CN216485769U - Automatic focusing device for microscope - Google Patents
Automatic focusing device for microscope Download PDFInfo
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- CN216485769U CN216485769U CN202123249335.1U CN202123249335U CN216485769U CN 216485769 U CN216485769 U CN 216485769U CN 202123249335 U CN202123249335 U CN 202123249335U CN 216485769 U CN216485769 U CN 216485769U
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Abstract
The utility model discloses an automatic focusing device of a microscope, which comprises a fixed component, a fixed component and a movable component, wherein the fixed component is provided with a vertical supporting unit and an upper mounting unit; a camera shooting component arranged on the upper mounting unit; the objective lens assembly is arranged on the vertical supporting unit below the camera shooting assembly, and the top of an objective lens of the objective lens assembly is connected with the camera shooting assembly; the transmission mechanism drives the objective lens assembly to ascend and descend and adjusts the focal distance between the objective lens and the slide to be detected; an objective lens focus detection assembly; a carrier assembly; and a light source assembly. The utility model discloses an objective lens subassembly, carry the coaxial setting of thing subassembly and light source subassembly on the riser and the camera shoots the subassembly setting on last mounting panel, has overturned traditional standard microscope's structural design, and the design is more reasonable, and the structure is compacter, and drive mechanism sets up and is lieing in between carrying the thing subassembly and carrying the thing subassembly, and compact structure can match with the piece that send of slide and piece withdrawing device, lays the basis for the full automation mirror examination of realization slide.
Description
Technical Field
The utility model relates to a microscope technique especially relates to a microscope automatic focusing device.
Background
The microscope is a commonly used in vitro diagnosis and detection device, is used for magnifying and observing cells, bacteria, hyphae and the like in body fluid (such as leucorrhea, blood, urine, sputum and the like) of a patient clinically, and provides a basis for clinical diagnosis.
Traditional microscope microscopic examination needs manual detection, and the manual operation microscope carries out image analysis and judgment promptly, and nevertheless every sample slide all need focus many times and the comparison of shooing, and complex operation is consuming time longer, and appears confusing phenomenon easily when handling a plurality of different slides, leads to cross contamination to appear between the sample, influences clinical diagnosis result's accuracy.
In order to solve the problems, a full-automatic microscope is also available in the market at present, and the full-automatic microscope adopts a distributed control technology and a modular embedded structure to realize the XYZ three-axis control of an object stage and the automatic adjustment of the brightness of a light source, and realizes the automatic panoramic scanning, the automatic picture arrangement, the automatic return and the like through software. The existing full-automatic microscope realizes automatic focusing and automatic photographing, improves the detection efficiency of the slide, but still has the following defects:
firstly, the existing full-automatic microscope is improved aiming at the traditional standard microscope, the appearance of the existing full-automatic microscope is consistent with that of the traditional standard microscope, the requirement on the installation position is high, and the automatic detection in the complete sense is difficult to realize; the automatic focusing module of the microscope has high requirement on the internal space, the installation difficulty is high, and the calibration precision cannot be ensured; secondly, the light path of the existing full-automatic microscope mostly adopts a vertical light path, so that the occupied space is large, and the integral volume of the microscope is large; moreover, the existing full-automatic microscope has high requirements on the external environment, and when the external environment vibrates, the slide vibrates or misplaces, so that the shooting is influenced, and the misjudgment probability is high.
Disclosure of Invention
An object of the utility model is to provide a microscope automatic focusing device, this microscope automatic focusing device have not only overturned traditional standard microscope design, design more scientific and reasonable, lay the basis for realizing the automated inspection of full meaning, can also realize that the high accuracy of objective is focused, guarantee the reliability of the result of shooing, can also reduce the influence of external environment to the slide.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
microscope automatic focusing device, its characterized in that: comprises that
The fixing assembly is provided with a vertical supporting unit and an upper mounting unit, and the upper mounting unit is horizontally arranged at the upper part of the vertical supporting unit;
a camera shooting component arranged on the upper mounting unit;
the objective lens assembly is arranged on the vertical supporting unit below the camera shooting assembly, and the top of an objective lens of the objective lens assembly is connected with the camera shooting assembly;
the transmission mechanism is in transmission connection with the objective lens assembly so as to drive the objective lens assembly to ascend and descend and adjust the focal distance between the objective lens and the slide to be detected;
the objective lens focusing detection assembly is arranged on the vertical supporting unit and used for detecting the lifting height of the objective lens;
the carrying assembly is fixed on the vertical supporting unit and is positioned below the objective lens assembly; and
and the light source assembly is arranged in the mounting cavity of the object carrying assembly.
