Diaphragm adjustment mechanism, turntable condenser and microscope

Abstract

The present invention discloses a diaphragm adjusting mechanism, a rotary condenser and a microscope. The diaphragm adjusting mechanism includes a diaphragm seat, a diaphragm movable seat, a diaphragm swing rod, a handle and a pendulum rod. The diaphragm movable seat is rotatably installed in the diaphragm seat. The diaphragm swing rod is connected to the diaphragm movable seat. Both the handle and the pendulum rod have a first end close to the diaphragm movable seat and a second end far from the diaphragm movable seat. The first end of the handle and the second end of the pendulum rod are respectively hinged through a fixed swing point, and each fixed swing point is on the swing angle center line of the diaphragm swing rod. The first end of the pendulum rod is slidably hinged to the diaphragm swing rod, and the middle part of the pendulum rod is slidably hinged to the middle part of the handle. The second end of the handle floats to form a hand-held part. By designing a linkage mechanism in the control of the diaphragm part in the present invention, the handle is used to drive the opening and closing size of the diaphragm. Through the action of the linkage mechanism, the pendulum rod is extended and the movement stroke is shortened, overcoming the drawbacks of blind adjustment or the need to extend the rod length in the traditional method.

Description

Technical Field

[0001] The invention relates to a microscope, in particular to a light barrier adjustment mechanism, a rotating disk condenser and a microscope. Background Art

[0002] The diaphragm adjustment mechanism is an important part of the condenser, and the condenser is an important part of the microscope. The existing diaphragm adjustment mechanism for adjusting the aperture diaphragm generally includes a diaphragm seat, a diaphragm movable seat and a diaphragm swing rod. The diaphragm movable seat is rotatably mounted on the diaphragm seat, and the diaphragm swing rod is connected to the diaphragm movable seat. The movable seat can be rotated by turning the diaphragm swing rod.

[0003] For example, the utility model patent with authorization announcement number CN205942075U and titled “A device for precisely adjusting the light barrier of a microscope” discloses the light barrier swing rod of the above-mentioned type.

[0004] Condensers are widely used in phase contrast microscopes and Hoffman microscopes. Objective lenses of different magnifications on phase contrast microscopes need to be used with the corresponding annular light bars on the phase contrast condenser; objective lenses of different magnifications on Hoffman microscopes also need to be used with the corresponding slit light bars on the Hoffman condenser; the switching of objective lenses of different magnifications on microscopes is often achieved through the cooperation of a turntable, and thus the turntable condenser was proposed.

[0005] Since the turntable of the turntable condenser is extended, the light barrier swing rod of the light barrier part under the turntable will be blocked by the turntable. If the light barrier swing rod is not extended, the light barrier adjustment becomes blind adjustment, and the real-time status of the light barrier cannot be understood in real time. If the light barrier swing rod is directly lengthened, the shape of the turntable requires space, which will result in that at the same reference point and the same angle, the larger the circle, the greater the swing stroke of the swing rod. Both blind adjustment and direct lengthening of the swing rod will bring many inconveniences to users. Summary of the invention

[0006] One of the purposes of the present invention is to provide a diaphragm adjustment mechanism, which aims to reduce the movement stroke required when adjusting the aperture diaphragm and reduce the influence of the turntable diameter on the aperture diaphragm adjustment.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] The diaphragm adjusting mechanism includes a diaphragm base, a diaphragm movable seat and a diaphragm swing rod. The diaphragm movable seat is rotatably installed in the diaphragm base, and the diaphragm swing rod is connected to the diaphragm movable seat. It further includes a handle and a swing rod. Both the handle and the swing rod have a first end close to the diaphragm movable seat and a second end far from the diaphragm movable seat. The first end of the handle and the second end of the swing rod are respectively hinged through a fixed swing point, and each fixed swing point is on the swing angle center line of the diaphragm swing rod. The first end of the swing rod is slidably hinged to the diaphragm swing rod, the middle part of the swing rod is slidably hinged to the middle part of the handle, and the second end of the handle floats to form a hand-held part.

[0009] Further, a first chute is provided on the diaphragm swing rod, and a first movable swing point corresponding to the first chute is provided on the swing rod. A second chute is provided in the middle of the swing rod, and a second movable swing point corresponding to the second chute is provided on the handle.

