Objective lens adjustment device, imaging assembly and microscope

Abstract

The present invention relates to an objective lens adjustment device, an imaging assembly, and a microscope, wherein the objective lens adjustment device is mounted on the objective lens and comprises: a first sleeve having a mounting member, the mounting member being fixedly connected to one axial end of the objective lens; a second sleeve being arranged circumferentially around the objective lens, with a radial gap between the outer surface of the objective lens and the inner surface of the second sleeve, and the lower end surface of the first sleeve being placed on the upper end surface of the second sleeve in the axial direction; a third sleeve being arranged around the first and second sleeves, with a radial gap between the inner surface of the third sleeve and the outer surface of the first sleeve, and being threadedly connected to the outer surface of the second sleeve; and an adjustment member being provided on the third sleeve, the adjustment member being used to drive the first sleeve to translate radially on the upper end surface of the second sleeve. The objective lens adjustment device of the present invention can achieve both concentricity and parfocality.

Description

Technical Field

[0001] The present invention relates to the technical field of microscopes, and in particular to an objective lens adjustment device, an imaging component and a microscope. Background Art

[0002] A microscope is an optical instrument composed of one or more lenses. It is widely used in healthcare, biological testing, metallographic examinations, and integrated circuit testing. A sample is typically placed on a stage, and observation is accomplished by moving the stage, for example, in the X and Y directions.

[0003] For example, Chinese patent document with publication number CN104423027A discloses a microscope including a recording unit, which has a magnifying imaging optical unit and an image module for recording multiple images of a sample at a first image frequency, and a digital evaluation unit, the recorded images are provided to the digital evaluation unit, and the digital evaluation unit performs predetermined image processing based on the recorded images, and as a result, generates multiple output images at a second image frequency, which is less than or equal to the first image frequency, and can be transferred to the output unit for representation. Summary of the Invention

[0004] In order to solve the above problems, the object of the present invention is to provide an objective lens adjustment device, wherein the objective lens adjustment device is mounted on the objective lens and comprises:

[0005] A first sleeve having a mounting member, wherein the mounting member is used to be fixedly connected to one axial end of the objective lens;

[0006] a second sleeve, configured to surround the objective lens in a circumferential direction, with a radial gap between an outer surface of the objective lens and an inner surface of the second sleeve, and an axial direction wherein a lower end surface of the first sleeve is placed on an upper end surface of the second sleeve;

[0007] a third sleeve, disposed around the first sleeve and the second sleeve, with a radial gap between an inner surface of the third sleeve and an outer surface of the first sleeve, and threadedly connected to the outer surface of the second sleeve;

[0008] An adjusting member is provided on the third sleeve, and is used for driving the first sleeve to translate along the radial direction on the upper end surface of the second sleeve.

[0009] Optionally, it further includes: an elastic member, which is arranged on the upper end surface of the first sleeve.

[0010] Optionally, the lower end surface of the second sleeve is provided with at least one notch along the circumferential direction.

[0011] 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 along the radial direction.

[0012] Optionally, there are at least two screw mounting holes, which are arranged along the circumference.

[0013] Optionally, the elastic member is a triple-peak washer.

[0014] The present invention also provides an imaging assembly, comprising: a mounting reference plate; an objective lens, wherein one axial end of the objective lens is axially arranged opposite to the mounting reference plate; and an objective lens adjustment device as described in any one of the above items, wherein one axial end of the third sleeve is mounted on the mounting reference plate, and the first sleeve is sleeved on one axial end of the objective lens.

[0015] Optionally, along the axial direction, an elastic member is provided between the upper end surface of the first sleeve and the mounting reference plate, and the elastic member abuts against the upper end surface of the first sleeve and the mounting reference plate respectively.

[0016] Optionally, there are at least two objective lens adjustment devices, which are arranged on the mounting reference plate along the circumferential direction.

[0017] The present invention also provides a microscope, comprising: any one of the imaging components described above.

