CN113576400A - Slit-lamp microscope and diaphragm adjusting device thereof - Google Patents
Slit-lamp microscope and diaphragm adjusting device thereof Download PDFInfo
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- CN113576400A CN113576400A CN202110891237.3A CN202110891237A CN113576400A CN 113576400 A CN113576400 A CN 113576400A CN 202110891237 A CN202110891237 A CN 202110891237A CN 113576400 A CN113576400 A CN 113576400A
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- 230000003287 optical effect Effects 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000020347 spindle assembly Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/13—Ophthalmic microscopes
- A61B3/135—Slit-lamp microscopes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0075—Apparatus for testing the eyes; Instruments for examining the eyes provided with adjusting devices, e.g. operated by control lever
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/006—Filter holders
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- Ophthalmology & Optometry (AREA)
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microscoopes, Condenser (AREA)
Abstract
The invention discloses a slit lamp microscope and a diaphragm adjusting device thereof, wherein the diaphragm adjusting device comprises a positioning reference mandrel and an adjusting shaft sleeve in threaded connection with the positioning reference mandrel, and the adjusting shaft sleeve can move along the axial direction of the positioning reference mandrel; the location benchmark dabber can set firmly on the diaphragm base, and the circumference of location benchmark dabber is equipped with the ka tai, and the ka tai can compress tightly at the top of filter seat, and the circumference of adjusting the axle sleeve is equipped with the saddle, and the bottom of diaphragm seat can be placed on the saddle, and the diaphragm seat can follow and adjust the axle sleeve and remove. According to the diaphragm adjusting device provided by the invention, the threaded connection between the positioning reference mandrel and the adjusting shaft sleeve is utilized, the adjusting shaft sleeve moves to drive the optical filter seat to move, a gasket between the blade and the diaphragm in the slit lamp microscope can be eliminated, the diaphragm adjusting device is continuously adjusted in a spiral mode, and the adjusting precision can be obviously improved; and, simple structure, the reliability is high, convenient operation.
Description
Technical Field
The invention relates to the field of microscope adjustment, in particular to a diaphragm adjusting device. The invention further relates to a slit-lamp microscope comprising the diaphragm adjusting device.
Background
Slit-lamp microscopes are vital instruments essential for ophthalmic examinations.
In the prior art, a diaphragm adjusting mechanism of a slit lamp microscope generally adopts a central shaft sleeve and gasket superposition mode to adjust the distance between a diaphragm and a slit knife edge, and a larger gap is generally reserved in the radial direction of a shaft sleeve in order to conveniently adjust the rotation center deviation of a diaphragm seat and an optical filter seat in the subsequent process.
The structure in the prior art has the following problems: 1) the distance is adjusted by stacking the gaskets, the gaskets can only be adjusted at equal intervals, continuous adjustment cannot be realized, and the accuracy of equal-distance adjustment is not high; 2) the axle sleeve radially leaves great clearance and adjusts the rotation center deviation of diaphragm seat and filter seat, makes the timing degree of difficulty increase of epilogue, and epilogue needs the rotation center deviation and the rotation declination of timing part simultaneously, and influences each other during timing, and is consuming time hard.
Therefore, how to improve the adjustment accuracy of the diaphragm adjusting device is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a diaphragm adjusting device which is high in adjustment precision and reliability. Another object of the present invention is to provide a slit-lamp microscope including the above diaphragm adjustment apparatus.
In order to achieve the purpose, the invention provides the following technical scheme:
a diaphragm adjusting device is applied to a slit lamp microscope with a diaphragm base, a diaphragm seat and a filter seat and comprises a positioning reference mandrel and an adjusting shaft sleeve in threaded connection with the positioning reference mandrel, wherein the adjusting shaft sleeve can move along the axial direction of the positioning reference mandrel; the positioning reference mandrel can be fixedly arranged on the diaphragm base, a clamping table is arranged in the circumferential direction of the positioning reference mandrel and can be pressed at the top of the optical filter seat, a supporting table is arranged in the circumferential direction of the adjusting shaft sleeve, the bottom of the diaphragm seat can be placed on the supporting table, and the diaphragm seat can follow the adjusting shaft sleeve to move.
