CN111796409A - Objective lens adjusting device, imaging assembly and microscope - Google Patents

Abstract

The invention relates to an objective lens adjusting device, an imaging assembly and a microscope, wherein the objective lens adjusting device is arranged on an objective lens and comprises: a first sleeve having a mounting member for fixedly coupling with an axial end of the objective lens; the second sleeve is used for surrounding the objective lens along the circumferential direction, a gap exists between the outer surface of the objective lens and the inner surface of the second sleeve along the radial direction, and the lower end face of the first sleeve is placed on the upper end face of the second sleeve along the axial direction; the inner surface of the third sleeve and the outer surface of the first sleeve have a gap along the radial direction and are in threaded connection with the outer surface of the second sleeve; and the adjusting piece is arranged on the third sleeve and used for driving the first sleeve to translate on the upper end face of the second sleeve along the radial direction. The objective lens adjusting device can realize both concentric and parfocal.

Description

Objective lens adjusting device, imaging assembly and microscope

Technical Field

The invention relates to the technical field of microscopes, in particular to an objective lens adjusting device, an imaging assembly and a microscope.

Background

The microscope is an optical instrument formed by one lens or a combination of a plurality of lenses, and is widely applied to the fields of medical health, biological detection, metallographic detection, integrated circuit detection and the like. The sample is typically placed on a stage and viewed by movement of the stage, e.g., in the X and Y directions.

For example, chinese patent publication No. CN104423027A discloses a microscope including a recording unit having a magnifying imaging optical unit and an image module for recording a plurality of images of a sample at a first image frequency, and a digital evaluation unit to which the recorded images are supplied, and which performs predetermined image processing based on the recorded images and as a result generates a plurality of output images at a second image frequency which is less than or equal to the first image frequency and which can be transferred to an output unit for representation.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide an objective lens adjusting device mounted on an objective lens, comprising:

a first sleeve having a mounting member for fixedly coupling with an axial end of the objective lens;

the second sleeve is used for surrounding the objective lens along the circumferential direction, a gap exists between the outer surface of the objective lens and the inner surface of the second sleeve along the radial direction, and the lower end face of the first sleeve is placed on the upper end face of the second sleeve along the axial direction;

the inner surface of the third sleeve and the outer surface of the first sleeve have a gap along the radial direction and are in threaded connection with the outer surface of the second sleeve;

and the adjusting piece is arranged on the third sleeve and used for driving the first sleeve to translate on the upper end face of the second sleeve along the radial direction.

Optionally, the method further comprises: the elastic piece is arranged on the upper end face of the first sleeve.

Optionally, the lower end surface of the second sleeve is provided with at least one notch along the circumferential direction.

Optionally, the adjusting member includes a screw mounting hole provided on the third sleeve, and a set screw provided in the screw mounting hole, and the screw mounting hole extends in the radial direction.

Optionally, the number of the screw mounting holes is at least two, and the screw mounting holes are arranged along the circumferential direction.

Optionally, the resilient member is a three wave-peak gasket.

The present invention also provides an imaging assembly comprising: installing a reference plate; the axial end of the objective lens is opposite to the installation reference plate along the axial direction; in the objective lens adjusting device according to any of the above claims, an axial end of the third sleeve is mounted on the mounting reference plate, and the first sleeve is sleeved at an axial end of the objective lens.

Optionally, an elastic member is disposed between the upper end surface of the first sleeve and the mounting reference plate along the axial direction, and the elastic member abuts against the upper end surface of the first sleeve and the mounting reference plate, respectively.

Optionally, at least two objective lens adjusting devices are arranged on the mounting reference plate along the circumferential direction.

The present invention also provides a microscope comprising: an imaging assembly according to any preceding claim.

As described above, the present invention provides an objective lens adjusting device mounted on an objective lens, comprising: a first sleeve having a mounting member for fixedly coupling with an axial end of the objective lens, the mounting member being, for example, an internal thread of the first sleeve, the axial end of the objective lens having an external thread, the first sleeve being threadedly coupled with the objective lens; the second sleeve is used for surrounding the objective lens along the circumferential direction, a gap exists between the outer surface of the objective lens and the inner surface of the second sleeve along the radial direction, and the lower end face of the first sleeve is placed on the upper end face of the second sleeve along the axial direction; the inner surface of the third sleeve and the outer surface of the first sleeve have a gap along the radial direction and are in threaded connection with the outer surface of the second sleeve; and the adjusting piece is arranged on the third sleeve and used for driving the first sleeve to translate on the upper end face of the second sleeve along the radial direction. The objective lens adjusting device can realize both concentric alignment and parfocal alignment.

