CN107884921B - Eyepiece auxiliary observation device of microscope for physical teaching - Google Patents
Eyepiece auxiliary observation device of microscope for physical teaching Download PDFInfo
- Publication number
- CN107884921B CN107884921B CN201711446170.2A CN201711446170A CN107884921B CN 107884921 B CN107884921 B CN 107884921B CN 201711446170 A CN201711446170 A CN 201711446170A CN 107884921 B CN107884921 B CN 107884921B
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- lens
- barrel
- sleeve
- connecting cylinder
- image sensor
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/36—Microscopes arranged for photographic purposes or projection purposes or digital imaging or video purposes including associated control and data processing arrangements
- G02B21/361—Optical details, e.g. image relay to the camera or image sensor
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/36—Microscopes arranged for photographic purposes or projection purposes or digital imaging or video purposes including associated control and data processing arrangements
- G02B21/362—Mechanical details, e.g. mountings for the camera or image sensor, housings
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/22—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for optics
Abstract
The utility model provides an auxiliary observation device of microscope's eyepiece for physical teaching, including hollow and upper and lower both ends open barrel, set up at the display of barrel upper end, set up image sensor in the barrel, set up in the barrel and just enough lens subassembly that realizes axial displacement, the display passes through the data line with image sensor to be connected, image sensor and lens subassembly are kept away from with the display in proper order from near to far away from, lens subassembly includes a plurality of lenses just and interval in proper order each other with image sensor. The device does not change the structure and the adjusting steps of the original instrument, can conveniently observe experimental phenomena, and is convenient for teaching use.
Description
Technical Field
The invention relates to an eyepiece auxiliary observation device of a microscope for physical teaching.
Background
Conventional microscopes, telescopes, and spectrometers require an eyepiece for viewing during use. In the teaching process, the conventional ocular lens has the following defects:
1. can only be observed by one eye, and the eyes are in a state of 'one eye is open and one eye is closed' for a long time, so that the eye is easy to fatigue and unsmooth;
2. the field of view scope is smaller, is difficult for observing experimental phenomenon.
3. The experimental phenomenon can only be observed by one person of the experimenter, and the teacher can check and comment when the teaching is inconvenient.
There is an electronic eyepiece on the market that uses a CCD sensor to receive an image and display the image through an electronic screen. Although the device is convenient for observing experimental phenomena, the teaching process has the following two defects:
1. when the electronic ocular is used, the ocular of the instrument needs to be taken down, so that the basic structure of the experimental instrument is changed. And the process of taking down and replacing can accelerate the loss of the ocular. In addition, for some instruments, such as spectrometers, the eyepiece cannot be removed separately.
2. When the electronic ocular is used, the focal length does not need to be manually adjusted, and the link of adjusting the ocular is lost. In teaching, the structure, principle and using method of the instrument are important contents of teaching, students do not know the structure, using purpose and method of the ocular lens, and the whole teaching activity is incomplete.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an eyepiece auxiliary observation device of a microscope for physical teaching, which does not change the structure and the adjusting steps of the original instrument and can conveniently observe experimental phenomena.
In order to solve the technical problems, the invention provides an eyepiece auxiliary observation device of a microscope for physical teaching, which comprises a hollow cylinder body with open upper and lower ends, a display arranged at the upper end of the cylinder body, an image sensor arranged in the cylinder body, and a lens component which is arranged in the cylinder body and is sufficient for realizing axial displacement, wherein the display is connected with the image sensor through a data line, the image sensor and the lens component are sequentially far away from the display from the near side, and the lens component comprises a plurality of lenses which are opposite to the image sensor and are sequentially spaced from each other.
For the sake of simplicity of explanation, the eyepiece-assisted observation device of the physical teaching microscope according to the present invention will be hereinafter simply referred to as the present device.
The use method of the device is that when the observation instrument is adjusted in the experiment, the device is sleeved on the ocular, and the lens position is adjusted through the definition degree of the image in the display, so that the image achieves the clearest effect.
The device has the advantages that firstly, eyes are liberated, and eyes do not need to stare at the ocular lens of the microscope for a long time; 2. the field of view scope is enlarged, and experimental phenomena are observed more intuitively. 3. And the experiment teaching is convenient. 4. The original experimental instrument is not changed, the experimental adjustment steps are not simplified, and the requirements of students on experiments are not reduced.
