CN215577266U - Microscope and telescope combined teaching aid - Google Patents
Microscope and telescope combined teaching aid Download PDFInfo
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- CN215577266U CN215577266U CN202122391539.2U CN202122391539U CN215577266U CN 215577266 U CN215577266 U CN 215577266U CN 202122391539 U CN202122391539 U CN 202122391539U CN 215577266 U CN215577266 U CN 215577266U
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Abstract
The utility model relates to the technical field of teaching tools, in particular to a microscope and telescope combined teaching aid which comprises a bottom platform, a support, an outer lens cone, a first inner lens cone and a second inner lens cone, wherein the support is arranged on the bottom platform, the middle part of the outer lens cone is hinged on the support, the first inner lens cone and the second inner lens cone are respectively movably and adjustably arranged at the left end and the right end of the outer lens cone, a first convex lens is fixedly arranged at the left port of the first inner lens cone, and a second convex lens is fixedly arranged at the right port of the second inner lens cone. The object lens and the ocular lens of the microscope and the telescope are convex lenses, a long focus and a short focus, and after being placed on the same straight line in front and back, the object lens and the ocular lens are observed from one end of the long focus convex lens (a second convex lens), and the distance between the two lenses is adjusted, so that the microscope is formed; the telescope is obtained by observing from one end of the short-focus convex lens (the first convex lens) and adjusting the distance between the two lenses.
Description
Technical Field
The utility model relates to the technical field of teaching aids, in particular to a combined teaching aid of a microscope and a telescope.
Background
In the fifth section microscope and telescope in the eight-grade physics (on-book) of the human education edition, the teaching materials briefly introduce the structures of the microscope and the telescope, and the imaging rules of the ocular lens (convex lens) and the objective lens (convex lens), but in the actual teaching process, because the biological microscope has high precision, complex early adjustment, downward fixed sight and small visual angle, the teaching materials are not convenient for classroom demonstration, and the final imaging of the telescope expressed in the teaching materials is inverted, and the imaging of the common telescope in life is upright, so that the learning process of students is confused in cognition, the understanding and mastering of related knowledge are not facilitated, and a teaching tool which is simple to operate and convenient for demonstration is urgently needed to solve the problems.
Disclosure of Invention
The utility model provides a microscope and telescope combined teaching aid, overcomes the defects of the prior art, and can effectively solve the problem that a teaching aid which is simple to operate and convenient to demonstrate is lacked in the prior art so that students can intuitively understand and master the imaging principle of a microscope and a telescope.
The purpose of the application is realized as follows: microscope and telescope combination teaching aid includes the sill, and a support, the outer tube of a drawtube, first inner tube of a drawtube, the second inner tube of a drawtube all is light tight drum, the support sets up on the sill, the middle part of outer tube of a drawtube articulates on the support, on the left side of outer tube of a drawtube, be provided with in the right-hand member mouth respectively and control flexible adjustable first inner tube of a drawtube, the second inner tube of a drawtube, first convex lens has set firmly in first inner tube of a drawtube, second convex lens has set firmly in the second inner tube of a drawtube, the light-passing board has set firmly on the up end of sill below the outer tube, the lamp pearl has set firmly in the sill below the light-passing board, built-in power supply in the sill, the switch has set firmly on the outer wall of sill, a power supply, a switch, lamp pearl electrical connection is in the same place.
The following are further optimization or/and improvement of the technical scheme of the utility model: further, still include first regulation post, the post is adjusted to the second, first inner lens cone set up in the left side port of outer lens cone and with outer lens cone between clearance fit, the second inner lens cone sets up in the right-hand member mouth of outer lens cone with the same reason, be provided with on the outer wall of outer lens cone with first inner lens cone, the corresponding first regulation slot hole in second inner lens cone position, the slot hole is adjusted to the second, one side of first regulation post is screw thread portion, the opposite side of first regulation post is handheld portion, the screw thread portion of first regulation post passes the section of thick bamboo wall threaded connection of first regulation slot hole and first inner lens cone, the lower terminal surface of the handheld portion of first regulation post compresses tightly on the outer lens cone outer wall of first regulation slot hole department, the second is adjusted the post and is adjusted the same and is installed on the second inner lens cone of second regulation slot department with the same reason with first regulation post structure.
Furthermore, length marked lines corresponding to the positions of the first adjusting long hole and the second adjusting long hole are respectively arranged on the outer walls of the left side and the right side of the outer lens cone.