In order that the foregoing and other objects, features, and advantages of the invention will be readily understood, a preferred embodiment of the invention will be hereinafter described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a side view of a microscope according to an embodiment of the present invention;

FIG. 2 is a first side view of a microscope head apparatus according to an embodiment of the present invention;

FIG. 3 is a first perspective view of a lens portion of the microscope of an embodiment of the present invention;

FIG. 4 is a second side view of the microscope head apparatus according to an embodiment of the present invention;

FIG. 5 is a second perspective view of the microscope head apparatus according to the embodiment of the present invention;

FIG. 6 is a perspective view of an imaging assembly in the micro-lens device according to the embodiment of the invention;

FIG. 7 is a side view of an imaging assembly in a microlens assembly apparatus according to an embodiment of the present invention;

FIG. 8 is a top view of an imaging assembly in the microlens assembly apparatus according to an embodiment of the present invention;

FIG. 9 is a first perspective view of an objective lens adjusting apparatus according to an embodiment of the present invention;

FIG. 10 is a second perspective view of an objective lens adjusting device according to an embodiment of the present invention;

FIG. 11 is a side view of an objective lens adjusting apparatus according to an embodiment of the present invention;

fig. 12 is a sectional view of an objective lens adjusting device according to an embodiment of the present invention;

FIG. 13 is a second perspective view of an imaging assembly in accordance with an embodiment of the present invention;

FIG. 14 is a side view II of an imaging assembly according to an embodiment of the present invention;

FIG. 15 is a first perspective view of an objective turret according to an embodiment of the invention;

FIG. 16 is a second perspective view of an objective turret according to an embodiment of the invention;

FIG. 17 is a first side view of an objective turret according to an embodiment of the invention;

FIG. 18 is a top view of an objective turret according to an embodiment of the invention;

fig. 19 is a second side view of the objective lens turret according to the embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

Referring to fig. 1 to 3, the present invention provides a microscope head apparatus 10 mounted on a microscope 1. In the present embodiment, the microscope head device 10 includes: an imaging assembly 11, a first slide 12 and a second slide 13 are arranged in this order along a first direction (indicated by the X-direction in fig. 2 and 3). Wherein the first slide 12 extends in a second direction (indicated by Y-direction in fig. 3), the second direction and the first direction being perpendicular to each other, the first slide 12 and the second slide 13 cooperating with each other, the second slide 13 being slidable in the second direction with respect to the first slide 12, and the first slide 12 and the second slide 13 abutting at least during movement of the belt imaging assembly 11 in the second direction with respect to the first slide 12.

Further, referring to fig. 3 and 4, the microscope head device 10 further includes: and a first connecting piece 33, wherein the first connecting piece 33 is at least partially positioned between the second sliding piece 13 and the imaging assembly 11, and the second sliding piece 13 is connected with the imaging assembly 11 through the first connecting piece 33.

Since the first slide member 12 is located between the imaging assembly 11 and the second slide member 13, the weight of the imaging assembly 11 (shown by F1 in fig. 3) is transmitted to the second slide member 13 through the first connecting member 33, so as to generate a pressure force (shown by F2 in fig. 3) on the second slide member 13, and the imaging assembly 11 is located at the front side of the second slide member 13, during the movement of the imaging assembly 11 relative to the first slide member 12 in the second direction, the first slide member 12 and the second slide member 13 are attached, so that the second slide member 13 is subjected to the pressure force (shown by F2 in fig. 3) rather than the tensile force, and the second slide member 13 can resist the pressure force, so that the microscope head device 10 is firm and has a long service life.

It should be noted that the type of the sliding member of the present invention is not limited, and the manner of the sliding member being engaged is different, and the sliding member can slide relatively. In this embodiment, the first sliding member 12 is a sliding rail, the second sliding member 13 is a sliding block, and the second sliding member 13 is sleeved on the first sliding member 12 to realize mutual cooperation. In other embodiments, other types of slides are possible, such as guide rods and sliding sleeves.