[0010] Further, the handle, the diaphragm swing rod and the swing rod are distributed from top to bottom. The first end of the handle is hinged through an upper fixed swing point, and the second end of the swing rod is hinged through a lower fixed swing point.

[0011] In the present invention, a linkage mechanism is designed for the control of the diaphragm part. The opening and closing size of the diaphragm is driven by the handle. Through the action of the linkage mechanism, the swing rod is extended, the movement stroke is shortened, and the disadvantages of blind adjustment or the need to extend the rod length in the traditional method are overcome.

[0012] The second object of the present invention is to provide a turntable condenser which uses the aforementioned diaphragm adjusting mechanism to reduce the influence of the turntable diameter on the stroke required for diaphragm adjustment.

[0013] To achieve the above object, the present invention adopts the following technical solutions:

[0014] The turntable condenser includes a turntable assembly and a diaphragm adjusting mechanism provided below the turntable assembly. The diaphragm adjusting mechanism is the diaphragm adjusting mechanism as described above.

[0015] Further, the diaphragm adjusting mechanism further includes a first anti-friction pad and a second anti-friction pad. The first anti-friction pad is arranged above the handle along the swinging direction of the handle, and the second anti-friction pad is arranged below the swing rod along the swinging direction of the swing rod.

[0016] Further, the turntable assembly includes a turntable lower cover. A scale indication area is provided on the turntable lower cover at a position corresponding to the hand-held part of the handle, and a scale pointer is provided on the hand-held part of the handle.

[0017] Further, the turntable assembly includes a turntable, an upper cover housing of the turntable, a movable ring seat and a damping member; a plurality of first mounting cavities are distributed along the circumference of the turntable, the movable ring seat is placed in the first mounting cavity and has a certain radial movement amount; the movable seat is rotatably mounted in the movable ring seat, and the movable ring seat applies radial damping to the movable seat; the damping member eliminates the axial clearance between the movable seat and the movable ring seat and provides damping.

[0018] Further, the movable seat has a lower flange that fits with the movable ring seat, and elastic claws formed by the elastic deformation of its own material are provided on the ring wall of the movable ring seat and point to the lower flange under the extrusion of an external force to eliminate the radial clearance, and the movable seat forms a damped fixation with the movable ring seat through the elastic claws.

[0019] Further, a replacement hole and an upper end cover are provided on the upper cover housing of the turntable, the aperture of the replacement hole is larger than the diameters of the movable seat and the movable ring seat, and the upper end cover closes the replacement hole.

[0020] In the present invention, by designing a link mechanism in the aperture stop part of the turntable condenser, the opening and closing size of the aperture stop is driven by a handle. Through the action of the link mechanism, the swing rod is extended, the movement stroke is shortened, and it is no longer restricted by the size of the turntable diameter, avoiding the disadvantages of blind adjustment or the need to extend the rod length in the traditional method.

[0021] The third object of the present invention is to provide a microscope that uses a turntable condenser with a small movement stroke to flexibly and accurately adjust the aperture stop.

[0022] To achieve the above object, the present invention adopts the following technical solutions:

[0023] A microscope, including a turntable condenser, and the turntable condenser is the turntable condenser as described above.

[0024] The microscope of the present invention uses a stop adjustment mechanism for range extension, moving the swing point P1 that should be located at the center of the stop movable seat to the outer circle of the turntable to P2, reducing the requirement for increasing the rod length of the handle due to the increase of the turntable, and facilitating the user to adjust the stop. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the aperture stop adjustment mechanism (closed state) of the present invention;

[0026] Figure 2 Schematic diagram of the aperture stop adjustment mechanism (open state) of the present invention;

[0027] Figure 3 Back view schematic diagram of the aperture stop adjustment mechanism of the present invention;

[0028] Figure 4Schematic diagram of the moving stroke of the swing rod;

[0029] Figure 5 Side view of the turntable condenser;

[0030] Figure 6 Front view of the turntable condenser;

[0031] Figure 7 Main structure diagram of the turntable condenser;

[0032] Figure 8 Exploded view of the turntable movable seat;

[0033] Figure 9 Schematic diagram of the movable ring seat;

[0034] Figure 10 Another schematic diagram of the movable ring seat;

[0035] Figure 11 Partial schematic diagram of the movable seat;

[0036] Figure 12 Front view of the gesture of the condenser;

[0037] Figure 13 Schematic diagram of the internal adjustment gesture of the condenser turntable;

[0038] Figure 14 Schematic diagram of the interchange of the movable seat;

[0039] Figure 15 Side view of the turntable condenser on the microscope frame;

[0040] Figure 16 Schematic diagram of the gesture of the turntable condenser on the microscope frame.