Furthermore, a lens protective cap is respectively sleeved on the left port of the first inner lens barrel and the right port of the second inner lens barrel.
Further, the support includes preceding pole setting, the back pole setting, preceding pole setting is located the front side of base frame and its upside articulates on the front side outer wall of outer lens cone, the downside of preceding pole setting is articulated with the base frame, the link has set firmly on the right side of pole setting in the front, it is provided with the pull rod to correspond on the base frame on link right side, one side body coupling of pull rod has the couple of hanging on the link, the opposite side swing joint of stay rod is on the base frame, the rear side of base frame is provided with the back pole setting with the principle, the pull rod, the link, be provided with preceding pole setting under the ability holding horizontality on the up end of base frame, the back pole setting, the storage recess of outer lens cone.
The utility model has reasonable and compact structure, the object lens and the ocular lens of the microscope and the telescope are all convex lenses, one long focus and one short focus, after being placed on the same straight line in front and back, the object lens and the ocular lens are observed from one end of the long focus convex lens (a second convex lens), and the distance between the two lenses is adjusted, thus the utility model is the microscope; observe from short burnt convex lens (first convex lens) one end, adjust the distance between two lenses, just be the telescope, this device simple structure, convenient operation, the formation of image principle that can audio-visual demonstration microscope and telescope makes things convenient for the student to understand and master formation of image knowledge, have very strong practicality.
Drawings
The specific structure of the application is given by the following figures and examples:
FIG. 1 is a schematic sectional view of a microscope and telescope combined teaching aid;
fig. 2 is a schematic perspective view of a combined teaching aid of a microscope and a telescope.
Legend: 1. base, 2, outer lens cone, 3, first inner lens cone, 4, second inner lens cone, 5, first convex lens, 6, second convex lens, 7, light-passing board, 8, lamp pearl, 9, power, 10, switch, 11, first regulation post, 12, second regulation post, 13, first regulation slot hole, 14, second regulation slot hole, 15, length marking, 16, preceding pole setting, 17, back pole setting, 18, link, 19, pull rod, 20, accomodate the recess.
Detailed Description
The present application is not limited to the following examples, and specific implementations may be determined according to the technical solutions and practical situations of the present application.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction of fig. 1 in the specification.
The utility model is further described below with reference to examples and figures, examples being: as shown in attached figures 1 and 2, the combined teaching aid for the microscope and the telescope comprises a base platform 1, a bracket, an outer lens cone 2, a first inner lens cone 3 and a second inner lens cone 4, wherein the outer lens cone 2, the first inner lens cone 3 and the second inner lens cone 4 are all light-tight cylinders, the bracket is arranged on the base platform 1, the middle part of the outer lens cone 2 is hinged on the bracket, a first inner lens cone 3 and a second inner lens cone 4 which are telescopic and adjustable left and right are respectively arranged in the left end opening and the right end opening of the outer lens cone 2, a first convex lens 5 is fixedly arranged in the first inner lens cone 3, a second convex lens 6 is fixedly arranged in the second inner lens cone 4, a light-transmitting plate 7 is fixedly arranged on the upper end surface of the bottom platform 1 below the outer lens cone 2, a lamp bead 8 is fixedly arranged in the bottom platform 1 below the light-transmitting plate 7, a power supply 9 is arranged in the bottom platform 1, a switch 10 is fixedly arranged on the outer wall of the bottom platform 1, and the power supply 9, the switch 10 and the lamp bead 8 are electrically connected together.
Before the method for using the device is described, the imaging law of the convex lower lens and several basic concepts related to the convex lower lens are briefly described: parallel light rays (such as sunlight) are parallel to a main optical axis (a connecting line of spherical centers of two spherical surfaces of a convex lens is called as the main optical axis of the convex lens) and enter the convex lens, and light is transmittedAfter two surfaces of the mirror are refracted twice, the two surfaces are concentrated on one point on the axis, the point is called a focus of the convex lens, the distance from the focus to the center of the lens is called a focal length and is usually expressed by English f, the object distance is the distance from an object to the center of the lens and is expressed by English letter u, the distance from the center of the lens to an image is called an image distance and is expressed by English v, the projected object is assumed to be arranged in front of the convex lens, the light screen is correspondingly arranged behind the convex lens, and when u is expressed by English v>2f，f<v<When 2f, displaying an inverted reduced real image on the light screen; when u =2f and v =2f, a large real image such as an inverted image is displayed on the screen; when f is<u<2f，v>At 2f, displaying an inverted and enlarged real image on the light screen; when u is<At f, a virtual image is displayed on the screen, magnified upright. The first convex lens 5 and the second convex lens 6 are standard lenses, so the focal length f thereof1、f2Are all known parameters.