Further, the microscope head device 10 of the present invention further includes: and the driving assembly is arranged along the second direction, and is connected with the second sliding piece 13 and used for driving the imaging assembly 11 to move relative to the first sliding piece 12 along the second direction. Referring to fig. 3 and 4, in the present embodiment, the driving assembly is a screw assembly, but is not limited thereto, and in other embodiments, the driving assembly is a linear motor. In this embodiment, the driving assembly includes: a screw rod 30 extending in the second direction; and a lead screw nut 31 sleeved on the lead screw 30, wherein the lead screw nut 31 is connected with the second sliding part 13 through a second connecting piece 32. Therefore, the lead screw 30 and the lead screw nut 31 are matched to convert the circumferential motion into the linear motion, the lead screw nut 31 moves along the second direction relative to the lead screw 30 to drive the second connecting piece 32 to move along the second direction, and then the second sliding piece 13 is driven to move along the second direction, and the second sliding piece 13 drives the imaging assembly 11 to move along the second direction relative to the first sliding piece 12.

With continued reference to fig. 3 and 4, the microscope head device 10 of the present invention further includes: a support plate 40, the support plate 40 being located between the imaging assembly 11 and the first slide 12 in a first direction (indicated by the X-direction in fig. 3); the two first sliding parts 12 are arranged on the supporting plate 40 at intervals along a third direction (shown as a Z direction in fig. 3), the screw rod 30 is located between the two first sliding parts 12, and the first direction, the second direction and the third direction are perpendicular to each other.

In this embodiment, the screw 30 is supported on the supporting plate 40 through a first supporting member, the first supporting member is connected to the supporting plate 40, and the screw 30 is connected to an output shaft of the first motor 37 through a first coupling 36. The type of the first supporting member is not limited, and the lead screw 30 may be supported by the supporting plate 40. In this embodiment, the first support member includes: the first fixing seat 35 and the first supporting seat 34, and the first fixing seat 35 and the first supporting seat 34 are respectively connected with the supporting plate 40. The first coupling 36 is located between the first fixed seat 35 and the first motor 37. The lead screw nut 31 is located between the first fixed seat 35 and the first supporting seat 34, and the first fixed seat 35 and the first supporting seat 34 jointly support the lead screw 30.

Further, referring to fig. 3 and 4, the microscope head device 10 further includes: and the first connecting piece 33, the first connecting piece 33 is respectively connected with the second connecting piece 32, the second sliding piece 13 and the imaging assembly 11. Specifically, the first connector 33 includes: a first portion 39 and a second portion 38 coupled, the second portion 38 at least partially positioned between the second slide 13 and the imaging assembly 11, the first portion 39 positioned between the second link 32 and the second slide 13 and coupled to the second link 32 and the second slide 13, respectively, and the second portion 38 coupled to the imaging assembly 11. Referring to fig. 2, in the present embodiment, the first portion 39 is perpendicular to the second portion 38, i.e., the second portion 38 of the first connecting member 33 extends in the first direction to connect with the imaging assembly 11. In the present embodiment, the second portion 38 of the first link 33 is connected to a third link 50 (refer to fig. 6) of the imaging unit 11 described later.

The weight of the imaging assembly 11 is transferred through the second portion 38 of the first link 33 to the first portion 39 and then to the second slide 13, creating a compressive force on the second slide 13. The second slider 13 is subjected to compressive forces (indicated by F2 in fig. 3) rather than tensile forces, and the second slider 13 is able to resist compression, making the microscope head apparatus 10 robust and long-lived.

Therefore, the lead screw 30 is matched with the lead screw nut 31 to convert the circumferential motion into the linear motion, the lead screw nut 31 moves along the second direction relative to the lead screw 30 to drive the second connecting piece 32 to move along the second direction, and then drives the first connecting piece 33 to move along the second direction, the first connecting piece 33 drives the second sliding piece 13 to move along the second direction relative to the first sliding piece 12, the first connecting piece 33 simultaneously drives the third connecting piece 50 to move along the second direction, and finally the imaging assembly 11 moves along the second direction relative to the first sliding piece 12.