[0018] As described above, the present invention provides an objective lens adjustment device, which is mounted on the objective lens and includes: a first sleeve having a mounting member, the mounting member being fixedly connected to one 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 and the objective lens being threadedly connected; a second sleeve being circumferentially arranged around the objective lens, a radial gap existing between the outer surface of the objective lens and the inner surface of the second sleeve, and an axial position in which the lower end surface of the first sleeve is placed on the upper end surface of the second sleeve; a third sleeve being arranged around the first sleeve and the second sleeve, a radial gap existing between the inner surface of the third sleeve and the outer surface of the first sleeve, and being threadedly connected to the outer surface of the second sleeve; an adjustment member being arranged on the third sleeve, the adjustment member being used to drive the first sleeve to translate radially on the upper end surface of the second sleeve. The objective lens adjustment device of the present invention can achieve both concentricity and parfocality.

[0019] In order to make the above contents of the present invention more clearly understood, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a side view of a microscope according to an embodiment of the present invention;

[0021] Figure 2 This is a side view of the microscope head device according to an embodiment of the present invention. Figure 1 ;

[0022] Figure 3 The microscope head device of the embodiment of the present invention is a three-dimensional Figure 1 ;

[0023] Figure 4 This is a side view of the microscope head device according to an embodiment of the present invention. Figure 2 ;

[0024] Figure 5 The microscope head device of the embodiment of the present invention is a three-dimensional Figure 2 ;

[0025] Figure 6 is a stereoscopic diagram of an imaging assembly in a microscope head device according to an embodiment of the present invention;

[0026] Figure 7 is a side view of an imaging assembly in a microscope head device according to an embodiment of the present invention;

[0027] Figure 8 is a top view of an imaging assembly in a microscope head device according to an embodiment of the present invention;

[0028] Figure 9 The objective lens adjustment device of the embodiment of the present invention is a three-dimensional Figure 1 ;

[0029] Figure 10 The objective lens adjustment device of the embodiment of the present invention is a three-dimensional Figure 2 ;

[0030] Figure 11 is a side view of an objective lens adjustment device according to an embodiment of the present invention;

[0031] Figure 12 is a cross-sectional view of an objective lens adjustment device according to an embodiment of the present invention;

[0032] Figure 13 The imaging component of the embodiment of the present invention is a three-dimensional Figure 2 ;

[0033] Figure 14 This is a side view of the imaging assembly of an embodiment of the present invention. Figure 2 ;

[0034] Figure 15 The three-dimensional objective lens turret of the embodiment of the present invention Figure 1 ;

[0035] Figure 16 The three-dimensional objective lens turret of the embodiment of the present invention Figure 2 ;

[0036] Figure 17This is a side view of the objective lens turret of the embodiment of the present invention. Figure 1 ;

[0037] Figure 18 is a top view of the objective lens turret according to an embodiment of the present invention;

[0038] Figure 19 This is a side view of the objective lens turret of the embodiment of the present invention. Figure 2 . DETAILED DESCRIPTION

[0039] The following is an explanation of the embodiments of the present invention by specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0040] refer to Figures 1 to 3 The present invention provides a microscope head device 10, which is installed on a microscope 1. In this embodiment, the microscope head device 10 includes: Figure 2 and Figure 3 The imaging assembly 11, the first sliding member 12 and the second sliding member 13 are sequentially arranged along the second direction ( Figure 3 The second direction and the first direction are perpendicular to each other, the first sliding member 12 and the second sliding member 13 cooperate with each other, the second sliding member 13 can slide relative to the first sliding member 12 along the second direction, and at least in the process of driving the imaging component 11 to move relative to the first sliding member 12 along the second direction, the first sliding member 12 and the second sliding member 13 are in contact with each other.

[0041] In addition, reference Figure 3 and Figure 4 The microscope head device 10 further includes a first connecting member 33 , which is at least partially located between the second sliding member 13 and the imaging assembly 11 , and the second sliding member 13 is connected to the imaging assembly 11 through the first connecting member 33 .

[0042] Since the first sliding member 12 is located between the imaging assembly 11 and the second sliding member 13, the weight of the imaging assembly 11 ( Figure 3The pressure (shown as F1 in FIG. 1 ) is transmitted to the second sliding member 13 through the first connecting member 33, generating pressure on the second sliding member 13 ( Figure 3 As shown in F2), and the imaging component 11 is located in front of the second sliding member 13, the imaging component 11 moves relative to the first sliding member 12 along the second direction, the first sliding member 12 and the second sliding member 13 are in contact with each other, then the second sliding member 13 is subjected to pressure ( Figure 3 The second sliding member 13 is able to resist compression, making the microscope head device 10 strong and having a long service life.