Preferably, the optical filter base is provided with a spindle assembly hole for inserting the positioning reference spindle, and the optical filter base can rotate relative to the positioning reference spindle; the diameter of the mandrel assembling hole is larger than the outer diameter of the positioning reference mandrel by a preset tolerance.
Preferably, the diaphragm seat is provided with a shaft sleeve assembling hole for inserting the adjusting shaft sleeve, and the diaphragm seat can rotate relative to the adjusting shaft sleeve; the diameter of the shaft sleeve assembling hole is larger than the outer diameter of the adjusting shaft sleeve by a preset tolerance.
Preferably, the bottom of the positioning reference mandrel is provided with a screw and a step surface, the diaphragm base is provided with a step hole, a threaded hole into which the screw is screwed is formed in the step hole of the diaphragm base, and the step surface of the positioning reference mandrel can be tightly pressed on the step surface of the diaphragm base, so that the positioning reference mandrel and the diaphragm base are fastened.
Preferably, the top of location benchmark dabber is equipped with the external screw thread, the middle part of adjusting the axle sleeve is equipped with the internal thread, it can follow to adjust the axle sleeve the external screw thread of location benchmark dabber goes up and down.
Preferably, the support table is positioned on the periphery of the bottom of the adjusting shaft sleeve, and the support table is annular; the clamping table is annular, and the distance between the clamping table and the surface of the diaphragm base is larger than the thickness of the optical filter base by a preset tolerance.
Preferably, the device further comprises corner positioning steel balls arranged on the diaphragm seat and the filter seat.
Preferably, the positioning device further comprises a fastening screw for locking the positioning reference mandrel and the adjusting shaft sleeve, and a threaded hole for screwing in the fastening screw is formed in the middle of the upper end of the positioning reference mandrel; the screw head of the fastening screw can press the top of the adjusting shaft sleeve.
Preferably, the distance between the bottom surface of the screw head of the fastening screw and the saddle is larger than the thickness of the diaphragm seat by a preset tolerance.
A slit-lamp microscope comprises a diaphragm adjusting device, wherein the diaphragm adjusting device is the diaphragm adjusting device.
The invention also provides a slit-lamp microscope comprising the diaphragm adjusting device.
The diaphragm adjusting device provided by the invention is applied to a slit lamp microscope with a diaphragm base, a diaphragm seat and a filter seat, and comprises a positioning reference mandrel and an adjusting shaft sleeve in threaded connection with the positioning reference mandrel, wherein the adjusting shaft sleeve can move along the axial direction of the positioning reference mandrel; the positioning reference mandrel can be fixedly arranged on the diaphragm base, a clamping table is arranged in the circumferential direction of the positioning reference mandrel and can be pressed at the top of the optical filter seat, a supporting table is arranged in the circumferential direction of the adjusting shaft sleeve, the bottom of the diaphragm seat can be placed on the supporting table, and the diaphragm seat can follow the adjusting shaft sleeve to move. According to the diaphragm adjusting device provided by the invention, the threaded connection between the positioning reference mandrel and the adjusting shaft sleeve is utilized, the adjusting shaft sleeve moves to drive the optical filter seat to move, a gasket between a blade and a diaphragm in a slit lamp microscope can be eliminated, the diaphragm adjusting device is continuously adjusted in a spiral mode, and the adjusting precision can be obviously improved; and, simple structure, the reliability is high, convenient operation.
In a preferred embodiment, the optical filter holder is provided with a spindle assembly hole for inserting the positioning reference spindle, and the optical filter holder can rotate relative to the positioning reference spindle; the diameter of the mandrel assembling hole is larger than the outer diameter of the positioning reference mandrel by a preset tolerance. Above-mentioned setting, the location benchmark dabber through with the cooperation of dabber pilot hole realizes right the direct restraint location of the rotation center of optical filter seat, the cooperation the effect of ka tai can be right the axial of optical filter seat all realizes spacingly with radially, need not to adjust once more, and the operation is more convenient.