In the present invention, referring to fig. 3 and 4, the second connecting member 32 is engaged with the lead screw nut 31 and the first portion 39 of the first connecting member 33, respectively, and the second connecting member 32 is movable in the second direction relative to the lead screw 30. In this embodiment, the second connecting member 32 is attached to a side of the lead screw nut 31 facing away from the support plate 40. The second connecting member 32 is a sheet metal part and has rigidity, the second connecting member 32 includes a first portion 32a, a second portion 32b and a third portion 32c which are sequentially connected and arranged at an angle, wherein the third portion 32c of the second connecting member 32 is attached to the lead screw nut 31, the first portion 32a of the second connecting member 32 is attached to the first portion 39 of the first connecting member 33, and the second connecting member 32 can move relative to the lead screw 30 along the second direction. Therefore, the first connecting pieces 33 arranged at intervals in the third direction are light and convenient through the bent steel sheet piece structure, and the lead screw nut 31 drives the first connecting pieces 33 to move in the second direction, so that high speed and high precision are obtained. And meanwhile, the light weight and the rigidity are provided, the second sliding piece 13 and the first connecting piece 33 are prevented from deflecting in the process of moving along the second direction, and the transmission precision is obtained.

Referring to fig. 5 in conjunction with fig. 3 and 4, the side of the support plate 40 facing away from the imaging assembly 11 is provided with a first stiffener 14 extending in the second direction and a second stiffener 15 extending in the third direction, and in other embodiments, either the first stiffener 14 or the second stiffener 15 may be provided. In this embodiment, two first reinforcing members 14 are provided at intervals in the third direction, and the second reinforcing members 15 are laid on the two first reinforcing members 14. The first reinforcing member 14 and the second reinforcing member 15 surround the driving assembly in a frame-shaped structure, so that the strength of the supporting plate 40 is improved, the pressure applied to the second sliding member 13 by the weight of the imaging assembly 11 can be better borne, and the microscope head device 10 is solid as a whole.

Referring to fig. 6-8 in conjunction with fig. 5, the imaging assembly 11 of the present invention includes: a third link 50 extending in a second direction (indicated by the direction Y in fig. 6 and 7), the third link 50 being connected to the second slider 13 by means of the second portion 38 of the first link 33; and a mounting reference plate 51 extending in the first direction (shown by the X direction in fig. 6 and 8) and connected to the third connector 50. Referring to fig. 7, in the second direction, the third connector 50 is perpendicular to the mounting reference plate 51, and the third connector 50 is longer than the mounting reference plate 51. The mounting reference plate 51 is provided with a turntable positioning structure main plate 52 and an imaging structure fixing main plate 53 which extend along the second direction, and referring to fig. 5, the turntable positioning structure main plate 52 is used for mounting a turntable positioning structure 56, and the imaging structure fixing main plate 53 is used for mounting an imaging structure 57. In this embodiment, the turntable positioning structure main board 52 is located between the imaging structure fixing main board 53 and the third connecting member 50.

Wherein, the side of the mounting reference plate 51 opposite to the turntable positioning structure main plate 52 is provided with a third reinforcing member 55 and a fourth reinforcing member 54, and the third reinforcing member 55 and the fourth reinforcing member 54 are positioned on the opposite side of the mounting reference plate 51. In other embodiments, a third stiffener 55 or a fourth stiffener 54 may be provided. In this embodiment, there are two third reinforcing members 55 spaced apart from each other in the third direction; the fourth reinforcing members 54 are two and spaced apart in the third direction.

The third reinforcing member 55 of the present invention is coupled to at least one of the mounting reference plate 51 and the third connecting member 50. In this embodiment, the third reinforcing member 55 is connected to both the mounting reference plate 51 and the third connecting member 50, the third reinforcing member 55 has a first portion and a second portion connected perpendicularly, the first portion of the third reinforcing member 55 is attached to the mounting reference plate 51, and the second portion of the third reinforcing member 55 is attached to the third connecting member 50. Equivalently, the third reinforcing member 55 supports the mounting reference plate 51.

The fourth reinforcing member 54 is connected to at least one of the mounting reference plate 51, the turntable positioning structure main plate 52, the imaging structure fixing main plate 53, and the third connecting member 50. In this embodiment, the fourth reinforcing member 54 is simultaneously connected to the installation reference board 51, the turntable positioning structure main board 52, the imaging structure fixing main board 53 and the third connecting member 50, and the two fourth reinforcing members 54 simultaneously clamp the installation reference board 51, the turntable positioning structure main board 52, the imaging structure fixing main board 53 and the third connecting member 50. This arrangement makes the imaging assembly 11 as a whole robust.

With reference to fig. 1, the present invention also provides a microscope 1 comprising: in the microscope head device 10 according to any of the embodiments described above, the microscope head device 10 is mounted on the base 1a of the microscope 1. The imaging assembly 11 of the microscope 1 of the present invention has a plurality of objective lenses 11 a. In other embodiments, the imaging assembly 11 has one objective lens 11 a.