The utility model discloses an in the preferred embodiment, camera shooting subassembly includes the camera of level setting, the first lens cone of level setting and links firmly go up the second lens cone on the installation element, the second lens cone is 90 switching lens cones, the perpendicular connector of second lens cone with first lens cone links firmly together and its horizontal connector with objective links together.
In a preferred embodiment of the present invention, the objective lens assembly includes a guiding unit, an objective lens mounting unit fixedly connected to the guiding unit, and an objective lens disposed on the objective lens mounting unit.
The utility model discloses an in the preferred embodiment, objective installation unit is including linking firmly vertical connecting piece and the level setting on the guide unit are in horizontal installed part on the vertical connecting piece, the last first mounting hole that has of horizontal installed part, objective wears to establish in the first mounting hole and with the coaxial laying of horizontal connector.
The utility model discloses an in the preferred embodiment, objective focuses detection subassembly is including linking firmly the installed part of vertical connecting piece one side with link firmly mount pad on the vertical supporting unit, be provided with the grating chi, magnetic grid chi or the contact displacement sensor of vertical extension on the installed part. More preferably, the mounting member is provided with a grating ruler, and the mounting base is correspondingly provided with a read-write head matched with the grating ruler.
The utility model discloses an in the preferred embodiment, be located guide unit one side be provided with spacing subassembly on the vertical support unit, spacing subassembly is including the installation piece, the upper and lower both ends level extension of installation piece has a pair of spacing head, two spacing overhead symmetry is provided with and is used for injecing the locating part of vertical connecting piece stroke.
In the preferred embodiment of the present invention, a zero point sensor is disposed at the edge of the upper mounting unit, and a signal board matched with the zero point sensor is disposed on the objective lens mounting unit; a slide-to-position sensor (preferably a reflective sensor such as a photoelectric switch) for slide-to-position information is provided on the objective lens mounting unit.
In the preferred embodiment of the present invention, the transmission mechanism includes a power source disposed on the vertical supporting unit, a transmission assembly connected to the power source in a transmission manner, and a lifting assembly connected to the transmission assembly in a transmission manner, wherein the power source transmits power to the lifting assembly through the transmission assembly, so that the objective lens assembly ascends and descends.
In a preferred embodiment of the present invention, the lifting assembly includes a cam fixedly connected to the transmission assembly and a cam follower disposed at the bottom of the objective lens assembly, the cam is disposed above and below the cam follower, and the outer ring of the cam is tangent to the cam follower, and the cam follower brings the objective lens assembly to ascend and descend during the rotation of the cam.
In a preferred embodiment of the present invention, the transmission assembly includes a gear pair driven by the power source, the wheel shaft of the gear pair is rotatably disposed on the vertical supporting unit, and the cam is sleeved on the wheel shaft. The gear transmission pair comprises a driving gear arranged on a power shaft of a power source and a driven gear meshed with the driving gear, the driving gear and the driven gear are arranged at intervals up and down, and at least one positioning ring is sleeved on a wheel shaft of the driven gear to ensure the installation accuracy of the cam and the driven gear.
The utility model discloses an in the preferred embodiment, the thing subassembly is including carrying the thing frame, carry thing frame one side and link firmly on the vertical support unit, carry thing frame top and have an objective table that is used for placing the slide, the light source subassembly sets up in carrying the thing frame, the light source center of light source with objective coaxial line sets up.
The utility model discloses the advantage lies in compact structure, has overturned traditional standard microscope's design, designs more scientific and reasonable, and the structure is compacter, is convenient for get the device butt joint installation of putting the slide with realizing automatically, lays the basis for realizing the automated inspection in the sense completely. The method has the following specific advantages:
the first lens cone level of subassembly is shot to the camera sets up, and the second lens cone is 90 switching lens cones for the shooting light path of camera is L shape, compact structure, reasonable in design, makes the utility model discloses an overall high greatly reduced is convenient for install, maintain and change.
