or on a mounting adapter for the immersion objective.

Abstract: A protective device for protecting microscope components from contact with a liquid comprises at least one objective protection ring for arrangement around an objective, wherein the objective protection ring comprises an annular contact area for contacting the objective; and a stand protector with a drainage channel for draining a liquid. The objective protection ring comprises a lower ring area located below the contact area and protruding further outwards radially than the contact area in order to form a free space in the inward direction.

Abstract: An objective-changer apparatus for a microscope system comprising an objective-transfer element with at least one objective holder for holding an objective that has been provided with an adapter, wherein the objective-transfer element moves a selected active objective into position in a transfer position in controlled fashion and an objective axis of the active objective does not coincide with the optical axis of the microscope system in the transfer position. A receiving apparatus is adjustable in the direction of the optical axis of the microscope system and can be brought into contact with the adapter. The receiving apparatus transports the active objective along a transport path in a transport direction orthogonal to the microscope system's optical axis between the transfer position and a work position in line with the microscope system's optical axis. The transport path is shorter than the extent of the objective holder in the transport direction.

Abstract: An immersion set for retrofitting an immersion objective comprises at least one immersion fluid tank, at least one pump fluidly connected to the immersion fluid tank, and a control electronics unit configured at least to control the pump. A fastening device is configured to realize the load-bearing fastening of the at least one immersion fluid tank, the at least one pump and the control electronics unit on the immersion objective or on a mounting adapter for the immersion objective.

Abstract: An immersion objective comprises an objective body in which optical components are accommodated, at least one immersion fluid tank and at least one objective-body coupling connection on the objective body. The immersion fluid tank can be supported in a detachable manner via the objective-body coupling connection. At least one pump is supported via the objective body, wherein the pump is arranged in order to convey immersion fluid from the immersion fluid tank to an objective front side. A control electronics component is supported via the objective body and is configured to control the at least one pump.

Abstract: A protective device for protecting microscope components from contact with a liquid comprises at least one objective protection ring for arrangement around an objective, wherein the objective protection ring comprises an annular contact area for contacting the objective; and a stand protector with a drainage channel for draining a liquid. The objective protection ring comprises a lower ring area located below the contact area and protruding further outwards radially than the contact area in order to form a free space in the inward direction.

Abstract: An adapter that can connect to an objective has a receiving area for receiving the objective. The adapter has holding structures which extend essentially in a plane directed transversely to the objective axis of the objective and which are designed to engage corresponding structural elements of an adapter receptacle while the adapter is being inserted into the adapter receptacle, thereby preventing the adapter from already moving in the direction of the objective axis while the adapter is being inserted into the adapter receptacle. A device for holding an adapter, can include an adapter receptacle for receiving the adapter and an adapter and also for moving an optical element into the objective axis. An adjusting device can include the adapter and the adapter receptacle.

Abstract: An objective-changer apparatus for a microscope system comprising an objective-transfer element with at least one objective holder for holding an objective that has been provided with an adapter, wherein the objective-transfer element moves a selected active objective into position in a transfer position in controlled fashion and an objective axis of the active objective does not coincide with the optical axis of the microscope system in the transfer position. A receiving apparatus is adjustable in the direction of the optical axis of the microscope system and can be brought into contact with the adapter. The receiving apparatus transports the active objective along a transport path in a transport direction orthogonal to the microscope system's optical axis between the transfer position and a work position in line with the microscope system's optical axis . The transport path is shorter than the extent of the objective holder in the transport direction.

Abstract: The invention relates to a zoom objective lens with continuously adjustable magnification, comprising five lens groups, where the first lens group, the second lens group and the fifth lens group are fixed in relation to an object. The third lens group and the fourth lens group are axially displaceable. The following conditions apply to the lens: the variable air gap between the second lens group and the third lens group decreases or has a turning point with a transition from a low to a high magnification ?, the refractive power of the second, third and fifth lens groups is positive and the refractive power of the fourth lens group is negative.

Abstract: A device for forming an immersion film between a front lens of a microscope objective and a preparation on an inverted microscope. The device includes a protection device for preventing fluid leakage from the immersion film region, and an apparatus for supplying the immersion fluid (auto-immersion) to the immersion film region. The protection device is arranged statically in the main part of the microscope stand and the means for supplying immersion fluid to the immersion film region is connected to the protection device by means of an Aquastop system.

Abstract: A device for forming an immersion film between a front lens of a microscope objective and a preparation on an inverted microscope. The device includes a protection device for preventing fluid leakage from the immersion film region, and an apparatus for supplying the immersion fluid (auto-immersion) to the immersion film region. The protection device is arranged statically in the main part of the microscope stand and the means for supplying immersion fluid to the immersion film region is connected to the protection device by means of an Aquastop system.

Abstract: The invention relates to a zoom objective lens with continuously adjustable magnification, comprising five lens groups, where the first lens group, the second lens group and the fifth lens group are fixed in relation to an object. The third lens group and the fourth lens group are axially displaceable. The following conditions apply to the lens: the variable air gap between the second lens group and the third lens group decreases or has a turning point with a transition from a low to a high magnification ?, the refractive power of the second, third and fifth lens groups is positive and the refractive power of the fourth lens group is negative.

Abstract: The invention relates to an objective lens mount (39) with specimen protection and crush protection for objective lenses (4) on a microscope, consisting of an outer objective lens collar (1) having a unit (15) for mounting on an interface of the microscope, preferably on a microscope stand, and a safety element (22) arranged spring mounted and axially movable in the objective lens collar (1), which safety element contains the objective lens (4). According to the invention, in order to maintain a definable stand-off distance between the front lens (5) of the objective lens (4) and the safety element (22) in the objective lens mount (39), a sensor (6) is provided, coupled to a control unit.

Abstract: A controller for microscope lenses for correcting spherical aberration and for adjusting particularly difficult to access microscope lenses to an optimum of imaging quality, enabling automatic adjustment of the different actuators of a microscope lens, to effect a simple, cost-effective, user-friendly, and precise balance, particularly of cover slip deviations and different base thicknesses of Petri dishes for the purposes of increasing imaging quality. At least two movable elements of a microscope objective supporting lenses or lens groups, are provided in a movable manner in the axial direction along the optical axis of the microscope objective relative to the housing of the microscope lens in a motor-actuated manner by way of respective adjusting rings. A controller externally controlled and disposed in the microscope lens is provided for storing different characteristic curves for paths of motion of the movable elements.

Abstract: The invention relates to a ring illumination device (07) for a microscope objective (01), and a microscope objective (01) provided with such a ring illumination device (07). The ring illumination device (07) has at least two LED units (11) which are accommodated in an illumination ring (17) which can be connected to the microscope objective (01). According to the invention, the ring illumination device (07) has at least one lower entrance opening (08) and at least one upper outlet opening (09) for cooling air, for cooling the LED units (11).