Referring to fig. 9 to 12, the present invention provides an objective lens adjusting device 60, the objective lens adjusting device 60 being mounted on an objective lens 11a, the objective lens adjusting device 60 including: a first sleeve 61, a second sleeve 62 and a third sleeve 63. The first sleeve 61 is sleeved on one axial end of the objective lens 11a, and the objective lens 11a can move synchronously with the first sleeve 61; the first sleeve 61 has a mounting member for fixed connection with one axial end of the objective lens 11a, the mounting member being, for example, an internal thread of the first sleeve 61, one axial end of the objective lens 11a having an external thread, the first sleeve 61 and the objective lens 11a being screwed together. The second sleeve 62 is disposed circumferentially (indicated by the direction L in fig. 9 and 10) around the objective lens 11a, the outer surface of the objective lens 11a is spaced from the inner surface of the second sleeve 62 by a gap (indicated by H2 in fig. 12) in the radial direction (indicated by the direction N in fig. 12), and the lower end surface 61a of the first sleeve 61 is placed on the upper end surface 62b of the second sleeve 62 in the axial direction (indicated by the direction Y in fig. 11 and 12); the third sleeve 63 is disposed around the first sleeve 61 and the second sleeve 62, and an inner surface of the third sleeve 63 is radially spaced from an outer surface of the first sleeve 61 (shown in fig. 12 as H1) and is threadedly coupled to an outer surface of the second sleeve 62. An adjustment member is provided on the third sleeve 63 for driving the first sleeve 61 to translate radially on the upper end face of the second sleeve 62.

Since the outer surface of the second sleeve 62 is in threaded connection with the inner surface of the third sleeve 63, the second sleeve 62 can move in the axial direction by rotating the second sleeve 62, the first sleeve 61 is placed on the second sleeve 62, and then the second sleeve 62 can drive the first sleeve 61 to move in the axial direction, so that the objective lens 11a can move in the axial direction until the objective lens 11a observes a sample to obtain a clear picture. Referring to fig. 13, in the case of a multi-objective lens, the positions of objective lenses 11a of different magnifications in the axial direction can be adjusted. Then, when the objective lenses 11a with different magnifications are switched to observe the same sample, the position of the objective lenses 11a with different magnifications in the axial direction is adjusted until the objective lenses 11a with different magnifications observe the sample, so that a clear picture can be obtained, and the process is called parfocalization.

In the case of a multi-objective lens, the position of the central axis (indicated by O in fig. 12) of the objective lens 11a of different magnification in the radial direction can be adjusted. A gap in the radial direction between the outer surface of the objective lens 11a and the inner surface of the second sleeve 62 (shown by H2 in fig. 12) and a gap in the radial direction between the inner surface of the third sleeve 63 and the outer surface of the first sleeve 61 (shown by H1 in fig. 12) represent adjustment gaps, and in this embodiment, H1 is equal to H2. The adjusting gap is, for example, 1mm to 2mm, and the gap is not limited and can be set accordingly according to actual needs. Then, when the objective lenses 11a with different magnifications are switched to observe the same sample, the positions of the central axes of the objective lenses 11a with different magnifications in the radial direction are adjusted by the adjusting member until the objective lenses 11a with different magnifications can observe the same position of the sample, and the first sleeve 61 is fixed, which is called as the alignment.

Thus, the objective lens adjusting device 60 of the present invention can achieve both the alignment of focus and the alignment of center.

Referring to fig. 10 to 12, the objective lens adjusting device 60 of the present invention further includes: and an elastic member 66, wherein the elastic member 66 is arranged on the upper end surface 61b of the first sleeve 61. The elastic members 66 respectively abut against the upper end surface 61b of the first sleeve 61 and the mounting reference plate 51 (refer to fig. 14), and the elastic members 66 can play a role of buffering during the axial movement of the objective lens 11 a. The specific type of the elastic member 66 is not limited, and may have an elastic force. Referring to fig. 10 and 11, in the present embodiment, the elastic member 66 is a three wave peak washer.

Referring to fig. 9 and 11, in the present invention, the lower end surface 62c of the second sleeve 62 is provided with at least one notch 62a in the circumferential direction. In this embodiment, the lower end surface 62c of the second sleeve 62 is provided with four notches 62a along the circumferential direction, a tool can be inserted into the notches 62a, and the second sleeve 62 is driven to rotate along the circumferential direction by operating the tool, so that the above-mentioned coke alignment process is realized.