The slit-lamp microscope provided by the invention is provided with the diaphragm adjusting device, and the diaphragm adjusting device has the technical effects, so the slit-lamp microscope provided with the diaphragm adjusting device also has corresponding technical effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of a diaphragm adjusting apparatus provided in the present invention;
FIG. 2 is a schematic diagram of a slit-lamp microscope according to the present invention;
wherein: a knife edge-1; a diaphragm sheet-2; a fastening screw-3; an adjusting shaft sleeve-4; positioning a reference mandrel-5; a diaphragm base-6; a fracture base-7; a diaphragm seat-8; a corner positioning steel ball-9; a filter holder-10.
Detailed Description
The core of the invention is to provide a diaphragm adjusting device which has high adjustment precision and high reliability. Another core of the invention is to provide a slit-lamp microscope comprising the above diaphragm adjustment device.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of a diaphragm adjusting device provided in the present invention; fig. 2 is a schematic structural diagram of a slit-lamp microscope provided by the present invention.
In the embodiment, the diaphragm adjusting device is applied to a slit-lamp microscope with a diaphragm base 6, a diaphragm seat 8 and a filter seat 10, the slit-lamp microscope further comprises a blade, a diaphragm 2 and a slit base 7, in the use process of the device, the knife edge 1 and the diaphragm 2 are focused and imaged on the surface of a workpiece, the closer the distance between the knife edge 1 and the diaphragm 2 is, the sharper the imaging edge of the diaphragm, and the index is generally used in the industry as the evaluation of the manufacturing accuracy.
The diaphragm adjusting device comprises a positioning reference mandrel 5 and an adjusting shaft sleeve 4, the adjusting shaft sleeve 4 is in threaded connection with the positioning reference mandrel 5, the adjusting shaft sleeve 4 can move along the axial direction of the positioning reference mandrel 5, and the axial position of the adjusting shaft sleeve can be adjusted in a rotating mode. Specifically, location benchmark dabber 5 can set firmly on diaphragm base 6, and the circumference of location benchmark dabber 5 is equipped with the ka tai, and the ka tai can compress tightly at the top of filter seat 10, realizes that the axial of filter seat 10 is spacing, and the circumference of adjusting shaft sleeve 4 is equipped with the saddle, and the bottom of diaphragm seat 8 can be placed on the saddle, and diaphragm seat 8 can follow and adjust shaft sleeve 4 and remove.
Further, both the diaphragm seat 8 and the filter seat 10 can rotate, the positioning reference mandrel 5 is installed at the position of the rotation center of the filter seat 10, and the adjusting shaft sleeve 4 is installed at the position of the rotation center of the diaphragm seat 8.
According to the diaphragm adjusting device provided by the invention, the threaded connection between the positioning reference mandrel 5 and the adjusting shaft sleeve 4 is utilized, the adjusting shaft sleeve 4 moves to drive the optical filter seat 10 to move, a gasket between a blade and the diaphragm 2 in the slit lamp microscope can be eliminated, the diaphragm adjusting device is continuously adjusted in a spiral mode, and the adjusting precision can be obviously improved; and, simple structure, the reliability is high, convenient operation.
In addition to the above embodiments, the filter holder 10 is provided with a spindle attachment hole into which the positioning reference spindle 5 is inserted, and the filter holder 10 is rotatable with respect to the positioning reference spindle 5; the diameter of the mandrel assembly hole is larger than the outer diameter of the positioning reference mandrel 5 by a preset tolerance. Above-mentioned setting, location benchmark dabber 5 through with the cooperation of dabber pilot hole, realize the direct restraint location to the rotation center of optical filter seat 10, the effect of cooperation ka tai can all realize spacingly to the axial of optical filter seat 10 with radially, need not to adjust once more, the operation is more convenient.