[0041] Explanation of reference numerals:

[0042] Iris diaphragm adjustment mechanism 110, iris diaphragm seat 111, iris diaphragm movable seat 112, iris diaphragm blade 1121, iris diaphragm swing rod 113, first chute 1131, swing rod 114, second fixed swing point 1141, first movable swing point 1142, second chute 1143, handle 115, first fixed swing point 1151, second movable swing point 1152, scale pointer 1153, upper gasket 1154, lower gasket 1155; first anti-friction pad 116, second anti-friction pad 117;

[0043] Rotary condenser 100, condenser 120, lens 121, turntable 130, first mounting cavity 131, positioning pin 132, upper cover of turntable 140, relief cutting edge 141, replacement hole 142, upper end cover 143, lower cover of turntable 150, scale indication area 151, decorative cover 160, movable seat 170, second mounting cavity 171, ring plate 172, movable ring seat 180, deformation groove 181, notch 182, damping member 190, upper wear-resistant washer 191, lower wear-resistant washer 192, retaining ring 193;

[0044] Fingers g1g1;

[0045] Frame 200, condenser bracket 300, stage 400, stage bracket 500, finger adjustment area 600. Specific embodiments

[0046] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Additionally, it should be noted that:

[0047] The terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the devices or elements of the present invention must have a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0048] When an element is referred to as "fixed to" or "disposed on" or "provided on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0049] Unless otherwise clearly defined and limited, the terms "installed", "connected", and "joined" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0050] Embodiment 1

[0051] Please refer to Figures 1-4As shown in the figure, the present invention discloses a diaphragm adjusting mechanism, which includes a diaphragm seat 111, a diaphragm movable seat 112, a diaphragm swing rod 113, a handle 115 and a swing rod 114.

[0052] Among them, the diaphragm movable seat 112 is rotatably installed in the diaphragm seat 111, and the diaphragm swing rod 113 is connected to the diaphragm movable seat 112 to rotate the diaphragm swing rod 113.

[0053] The handle 115 has a first end close to the diaphragm movable seat 112 and a second end far from the diaphragm movable seat 112. The first end of the handle 115 is hinged through a first fixed swing point 1151, and the second end of the handle 115 floats to form a hand-held part.

[0054] The swing rod 114 has a first end close to the diaphragm movable seat 112 and a second end far from the diaphragm movable seat 112. The first end of the swing rod 114 is slidably hinged to the diaphragm swing rod 113, and the second end of the swing rod 114 is hinged through a second fixed swing point 1141.

[0055] Each fixed swing point (the first fixed swing point 1151 and the second fixed swing point 1141) is on the swing angle center line of the diaphragm swing rod 113. It is easy to understand that the swing angle described here refers to the adjustable swing angle of the diaphragm swing rod 113, that is, the included angle formed by the diaphragm swing rod 113 between the preset left limit position and the preset right limit position. The fixed swing point means that during the movement of each rod member, the position of the fixed swing point does not change.

[0056] The middle part of the swing rod 114 is slidably hinged to the middle part of the handle 115. Thus, when the swing rod 114 and the handle 115 are unfolded, they are roughly in an X shape, while the diaphragm swing rod 113 and the handle 115 are parallel. Thus, the swinging action of the handle 115 is transmitted to the diaphragm swing rod 113 at the same angle, realizing the swinging of the diaphragm swing rod 113 and then adjusting the diaphragm movable seat 112.