[0043] It should be noted that the type of sliding member of the present invention is not limited, and the manner in which the sliding members cooperate with each other may vary, as long as they can produce relative sliding. In this embodiment, the first sliding member 12 is a slide rail, and the second sliding member 13 is a slider. The second sliding member 13 is mounted on the first sliding member 12 to achieve mutual cooperation. In other embodiments, other types of sliding members may be used, such as guide rods and sliding sleeves.

[0044] In addition, the microscope head device 10 of the present invention further includes: a driving component, which is arranged along the second direction and connected to the second sliding member 13, and is used to drive the imaging component 11 to move relative to the first sliding member 12 along the second direction. Figure 3 and Figure 4 In this embodiment, the drive assembly is a screw assembly, but is not limited thereto. In other embodiments, the drive assembly is a linear motor. In this embodiment, the drive assembly includes: a screw 30 extending in the second direction; and a screw nut 31 sleeved on the screw 30. The screw nut 31 is connected to the second sliding member 13 via a second connecting member 32. Thus, the screw 30 and the screw nut 31 cooperate to convert circumferential motion into linear motion. The screw nut 31 moves relative to the screw 30 in the second direction, driving the second connecting member 32 to move in the second direction, which in turn drives the second sliding member 13 to move in the second direction. The second sliding member 13 drives the imaging assembly 11 to move in the second direction relative to the first sliding member 12.

[0045] Continue to refer Figure 3 and Figure 4 The microscope head device 10 of the present invention further includes: a support plate 40, along the first direction ( Figure 3 The support plate 40 is located between the imaging assembly 11 and the first sliding member 12; the first sliding member 12 is two and along the third direction ( Figure 3 The first, second and third directions are perpendicular to each other.

[0046] In this embodiment, the screw rod 30 is supported on the support plate 40 by a first support member, the first support member is connected to the support plate 40, and the screw rod 30 is connected to the output shaft of the first motor 37 through a first coupling 36. There is no limitation on the type of the first support member, as long as it can support the screw rod 30 on the support plate 40. In this embodiment, the first support member includes: a first fixed seat 35 and a first support seat 34, and the first fixed seat 35 and the first support seat 34 are respectively connected to the support plate 40. The first coupling 36 is located between the first fixed seat 35 and the first motor 37. The screw nut 31 is located between the first fixed seat 35 and the first support seat 34, and the first fixed seat 35 and the first support seat 34 jointly support the screw rod 30.

[0047] In addition, reference Figure 3 and Figure 4 The microscope head device 10 further includes: a first connecting member 33, which is respectively connected to the second connecting member 32, the second sliding member 13 and the imaging assembly 11. Specifically, the first connecting member 33 includes: a first portion 39 and a second portion 38, which are connected to each other. The second portion 38 is at least partially located between the second sliding member 13 and the imaging assembly 11. The first portion 39 is located between the second connecting member 32 and the second sliding member 13 and is respectively connected to the second connecting member 32 and the second sliding member 13. The second portion 38 is connected to the imaging assembly 11. Figure 2 As shown, in this embodiment, the first portion 39 is perpendicular to the second portion 38, that is, the second portion 38 of the first connecting member 33 extends along the first direction to connect with the imaging assembly 11. In this embodiment, the second portion 38 of the first connecting member 33 is connected to the third connecting member 50 of the imaging assembly 11 described later (refer to FIG. Figure 6 )connect.

[0048] The weight of the imaging assembly 11 is transferred to the first portion 39 through the second portion 38 of the first connecting member 33, and then to the second sliding member 13, generating pressure on the second sliding member 13. Then the second sliding member 13 is subjected to pressure ( Figure 3 The second sliding member 13 is able to resist compression, making the microscope head device 10 strong and having a long service life.

[0049] Thus, the screw rod 30 and the screw nut 31 cooperate to convert the circumferential motion into linear motion. The screw nut 31 moves in the second direction relative to the screw rod 30, driving the second connecting member 32 to move in the second direction, and then driving the first connecting member 33 to move in the second direction. The first connecting member 33 drives the second sliding member 13 to move in the second direction relative to the first sliding member 12. The first connecting member 33 also drives the third connecting member 50 to move in the second direction. Finally, the imaging component 11 moves in the second direction relative to the first sliding member 12.