In addition to the above embodiments, the filter holder 10 is provided with a spindle attachment hole into which the positioning reference spindle 5 is inserted, and the filter holder 10 is rotatable with respect to the positioning reference spindle 5; the diameter of the mandrel assembly hole is larger than the outer diameter of the positioning reference mandrel 5 by a preset tolerance. The mandrel assembly hole is located at the rotation center of the optical filter seat 10, and the diameter of the mandrel assembly hole is slightly larger than the outer diameter of the positioning reference mandrel 5, so that the rotation center of the optical filter seat 10 is limited.
On the basis of the above embodiments, the diaphragm seat 8 is provided with a shaft sleeve assembly hole for inserting the adjusting shaft sleeve 4, and the diaphragm seat 8 can rotate relative to the adjusting shaft sleeve 4; the diameter of the shaft sleeve assembly hole is larger than the outer diameter of the adjusting shaft sleeve 4 by a preset tolerance. The shaft sleeve assembly hole is located at the rotation center of the diaphragm seat 8, and the diameter of the shaft sleeve assembly hole is slightly larger than the outer diameter of the adjusting shaft sleeve 4, so that the rotation center of the diaphragm seat 8 is limited.
On the basis of the above embodiments, the bottom of the positioning reference mandrel 5 is provided with a screw and a step surface, the diaphragm base 6 is provided with a step hole, a threaded hole into which the screw is screwed is formed in the step hole of the diaphragm base 6, that is, a thread is formed on the inner wall of the hole with the smaller diameter of the step hole of the diaphragm base 6 and is matched with the thread on the screw of the positioning reference mandrel 5, and the step surface of the positioning reference mandrel 5 can be pressed on the step surface of the diaphragm base 6, so that the positioning reference mandrel 5 and the diaphragm base 6 are fastened. Of course, the connection between the positioning reference mandrel 5 and the diaphragm base 6 may be in other manners, such as a snap fit or an interference fit.
On the basis of the above embodiments, the top of the positioning reference mandrel 5 is provided with an external thread, the middle of the adjusting shaft sleeve 4 is provided with an internal thread, and the adjusting shaft sleeve 4 can lift along the external thread of the positioning reference mandrel 5. Namely, the adjusting shaft sleeve 4 is sleeved outside the positioning reference mandrel 5 and is in threaded connection with the positioning reference mandrel 5.
On the basis of the above embodiments, the saddle is located on the periphery of the bottom of the adjusting shaft sleeve 4, and the saddle is annular; the clamping table is annular, and the distance between the clamping table and the surface of the diaphragm base 6 is larger than the thickness of the optical filter seat 10 by a preset tolerance; specifically, the distance between the lower surface of the clamping table and the surface of the diaphragm base 6 is larger than the thickness of the position, close to the mandrel assembling hole, of the optical filter base 10 by a preset tolerance, namely the lower surface of the clamping table and the surface of the diaphragm base 6 can play a role in axial limiting on the optical filter base 10, and meanwhile, the rotation of the optical filter base 10 is not influenced.
In addition to the above embodiments, the optical disc apparatus further includes a corner positioning steel ball 9 mounted on the diaphragm holder 8 and the filter holder 10.
On the basis of the above embodiments, the device further comprises a fastening screw 3 for locking the positioning reference mandrel 5 and the adjusting shaft sleeve 4, and a threaded hole for screwing in the fastening screw 3 is formed in the middle of the upper end of the positioning reference mandrel 5; the head of the fastening screw 3 can press the top of the adjusting sleeve 4, and the fastening screw 3 can lock the position of the adjusting sleeve 4, i.e. the position of the diaphragm seat 8, and thus the position of the diaphragm 2.
