CN113576400B - Slit lamp microscope and diaphragm adjusting device thereof - Google Patents
Slit lamp microscope and diaphragm adjusting device thereof Download PDFInfo
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- CN113576400B CN113576400B CN202110891237.3A CN202110891237A CN113576400B CN 113576400 B CN113576400 B CN 113576400B CN 202110891237 A CN202110891237 A CN 202110891237A CN 113576400 B CN113576400 B CN 113576400B
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- 230000003287 optical effect Effects 0.000 claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000020347 spindle assembly Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
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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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
-
- 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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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- 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 positioning reference mandrel can be fixedly arranged on the diaphragm base, the clamping table is arranged in the circumferential direction of the positioning reference mandrel, the clamping table can be tightly pressed at the top of the optical filter base, the supporting table is arranged in the circumferential direction of the adjusting shaft sleeve, the bottom of the diaphragm sheet base can be placed on the supporting table, and the diaphragm sheet base can move along with the adjusting shaft sleeve. According to the diaphragm adjusting device provided by the invention, the filter base is driven to move by utilizing the threaded connection between the positioning reference mandrel and the adjusting shaft sleeve through the movement of the adjusting shaft sleeve, so that a gasket between a blade and a diaphragm sheet in a slit lamp microscope can be canceled, and the diaphragm adjusting device can be continuously adjusted in a spiral manner, so that the adjusting precision can be remarkably improved; and moreover, the structure is simple, the reliability is high, and the operation is convenient.
Description
Technical Field
The invention relates to the field of microscope adjustment, in particular to a diaphragm adjusting device. The invention also relates to a slit-lamp microscope comprising the diaphragm adjusting device.
Background
Slit-lamp microscopy is an essential instrument for ophthalmic examinations.
In the prior art, a diaphragm adjusting mechanism of a slit lamp microscope generally adopts a mode of adding gaskets to a central shaft sleeve to adjust the distance between a diaphragm and a slit knife edge, and in order to facilitate subsequent adjustment of the rotation center deviation of a diaphragm sheet seat and an optical filter seat, a larger gap is generally reserved in the shaft sleeve in the radial direction.
The structure in the prior art has the following problems: 1) The spacers are overlapped and the spacing is adjusted only at equal intervals, continuous adjustment cannot be performed, and the equal-interval adjustment precision is low; 2) The radial clearance that leaves of axle sleeve adjusts the rotation center deviation of diaphragm piece seat and light filter seat, makes the adjustment degree of difficulty of follow-up increase, and the follow-up needs the rotation center deviation and the rotation deflection of adjustment part simultaneously, and influences each other during the adjustment, 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 at present.
Disclosure of Invention
The invention aims to provide a diaphragm adjusting device which is high in adjusting precision and reliability. Another object of the invention is to provide a slit lamp microscope comprising a diaphragm adjusting device as described above.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The diaphragm adjusting device is applied to a slit lamp microscope with a diaphragm base, a diaphragm sheet seat and an optical 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, the clamping table can be tightly pressed at the top of the optical filter base, a supporting table is arranged in the circumferential direction of the adjusting shaft sleeve, the bottom of the diaphragm sheet base can be placed on the supporting table, and the diaphragm sheet base can move along with the adjusting shaft sleeve.
Preferably, a mandrel assembly hole into which the positioning reference mandrel is inserted is formed in the filter base, and the filter base can rotate relative to the positioning reference mandrel; the diameter of the mandrel assembly hole is larger than the outer diameter of the positioning reference mandrel by a preset tolerance.
Preferably, a shaft sleeve assembly hole for inserting the adjusting shaft sleeve is formed in the diaphragm sheet seat, and the diaphragm sheet seat can rotate relative to the adjusting shaft sleeve; the diameter of the shaft sleeve assembly hole is larger than the outer diameter of the adjusting shaft sleeve by a preset tolerance.