[0050] In the present invention, reference Figure 3 and Figure 4 The second connecting member 32 is respectively attached to the screw nut 31 and the first portion 39 of the first connecting member 33, and the second connecting member 32 can move relative to the screw 30 along the second direction. In this embodiment, the second connecting member 32 is attached to the side of the screw nut 31 facing away from the support plate 40. The second connecting member 32 is a sheet metal member with rigidity. The second connecting member 32 includes a first portion 32a, a second portion 32b and a third portion 32c that are connected in sequence and arranged at an angle, wherein the third portion 32c of the second connecting member 32 is attached to the screw nut 31, and the first portion 32a of the second connecting member 32 is attached to the first portion 39 of the first connecting member 33. The second connecting member 32 can move relative to the screw 30 along the second direction. Therefore, the first connecting members 33 arranged at intervals along the third direction are configured by bending steel sheets to ensure lightness, and the screw nut 31 drives the first connecting member 33 to move along the second direction, achieving high speed and high precision. While being lightweight, it provides rigidity to prevent the second sliding member 13 and the first connecting member 33 from deflecting during movement along the second direction, thereby achieving transmission accuracy.

[0051] refer to Figure 5 Combined with Figure 3 and Figure 4 As shown, the support plate 40 of the present invention is provided with a first reinforcing member 14 extending along the second direction and a second reinforcing member 15 extending along the third direction on the side facing away from the imaging assembly 11. In other embodiments, either the first reinforcing member 14 or the second reinforcing member 15 may be provided. In this embodiment, two first reinforcing members 14 are provided, spaced apart along the third direction, and the second reinforcing member 15 is mounted on the two first reinforcing members 14. The first and second reinforcing members 14, 15 form a frame-like structure surrounding the drive assembly, enhancing the strength of the support plate 40 and better resistant to the pressure exerted on the second sliding member 13 by the weight of the imaging assembly 11, ensuring the overall rigidity of the microscope head device 10.

[0052] refer to Figures 6 to 8 Combined with Figure 5 As shown, the imaging assembly 11 of the present invention includes: a third connecting member 50, along the second direction ( Figure 6 and Figure 7 The third connecting member 50 is connected to the second sliding member 13 through the second portion 38 of the first connecting member 33; and the reference plate 51 is installed along the first direction ( Figure 6 and Figure 8 The X direction is shown in FIG. 5 ) and is connected to the third connecting member 50. Figure 7 , along the second direction, the third connecting member 50 is perpendicular to the mounting reference plate 51, and the third connecting member 50 is longer than the mounting reference plate 51. The mounting reference plate 51 is provided with a turntable positioning structure main board 52 and an imaging structure fixing main board 53 extending along the second direction, respectively. Figure 5 The turntable positioning structure mainboard 52 is used to install the turntable positioning structure 56, and the imaging structure fixing mainboard 53 is used to install the imaging structure 57. In this embodiment, the turntable positioning structure mainboard 52 is located between the imaging structure fixing mainboard 53 and the third connecting member 50.

[0053] A third reinforcement member 55 and a fourth reinforcement member 54 are provided on the side of the mounting base plate 51 facing away from the turntable positioning structure main plate 52. The third reinforcement member 55 and the fourth reinforcement member 54 are located on opposite sides of the mounting base plate 51. In other embodiments, either the third reinforcement member 55 or the fourth reinforcement member 54 may be provided. In this embodiment, two third reinforcement members 55 are provided, spaced apart along the third direction; and two fourth reinforcement members 54 are provided, spaced apart along the third direction.

[0054] The third reinforcement member 55 of the present invention is connected to at least one of the mounting base plate 51 and the third connecting member 50. In this embodiment, the third reinforcement member 55 is connected to both the mounting base plate 51 and the third connecting member 50. The third reinforcement member 55 has a first portion and a second portion that are perpendicularly connected. The first portion of the third reinforcement member 55 is attached to the mounting base plate 51, and the second portion of the third reinforcement member 55 is attached to the third connecting member 50. In other words, the third reinforcement member 55 supports the mounting base plate 51.

[0055] The fourth reinforcement member 54 is connected to at least one of the mounting base plate 51, the turntable positioning structure main plate 52, the imaging structure fixed main plate 53, and the third connecting member 50. In this embodiment, the fourth reinforcement member 54 is simultaneously connected to the mounting base plate 51, the turntable positioning structure main plate 52, the imaging structure fixed main plate 53, and the third connecting member 50. The two fourth reinforcement members 54 simultaneously clamp the mounting base plate 51, the turntable positioning structure main plate 52, the imaging structure fixed main plate 53, and the third connecting member 50. This arrangement ensures the overall rigidity of the imaging assembly 11.