[0057] In this embodiment, a first chute 1131 is provided on the diaphragm swing rod 113, and a first movable swing point 1142 corresponding to the first chute 1131 is provided on the swing rod 114; a second chute 1143 is provided in the middle of the swing rod 114, and a second movable swing point 1152 corresponding to the second chute 1143 is provided on the handle 115. The first movable swing point 1142 and the second movable swing point 1152 are in a pin shape. Thus, they cooperate with the first chute 1131 and the second chute 1143 to achieve slidable hinging.

[0058] In this embodiment, the handle 115, the diaphragm swing rod 113 and the swing rod 114 are distributed from top to bottom. The first fixed swing point 1151 is the upper fixed swing point, and the second fixed swing point 1141 is the lower fixed swing point. In other words, in the installation environment of the diaphragm adjustment mechanism 110, the first fixed swing point 1151 is connected to the installable housing on its upper side, and the second fixed swing point 1141 is connected to the installable housing on its lower side. In this way, during the rotation of the handle 115, the diaphragm swing rod 113 and the swing rod 114 do not interfere with each other, and the structure in the height direction is more compact.

[0059] In the present invention, a linkage mechanism is designed for the control of the diaphragm part. The handle 115 drives the opening and closing size of the diaphragm. Through the action of the linkage mechanism, the swing rod 114 is extended, the movement stroke is shortened, and the disadvantages of blind adjustment or the need to extend the rod length in the traditional method are avoided.

[0060] Specifically:

[0061] Please refer to Figure 1 As shown, when the handle 115 is swung to the right, the swing rod 114 is driven by the second movable swing point 1152 in the middle of the handle 115 to swing to the right. At the same time, the diaphragm swing rod 113 is driven by the first fixed swing point 1151 at the first end of the swing rod 114 to move to the right. At this time, the diaphragm is in the closed state. Please refer to Figure 2 As shown, when the handle 115 is swung to the left, the swing rod 114 is driven by the second movable swing point 1152 in the middle of the handle 115 to swing to the left. At the same time, the diaphragm swing rod 113 is driven by the first fixed swing point 1151 at the first end of the swing rod 114 to move to the left. At this time, the diaphragm is in the open state.

[0062] That is, the linkage mechanism ensures that the handle 115 and the diaphragm swing rod 113 move in the same direction, opening to the left and closing to the right. Through the linkage mechanism, the swing point P1 that should originally be located at the center of the diaphragm movable seat 112 is moved to the outer circle of the turntable 130 to P2. In this way, under the same included angles r1 and r2, the required movement stroke k1 for rotating the handle 115 outside the turntable 130 is smaller than the movement stroke k2 of the diaphragm swing rod 113, reducing the movement stroke.

[0063] Embodiment 2

[0064] Please refer to Figures 1-14 As shown, the present invention discloses a turntable type condenser 100, which includes a condenser 120, a turntable assembly and a diaphragm adjustment mechanism 110 provided below the turntable assembly.

[0065] Among them, the diaphragm adjustment mechanism 110 adopts the diaphragm adjustment mechanism 110 as described in Embodiment 1 to reduce the influence of the diameter of the turntable 130 on the required stroke for diaphragm adjustment. The same parts will not be described in detail in this embodiment.

[0066] Please refer toFigures 5-14 As shown, the turntable assembly includes a turntable 130, an upper turntable housing 140, a lower turntable housing 150, a decorative cover 160, a number of movable seats 170, a movable ring seat 180, and a damping member 190. The upper turntable housing 140 and the lower turntable housing 150 are combined to form a housing cavity part for accommodating and installing the turntable 130. The movable seats 170, the movable ring seat 180, and the damping member 190 are arranged in the turntable 130. An installation space for the diaphragm adjusting mechanism 110 is formed between the lower turntable housing 150 and the decorative cover 160.

[0067] Correspondingly, in the diaphragm adjusting mechanism 110, the first end of the handle 115 is hinged to the bottom of the lower turntable housing 150 through a first set screw as the first fixed swing point 1151; the second end of the swing rod 114 is hinged to the bottom of the cavity of the decorative cover 160 through a second set screw as the second fixed swing point 1141.