In order to achieve better use effect of the device, the preferable scheme is as follows:
preferably, the cylinder body comprises a mounting cylinder, a connecting cylinder and a sleeve which are connected up and down in sequence, and the cross sections of the mounting cylinder, the connecting cylinder and the sleeve are circular;
the upper end and the lower end of the mounting cylinder are both open, and the upper end of the mounting cylinder is provided with a first annular table extending circumferentially;
the upper end of the connecting cylinder is open, the lower end of the connecting cylinder is sealed in a circumferential adduction state, the central area of the lower end of the connecting cylinder is provided with internal threads for installing a lens assembly, and the outer wall of the lower end of the connecting cylinder is provided with external threads for connecting a sleeve;
the upper end and the lower end of the sleeve are both open, the upper end in the sleeve is provided with an internal thread which is matched with the external thread at the lower end of the connecting cylinder, at least three thread through holes are circumferentially and uniformly distributed at the lower part of the sleeve, the axes of the thread through holes are coplanar, the axis extension line of each thread through hole is vertically intersected with the axis of the sleeve, and a set screw is rotationally arranged in each thread through hole;
the mounting cylinder is inserted into the connecting cylinder from top to bottom, the first annular table is contacted with the connecting cylinder, a gap is reserved between the lower end of the mounting cylinder and the lower end seal of the connecting cylinder, and the lower end of the connecting cylinder is connected with the upper end of the sleeve in an internal and external screwing way;
the lens assembly further comprises a round lens barrel which is used for installing a plurality of lenses, and is provided with an opening at the upper end and the lower end, and the outer wall of the upper part of the lens barrel is provided with external threads which are matched with the internal threads of the connecting barrel;
the display is arranged above the first annular table, the image sensor and the data wire are arranged in the mounting cylinder, the lens barrel is rotatably arranged in the center area of the lower end of the connecting cylinder, and the specifications and dimensions of the lower end seal of the connecting cylinder, the lens barrel and the sleeve are enough to enable the lens barrel to be positioned in the sleeve.
The barrel is divided into three parts of a mounting barrel, a connecting barrel and a sleeve, and the three parts are detachably and movably connected, so that focusing and use can be facilitated, the first annular table plays a limiting role, and the lower side of the mounting barrel is ensured not to be contacted with the lower side of the connecting barrel.
Preferably, the image sensor is a CCD sensor or a CMOS sensor.
Preferably, the lower end of the lens barrel is provided with a second annular table extending in the circumferential direction;
the lens comprises a first lens, a second lens and a third lens which are sequentially arranged at intervals from top to bottom, wherein the first lens is a convex-concave lens with an upward notch, the second lens is a biconvex lens, and the third lens is a biconvex lens;
the curvature radius of the upper curved surface of the first lens is 7.568mm, and the curvature radius of the lower curved surface is 27.195mm;
the curvature radius of the upper curved surface of the second lens is 12.636mm, and the curvature radius of the lower curved surface is 7.568mm;
the curvature radius of the upper curved surface of the third lens is 26.502mm, and the curvature radius of the lower curved surface is 19.897mm;
the distance between the first lens and the second lens along the axes is 0.6mm;
the distance between the second lens and the third lens along the axes is 0.8mm;
along the axis of the first lens, the distance between the upper curved surface of the first lens and the image sensor is 5-8mm;
along the axis of the third lens, the distance between the lower curved surface of the third lens and the surface of the object to be observed is 2-4mm.
The second annular table plays a role of a holding part, and the lens assembly is convenient to move and focus.
Preferably, the mounting cylinder is internally and sequentially provided with an optical filter and an annular blocking ring below the image sensor, and the optical filter, the annular blocking ring and the annular blocking ring are sequentially contacted from top to bottom, and the lower sides of the blocking ring and the mounting cylinder are coplanar;
and a sealing ring is also arranged between the mounting cylinder and the connecting cylinder.
The optical filter can filter part of light to obtain a clearer image. The blocking ring can protect the image sensor and the optical filter, so that the image sensor and the optical filter are not easy to be damaged by external force impact, and the sealing ring can enable the mounting cylinder and the connecting cylinder to be directly assembled more tightly.
Drawings
Fig. 1 is a schematic diagram of the structure of the device.
Fig. 2 is a schematic structural view of the sleeve.
Fig. 3 is a schematic structural view of the first lens.