[0056] refer to Figure 1 The present invention further provides a microscope 1 comprising: a microscope head device 10 as described in any of the above embodiments, wherein the microscope head device 10 is mounted on a base 1a of the microscope 1. The imaging assembly 11 of the microscope 1 of the present invention comprises a plurality of objective lenses 11a. In other embodiments, the imaging assembly 11 comprises a single objective lens 11a.

[0057] refer to Figures 9 to 12The present invention provides an objective lens adjustment device 60, which is installed on the objective lens 11a. The objective lens adjustment device 60 includes: a first sleeve 61, a second sleeve 62 and a third sleeve 63. Among them, 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, which is used to be fixedly connected to the axial end of the objective lens 11a. The mounting member is, for example, an internal thread of the first sleeve 61, and the axial end of the objective lens 11a has an external thread. The first sleeve 61 and the objective lens 11a are threadedly connected. The second sleeve 62 is arranged along the circumferential direction ( Figure 9 and Figure 10 The outer surface of the objective lens 11a and the inner surface of the second sleeve 62 are radially ( Figure 12 There is a gap (shown in the N direction) Figure 12 As shown in H2), along the axial direction ( Figure 11 and Figure 12 The lower end surface 61a of the first sleeve 61 is placed on the upper end surface 62b of the second sleeve 62; the third sleeve 63 is arranged around the first sleeve 61 and the second sleeve 62, and there is a gap between the inner surface of the third sleeve 63 and the outer surface of the first sleeve 61 along the radial direction ( Figure 12 H1 in the figure), and is threadedly connected to the outer surface of the second sleeve 62. An adjusting member is provided on the third sleeve 63, and the adjusting member is used to drive the first sleeve 61 to translate radially on the upper end surface of the second sleeve 62.

[0058] Since the outer surface of the second sleeve 62 is threadedly connected to the inner surface of the third sleeve 63, the second sleeve 62 can be moved in the axial direction by rotating the second sleeve 62, and 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 the sample and obtains a clear image. Figure 13 When multiple objective lenses are used, the axial positions of the objective lenses 11a of different magnifications can be adjusted. Therefore, when switching between objective lenses 11a of different magnifications to observe the same sample, the axial positions of the objective lenses 11a of different magnifications are adjusted until a clear image is obtained when observing the sample using the objective lenses 11a of different magnifications. This process is called parfocality.

[0059] In the case of multiple objective lenses, the central axis of the objective lenses 11a with different magnifications ( Figure 12 The radial position of the objective lens 11a and the inner surface of the second sleeve 62 is adjustable. Figure 12 H2 in the figure) and the radial clearance between the inner surface of the third sleeve 63 and the outer surface of the first sleeve 61 ( Figure 12H1 in the figure represents the adjustment gap. In this embodiment, H1 is equal to H2. The adjustment gap is, for example, 1 mm to 2 mm. This gap is not limited and can be set accordingly according to actual needs. When switching between objective lenses 11a of different magnifications to observe the same sample, the radial position of the central axis of the objective lenses 11a of different magnifications is adjusted using the adjustment member until the objective lenses 11a of different magnifications can observe the same position on the sample. The first sleeve 61 is then fixed. This process is called concentricity.

[0060] Therefore, the objective lens adjustment device 60 of the present invention can achieve both parfocality and concentricity.

[0061] refer to Figures 10 to 12 The objective lens adjustment device 60 of the present invention further comprises an elastic member 66, which is provided on the upper end surface 61b of the first sleeve 61. The elastic member 66 is respectively connected to the upper end surface 61b of the first sleeve 61 and the mounting reference plate 51 (reference Figure 14 ) offset, the elastic member 66 can play a buffering role during the axial movement of the objective lens 11a. The specific type of the elastic member 66 is not limited, as long as it has elastic force. Figure 10 and Figure 11 In this embodiment, the elastic member 66 is a three-peak washer.

[0062] refer to Figure 9 and Figure 11 In the present invention, the lower end surface 62c of the second sleeve 62 is provided with at least one notch 62a along the circumference. In this embodiment, the lower end surface 62c of the second sleeve 62 is provided with four notches 62a along the circumference. A tool can be inserted into each of the notches 62a. By operating the tool, the second sleeve 62 is driven to rotate circumferentially, achieving the aforementioned parfocalization process.