The utility model discloses an objective lens subassembly, carry the coaxial setting of thing subassembly and light source subassembly on the riser and the camera shoots the subassembly setting on last mounting panel, has overturned traditional standard microscope's structural design, and the design is more reasonable, and the structure is compacter, and drive mechanism sets up and is lieing in between carrying the thing subassembly and carrying the thing subassembly, and compact structure can match with the piece that send of slide and piece withdrawing device, lays the basis for the full automation mirror examination of realization slide.
The utility model discloses a drive assembly is gear drive pair, and lifting unit is cam and cam follower, and occupation space is less, the installation of being convenient for, and can guarantee the motion precision of objective, and then realizes the high accuracy adjustment of objective. The utility model discloses a shock attenuation unit can weaken the influence of external vibration to objective table and objective, has improved the stability of slide, further guarantees the definition of shooing.
The utility model utilizes the read-write head to read the height information on the grating ruler in real time, and the grating ruler feeds back the height position information of the objective lens in real time, thereby accurately mastering the focusing condition of the objective lens; the slide in-place sensor on the upper mounting unit can monitor the slide in-place condition on the objective table and feed back information in time, and the zero point sensor can monitor whether the objective lens is reset to the highest zero point position after detecting one slide, so that the focusing precision is further ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an isometric view of the present invention.
Fig. 3 is a schematic structural diagram of the transmission mechanism and the objective lens assembly according to the present invention.
Fig. 4 is a schematic structural diagram of an objective lens assembly according to the present invention.
Fig. 5 is an isometric view of an objective lens assembly according to the present invention.
Fig. 6 is a mounting state diagram of the transmission assembly and the cam according to the present invention.
Fig. 7 is a sectional view of fig. 6 (with the installation frame omitted).
Fig. 8 is an exploded view of the objective focus detection assembly of the present invention (omitting the grating scale).
Fig. 9 is a schematic structural view of the carrying frame of the present invention.
FIG. 10 is a view showing the installation position of the slide in-place sensor according to the present invention.
Fig. 11 is a schematic view of a light source module according to the present invention.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are provided, but the scope of the present invention is not limited to the following embodiments.
As shown in FIGS. 1-11, the automatic focusing device for microscope of the present invention comprises
The fixing assembly is provided with a vertical supporting unit and an upper mounting unit horizontally arranged on the vertical supporting unit;
a camera shooting component arranged on the upper mounting unit;
the objective lens assembly is arranged on the vertical supporting unit below the camera shooting assembly, an objective lens of the objective lens assembly is vertically arranged, and the top of the objective lens is connected with the second lens barrel 203 of the camera shooting assembly;
the transmission mechanism is in transmission connection with the objective lens assembly to drive the objective lens assembly to ascend and descend so as to realize the adjustment of the focal length of the objective lens;
the objective lens focusing detection assembly is arranged on the vertical supporting unit and used for detecting the lifting height of the objective lens;
the carrying assembly is fixedly connected to the vertical supporting unit and is positioned below the objective lens assembly; and
the light source assembly is arranged in the object carrying assembly, and a light source of the light source assembly is coaxially arranged with the objective lens;
when the detection is carried out (namely information on a slide is read), the transmission mechanism drives the objective lens assembly to automatically descend, meanwhile, the objective lens assembly detects the descending height of the objective lens in real time, the objective lens starts to be focused, after the focusing is finished, the camera shooting assembly shoots an amplified picture of a target object in a sample to be detected on the slide and records a video, and the transmission mechanism rotates in the opposite direction to enable the objective lens assembly to ascend and reset.