Specifically, referring to fig. 9, 11 and 12, in the present embodiment, the adjusting member includes a screw mounting hole 64 provided on the third sleeve 63, and a set screw 65 provided in the screw mounting hole 64, the screw mounting hole 64 extending in the radial direction. The set screw 65 abuts against the outer surface of the first sleeve 61, and by screwing the set screw 65, the first sleeve 61 can be driven to translate along the radial direction on the upper end face of the second sleeve 62, so that the centering process is realized. In other embodiments, the adjustment element is of another type, able to drive the first sleeve 61 in translation along the radial direction on the upper end face of the second sleeve 62.

The number of the screw mounting holes 64 is at least two, the screw mounting holes 64 are arranged along the circumferential direction, the set screw 65 is mounted in each screw mounting hole 64, and the set screws 65 not only can drive the first sleeve 61 to move along the radial direction, but also can fix the first sleeve 61.

Referring to fig. 2, 5 and 13 and 14, the present invention also provides an imaging assembly 11 comprising: mounting the reference plate 51; an objective lens 11a, one axial end of the objective lens 11a and the installation reference plate 51 are arranged oppositely along the axial direction; in the objective lens adjusting device 60 according to any of the embodiments, one axial end of the third sleeve 63 is mounted on the mounting reference plate 51, and the first sleeve 61 is fitted over one axial end of the objective lens 11 a. In the present embodiment, the one axial end of the third sleeve 63 and the mounting reference plate 51 are connected by a bolt, but not limited to, and the third sleeve 63 may be mounted on the mounting reference plate 51.

Referring to fig. 12 and 14, an elastic member 66 is provided between the upper end surface of the first sleeve 61 and the mounting reference plate 51 in the axial direction, and the elastic member 66 abuts against the upper end surface of the first sleeve 61 and the mounting reference plate 51, respectively. Referring to fig. 13, the objective lens adjusting device 60 of the present invention is at least two, and preferably, the objective lens adjusting device 60 is at least three. And is provided to the mounting reference plate 51 in the circumferential direction (indicated by L in fig. 13). The imaging assembly 11 is provided with the objective lens adjusting device 60, so that the focusing alignment and the centering can be realized.

Referring to fig. 1 in conjunction with fig. 13 and 14, the present invention also provides a microscope 1 comprising: an imaging assembly 11 as in any of the embodiments described above. The objective lens adjusting device 60 in the microscope 1 of the present invention can thus achieve both parfocal and true center.

Referring to fig. 15 and 16, the present invention provides an objective turret 6 including the above-mentioned mounting reference plate 51, a rotation shaft 71, and a turntable main plate 70. The rotating shaft 71 is perpendicular to the mounting reference plate 51 and is rotatably connected with the mounting reference plate 51, and at least two fixing pieces 72 are arranged on the rotating shaft 71 at intervals along the axial direction (shown in the Y direction in fig. 15 and 16) of the rotating shaft 71, and the fixing pieces 72 are rotatably connected with the rotating shaft 71. The number of fasteners 72 is not limited and two fasteners 72 are shown in fig. 16, in other embodiments, other numbers of fasteners 72 may be provided as desired. The fixed member 72 is connected to the rotating shaft 71 through a bearing, so that the fixed member 72 is rotatably connected to the rotating shaft 71.

In this embodiment, the turntable main board 70 is axially (shown in the Y direction in fig. 15 and 16) spaced from the mounting reference board 51 and fixedly connected to the rotating shaft 71, the rotating shaft 71 can drive the turntable main board 70 to move along the circumferential direction, the turntable main board 70 is used to mount at least two objective lenses 11a, and in this embodiment, one side of the turntable main board 70, which is opposite to the mounting reference board 51, is used to mount at least two objective lenses 11 a. Six objective lenses 11a are provided on the turntable main plate 70 shown in fig. 15, and in other embodiments, other numbers of objective lenses 11a with different magnifications may be provided, such as seven, eight, etc.