Fig. 4 is a schematic structural view of the second lens.
Fig. 5 is a schematic structural view of the third lens.
Detailed Description
Referring to fig. 1-5, the device comprises a hollow cylinder body with two open upper and lower ends, a display 1 arranged at the upper end of the cylinder body, a CCD sensor 23 arranged in the cylinder body, and a lens assembly 4 arranged in the cylinder body and used for realizing axial displacement, wherein the display 1 is connected with the CCD sensor 23 through a data line, the CCD sensor 23 and the lens assembly 4 are sequentially far away from the display 1 from the near side to the far side, and the lens assembly 4 comprises a plurality of lenses which are opposite to the CCD sensor 23 and are sequentially spaced from each other.
The cylinder body comprises a mounting cylinder 2, a connecting cylinder 3 and a sleeve 5 which are connected up and down in sequence, and the cross sections of the mounting cylinder 2, the connecting cylinder 3 and the sleeve 5 are circular;
the upper end and the lower end of the mounting cylinder 2 are both open, and the upper end is provided with a first annular table 22 extending circumferentially;
the upper end of the connecting cylinder 3 is open, the lower end is sealed in a circumferential adduction state, a step 31 is formed, the central area of the lower end of the connecting cylinder 3 is provided with an internal thread for installing the lens component 4, and the outer wall of the lower end of the connecting cylinder 3 is provided with an external thread for connecting the sleeve 5;
the upper end and the lower end of the sleeve 5 are both open, the upper end in the sleeve 5 is provided with an internal thread matched with the external thread at the lower end of the connecting cylinder 3, at least three thread through holes 51 are circumferentially and uniformly distributed at the lower part of the sleeve 5, the axes of the thread through holes 51 are coplanar, the axis extension line of each thread through hole 51 is vertically intersected with the axis of the sleeve 5, and a set screw 52 is rotationally arranged in each thread through hole 51;
the mounting cylinder 2 is inserted into the connecting cylinder 3 from top to bottom, the first annular table 22 is contacted with the connecting cylinder 3, a gap is reserved between the lower end of the mounting cylinder 2 and the lower end seal of the connecting cylinder 3, the lower end of the connecting cylinder 3 is screwed with the upper end of the sleeve 5, and the upper end of the sleeve 5 is propped against the step 31;
the lens assembly 4 further comprises a circular lens cone 41 for installing a plurality of lenses, and the upper end and the lower end of the lens cone 41 are both open, and the outer wall of the upper part of the lens cone 41 is provided with external threads which are matched with the internal threads of the connecting cylinder 3;
the display 1 is arranged above the first annular table 22, the CCD sensor 23 and the data wire are arranged in the mounting cylinder 2, the lens barrel 41 is rotatably arranged in the center area of the lower end of the connecting cylinder 3, and the specification and the size of the lower end seal of the connecting cylinder 3, the lens barrel 41 and the sleeve 5 are enough to enable the lens barrel 41 to be positioned in the sleeve 5.
The lower end of the lens barrel 41 is provided with a second annular table 45 extending circumferentially;
the lens comprises a first lens 42, a second lens 43 and a third lens 44 which are sequentially arranged at intervals from top to bottom, wherein the first lens 42 is a convex-concave lens with an upward notch, the second lens 43 is a biconvex lens, and the third lens 44 is a biconvex lens;
the curvature radius of the upper curved surface of the first lens 42 is 7.568mm, the curvature radius of the lower curved surface is 27.195mm, the thickness is 2.52mm, the height difference between the upper lowest point and the lower lowest point along the vertical direction is 1.38mm, the lower side surface is plated with an antireflection film, the wavelength is 550nm, and the implementation standard is GB1316-77;
the curvature radius of the upper curved surface of the second lens 43 is 12.636mm, the curvature radius of the lower curved surface is 7.568mm, the thickness is 2.48mm, the upper side surface is plated with an antireflection film, the wavelength is 550nm, and the implementation standard is GB1316-77;
the curvature radius of the upper curved surface of the third lens 44 is 26.502mm, the curvature radius of the lower curved surface is 19.897mm, the thickness is 2.19mm, the upper side surface and the lower side surface are both plated with an antireflection film, the wavelength is 550nm, and the implementation standard is GB1316-77;
the distance between the first lens 42 and the second lens 43 along the axes is 0.6mm;
the distance between the second lens 43 and the third lens 44 along the axes is 0.8mm;
along the axis of the first lens 42, the distance between the upper curved surface of the first lens 42 and the CCD sensor 23 is 8mm;
along the axis of the third lens 44, the distance between the lower curved surface of the third lens 44 and the surface of the object to be observed is 4mm.