In demonstrating the imaging principle of a microscope: firstly, the lamp bead 8 is turned on through the switch 10, so that the lamp bead 8 illuminates the whole light-transmitting plate 7, then an observed object is placed on the light-transmitting plate 7, the brightness of the observed object is increased, a better observation effect is obtained, the first convex lens 5 (short focus) is used as an objective lens to be aligned to the observed object, the second convex lens 6 (long focus) is used as an eyepiece lens, the expansion degree of the first inner lens barrel 3 is firstly adjusted, and the object distance u between the observed object and the first convex lens 5 is adjusted through the expansion degree1To make the object distance u1At the focal length f of the first convex lens 51Within a range between one and two times as long as the length of the outer barrel 2 is appropriate (at least L is satisfied)>2f1L is the length of the outer barrel 2), an object image which is reversely enlarged is inevitably formed in the outer barrel 2, and then the degree of extension and retraction of the second inner barrel 4 is adjusted to make the object image fall into the focal length f of the second convex lens 62So that a further magnified inverted image is observed at the second convex lens 6, the stand may be fixed to the base 1 or may be movably mounted to the base 1. The first convex lens 5 and the second convex lens 6 are respectively blocked in the first inner lens cone 3 and the second inner lens cone 4.
The telescope in the teaching material is usually named Kepler telescope, which consists of long-focus convex lens (objective lens) and short-focus convex lensLens (eyepiece) constitution, when demonstrating telescope's formation of image principle: the second convex lens 6 (long focus) is used as an objective lens and faces a certain object far away, the first convex lens 5 (short focus) is used as an eyepiece lens, and the object to be observed is generally far away due to the telescope, and the object distance u is long2Is generally far beyond the focal length f of the second convex lens 62Twice of the first length, so that the object to be observed is imaged by the second convex lens 6 without additionally adjusting the telescopic degree of the second inner lens barrel 4 (if the distance is short, the telescopic degree of the second inner lens barrel 4 needs to be adjusted), an inverted and contracted object image is formed in the outer lens barrel 2, and at the moment, the telescopic degree of the first inner lens barrel 3 is adjusted, so that the object image formed by the second convex lens 6 falls on the focal length f which is one time of the first convex lens 51In this way, an enlarged inverted object image can be observed at the first convex lens 5 (eyepiece), which is identical to the imaging effect of a telescope expressed on the teaching material and is inverted, so that the cognition confusion of students can be greatly reduced.
That is, the objective lenses and ocular lenses of the microscope and the telescope are convex lenses, one long focus and one short focus, and after being placed in the same straight line in front and back, the distance between the two lenses is adjusted by observing from one end of the long focus convex lens (the second convex lens 6), thus obtaining the microscope; the distance between the two lenses is adjusted by observing from one end of the short-focus convex lens (the first convex lens 5), namely the telescope. The device has the advantages of simple structure and convenient operation, can visually demonstrate the imaging principle of the microscope and the telescope, is convenient for students to understand and master imaging knowledge, and has strong practicability.
According to the actual need, the combined teaching aid of the microscope and the telescope is further optimized or/and improved: further, as shown in fig. 1 and 2, the lens barrel further comprises a first adjusting column 11 and a second adjusting column 12, the first inner lens barrel 3 is arranged in the left port of the outer lens barrel 2 and is in clearance fit with the outer lens barrel 2, the second inner lens barrel 4 is similarly arranged in the right port of the outer lens barrel 2, be provided with on the outer wall of outer lens cone 2 with first inner barrel 3, the corresponding first regulation slot hole 13 in second inner barrel 4 position, second regulation slot hole 14, one side of first regulation post 11 is screw thread portion, the opposite side of first regulation post 11 is handheld portion, the screw thread portion of first regulation post 11 passes first regulation slot hole 13 and the section of thick bamboo wall threaded connection of first inner barrel 3, the lower terminal surface of the handheld portion of first regulation post 11 compresses tightly on the outer wall of outer lens cone 2 of first regulation slot hole 13 department, second regulation post 12 is the same with first regulation post 11 structure and installs on the second inner barrel 4 of second regulation slot hole 14 department with the same reason.