[0063] Specifically, refer to Figure 9 、 Figure 11 and Figure 12 In this embodiment, the adjustment member includes a screw mounting hole 64 provided on the third sleeve 63 and a set screw 65 disposed within the screw mounting hole 64. The screw mounting hole 64 extends radially. The set screw 65 abuts against the outer surface of the first sleeve 61. Tightening the set screw 65 drives the first sleeve 61 to translate radially relative to the upper end surface of the second sleeve 62, achieving centering. In other embodiments, the adjustment member may be of another type, simply capable of driving the first sleeve 61 to translate radially relative to the upper end surface of the second sleeve 62.

[0064] There are at least two screw mounting holes 64 of the present invention, which are arranged along the circumferential direction. A set screw 65 is installed in each screw mounting hole 64 . The set screw 65 can not only drive the first sleeve 61 to move radially, but also fix the first sleeve 61 .

[0065] refer to Figure 2 、 Figure 5 and Figure 13 and Figure 14 The present invention further provides an imaging assembly 11, comprising: a mounting reference plate 51; an objective lens 11a, one axial end of the objective lens 11a being axially opposed to the mounting reference plate 51; and an objective lens adjustment device 60 as described in any of the above embodiments, wherein one axial end of a third sleeve 63 is mounted on the mounting reference plate 51, and the first sleeve 61 is sleeved over one axial end of the objective lens 11a. In this embodiment, one axial end of the third sleeve 63 is connected to the mounting reference plate 51 by a bolt, but this connection is not limited to bolts. Any connection is sufficient to mount the third sleeve 63 on the mounting reference plate 51.

[0066] refer to Figure 12 and Figure 14 In the axial direction, an elastic member 66 is provided between the upper end surface of the first sleeve 61 and the mounting reference plate 51. The elastic member 66 abuts against the upper end surface of the first sleeve 61 and the mounting reference plate 51 respectively. Figure 13 The present invention has at least two objective lens adjustment devices 60, preferably at least three objective lens adjustment devices 60. Figure 13 L in the middle) is provided on the mounting base plate 51. The imaging assembly 11 is provided with the objective lens adjustment device 60, which can achieve both parfocality and concentricity.

[0067] refer to Figure 1 Combined with Figure 13 and Figure 14 As shown, the present invention further provides a microscope 1, comprising: the imaging assembly 11 described in any of the above embodiments. Thus, the objective lens adjustment device 60 in the microscope 1 of the present invention can achieve both parfocality and concentricity.

[0068] refer to Figure 15 and Figure 16 The present invention provides an objective lens turret 6, comprising the above-mentioned mounting base plate 51, a rotating shaft 71 and a turntable main plate 70. The rotating shaft 71 is perpendicular to the mounting base plate 51 and is rotatably connected to the mounting base plate 51. Figure 15 and Figure 16 The rotating shaft 71 is provided with at least two spaced apart fixing members 72, and the fixing members 72 are rotatably connected to the rotating shaft 71. The number of fixing members 72 is not limited. Figure 16 Two fixing members 72 are shown in the figure. In other embodiments, other numbers of fixing members 72 can be provided as needed. The fixing members 72 are connected to the rotating shaft 71 via a bearing, so that the fixing members 72 and the rotating shaft 71 are rotatably connected.

[0069] In this embodiment, the turntable main board 70 is arranged along the axial direction ( Figure 15 and Figure 16The turntable mainboard 70 is spaced apart from the mounting reference plate 51 and is fixedly connected to the rotating shaft 71. The rotating shaft 71 can drive the turntable mainboard 70 to move circumferentially. The turntable mainboard 70 is used to install at least two objective lenses 11a. In this embodiment, the side of the turntable mainboard 70 facing away from the mounting reference plate 51 is used to install at least two objective lenses 11a. Figure 15 As shown in FIG. 1 , six objective lenses 11 a are provided on the turntable main board 70 . In other embodiments, other numbers of objective lenses 11 a with different magnifications may be provided, such as seven or eight.