As shown in fig. 1-2, the fixing assembly further comprises a lower mounting unit and a shock absorbing unit disposed at the bottom of the lower mounting unit, the shock absorbing unit comprising a base 101 and a plurality of shock absorbing members (the shock absorbing members preferably having shock absorbing seats 102 with threaded holes) disposed on the base 101;
the lower mounting unit is a horizontally arranged lower mounting plate 103, mounting holes which are in one-to-one correspondence with the shock absorption seat 102 are formed in the lower mounting plate 103, and the lower mounting plate 103 is fixedly connected with the shock absorption seat 102 through bolts, so that the interference of an external environment (such as vibration) on a slide is overcome, and the stability of the slide is improved;
the vertical supporting unit is a vertical plate 104 vertically arranged at one edge of the lower base, the upper mounting unit is an upper mounting plate 105 horizontally arranged at the top of the vertical plate 104 (the upper mounting plate 105 is fixedly connected with the vertical plate 104 by screws, and the upper mounting plate 105 and the vertical plate 104 can be fixedly connected together by adopting welding modes, bonding modes and the like), the upper mounting plate 105 and the lower mounting plate 103 vertically correspond to each other, and the upper mounting plate 105 is provided with a mounting through hole 106 matched with the objective lens so as to connect the objective lens 305 and the camera shooting assembly together.
As shown in fig. 1-2, the camera shooting assembly includes a horizontally arranged camera 201, a horizontally arranged first lens barrel 202, and a second lens barrel 203 fixedly connected to the upper mounting plate 105, wherein one end of the first lens barrel 202 is fixedly connected to the camera 201; the second lens cone 203 is a 90-degree adapter lens cone (which is a right-angled triangular prism structure) with a vertical connecting port and a horizontal connecting port, the vertical connecting port of the second lens cone 203 is fixedly connected with the other end of the first lens cone 202, the horizontal connecting port of the second lens cone is connected with the objective lens, and the light path of the camera 201 is perpendicular to the slide after being reflected by the inclined plane of the second lens cone 203 so as to meet the photographing requirement of the slide; meanwhile, the camera shooting assembly is arranged on the upper mounting plate 105, and is simple and convenient to disassemble and convenient to maintain and replace.
As shown in fig. 1, the objective lens assembly includes a guide unit, an objective lens mounting unit and an objective lens 305 attached to the guide unit, and the guide unit can ensure a movement locus of the objective lens mounting unit. The method comprises the following specific steps:
as shown in fig. 10, the guide unit includes a first guide 301 fixed on the vertical plate 104 and a second guide 302 sliding up and down along the first guide 301, the first guide 301 is a guide block with a projection, the second guides 302 are guide blocks with guide grooves, the guide grooves of the second guides 302 are clamped with the projection of the first guide 301, the movement precision is high, the objective lens 305 is ensured to move in the vertical direction all the time, and the movement track of the objective lens is further ensured;
as shown in fig. 4-5, the objective lens mounting unit includes a vertical connecting member (i.e., a vertical connecting block 303) fixedly connected to the second guiding member 302 and a horizontal mounting block 304 horizontally disposed on the vertical connecting block 303, a first mounting hole concentric with the horizontal connecting port of the second lens barrel 203 is formed in the horizontal mounting block 304, a dust-proof sleeve 306 (connected with the objective lens through a screw) is sleeved on the objective lens 305, the objective lens 305 is disposed in the first mounting hole in a penetrating manner, the dust-proof sleeve 306 is fixedly connected to the horizontal mounting block 304 through a screw, and the top of the objective lens 305 is inserted into the second lens barrel 203 above the first mounting hole, so as to mount the objective lens.
As shown in fig. 5, in order to ensure structural stability of the objective lens mounting unit, a reinforcing rib plate 307 having a triangular structure is disposed between the horizontal mounting block 304 and the vertical connecting block 303.
As shown in fig. 2, the transmission mechanism includes a power source (the power source is a motor 401, and preferably a stepping motor 401) disposed on the vertical plate 104, a transmission assembly in transmission connection with the motor 401, and a lifting assembly in transmission connection with the transmission assembly, wherein the motor 401 is transmitted to the lifting assembly through the transmission assembly, so that the objective lens assembly is lifted and lowered.