Preferably, a screw and a step surface are arranged at the bottom of the positioning reference mandrel, a step hole is formed in the diaphragm base, 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 pressed on the step surface of the diaphragm base so that the positioning reference mandrel is fastened with the diaphragm base.
Preferably, the top of the positioning reference mandrel is provided with external threads, the middle part of the adjusting shaft sleeve is provided with internal threads, and the adjusting shaft sleeve can be lifted along the external threads of the positioning reference mandrel.
Preferably, the saddle is located at the periphery of the bottom of the adjusting shaft sleeve, and the saddle 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 optical filter further comprises a corner positioning steel ball arranged on the diaphragm sheet seat and the optical filter seat.
Preferably, the device further comprises a fastening screw used for locking the positioning reference mandrel and the adjusting shaft sleeve, and a threaded hole into which the fastening screw is screwed 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 supporting table is larger than the thickness of the diaphragm sheet seat by a preset tolerance.
The 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, which comprises 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 sheet seat and an optical 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, the clamping table can be tightly pressed at the top of the optical filter base, a supporting table is arranged in the circumferential direction of the adjusting shaft sleeve, the bottom of the diaphragm sheet base can be placed on the supporting table, and the diaphragm sheet base can move along with the adjusting shaft sleeve. According to the diaphragm adjusting device provided by the invention, the filter base is driven to move by utilizing the threaded connection between the positioning reference mandrel and the adjusting shaft sleeve through the movement of the adjusting shaft sleeve, so that a gasket between a blade and a diaphragm sheet in a slit lamp microscope can be canceled, continuous adjustment is realized in a spiral manner, and the adjustment precision can be remarkably improved; and moreover, the structure is simple, the reliability is high, and the operation is convenient.
In a preferred embodiment, a mandrel assembly hole into which the positioning reference mandrel is inserted is formed in the optical filter base, and the optical filter base can rotate relative to the positioning reference mandrel; the diameter of the mandrel assembly 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 to the rotation center direct constraint location of light filter seat, cooperation the effect of block can be right the axial and the radial of light filter seat are all realized spacingly, 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 that the slit lamp microscope provided with the diaphragm adjusting device also has the corresponding technical effects.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of an embodiment of a diaphragm adjusting device according to the present invention;
FIG. 2 is a schematic diagram of a slit-lamp microscope according to the present invention;
wherein: a knife edge-1; diaphragm sheet-2; a fastening screw-3; an adjusting shaft sleeve-4; positioning a reference mandrel-5; a diaphragm base-6; a slit base-7; a diaphragm seat-8; corner positioning steel balls-9; filter base-10.
Detailed Description
The invention is characterized in that the diaphragm adjusting device is provided, and the diaphragm adjusting device is high in adjusting precision and reliability. Another core of the invention is to provide a slit-lamp microscope comprising the above diaphragm adjusting device.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of a diaphragm adjusting device provided by the present invention; fig. 2 is a schematic diagram of a slit-lamp microscope according to the present invention.
In this embodiment, the diaphragm adjusting device is applied to a slit lamp microscope with a diaphragm base 6, a diaphragm sheet seat 8 and a filter sheet seat 10, and the slit lamp microscope further comprises a blade, a diaphragm sheet 2 and a slit base 7, and in the use process of the device, both the knife edge 1 and the diaphragm sheet 2 need to be focused and imaged on a working object plane, and the closer the spacing distance between the knife edge 1 and the diaphragm sheet 2 is required, the better the sharpness of an imaging edge is, so that the quality of manufacturing precision is generally evaluated in the index industry.
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 diaphragm adjusting device is adjusted in a rotating mode. Specifically, the positioning reference mandrel 5 can be fixedly arranged on the diaphragm base 6, a clamping table is arranged in the circumferential direction of the positioning reference mandrel 5, the clamping table can be tightly pressed at the top of the optical filter base 10, the axial limiting of the optical filter base 10 is realized, a supporting table is arranged in the circumferential direction of the adjusting shaft sleeve 4, the bottom of the diaphragm sheet base 8 can be placed on the supporting table, and the diaphragm sheet base 8 can move along with the adjusting shaft sleeve 4.