The optical filter 24 and the annular blocking ring 21 are sequentially arranged below the CCD sensor 23 in the mounting cylinder 2, and sequentially contact from top to bottom, the blocking ring 21 and the lower side of the mounting cylinder 2 are coplanar, and the wavelength of the optical filter coating is 550nm;
a sealing ring (not shown in fig. 1) is also arranged between the mounting cylinder 2 and the connecting cylinder 3.
The use method of the device is that when the observation instrument is adjusted in the experiment, the device is sleeved on the ocular firstly, the barrel is arranged on the ocular of the microscope through the lower end of the barrel, the image of the surface of the object to be observed is focused by the lens, and the image is clearly shown by the display 1 after being imaged on the CCD sensor 23. The position of the lens assembly 4 is adjusted by the sharpness of the image in the display 1, so that the image achieves the sharpest effect.
The device has the advantages that firstly, eyes are liberated, and eyes do not need to stare at the ocular lens of the microscope for a long time; 2. the field of view scope is enlarged, and experimental phenomena are observed more intuitively. 3. And the experiment teaching is convenient. 4. The original experimental instrument is not changed, the experimental adjustment steps are not simplified, and the requirements of students on experiments are not reduced.
The barrel is divided into three parts of a mounting barrel 2, a connecting barrel 3 and a sleeve 5, and the three parts are detachably and movably connected, so that focusing and use can be facilitated, the first annular table 22 plays a limiting role, and the lower side of the mounting barrel 2 is ensured not to be contacted with the lower side of the connecting barrel 3.
The second annular table 45 functions as a grip portion to facilitate moving the lens assembly 4 for focusing.
The filter 24 can filter out part of the light to obtain a clearer image. The blocking ring 21 can protect the CCD sensor 23 and the optical filter 24 from being damaged by external force impact, and the sealing ring can enable the mounting cylinder 2 and the connecting cylinder 3 to be directly assembled more tightly.
In addition, the device can also be used for experimental equipment with ocular lenses such as telescope, spectrometer and the like.
Claims (1)
1. Microscope's eyepiece auxiliary observation device for physical teaching, its characterized in that: the device comprises a hollow barrel body with open upper and lower ends, a display arranged at the upper end of the barrel body, an image sensor arranged in the barrel body and a lens component which is arranged in the barrel body and is sufficient for realizing axial displacement, wherein the display is connected with the image sensor through a data line, the image sensor and the lens component are sequentially far away from the display from the near side to the far side, and the lens component comprises a plurality of lenses which are opposite to the image sensor and are sequentially spaced from each other;
the barrel comprises a mounting barrel, a connecting barrel and a sleeve which are connected up and down in sequence, and the cross sections of the mounting barrel, the connecting barrel and the sleeve are circular;
the upper end and the lower end of the mounting cylinder are both open, and the upper end of the mounting cylinder is provided with a first annular table extending circumferentially;
the upper end of the connecting cylinder is open, the lower end of the connecting cylinder is sealed in a circumferential adduction state, the central area of the lower end of the connecting cylinder is provided with internal threads for installing a lens assembly, and the outer wall of the lower end of the connecting cylinder is provided with external threads for connecting a sleeve;
the upper end and the lower end of the sleeve are both open, the upper end in the sleeve is provided with an internal thread which is matched with the external thread at the lower end of the connecting cylinder, at least three thread through holes are circumferentially and uniformly distributed at the lower part of the sleeve, the axes of the thread through holes are coplanar, the axis extension line of each thread through hole is vertically intersected with the axis of the sleeve, and a set screw is rotationally arranged in each thread through hole;
the mounting cylinder is inserted into the connecting cylinder from top to bottom, the first annular table is contacted with the connecting cylinder, a gap is reserved between the lower end of the mounting cylinder and the lower end seal of the connecting cylinder, and the lower end of the connecting cylinder is connected with the upper end of the sleeve in an internal and external screwing way;