[0068] Please refer to Figures 1-4 , and Figure 5 As shown, to prevent friction during the movement of the handle 115 from affecting the operation feel, the diaphragm adjusting mechanism 110 further includes a first anti-friction pad 116 and a second anti-friction pad 117. Among them, the first anti-friction pad 116 is arranged above the handle 115 along the swinging direction of the handle 115. Specifically, in this embodiment, it is arc-shaped and spans the entire swing angle stroke of the handle 115. The second anti-friction pad 117 is arranged below the swing rod 114 along the swinging direction of the swing rod 114. The second anti-friction pad 117 is straight and spans the entire swing angle stroke of the swing rod 114.

[0069] Please refer to Figure 6 and Figure 14 As shown, the lower turntable housing 150 is provided with a scale indication area 151 at a position corresponding to the hand-held part of the handle 115, and a scale pointer 1153 is provided on the hand-held part of the handle 115. In this way, through the correspondence between the scale pointer 1153 and the scale indication area 151, the real-time state of the diaphragm can be clearly understood, improving the user experience.

[0070] In addition, in the prior art, the position adjustment of the annular diaphragm is not convenient enough. Specifically, in the prior art solution one, the internal annular diaphragm is centered and adjusted, centered by default at the factory, and not adjustable by the customer; its advantage is independent configuration, and its disadvantage is non-expandability, and the fixed type cannot be adjusted. In the prior art solution two, the internal annular diaphragm is centered and adjusted, and the method of distributing three points against the top is used to center it. A reference point is set internally, with a spring ejecting out, and the other two points are left for the user to adjust deeply through tools; its advantage is adjustability and expandability, and its disadvantage is that specific tools are required, and adjustments are required at specific positions. The supporting equipment needs to reserve tool clearance and calibration space, and the operation is complex and has limitations.

[0071] Therefore, this embodiment also proposes a new structure to solve the problem of difficult adjustment of the annular aperture stop, and then cooperate with the aperture stop adjustment mechanism 110 of the aperture diaphragm to provide a turntable condenser 100 that is easy to adjust and improve the user experience.

[0072] Please refer to Figure 8 As shown, a plurality of first mounting cavities 131 are provided along the circumferential direction of the turntable 130. In this embodiment, a 3 + 1 arrangement scheme is adopted, that is, it includes 3 first mounting cavities 131 and a through hole. Correspondingly, there are three groups of components formed by the movable ring seat 180 and the movable seat 170 and other components, which are respectively installed in each first mounting cavity 131.

[0073] Specifically, in the present invention, the movable ring seat 180 is placed in the first mounting cavity 131, and it has a certain radial movement amount relative to the first mounting cavity 131. In this way, the movable ring seat 180 can adjust its position relative to the first mounting cavity 131. The movable seat 170 is installed in the movable ring seat 180 and is rotatable relative to the movable ring seat 180, and the movable ring seat 180 applies radial damping to the movable seat 170. The damping member 190 is disposed between the movable seat 170 and the movable ring seat 180 to eliminate the axial clearance and provide a certain damping (to prevent abnormal displacement and facilitate adjustment).

[0074] In this way, since the movable ring seat 180 is movably placed in the first mounting cavity 131, the movable ring seat 180 itself can rotate 360° relative to the first mounting cavity 131. And here, the movable seat 170 is rotatable relative to the movable ring seat 180, but the movable ring seat 170 applies radial damping to the movable seat 180. The purpose is to avoid directly affecting the movable ring seat 170 when rotating the movable seat 180, resulting in the movable ring seat 180 deviating from the adjusted position. Thus, the adjustment efficiency is improved.

[0075] Specifically, the movable seat 170 has a lower flange that fits with the movable ring seat 180. An elastic claw that is recessed inward due to the elastic deformation of its own material is provided on the ring wall of the movable ring seat 180 by external force extrusion to eliminate the radial clearance. In this embodiment, the elastic claw is formed by providing a circumferential deformation groove 181 on the ring wall of the movable ring seat 180 and a notch 182 that cuts off the edge of the deformation groove 181. In this embodiment, the notch 182 is axially pressed inward to form an elastic claw, so that the elastic claw of the movable ring seat 180 and the movable seat 170 form a damping type fixation.