Further, the diaphragm sheet holder 8 and the filter holder 10 are rotatable, the positioning reference spindle 5 is installed at the position of the rotation center of the filter holder 10, and the adjusting sleeve 4 is installed at the position of the rotation center of the diaphragm sheet holder 8.
According to the diaphragm adjusting device provided by the invention, the filter base 10 is driven to move by utilizing the threaded connection between the positioning reference mandrel 5 and the adjusting shaft sleeve 4 through the movement of the adjusting shaft sleeve 4, so that a gasket between a blade and the diaphragm sheet 2 in a slit lamp microscope can be canceled, and the diaphragm adjusting device can be continuously adjusted in a spiral manner, so that the adjusting precision can be remarkably improved; and moreover, the structure is simple, the reliability is high, and the operation is convenient.
On the basis of the above embodiments, the filter base 10 is provided with a mandrel assembly hole into which the positioning reference mandrel 5 is inserted, and the filter base 10 can rotate relative to the positioning reference mandrel 5; the diameter of the spindle assembly hole is larger than the outer diameter of the positioning reference spindle 5 by a preset tolerance. Above-mentioned setting, location benchmark dabber 5 realizes the direct restraint location to the rotation center of light filter seat 10 through the cooperation with dabber pilot hole, and the effect of cooperation block can be to the axial of light filter seat 10 and radial all realize spacing, need not to adjust once more, and the operation is more convenient.
On the basis of the above embodiments, the filter base 10 is provided with a mandrel assembly hole into which the positioning reference mandrel 5 is inserted, and the filter base 10 can rotate relative to the positioning reference mandrel 5; the diameter of the spindle assembly hole is larger than the outer diameter of the positioning reference spindle 5 by a preset tolerance. The mandrel assembly hole is positioned at the rotation center of the optical filter base 10, and the diameter of the mandrel assembly hole is slightly larger than the outer diameter of the positioning reference mandrel 5 so as to limit the rotation center of the optical filter base 10.
On the basis of the above embodiments, the diaphragm seat 8 is provided with a shaft sleeve assembly hole into which the adjusting shaft sleeve 4 is inserted, and the diaphragm seat 8 can rotate relative to the adjusting shaft sleeve 4; the diameter of the sleeve assembly hole is larger than the outer diameter of the adjusting sleeve 4 by a preset tolerance. The shaft sleeve assembly hole is positioned at the rotation center of the diaphragm sheet 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 as to limit the rotation center of the diaphragm sheet seat 8.
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, the inner wall of the hole with smaller diameter of the step hole of the diaphragm base 6 is provided with threads, and the step surface of the positioning reference mandrel 5 can be tightly pressed on the step surface of the diaphragm base 6 in cooperation with the threads on the screw of the positioning reference mandrel 5, 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 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 external threads, the middle of the adjusting shaft sleeve 4 is provided with internal threads, and the adjusting shaft sleeve 4 can be lifted along the external threads of the positioning reference mandrel 5. Namely, the adjusting shaft sleeve 4 is sleeved outside the positioning reference mandrel 5, and the adjusting shaft sleeve and the positioning reference mandrel are connected through threads.
On the basis of the above embodiments, the supporting stand is positioned at the periphery of the bottom of the adjusting shaft sleeve 4 and 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; 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 optical filter base 10 at the position close to the mandrel assembly hole by a preset tolerance, that is, the lower surface of the clamping table and the surface of the diaphragm base 6 can play an axial limiting role on the optical filter base 10, and meanwhile, the rotation of the optical filter base 10 is not affected.
The optical filter is characterized by further comprising a corner positioning steel ball 9 arranged on the diaphragm sheet seat 8 and the optical filter seat 10 on the basis of the above embodiments.