In addition to the above embodiments, the distance between the bottom surface of the screw head of the fastening screw 3 and the mount is larger than the thickness of the diaphragm seat 8 by a predetermined tolerance. Specifically, the distance between the bottom surface of the screw head of the fastening screw 3 and the upper surface of the support table is larger than the thickness of the diaphragm seat 8 at the position close to the shaft sleeve assembling hole by a preset tolerance, that is, the bottom surface of the screw head of the fastening screw 3 and the upper surface of the support table can play an axial limiting role for the diaphragm seat 8, and the rotation of the diaphragm seat 8 is not influenced.
Preferably, the preset tolerance is 0.02mm-0.03mm, and the rotation of the diaphragm seat 8 and the filter seat 10 is not affected while the limit is realized.
In a specific embodiment, firstly, the optical filter base 10 is placed at the upper end of the diaphragm base 6, then the positioning reference mandrel 5 is installed on the diaphragm base 6 with a central positioning step hole through a mandrel assembling hole of the optical filter base 10, and meanwhile, the optical filter base 10 is axially limited, and the rotation center of the optical filter base 10 is restrained and positioned; then the adjusting shaft sleeve 4 is rotatably arranged on the positioning reference mandrel 5, then the bonding assembly of the diaphragm seat 8 and the diaphragm 2 is arranged on a support table of the adjusting shaft sleeve 4, at the moment, the adjusting shaft sleeve 4 can be rotated to adjust the axial lifting of the diaphragm seat 8 and the diaphragm 2 so as to realize the continuous adjustment and calibration of the spacing distance between the knife edge 1 and the diaphragm 2, and after the adjustment is finished, the fastening screw 3 is used for fastening; after the distance between the knife edge 1 and the diaphragm 2 is adjusted, as the centers of the diaphragm seat 8 and the optical filter seat 10 are restrained and positioned, the subsequent joint adjustment only needs to adjust the rotation deflection angles of the diaphragm seat 8 and the optical filter seat 10 and position the diaphragm seat with the corner positioning steel ball 9, and the adjustment difficulty is greatly reduced.
According to the diaphragm adjusting device, the distance between the knife edge 1 and the diaphragm 2 is eliminated without adding or removing gaskets and assembling and taking other structural parts repeatedly, so that the assembling and adjusting efficiency is greatly improved; the distance is continuously adjustable, and the control precision is high; the upper end and the lower end of the positioning reference mandrel 5 are respectively connected with a fixed diaphragm seat 8 and a filter seat 10, after connection, the rotation centers of the diaphragm seat 8 and the filter seat 10 are directly restrained and positioned, the rotation centers of two pieces do not need to be adjusted, subsequent joint adjustment only needs to align and adjust the rotation deflection angles of the diaphragm seat 8 and the filter seat 10, namely, fine adjustment is changed from 4 variables in the prior art to 2 variables, and the difficulty of joint adjustment is greatly reduced; simple structure, the reliability is high.
In addition to the above diaphragm adjusting device, the present invention further provides a slit-lamp microscope including the above diaphragm adjusting device, and other structures of the slit-lamp microscope refer to the prior art, which is not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The diaphragm adjusting device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A diaphragm adjusting device is applied to a slit lamp microscope with a diaphragm base (6), a diaphragm seat (8) and a filter seat (10), and is characterized by comprising a positioning reference mandrel (5) and an adjusting shaft sleeve (4) in threaded connection with the positioning reference mandrel (5), wherein the adjusting shaft sleeve (4) can move along the axial direction of the positioning reference mandrel (5); location benchmark dabber (5) can set firmly in on diaphragm base (6), the circumference of location benchmark dabber (5) is equipped with the ka tai, the ka tai can compress tightly the top of filter seat (10), the circumference of adjusting axle sleeve (4) is equipped with the saddle, the bottom of diaphragm seat (8) can be placed on the saddle, diaphragm seat (8) can follow adjust axle sleeve (4) and remove.