[0070] Among them, reference Figure 19 , along the axial direction ( Figure 19 (as shown in the Y direction in the middle), the rotating shaft 71 has a first portion 71a located between the mounting base plate 51 and the turntable main plate 70, and a second portion 71b located above the mounting base plate 51. The first portion 71a is shorter than the second portion 71b. In other words, the first portion 71a of the rotating shaft 71 is the short arm of the rotating shaft 71, while the second portion 71b of the rotating shaft 71 is the long arm of the rotating shaft 71. The first portion 71a of the rotating shaft 71 is fixedly connected to the turntable main plate 70, while the second portion 71b of the rotating shaft 71 is connected to the motor 74.

[0071] Since at least two objective lenses 11a are provided on the turntable main board 70, and these objective lenses 11a have different magnifications, the objective lenses 11a of different magnifications are switched by the circumferential movement of the turntable main board 70. The rotating shaft 71 of the present invention is provided with at least two fixing members 72 spaced apart along the axial direction, and the fixing members 72 play the role of fixing the rotating shaft 71, thereby achieving multi-point fixing of the rotating shaft 71; and the first part 71a of the rotating shaft 71 of the present invention is shorter than the second part 71b, which is equivalent to the short arm of the rotating shaft 71 connected to the turntable main board 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 board 70 to move in the circumferential direction, which can effectively prevent the rotating shaft 71 from swinging during the circumferential movement of the turntable main board 70, thereby stabilizing the circumferential movement of the turntable main board 70, improving the positioning accuracy of the objective lens, and then improving the measurement accuracy of the microscope.

[0072] Preferably, along the axial direction, the size ratio of the first portion 71 a to the second portion 71 b of the rotating shaft 71 is between 1 / 7 and 1 / 6, including 1 / 8 to 1 / 6, and more preferably 1 / 7.

[0073] refer to Figures 16 to 19The objective lens turret 6 of the present invention further includes: a turntable positioning structure mainboard 52 extending axially and fixedly connected to the mounting base plate 51; a fixed seat assembly 73 disposed on the turntable positioning structure mainboard 52, and a rotating shaft 71 supported by the fixed seat assembly 73. One axial end of the rotating shaft 71 is connected to the turntable mainboard 70, and the other axial end is connected to the motor 74 via a coupling 75. Specifically, the drive assembly that drives the turntable mainboard 70 in circumferential motion of the present invention is axially located above the turntable mainboard 70, and the rotating shaft 71 can be made as long as possible. In this embodiment, one end of the fixed seat assembly 73 is axially connected to one of the fixing members 72, and the other end is connected to the motor 74. The coupling 75 is located within the fixed seat assembly 73. When the motor 74 is in operation, it drives the rotating shaft 71 to rotate, thereby driving the turntable mainboard 70 in circumferential motion, thereby switching between objective lenses 11a of different magnifications. The specific type of the fixed seat assembly 73 is not limited, as long as it can support the rotating shaft 71.

[0074] refer to Figure 16 、 Figure 17 and Figure 19 In this embodiment, there are two fixing members 72, one of which is in contact with the fixing seat assembly 73, and the other is in contact with the mounting reference plate 51. This arrangement forms a rigid connection between the mounting reference plate 51, the two fixing members 72, the fixing seat assembly 74, and the turntable positioning structure mainboard 52, better supporting the rotating shaft 71 and further reducing the possibility of the rotating shaft 71 wobbling. Moreover, since the short arm of the rotating shaft 71 drives the turntable mainboard 70, the stability of the turntable mainboard 70 in circumferential motion is improved, the positioning accuracy of the objective lens is improved, and the measurement accuracy of the microscope is further improved. It should be noted that the fixing member 72 is not limited to being connected to the fixing seat assembly 73 and the mounting reference plate 51, and it is sufficient to be able to fix the rotating shaft 71.

[0075] Continue to refer Figure 15 and Figure 16 The turntable main plate 70 is provided with a first positioning member 76, and the mounting base plate 51 is provided with a second positioning member 77. When the turntable main plate 70 rotates circumferentially to an objective lens of a certain magnification, the first positioning member 76 and the second positioning member 77 cooperate with each other to limit the circumferential movement of the turntable main plate 70. 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 separate. For example, when the motor 74 is working and the turntable main plate 70 rotates circumferentially, when the microscope switches from a low-magnification objective lens to a high-magnification objective lens, the first positioning member 76 and the second positioning member 77 cooperate with each other to position the objective lens. The motor 74 stops working, limiting the circumferential movement of the turntable main plate 70, and the microscope can stably observe the sample under the high-magnification objective lens. When a low-magnification objective lens is needed, the motor 74 continues working. At this time, the first positioning member 76 and the second positioning member 77 separate, and the turntable main plate 70 can rotate circumferentially, and the microscope switches from a high-magnification objective lens to a low-magnification objective lens.