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, wherein a threaded hole into which the fastening screw 3 is screwed 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, and the fastening screw 3 can lock the position of the adjusting shaft sleeve 4, namely, the position of the diaphragm sheet seat 8, and then the position of the diaphragm sheet 2.
On the basis of 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 supporting table is larger than the thickness of the diaphragm sheet seat 8 at the position close to the shaft sleeve assembly hole by a preset tolerance, namely, the bottom surface of the screw head of the fastening screw 3 and the upper surface of the supporting table can play an axial limiting role on the diaphragm sheet seat 8, and meanwhile, the rotation of the diaphragm sheet seat 8 is not influenced.
Preferably, the preset tolerance is 0.02mm-0.03mm, and the stop can be realized without influencing the rotation of the diaphragm seat 8 and the optical filter seat 10.
In a specific embodiment, the optical filter base 10 is firstly arranged at the upper end of the diaphragm base 6, then the positioning reference mandrel 5 passes through the mandrel assembly hole of the optical filter base 10 and is arranged on the diaphragm base 6 with the center positioning step hole, and meanwhile, the optical filter base 10 is axially limited and the rotation center of the optical filter base 10 is restrained and positioned; the adjusting shaft sleeve 4 is rotatably arranged on the positioning reference mandrel 5, then the bonding assembly of the diaphragm sheet seat 8 and the diaphragm sheet 2 is arranged on the supporting 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 sheet seat 8 and the diaphragm sheet 2 so as to realize the continuous adjustment of the interval distance between the knife edge 1 and the diaphragm sheet 2, and after the adjustment, the diaphragm sheet seat 8 and the diaphragm sheet 2 are fastened by the fastening screw 3; after the distance between the knife edge 1 and the diaphragm 2 is adjusted, the centers of the diaphragm seat 8 and the optical filter seat 10 are restrained and positioned, and the subsequent joint adjustment only needs to adjust the rotation deflection angle of the diaphragm seat 8 and the optical filter seat 10 and position by using the corner positioning steel ball 9, so that the adjustment difficulty is greatly reduced.
According to the diaphragm adjusting device, the gap between the knife edge 1 and the diaphragm sheet 2 is eliminated, the gaskets are not required to be increased or decreased repeatedly, other structural parts are not required to be assembled and taken, and the assembly and adjustment 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 the fixed diaphragm sheet seat 8 and the optical filter seat 10, after the connection, the rotation centers of the diaphragm sheet seat 8 and the optical filter seat 10 are directly restrained and positioned, the rotation centers of the two parts are not required to be regulated, the subsequent joint regulation only needs to regulate the rotation deflection angle of the diaphragm sheet seat 8 and the optical filter seat 10 in a contraposition way, namely, the fine regulation is changed from 4 variables in the prior art to 2 variables, and the joint regulation difficulty is greatly reduced; simple structure and high reliability.