As shown in fig. 3, 6-7, the transmission assembly includes a gear transmission pair driven by a motor 401, which includes a driving gear 402 mounted on the motor shaft and a driven gear 403 engaged with the driving gear 402; a mounting frame 404 is fixedly connected to the vertical plate 104 above the motor 401 through a positioning bolt, a wheel shaft of the driven gear 403 is rotatably arranged on the mounting frame 404 through a first bearing 405 and a second bearing 406 (both the first bearing 405 and the second bearing 406 are flange bearings), and the driven gear 403 is located in the mounting frame 404;
as shown in fig. 3, the lifting assembly includes a cam 407 (one end face of the cam 407 is attached to the driven gear 403, and both the cam 407 and the driven gear 403 are mounted on the axle through a flat key) sleeved on the axle, and a cam follower (i.e., a cam follower 408) disposed on the top of the vertical connecting block 303, where the cam 407 and the cam follower 408 are disposed up and down and the periphery of the cam 407 is tangent to the cam follower 408, so as to ensure that the cam 407 is always in contact with the cam follower 408 during the rotation process, so as to realize the stable lifting and lowering of the objective lens assembly.
As shown in fig. 6-7, in order to ensure the installation accuracy, a first positioning ring 409 is sleeved on the hub between the driven gear 403 and the first bearing 405, and a second positioning ring 410 is sleeved on the hub between the cam 407 and the second bearing 406, so as to prevent the cam 407 and the driven gear 403 from axial movement and affecting the accuracy.
When the lifting mechanism works, the motor 401 is started, the motor 401 works and drives the driven gear 403 and the cam 407 to rotate through the driving gear 402, and when the protruding end of the cam 407 rotates to the upper part, the cam 407 lifts up the cam follower 408 and the objective lens assembly to rise synchronously; the cam follower 408 and the objective lens assembly descend with the cam 407 as the convex end of the cam 407 gradually moves away from directly above, enabling adjustment of the height of the objective lens for automatic focusing. The utility model discloses utilize motor 401, gear drive pair and cam 407 to drive the objective lens subassembly and rise and descend, compact structure, occupation space is less and transmission precision is high.
As shown in fig. 3, in order to ensure the lifting stroke of the objective lens, a limiting assembly is arranged on the vertical plate 104 on one side of the first guide member 301, the limiting assembly includes a vertically arranged mounting block 501, a pair of limiting heads are horizontally extended from the upper end and the lower end of the mounting block 501, a limiting screw 502 is arranged on each limiting head, a limiting block 503 matched with the limiting head is arranged on the side edge of the vertical connecting block 303, and the upper surface and the lower surface of the limiting block 503 are matched with the limiting screw 502. A limit screw 502 which is arranged on the upper surface of the limit block 503 when the objective lens rises to the highest position; when the objective lens descends to the lowest position, the lower surface of the limiting block 503 abuts against the limiting screw 502 below, so that the elevating stroke of the objective lens is limited.
As shown in fig. 3, an upper mounting head 504 with a mounting hole is disposed on an outer surface of the limiting block 503, a lower mounting head 505 with a mounting hole is disposed on the limiting head at the lower end of the mounting block 501, and an elastic member 506 (which may be a spring support or an extension spring) is connected between the upper mounting head 504 and the lower mounting head 505, so as to effectively ensure that an outer periphery of the cam 407 is always tangent to the cam follower 408 during rotation of the cam 407, and further ensure the movement precision.
An objective focusing detection assembly is arranged on the vertical plate 104 on one side of the objective assembly and is used for detecting the ascending height and the descending height of the objective in real time so as to realize high-precision focusing. As shown in fig. 1, 5, and 8, the objective lens focusing detection assembly includes an installation component (i.e., a fixing plate 601 disposed on the other side of the vertical connection block 303 opposite to the limiting block 503) fixedly connected to one side of the vertical connection block 303, and an installation seat 602 positioned and installed on the vertical plate 104 by a positioning pin, a vertically extending installation groove is formed in the fixing plate 601, a grating ruler 603 is adhered in the installation groove (of course, the grating ruler 603 can be replaced by a magnetic grating ruler or a contact displacement sensor during actual installation), and the upper and lower ends of the grating ruler 603 are locked by a pressing plate and a screw, so as to prevent the grating ruler 603 from tilting and affecting the focusing accuracy; the mounting base 602 is of an L-shaped structure, and one side surface of the mounting base 602 is provided with positioning holes which are matched with the positioning pins one by one, so that the mounting base 602 is fixedly inserted on the positioning pins; the other side of the mounting base 602 is provided with a read-write head 604 for reading information of the grating ruler 603, and a protective plate 605 for protecting the read-write head 604 is fixed by screws at the edge of the mounting base 602 close to the read-write head 604.