[0076] 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. Figure 16 、 Figure 18 and Figure 19 A first positioning member 76 is provided on the portion of the turntable main plate 70 facing the mounting base plate 51. The first positioning member 76 is a groove. A second positioning member 77 is provided on the portion of the mounting base plate 51 facing the turntable main plate 70. The second positioning member 77 is a bearing. A fixing rod 79 extending axially is provided on the mounting base plate 51. The bearing is sleeved on the fixing rod 79. A fixing sheet metal 78 is provided on the portion of the mounting base plate 51 facing the turntable main plate 70. The fixing rod 79 is mounted on the fixing sheet metal 78. The bearing can rotate around the fixing rod 79.

[0077] When the turntable main board 70 rotates circumferentially to an objective lens of a certain magnification, the bearing is located in the groove, which plays the role of positioning the objective lens. The motor stops working, limiting the circumferential movement of the turntable main board 70. When switching from an objective lens of a certain magnification to an objective lens of another magnification, the motor 74 works, and relative rotation occurs between the bearing and the groove, so that the first positioning member 76 and the second positioning member 77 are separated, and the turntable main board 70 can continue to move circumferentially.

[0078] refer to Figure 2 、 Figure 5 and Figures 13 to 15 The present invention further provides an imaging assembly 11, comprising: the objective lens turret 6 described in any of the above embodiments, and at least two objective lenses 11a, the objective lenses 11a being mounted on a turntable main board 70. In this embodiment, the objective lenses 11a are mounted on the side of the turntable main board 70 that is away from the mounting reference plate 51.

[0079] refer to Figure 1 Combined with Figures 13 to 15 As shown, the present invention further provides a microscope 1, comprising: the imaging component 11 described in the above embodiment.

[0080] In summary, the above embodiments provided by the present invention are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed herein shall be encompassed by the claims of the present invention.

Claims

1. An objective lens adjustment device, wherein the objective lens adjustment device is mounted on an objective lens, characterized in that: include: A first sleeve having a mounting member, wherein the mounting member is used to be fixedly connected to one axial end of the objective lens; a second sleeve, configured to surround the objective lens in a circumferential direction, with a radial gap between an outer surface of the objective lens and an inner surface of the second sleeve, and an axial direction wherein a lower end surface of the first sleeve is placed on an upper end surface of the second sleeve; a third sleeve, disposed around the first sleeve and the second sleeve, with a radial gap between an inner surface of the third sleeve and an outer surface of the first sleeve, and threadedly connected to the outer surface of the second sleeve; an adjusting member, provided on the third sleeve, for driving the first sleeve to translate along the radial direction on the upper end surface of the second sleeve; The mounting piece is an internal thread of the first sleeve, one axial end of the objective lens has an external thread, and the first sleeve and the objective lens are threadedly connected.

2. The objective lens adjustment device according to claim 1, wherein Also includes: An elastic member is provided on the upper end surface of the first sleeve.

3. The objective lens adjustment device according to claim 1, wherein The lower end surface of the second sleeve is provided with at least one notch along the circumferential direction.

4. The objective lens adjustment device according to claim 1, wherein 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 along the radial direction.

5. The objective lens adjustment device according to claim 4, wherein: There are at least two screw mounting holes, which are arranged along the circumference.

6. The objective lens adjustment device according to claim 2, wherein: The elastic member is a triple-peak washer.

7. An imaging assembly, comprising: Install the reference plate; an objective lens, wherein one axial end of the objective lens is axially arranged opposite to the mounting reference plate; The objective lens adjustment device according to any one of claims 1 to 6, wherein one axial end of the third sleeve is mounted on the mounting reference plate, and the first sleeve is sleeved on one axial end of the objective lens.

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

9. The imaging assembly according to claim 7, wherein: There are at least two objective lens adjustment devices, which are arranged on the mounting reference plate along the circumferential direction.

10. A microscope, characterized in that: include: The imaging assembly according to any one of claims 7 to 9.

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