In addition to the diaphragm adjusting device, the invention also provides a slit lamp microscope comprising the diaphragm adjusting device, and other parts of the slit lamp microscope refer to the prior art, and the description is omitted herein.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The diaphragm adjusting device provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (10)
1. The diaphragm adjusting device is applied to a slit lamp microscope with a diaphragm base (6), a diaphragm sheet seat (8) and a light filter seat (10), and further comprises a blade, a diaphragm sheet (2) and a slit base (7), 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); the positioning reference mandrel (5) can be fixedly arranged on the diaphragm base (6), a clamping table is arranged in the circumferential direction of the positioning reference mandrel (5), the clamping table can be pressed on the top of the optical filter base (10), a supporting table is arranged in the circumferential direction of the adjusting shaft sleeve (4), the bottom of the diaphragm sheet base (8) can be placed on the supporting table, and the diaphragm sheet base (8) can move along with the adjusting shaft sleeve (4);
The optical filter base (10) is arranged at the upper end of the diaphragm base (6), and the positioning reference mandrel (5) is arranged on the diaphragm base (6) with the central positioning step hole through the mandrel assembly hole of the optical filter base (10) and is used for limiting the optical filter base (10) axially and limiting and positioning the rotation center of the optical filter base (10); the adjusting shaft sleeve (4) is rotationally arranged on the positioning reference mandrel (4), the bonding assembly of the diaphragm sheet seat (8) and the diaphragm sheet (2) is arranged on the supporting table of the adjusting shaft sleeve (4), the adjusting shaft sleeve (4) is rotated to adjust the axial lifting of the diaphragm sheet seat (8) and the diaphragm sheet (2), the continuous adjustment of the interval distance between the knife edge (1) and the diaphragm sheet (2) is realized, and the upper end and the lower end of the positioning reference mandrel (5) are respectively connected and fixed with the diaphragm sheet seat (8) and the optical filter seat (10);
The optical filter comprises a diaphragm sheet seat (8) and an optical filter seat (10), wherein the diaphragm sheet seat (8) and the optical filter seat (10) are rotatable, a positioning reference mandrel (5) is arranged at the position of the rotation center of the optical filter seat (10), an adjusting shaft sleeve (4) is arranged at the position of the rotation center of the diaphragm sheet seat (8), and the optical filter seat (10) is driven to move by adjusting the movement of the shaft sleeve (4) through threaded connection between the positioning reference mandrel (5) and the adjusting shaft sleeve (4).
2. The diaphragm adjusting device according to claim 1, wherein a spindle assembly hole into which the positioning reference spindle (5) is inserted is provided in the filter holder (10), 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.
3. The diaphragm adjusting device according to claim 2, wherein a sleeve assembly hole into which the adjusting sleeve (4) is inserted is provided in the diaphragm sheet holder (8), and the diaphragm sheet holder (8) is rotatable relative to the adjusting 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.
4. The diaphragm adjusting device according to claim 1, wherein a screw and a step surface are arranged at the bottom of the positioning reference mandrel (5), a step hole is arranged on the diaphragm base (6), a threaded hole into which the screw is screwed is arranged inside the step hole of the diaphragm base (6), and the step surface of the positioning reference mandrel (5) can be pressed against the step surface of the diaphragm base (6) so that the positioning reference mandrel (5) is fastened with the diaphragm base (6).
5. The diaphragm adjusting device according to claim 1, wherein the top of the positioning reference mandrel (5) is provided with external threads, the middle part of the adjusting shaft sleeve (4) is provided with internal threads, and the adjusting shaft sleeve (4) can be lifted along the external threads of the positioning reference mandrel (5).
6. The diaphragm adjusting device according to claim 5, characterized in that the saddle is located at the bottom periphery of the adjusting sleeve (4), the saddle being ring-shaped; 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.
7. The diaphragm adjustment device according to claim 1, further comprising corner positioning steel balls (9) mounted on the diaphragm mount (8) and the filter mount (10).
8. The diaphragm adjusting device according to any one of claims 1 to 7, further comprising a fastening screw (3) for locking the positioning reference spindle (5) with the adjusting sleeve (4), wherein a threaded hole into which the fastening screw (3) is screwed is provided in the middle of the upper end of the positioning reference spindle (5); the screw head of the fastening screw (3) can press the top of the adjusting shaft sleeve (4).
9. The diaphragm adjusting device according to claim 8, characterized in that the distance between the screw head bottom surface of the fastening screw (3) and the abutment is greater than the thickness of the diaphragm seat (8) by a predetermined tolerance.
10. A slit lamp microscope comprising a diaphragm adjustment device, characterized in that the diaphragm adjustment device is a diaphragm adjustment device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| 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 |
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| CN202110891237.3A CN113576400B (en) | 2021-08-04 | 2021-08-04 | Slit lamp microscope and diaphragm adjusting device thereof |
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| CN113576400A CN113576400A (en) | 2021-11-02 |
| CN113576400B true CN113576400B (en) | 2024-05-28 |
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| CN113576400A (en) | 2021-11-02 |
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