Through unscrewing first regulation post 11 and second regulation post 12, can adjust the elasticity of first inner barrel 3 and second inner barrel 4 along the length direction of first regulation slot hole 13 and second regulation slot hole 14, then the mode of rethread screwing up can make first regulation post 11 and second regulation post 12 top tighten on the section of thick bamboo wall of outer lens cone 2 to this fixes the position of first inner barrel 3 and second inner barrel 4, in order to realize observing the lasting demonstration of effect.
Further, as shown in fig. 2, length markings 15 corresponding to the positions of the first long adjustment hole 13 and the second long adjustment hole 14 are respectively provided on the outer walls of the left and right sides of the outer barrel 2.
The length scale 15 is provided for an intuitive distance reference for performing a precise adjustment when adjusting the extension and contraction of the first inner barrel 3 and the second inner barrel 4. In order to make an operator who demonstrates the imaging law more easily distinguish which is the long-focus convex lens and which is the short-focus convex lens, marks can be further arranged on the outer walls of the first inner lens barrel 3 and the second inner lens barrel 4 to show the difference.
Further, according to actual requirements, a lens cap is respectively sleeved on the left port of the first inner barrel 3 and the right port of the second inner barrel 4.
Through setting up the lens helmet, can carry out fine protection to first convex lens 5 and second convex lens 6, avoid the lens to grind the flower and damage, thereby perhaps debris, dust are infected with on lens and influence formation of image and observation effect.
Further, as shown in fig. 1 and 2, the support includes a front vertical rod 16 and a rear vertical rod 17, the front vertical rod 16 is located at the front side of the base platform 1, the upper side of the front vertical rod 16 is hinged to the outer wall of the front side of the outer lens barrel 2, the lower side of the front vertical rod 16 is hinged to the base platform 1, a hanging ring 18 is fixedly arranged at the right side of the front vertical rod 16, a pull rod 19 is correspondingly arranged on the base platform 1 at the right side of the hanging ring 18, one side of the pull rod 19 is integrally connected with a hook capable of being hung on the hanging ring 18, the other side of the stay rod is movably connected to the base platform 1, the rear vertical rod 17, the pull rod 19 and the hanging ring 18 are similarly arranged at the rear side of the base platform 1, and a containing groove 20 capable of containing the front vertical rod 16, the rear vertical rod 17 and the outer lens barrel 2 in a horizontal state is arranged on the upper end surface of the base platform 1.
After the device is used, the hook on the pull rod 19 is separated from the hanging ring 18, so that the front upright rod 16, the rear upright rod 17 and the outer lens cone 2 can be folded and flatly placed in the storage groove 20 through the hinged structure, the space volume of the whole device is reduced, and the storage is further facilitated.
The foregoing description is by way of example only and is not intended as limiting the embodiments of the present application. All obvious variations and modifications of the present invention are within the scope of the present invention.
Claims (8)
1. The utility model provides a microscope and telescope combination teaching aid, its characterized in that includes the sill, a support, the outer lens cone, first inner lens cone, second inner lens cone all is light-tight cylinder, the support sets up on the sill, the middle part of outer lens cone articulates on the support, on the left side of outer lens cone, be provided with in the right-hand member mouth respectively and control flexible adjustable first inner lens cone, second inner lens cone, first convex lens has set firmly in the first inner lens cone, second convex lens has set firmly in the second inner lens cone, the light-passing board has set firmly on the up end of sill below the outer lens cone, the lamp pearl has set firmly in the sill below the light-passing board, built-in power supply in the sill, the switch has set firmly on the outer wall of sill, a power supply, a switch, the lamp pearl electrical connection is in the same place.
2. The combined teaching aid of a microscope and a telescope according to claim 1, further comprising a first adjusting column and a second adjusting column, wherein the first inner barrel is disposed in the left port of the outer barrel and is in clearance fit with the outer barrel, the second inner barrel is similarly disposed in the right port of the outer barrel, be provided with on the outer wall of outer lens cone with first inner barrel, the corresponding first regulation slot hole in second inner barrel position, the slot hole is adjusted to the second, one side of first regulation post is screw thread portion, the opposite side of first regulation post is handheld portion, the screw thread portion of first regulation post passes the section of thick bamboo wall threaded connection of first regulation slot hole and first inner barrel, the lower terminal surface of the handheld portion of first regulation post compresses tightly on the outer lens cone outer wall of first regulation slot hole department, the second is adjusted the post and is installed on the second inner barrel of second regulation slot hole department with first regulation post structure the same and the same reason.