As shown in fig. 3 and 10, a zero point sensor 701 is disposed on one side of the upper mounting plate 105, a signal plate 702 is correspondingly disposed at the edge of the horizontal mounting block 304, the signal plate 702 moves up and down along with the objective lens assembly, when the signal plate 702 moves up to a groove of the zero point sensor 701, the zero point sensor 701 detects a signal of the signal plate 702 and transmits the signal to the control system, the control system controls the motor 401 to stop rotating, and the objective lens is located at a zero point position; the other edge of the upper mounting plate 105 opposite to the zero sensor 701 is provided with a mounting rack 703 in an L-shaped structure downwards, the horizontal section of the mounting rack 703 is positioned right above the object stage 802, the center position of the horizontal section is provided with a slide in-place sensor 704 (the slide in-place sensor 704 is preferably a reflective sensor such as a photoelectric switch) for detecting slide in-place information, the slide in-place sensor 704 transmits a detected signal to a control system, the control system processes the signal and controls the pneumatic power of the motor 401, the height of the objective lens is adjusted, focusing is realized, and clear photographing is ensured.
As shown in fig. 9, a carrying assembly is disposed below the objective assembly, the carrying assembly includes a carrying frame 801 having one side fixedly connected to the vertical plate 104, a mounting side frame of the carrying frame 801 is a broken line structure, and an inclined portion at an upper portion is an avoiding transmission assembly, so as to ensure a mounting space of the transmission assembly; the vertical part at the lower part of the mounting side frame is positioned and inserted into the positioning bolt on the vertical plate, so that the fixed mounting of the carrying frame 801 is realized; as shown in fig. 1, 10 and 11, a stage 802 for clamping a slide is arranged on the top of a carrier frame 801, and the carrier frame 801 is provided with a through hole which is coaxial with the objective lens 305; the light source subassembly includes the bottom mounting panel 901 that links firmly at year thing frame 801 top and the vertical light source 902 that sets up on bottom mounting panel 901, and light source 902 sets up in the through-hole and the light source portion at its top upwards extends to the upper portion of carrying thing frame 801, provides the light source for the slide on the objective table 802, ensures clear shooting.
The working process and principle of the utility model are briefly described as follows:
when the slide in-place sensor 704 detects slide in-place information on the object stage 802, the slide in-place sensor 704 transmits a detected slide in-place signal to the control system, the control system receives the slide in-place signal and then sends an action instruction to the motor 401, the motor 401 drives the highest point of the objective lens to descend to the HOME position through the gear transmission pair and the cam 407, the read-write head 604 reads information on the grating ruler 603 in the descending process, and when the information of the grating ruler 603 read by the read-write head 604 is consistent with the corresponding height of the HOME position, the objective lens descends to the position; then the motor 401 drives the objective lens assembly to ascend through the gear transmission pair, the cam 407 and the cam follower 408, the objective lens starts to focus, the camera 201 takes pictures and transmits the pictures to the control system in the focusing process, the control system analyzes and judges the pictures to find the clearest picture so as to determine the clearest focusing surface, after the camera 201 takes the pictures under the focusing surface and records videos, the control system controls the motor 401 to ascend and reset the objective lens to a zero point, and the detected slide is taken down so as to be convenient for detecting other slides to be detected.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in fig. 1), and if the specific posture is changed, the directional indicator is changed accordingly. In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Claims (11)
1. An automatic focusing device for a microscope, comprising: comprises that
The fixing assembly is provided with a vertical supporting unit and an upper mounting unit, and the upper mounting unit is horizontally arranged at the upper part of the vertical supporting unit;
a camera shooting component arranged on the upper mounting unit;
the objective lens assembly is arranged on the vertical supporting unit below the camera shooting assembly, and the top of an objective lens of the objective lens assembly is connected with the camera shooting assembly;
the transmission mechanism is in transmission connection with the objective lens assembly so as to drive the objective lens assembly to ascend and descend and adjust the focal distance between the objective lens and the slide to be detected;
the objective lens focusing detection assembly is arranged on the vertical supporting unit and used for detecting the lifting height of the objective lens;
the carrying assembly is fixed on the vertical supporting unit and is positioned below the objective lens assembly; and
and the light source assembly is arranged in the mounting cavity of the object carrying assembly.