the lens assembly further comprises a round lens barrel which is used for installing a plurality of lenses, and is provided with an opening at the upper end and the lower end, and the outer wall of the upper part of the lens barrel is provided with external threads which are matched with the internal threads of the connecting barrel;
the display is arranged above the first annular table, the image sensor and the data wire are arranged in the mounting cylinder, the lens barrel is rotatably arranged in the central area of the lower end of the connecting cylinder, and the specifications and the dimensions of the lower end seal of the connecting cylinder, the lens barrel and the sleeve are enough to enable the lens barrel to be positioned in the sleeve;
the image sensor adopts a CCD sensor or a CMOS sensor;
the lower end of the lens barrel is provided with a second annular table extending in the circumferential direction;
the lens comprises a first lens, a second lens and a third lens which are sequentially arranged at intervals from top to bottom, wherein the first lens is a convex-concave lens with an upward notch, the second lens is a biconvex lens, and the third lens is a biconvex lens;
the curvature radius of the upper curved surface of the first lens is 7.568mm, and the curvature radius of the lower curved surface is 27.195mm;
the curvature radius of the upper curved surface of the second lens is 12.636mm, and the curvature radius of the lower curved surface is 7.568mm;
the curvature radius of the upper curved surface of the third lens is 26.502mm, and the curvature radius of the lower curved surface is 19.897mm;
the distance between the first lens and the second lens along the axes is 0.6mm;
the distance between the second lens and the third lens along the axes is 0.8mm;
along the axis of the first lens, the distance between the upper curved surface of the first lens and the image sensor is 5-8mm;
along the axis of the third lens, the distance between the lower curved surface of the third lens and the surface of the object to be observed is 2-4mm;
the optical filter and the annular blocking ring are sequentially arranged below the image sensor in the mounting cylinder and sequentially contacted from top to bottom, and the blocking ring and the lower side of the mounting cylinder are coplanar;
and a sealing ring is also arranged between the mounting cylinder and the connecting cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711446170.2A CN107884921B (en) | 2017-12-27 | 2017-12-27 | Eyepiece auxiliary observation device of microscope for physical teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711446170.2A CN107884921B (en) | 2017-12-27 | 2017-12-27 | Eyepiece auxiliary observation device of microscope for physical teaching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107884921A CN107884921A (en) | 2018-04-06 |
| CN107884921B true CN107884921B (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711446170.2A Active CN107884921B (en) | 2017-12-27 | 2017-12-27 | Eyepiece auxiliary observation device of microscope for physical teaching |
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| Country | Link |
|---|---|
| CN (1) | CN107884921B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000180730A (en) * | 1998-12-16 | 2000-06-30 | Tochigi Nikon Corp | Optical observation device |
| CN101498834A (en) * | 2009-01-22 | 2009-08-05 | 重庆梧台科技发展有限公司 | Three-section adjustable electronic eyepiece of astronomical telescope |
| CN201344997Y (en) * | 2009-01-22 | 2009-11-11 | 重庆梧台科技发展有限公司 | Electric eyepiece with adjustable viewing field for optical microscope |
| CN203587871U (en) * | 2013-11-12 | 2014-05-07 | 奇瑞汽车股份有限公司 | Vehicle-mounted pick-up lens |
| CN207636841U (en) * | 2017-12-27 | 2018-07-20 | 蚌埠学院 | The microscopical eyepiece aided observing device of physics teaching |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW519242U (en) * | 2000-06-02 | 2003-01-21 | Digisystem Lab Instr Inc | Connector structure of optical instrument |
-
2017
- 2017-12-27 CN CN201711446170.2A patent/CN107884921B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000180730A (en) * | 1998-12-16 | 2000-06-30 | Tochigi Nikon Corp | Optical observation device |
| CN101498834A (en) * | 2009-01-22 | 2009-08-05 | 重庆梧台科技发展有限公司 | Three-section adjustable electronic eyepiece of astronomical telescope |
| CN201344997Y (en) * | 2009-01-22 | 2009-11-11 | 重庆梧台科技发展有限公司 | Electric eyepiece with adjustable viewing field for optical microscope |
| CN203587871U (en) * | 2013-11-12 | 2014-05-07 | 奇瑞汽车股份有限公司 | Vehicle-mounted pick-up lens |
| CN207636841U (en) * | 2017-12-27 | 2018-07-20 | 蚌埠学院 | The microscopical eyepiece aided observing device of physics teaching |
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| Publication number | Publication date |
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| CN107884921A (en) | 2018-04-06 |
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