Wherein, referring to fig. 19, in the axial direction (indicated by Y direction in fig. 19), the rotation shaft 71 has a first portion 71a located between the mounting reference plate 51 and the turntable main plate 70, and a second portion 71b located above the mounting reference plate 51, the first portion 71a being shorter than the second portion 71 b. That is, the first portion 71a of the shaft 71 is a short arm of the shaft 71, and the second portion 71b of the shaft 71 is a long arm of the shaft 71. The first part 71a of the rotating shaft 71 is fixedly connected with the turntable main board 70, and the second part 71b of the rotating shaft 71 is connected with the motor 74.

Since at least two objective lenses 11a are arranged on the turntable main plate 70, the objective lenses 11a have different magnifications, and the objective lenses 11a with different magnifications are switched by the circumferential movement of the turntable main plate 70. At least two fixing pieces 72 which are arranged at intervals along the axial direction are arranged on the rotating shaft 71, and the fixing pieces 72 play a role in fixing the rotating shaft 71, so that the rotating shaft 71 is fixed at multiple points; in addition, the first part 71a of the rotating shaft 71 is shorter than the second part 71b, which is equivalent to the fact that the short arm of the rotating shaft 71 is connected with the turntable main plate 70, the second part 71b of the rotating shaft 71 can be made as long as possible to form a lever effect, the short arm drives the turntable main plate 70 to move in the circumferential direction, and the rotating shaft 71 can be effectively prevented from swinging in the circumferential direction of the turntable main plate 70, so that the movement of the turntable main plate 70 in the circumferential direction is stable, the positioning accuracy of the objective lens is improved, and the measurement accuracy of the microscope is further improved.

Preferably, the ratio of the dimensions of the first portion 71a to the second portion 71b of the shaft 71 in the axial direction is between 1/7 and 1/6, including 1/8 and 1/6, more preferably 1/7.

Referring to fig. 16 to 19, the objective turret 6 of the present invention further includes: a turntable positioning structure main board 52 extending along the axial direction and fixedly connected with the mounting reference board 51; the turntable positioning structure main board 52 is provided with a fixing seat assembly 73, the rotating shaft 71 is supported on the fixing seat assembly 73, one axial end of the rotating shaft 71 is connected with the turntable main board 70, and the other axial end is connected with the motor 74 through a coupler 75. That is, the driving component for driving the main plate 70 of the turntable to move along the circumferential direction of the present invention is located on the main plate 70 of the turntable along the axial direction, and the rotating shaft 71 can be made as long as possible. In this embodiment, one end of the fixing seat assembly 73 is connected to one of the fixing members 72, the other end is connected to the motor 74, and the coupling 75 is located in the fixing seat assembly 73. The motor 74 works to drive the rotating shaft 71 to rotate, and then drives the turntable main board 70 to move along the circumferential direction, so that the objective lens 11a with different magnifications is switched. The specific type of the fixing seat assembly 73 is not limited, and the rotating shaft 71 can be supported.

Referring to fig. 16, 17 and 19, in the present embodiment, there are two fixing members 72, one fixing member 72 is attached to the fixing base assembly 73, and the other fixing member 72 is attached to the mounting reference plate 51. By the arrangement, the installation reference plate 51, the two fixing pieces 72, the fixing seat assembly 74 and the turntable positioning structure main plate 52 are rigidly connected, the rotating shaft 71 is better supported, the possibility of deflection of the rotating shaft 71 can be further reduced, and the short arm of the rotating shaft 71 drives the turntable main plate 70, so that the stability of the turntable main plate 70 in circumferential motion is improved, the positioning precision of an objective lens is improved, and the measurement precision of a microscope is improved. The stator 72 is not limited to being connected to the stator assembly 73 and the mounting reference plate 51, and may function to fix the shaft 71.

With continued reference to fig. 15 and 16, the turntable main plate 70 is provided with a first positioning member 76, the mounting reference plate 51 is provided with a second positioning member 77, when the turntable main plate 70 rotates to an objective lens of a certain magnification along the circumferential direction, the first positioning member 76 and the second positioning member 77 cooperate with each other to limit the movement of the turntable main plate 70 in the circumferential direction, and when the objective lens of a certain magnification is switched to an objective lens of another magnification, the first positioning member 76 and the second positioning member 77 are separated. For example, when the motor 74 operates, the turntable main board 70 rotates in the circumferential direction, and the microscope is switched from the objective lens with low magnification to the objective lens with high magnification, the first positioning member 76 and the second positioning member 77 cooperate with each other to position the objective lens, the motor 74 stops operating to limit the movement of the turntable main board 70 in the circumferential direction, and the microscope can stably observe a sample under the objective lens with high magnification; when a low-power objective lens is needed, the motor 74 continues to operate, the first positioning member 76 and the second positioning member 77 are separated, the turntable main board 70 can rotate along the circumferential direction, and the microscope is switched from a high-power objective lens to a low-power objective lens.