[0076] It is easy to understand that the elastic claw can be obtained by opening a notch 182 and extrusion, or can be obtained without opening a notch. The present application does not make specific limitations. At the same time, in this embodiment, the shape of the deformation groove 181 is not specifically limited, and it can be as Figure 9 and Figure 10The various forms shown can also be other forms that can generate damping through the radial elastic deformation of the material, that is, the deformation groove 191 can be cut into various irregular shapes along the circumferential direction according to actual needs. Knurling is provided on the edge of the movable seat 170 to facilitate the adjustment by finger g1.

[0077] More specifically, the damping member 190 is an elastic wave washer, which is sleeved between the movable ring seat 180 and the movable seat 170. To reduce friction and improve the feel, the present invention further provides an upper wear-resistant washer 191, a lower wear-resistant washer 192 and a retaining ring 193. Among them, the upper wear-resistant washer 191 is located between the elastic wave washer and the movable ring seat 180, and the lower wear-resistant washer 192 is located between the movable ring seat 180 and the first installation cavity 131. The retaining ring is provided between the movable seat 170 and the elastic wave washer. Through the action of the upper wear-resistant washer 191, the lower wear-resistant washer 192 and the retaining ring 193, the friction between the sleeved parts is reduced.

[0078] Thus, please refer to Figure 12 As shown, when the turntable 130 rotates to drive the movable seat 170 to the working position, the left and right fingers g1 can penetrate into the finger adjustment area, and the left and right fingers are pressed against the knurled edge of the movable seat 170. Through the cooperation of the left and right fingers, the movable seat 170 can be rotated 360 degrees. At the same time, the movable ring seat 180 is provided with a corresponding moving space. Similarly, by pushing the left and right fingers against each other, the movable seat 170 can be quickly moved to the working position. The operation is simple, and quick movement and rotation can be achieved.

[0079] For the convenience of adjusting finger g1, please refer to Figure 12 and Figure 13 As shown, in this embodiment, the upper cover 140 of the turntable is provided with relief cut edges 141 on both sides corresponding to the position of the condenser lens 120 to facilitate the penetration of finger g1, and the relief cut edges 141 are in a crescent arc shape.

[0080] Please refer to Figure 7 and Figure 8 As shown, a second installation cavity 171 is provided in each movable seat 170 to install the ring plate 172, and the ring plate 172 can be replaced according to different applications and different requirements. For the convenience of removing and replacing the movable seat 170, please refer to Figure 7 , Figure 13 and Figure 14 As shown, the upper cover 140 of the turntable is provided with a replacement hole 142 and an upper end cover 143. The diameter of the replacement hole 142 is larger than the diameters of the movable seat 170 and the movable ring seat 180, and the upper end cover 143 closes the replacement hole 142. When the movable seat 170 needs to be replaced, the corresponding movable seat 170 is rotated to the lower part of the replacement hole 142, and the upper end cover 143 is opened. At this time, the movable seat 170 and the like can be taken out for replacement. For the convenience of operation, in this embodiment, the replacement hole 142 is in the shape of a rhombic round hole.

[0081] In the present invention, a linkage mechanism is designed and controlled for the aperture part of the turntable condenser 100. The opening and closing size of the aperture is driven by the handle 115. Through the action of the linkage mechanism, the swing rod 114 is extended, the movement stroke is shortened, and it is no longer restricted by the diameter of the turntable 130, avoiding the drawbacks of blind adjustment or the need to extend the rod length in the traditional method.

[0082] In addition, the turntable condenser 100 of the present invention is provided with a movable ring seat 180, and the diameter of the movable ring seat 180 is smaller than the cavity diameter of the first installation cavity 131 to have a certain radial offset amount; the movable seat 170 is installed in the movable ring seat 180 and has a certain angular rotation amount relative to the movable ring seat 180; and the axial clearance is eliminated and damping is provided through the damping member 190; thus, the corresponding cooperation of the left and right fingers g1 on both sides can be used to achieve quick movement and centering; at the same time, through the mutual cooperation of the left and right fingers g1 on both sides, 360-degree rotation of the movable seat 170 can be achieved, and the annular aperture or slit aperture is rotated synchronously.

[0083] Embodiment 3

[0084] Please refer to Figures 15-16 As shown, the third object of the present invention is to provide a microscope, which includes a turntable condenser 100, a frame 200, a condenser bracket 300, a stage 400, and a stage bracket 500. There is a finger adjustment area 600 for operating the movable seat on the turntable between the turntable condenser 100 and the stage bracket 500.