2. The microscope auto-focus device according to claim 1, wherein: the camera shooting assembly comprises a horizontally arranged camera, a horizontally arranged first lens barrel and a second lens barrel fixedly connected to the upper mounting unit, the second lens barrel is a 90-degree switching lens barrel, a vertical connecting port of the second lens barrel is fixedly connected with the first lens barrel, and a horizontal connecting port of the second lens barrel is connected with the objective lens.
3. The microscope auto-focus device according to claim 1, wherein: the objective lens assembly comprises a guide unit, an objective lens mounting unit fixedly connected to the guide unit and an objective lens arranged on the objective lens mounting unit.
4. A microscope autofocus device according to claim 3, wherein: the objective lens mounting unit comprises a vertical connecting piece fixedly connected to the guide unit and a horizontal mounting piece horizontally arranged on the vertical connecting piece, a first mounting hole is formed in the horizontal mounting piece, and the objective lens is arranged in the first mounting hole in a penetrating mode and coaxially arranged with the horizontal connecting hole.
5. The microscope auto-focus device according to claim 4, wherein: the objective lens focusing detection assembly comprises an installation piece fixedly connected to one side of the vertical connecting piece and a mounting seat fixedly connected to the vertical supporting unit, and a grating ruler, a magnetic grating ruler or a contact type displacement sensor is arranged on the installation piece.
6. The microscope auto-focus device according to claim 4, wherein: the vertical supporting unit is provided with a limiting assembly, the limiting assembly comprises an installation block, a pair of limiting heads are horizontally extended from the upper end and the lower end of the installation block, and limiting parts used for limiting the stroke of the vertical connecting piece are symmetrically arranged on the limiting heads.
7. A microscope autofocus device according to claim 3, wherein: a zero sensor is arranged at the edge of the upper mounting unit, and a signal plate matched with the zero sensor is arranged on the objective lens mounting unit; the upper mounting unit is provided with a slide in-place sensor for slide in-place information.
8. The microscope auto-focus device according to claim 1, wherein: the transmission mechanism comprises a power source arranged on the vertical supporting unit, a transmission assembly in transmission connection with the power source, and a lifting assembly in transmission connection with the transmission assembly, and the power source transmits power to the lifting assembly through the transmission assembly to enable the objective lens assembly to ascend and descend.
9. The microscope auto-focus device of claim 8, wherein: the lifting assembly comprises a cam fixedly connected to the transmission assembly and a cam follower arranged at the bottom of the objective lens assembly, the outer ring of the cam is tangent to the cam follower, and the cam follower takes the objective lens assembly to ascend and descend in the rotation process of the cam.
10. The microscope auto-focus device of claim 9, wherein: the transmission assembly comprises a gear transmission pair driven by the power source, a wheel shaft of the gear transmission pair is rotatably arranged on the vertical supporting unit, and the cam is sleeved on the wheel shaft.
11. The microscope auto-focus device according to claim 1, wherein: the object carrying assembly comprises an object carrying frame, one side of the object carrying frame is fixedly connected to the vertical supporting unit, an object carrying table used for placing a slide is arranged at the top of the object carrying frame, the light source assembly is arranged in the object carrying frame, and the light source center of the light source and the objective lens are coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123249335.1U CN216485769U (en) | 2021-12-22 | 2021-12-22 | Automatic focusing device for microscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123249335.1U CN216485769U (en) | 2021-12-22 | 2021-12-22 | Automatic focusing device for microscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216485769U true CN216485769U (en) | 2022-05-10 |
Family
ID=81426884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123249335.1U Active CN216485769U (en) | 2021-12-22 | 2021-12-22 | Automatic focusing device for microscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216485769U (en) |
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2021
- 2021-12-22 CN CN202123249335.1U patent/CN216485769U/en active Active
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