2. The diaphragm adjusting apparatus according to claim 1, wherein the filter holder (10) is provided with a spindle fitting hole into which the positioning reference spindle (5) is inserted, and the filter holder (10) is rotatable with respect to the positioning reference spindle (5); the diameter of the mandrel assembling hole is larger than the outer diameter of the positioning reference mandrel (5) by a preset tolerance.
3. The diaphragm adjusting apparatus according to claim 2, wherein the diaphragm seat (8) is provided with a sleeve mounting hole for inserting the adjusting sleeve (4), and the diaphragm seat (8) is rotatable relative to the adjusting sleeve (4); the diameter of the shaft sleeve assembling hole is larger than the outer diameter of the adjusting shaft sleeve (4) by a preset tolerance.
4. The diaphragm adjusting device according to claim 1, wherein the bottom of the positioning reference mandrel (5) is provided with a screw and a step surface, the diaphragm base (6) is provided with a step hole, the step hole of the diaphragm base (6) is internally provided with a threaded hole for the screw to be screwed in, and the step surface of the positioning reference mandrel (5) can be pressed on the step surface of the diaphragm base (6) to fasten the positioning reference mandrel (5) and the diaphragm base (6).
5. The diaphragm adjusting device according to claim 1, characterized in that the top of the positioning reference mandrel (5) is provided with an external thread, the middle of the adjusting sleeve (4) is provided with an internal thread, and the adjusting sleeve (4) can be lifted and lowered along the external thread of the positioning reference mandrel (5).
6. The diaphragm adjusting device according to claim 5, characterized in that the saddle is positioned at the bottom periphery of the adjusting shaft sleeve (4), and the saddle is annular; the clamping table is annular, and the distance between the clamping table and the surface of the diaphragm base (6) is larger than the thickness of the optical filter base (10) by a preset tolerance.
7. The diaphragm adjusting apparatus according to claim 1, further comprising corner positioning steel balls (9) mounted on the diaphragm base (8) and the filter base (10).
8. The diaphragm adjusting device according to any one of claims 1 to 7, characterized by further comprising a fastening screw (3) for locking the positioning reference mandrel (5) and the adjusting shaft sleeve (4), wherein a threaded hole for screwing the fastening screw (3) is formed in the middle of the upper end of the positioning reference mandrel (5); the screw head of the fastening screw (3) can press the top of the adjusting shaft sleeve (4).
9. The diaphragm adjusting apparatus according to claim 8, wherein a distance between a screw head bottom surface of the fastening screw (3) and the stage is larger than a thickness of the diaphragm seat (8) by a preset tolerance.
10. A slit-lamp microscope comprising a diaphragm adjustment device, characterized in that the diaphragm adjustment device is as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110891237.3A CN113576400B (en) | 2021-08-04 | 2021-08-04 | Slit lamp microscope and diaphragm adjusting device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110891237.3A CN113576400B (en) | 2021-08-04 | 2021-08-04 | Slit lamp microscope and diaphragm adjusting device thereof |
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| CN113576400A true CN113576400A (en) | 2021-11-02 |
| CN113576400B CN113576400B (en) | 2024-05-28 |
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| CN104007530A (en) * | 2014-04-30 | 2014-08-27 | 玉晶光电股份有限公司 | Spacing adjustable device |
| CN204496093U (en) * | 2015-01-27 | 2015-07-22 | 重庆远视科技有限公司 | The slit-lamp of a kind of beam condensing unit and a kind of slit-lamp microscope |
| CN206209173U (en) * | 2016-09-30 | 2017-05-31 | 广州长步道光电科技有限公司 | A kind of diaphragm governor motion |
| JP2018166927A (en) * | 2017-03-30 | 2018-11-01 | 株式会社トプコン | Ophthalmic microscope |
| JP2019020535A (en) * | 2017-07-14 | 2019-02-07 | キヤノン株式会社 | Focus operation device and lens system having focus operation device |
| CN212965494U (en) * | 2020-09-30 | 2021-04-13 | 深圳中科飞测科技股份有限公司 | Diaphragm, base and diaphragm assembly |
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