Specifically, in the present invention, one of the first positioning member 76 and the second positioning member 77 is a groove, and the other is a bearing. In this embodiment, referring to fig. 16, 18 and 19, the first positioning element 76 is disposed on a portion of the turntable main plate 70 facing the mounting reference plate 51, the first positioning element 76 is a groove, the second positioning element 77 is disposed on a portion of the mounting reference plate 51 facing the turntable main plate 70, the second positioning element 77 is a bearing, the mounting reference plate 51 is provided with a fixing rod 79 extending along an axial direction, and the bearing is sleeved on the fixing rod 79. Wherein, the part of installation benchmark board 51 towards carousel mainboard 70 is equipped with fixed panel beating 78, and dead lever 79 installs on fixed panel beating 78, and the bearing can rotate around dead lever 79.

When the turntable main board 70 rotates to the objective lens with a certain magnification along the circumferential direction, the bearing is located in the groove to play a role in positioning the objective lens, the motor stops working to limit the circumferential movement of the turntable main board 70, when the objective lens with a certain magnification is switched to the objective lens with another magnification, the motor 74 works, the bearing and the groove rotate relatively, so that the first positioning piece 76 and the second positioning piece 77 are separated, and the turntable main board 70 can continue to move along the circumferential direction.

Referring to fig. 2, 5 and 13 to 15, the present invention also provides an imaging assembly 11, comprising: the objective lens turret 6 according to any of the above embodiments, and at least two objective lenses 11a, the objective lenses 11a are mounted on the main turntable plate 70, and in this embodiment, the objective lenses 11a are mounted on a side of the main turntable plate 70 opposite to the mounting reference plate 51.

Referring to fig. 1 in conjunction with fig. 13 to 15, the present invention also provides a microscope 1 comprising: the imaging assembly 11 described in the above embodiments.

In summary, the above-mentioned embodiments are provided only for illustrating the principles and effects of the present invention, and not for limiting the present invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. An objective lens adjusting device mounted on an objective lens, comprising:

a first sleeve having a mounting member for fixedly coupling with an axial end of the objective lens;

the second sleeve is used for surrounding the objective lens along the circumferential direction, a gap exists between the outer surface of the objective lens and the inner surface of the second sleeve along the radial direction, and the lower end face of the first sleeve is placed on the upper end face of the second sleeve along the axial direction;

the inner surface of the third sleeve and the outer surface of the first sleeve have a gap along the radial direction and are in threaded connection with the outer surface of the second sleeve;

and the adjusting piece is arranged on the third sleeve and used for driving the first sleeve to translate on the upper end face of the second sleeve along the radial direction.

2. The objective lens adjusting apparatus according to claim 1, further comprising: the elastic piece is arranged on the upper end face of the first sleeve.

3. An objective lens adjustment device as set forth in claim 1, wherein the lower end surface of the second sleeve is provided with at least one notch in the circumferential direction.

4. An objective lens adjustment device as set forth in claim 1, wherein the adjustment member includes a screw mounting hole provided on the third sleeve, and a set screw provided in the screw mounting hole, the screw mounting hole extending in the radial direction.

5. The objective lens adjustment device according to claim 4, wherein the screw mounting holes are at least two, provided along the circumferential direction.

6. An objective lens adjustment device as set forth in claim 2, wherein the elastic member is a tri-wave peak washer.

7. An imaging assembly, comprising:

installing a reference plate;

the axial end of the objective lens is opposite to the installation reference plate along the axial direction;

the objective lens adjusting apparatus according to any one of claims 1 to 6, wherein an axial end of the third sleeve is mounted on the mounting reference plate, and the first sleeve is fitted over an axial end of the objective lens.

8. An imaging assembly according to claim 7, wherein an elastic member is provided between the upper end surface of the first sleeve and the mounting reference plate in the axial direction, the elastic member abutting against the upper end surface of the first sleeve and the mounting reference plate, respectively.

9. An imaging assembly according to claim 7, wherein the number of the objective lens adjusting means is at least two, and is provided on the mounting reference plate along the circumferential direction.

10. A microscope, comprising: the imaging assembly of any of claims 7-9.

Images