3. The combined teaching aid of a microscope and a telescope according to claim 1 or 2, wherein length markings corresponding to the positions of the first adjusting long hole and the second adjusting long hole are respectively arranged on the outer walls of the left side and the right side of the outer lens cone.
4. A combined teaching aid for microscopes and telescopes according to claim 1 or 2, wherein a lens cap is respectively sleeved on the left end of the first inner barrel and the right end of the second inner barrel.
5. A combined teaching aid for microscopes and telescopes as claimed in claim 3, wherein a lens cap is respectively sleeved on the left end of the first inner barrel and the right end of the second inner barrel.
6. A combined teaching aid for microscopes and telescopes as claimed in claim 3, wherein the support comprises a front vertical rod and a rear vertical rod, the front vertical rod is located at the front side of the base platform, the upper side of the front vertical rod is hinged to the outer wall of the front side of the outer lens cone, the lower side of the front vertical rod is hinged to the base platform, a hanging ring is fixedly arranged at the right side of the front vertical rod, a pull rod is correspondingly arranged on the base platform at the right side of the hanging ring, one side of the pull rod is integrally connected with a hook which can be hung on the hanging ring, the other side of the pull rod is movably connected to the base platform, the rear vertical rod, the pull rod and the hanging ring are arranged at the rear side of the base platform, and a containing groove which can contain the front vertical rod, the rear vertical rod and the outer lens cone in a horizontal state is arranged on the upper end surface of the base platform.
7. A combined teaching aid for microscopes and telescopes as claimed in claim 4, wherein the support comprises a front vertical rod and a rear vertical rod, the front vertical rod is located at the front side of the base platform, the upper side of the front vertical rod is hinged to the outer wall of the front side of the outer lens cone, the lower side of the front vertical rod is hinged to the base platform, a hanging ring is fixedly arranged at the right side of the front vertical rod, a pull rod is correspondingly arranged on the base platform at the right side of the hanging ring, one side of the pull rod is integrally connected with a hook which can be hung on the hanging ring, the other side of the pull rod is movably connected to the base platform, the rear vertical rod, the pull rod and the hanging ring are arranged at the rear side of the base platform, and a containing groove which can contain the front vertical rod, the rear vertical rod and the outer lens cone in a horizontal state is arranged on the upper end surface of the base platform.
8. The combined teaching aid of a microscope and a telescope as claimed in claim 1, 2 or 5, wherein the support comprises a front vertical rod and a rear vertical rod, the front vertical rod is located at the front side of the base platform, the upper side of the front vertical rod is hinged to the outer wall of the front side of the outer lens cone, the lower side of the front vertical rod is hinged to the base platform, a hanging ring is fixedly arranged at the right side of the front vertical rod, a pull rod is correspondingly arranged on the base platform at the right side of the hanging ring, one side of the pull rod is integrally connected with a hook capable of being hung on the hanging ring, the other side of the support rod is movably connected to the base platform, the rear vertical rod, the pull rod and the hanging ring are arranged at the rear side of the base platform in a similar manner, and a containing groove capable of containing the front vertical rod, the rear vertical rod and the outer lens cone in a horizontal state is arranged on the upper end surface of the base platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122391539.2U CN215577266U (en) | 2021-09-30 | 2021-09-30 | Microscope and telescope combined teaching aid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122391539.2U CN215577266U (en) | 2021-09-30 | 2021-09-30 | Microscope and telescope combined teaching aid |
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| CN215577266U true CN215577266U (en) | 2022-01-18 |
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| CN202122391539.2U Active CN215577266U (en) | 2021-09-30 | 2021-09-30 | Microscope and telescope combined teaching aid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200497133Y1 (en) * | 2022-01-28 | 2023-08-04 | 김동원 | instrument for explaining vision |
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2021
- 2021-09-30 CN CN202122391539.2U patent/CN215577266U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200497133Y1 (en) * | 2022-01-28 | 2023-08-04 | 김동원 | instrument for explaining vision |
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