[0085] In the present invention, the turntable condenser 100 adopts the turntable condenser 100 as described in Embodiment 2, and the same parts will not be elaborated here. Thus, the microscope can use the aperture adjustment mechanism 110 with a small movement stroke in the turntable condenser 100 to flexibly and accurately adjust the aperture diaphragm.

[0086] In the present invention, the microscope can be a phase-contrast microscope or a Hoffman microscope. Then, based on the turntable condenser 100 of Embodiment 2, the present invention can quickly center the phase-contrast annular aperture in the phase-contrast mode, and quickly move and rotate the slit fixed seat 360 degrees to find the position in the Hoffman slit mode.

[0087] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A diaphragm adjusting mechanism, comprising a diaphragm base, a diaphragm movable seat and a diaphragm swing rod. The diaphragm movable seat is rotatably installed in the diaphragm base, and the diaphragm swing rod is connected to the diaphragm movable seat. It is characterized in that: It further includes a handle and a swing rod, and the handle, the diaphragm swing rod and the swing rod are distributed from top to bottom; both the handle and the swing rod have a first end close to the diaphragm movable seat and a second end far from the diaphragm movable seat. The first end of the handle is hinged to the upper-side installable housing of the diaphragm adjusting mechanism through a first fixed swing point, and the second end of the swing rod is hinged to the lower-side installable housing of the diaphragm adjusting mechanism through a second fixed swing point. And each fixed swing point is on the swing angle center line of the diaphragm swing rod. The first end of the swing rod is slidably hinged to the diaphragm swing rod, the middle part of the swing rod is slidably hinged to the middle part of the handle, and the second end of the handle floats to form a handheld part.

2. The diaphragm adjusting mechanism according to claim 1, characterized in that: A first sliding groove is provided on the diaphragm swing rod, and a first movable swing point corresponding to the first sliding groove is provided on the swing rod; a second sliding groove is provided in the middle of the swing rod, and a second movable swing point corresponding to the second sliding groove is provided on the handle.

3. A turntable condenser, comprising a turntable assembly and a diaphragm adjusting mechanism provided below the turntable assembly. It is characterized in that: The diaphragm adjusting mechanism is the diaphragm adjusting mechanism according to any one of claims 1-2.

4. The turntable condenser according to claim 3, characterized in that: The diaphragm adjusting mechanism further includes a first anti-friction pad and a second anti-friction pad. The first anti-friction pad is arranged above the handle along the swinging direction of the handle, and the second anti-friction pad is arranged below the swing rod along the swinging direction of the swing rod.

5. The turntable condenser according to claim 3, characterized in that: The turntable assembly includes a turntable lower cover. The turntable lower cover is provided with a scale indicating area at a position corresponding to the handheld part of the handle, and a scale pointer is provided on the handheld part of the handle.

6. The turntable condenser according to claim 3, characterized in that: The turntable assembly includes a turntable, a turntable upper cover, a movable ring seat and a damping member; a plurality of first installation cavities are distributed along the circumference of the turntable. The movable ring seat is placed in the first installation cavity and has a certain radial movement amount; the movable seat is rotatably installed in the movable ring seat, and the movable ring seat applies radial damping to the movable seat; the damping member eliminates the axial clearance between the movable seat and the movable ring seat and provides damping.

7. The turntable condenser according to claim 6, characterized in that: The movable seat has a lower flange fitted to the movable ring seat. Elastic claws formed by the elastic deformation of its own material are provided on the ring wall of the movable ring seat and point to the lower flange under external force extrusion to eliminate the radial clearance. The movable seat forms a damped fixation with the movable ring seat through the elastic claws.

8. The turntable condenser according to claim 6, characterized in that: The turntable upper cover is provided with a replacement hole and an upper end cover. The aperture of the replacement hole is larger than the diameters of the movable seat and the movable ring seat, and the upper end cover closes the replacement hole.

9. A microscope, comprising a turntable condenser. It is characterized in that: The turntable condenser is the turntable condenser according to any one of claims 3-8.

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