CN219642410U

CN219642410U - Teaching aid assembly for optical experiment

Info

Publication number: CN219642410U
Application number: CN202320418403.2U
Authority: CN
Inventors: 邵航
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-09-05
Anticipated expiration: 2033-02-28

Abstract

The utility model provides a teaching aid component for optical experiments, which comprises a lens cone component and a card component; the lens barrel assembly comprises a first lens barrel, a second lens barrel and a third lens barrel; the first inner side width of the first lens barrel is larger than the second outer side width of the second lens barrel; the second inner width of the second lens barrel is larger than the third outer width of the third lens barrel. The utility model discloses a first lens cone, second lens cone and third lens cone combination insert first lens cone or second lens cone or third lens cone with the different cards of card subassembly and carry out optical experiment, can carry out the experiment to aperture imaging principle, lens imaging law, the focal length survey of lens, realize the optical imaging principle experiment to the difference.

Description

Teaching aid assembly for optical experiment

Technical Field

The utility model relates to the technical field of teaching aids, in particular to a teaching aid component for optical experiments.

Background

The optical experiment has important significance in physical teaching, and is helpful for students to deepen understanding and learning of optical knowledge. The teaching aid that is used for the optical experiment now is single, need use different teaching aids to experiment to different optical imaging principles, for example to aperture imaging principle, convex lens imaging law, concave lens imaging law, all need different teaching aids to carry out teaching experiments.

Disclosure of Invention

The utility model provides a teaching aid component for optical experiments, which aims to solve the technical problem that teaching aids for the optical experiments are single.

The technical scheme provided by the utility model is as follows:

the utility model provides a teaching aid component for optical experiments, which comprises a lens cone component and a card component; the lens barrel assembly comprises a first lens barrel, a second lens barrel and a third lens barrel;

the first lens barrel comprises a first side wall, a second side wall and a first front end wall, wherein the first side wall, the second side wall and the first front end wall form a first slideway, and the first front end wall is provided with a first clamping groove;

the second lens barrel comprises a third side wall, a fourth side wall and a second front end wall, wherein the third side wall, the fourth side wall and the second front end wall form a second slideway, and the second front end wall is provided with a second clamping groove;

the third lens barrel comprises a fifth side wall, a sixth side wall and a third front end wall, wherein the fifth side wall, the sixth side wall and the third front end wall form a third slideway, and a third clamping groove is formed in the third front end wall;

wherein, the first inner side width of the first lens barrel is larger than the second outer side width of the second lens barrel; the second inner width of the second lens barrel is larger than the third outer width of the third lens barrel.

In a preferred embodiment, graduations are provided on the second, fourth and sixth side walls.

In a preferred embodiment, the card assembly includes a plurality of different sized cards; the card is used for being inserted into the first clamping groove or the second clamping groove or the third clamping groove to carry out optical experiments.

In a preferred embodiment, the plurality of different format cards include: a plurality of lenticular lens cards of different lenticular lens diameter dimensions;

and biconcave lens card, F-lamp card, bai Bingka, aperture card and test strip card.

In a preferred embodiment, a plurality of lenticular lens cards of different lenticular lens diameter dimensions comprises:

a lenticular lens card having a lenticular lens diameter size of 31mm, a lenticular lens card having a lenticular lens diameter size of 40mm, and a lenticular lens card having a lenticular lens diameter size of 50 mm.

In a preferred embodiment, the lenticular focal length of a lenticular card with a lenticular diameter dimension of 31mm is f=65±2mm;

the lenticular focal length of the lenticular lens card with the lenticular lens diameter dimension of 40mm is f=130±2mm;

the lenticular focal length of the lenticular card with a lenticular diameter dimension of 50mm is f=180±5mm.

In a preferred embodiment, the biconcave lens of the biconcave lens card has a diameter of 30mm and a focal length of f=65±5mm.

In a preferred embodiment, the first snap ring is secured to the lenticular lens card, and the lenticular lens is mounted within the first snap ring.

In a preferred embodiment, a second snap ring is secured to the biconcave lens card, and the biconcave lens is mounted in the second snap ring.

In a preferred embodiment, the F-lamp card is fixed at one side thereof.

Compared with the prior art, the technical scheme of the utility model has at least the following beneficial effects:

the utility model provides a teaching aid component for optical experiments, which is characterized in that different cards of a card component are inserted into a first lens cone, a second lens cone or a third lens cone for optical experiments through the combination of the first lens cone, the second lens cone and the third lens cone, so that experiments can be carried out on the small-hole imaging principle, the lens imaging principle and the focal length measurement of a lens, and the experiments on different optical imaging principles can be realized.

The utility model provides a teaching aid assembly for optical experiments, which can realize telescope and microscope experiment establishment through different combinations of a first lens cone, a second lens cone and a third lens cone.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a first barrel of the present utility model.

Fig. 2 is a schematic view of a second barrel of the present utility model.

Fig. 3 is a schematic view of a third barrel of the present utility model.

Fig. 4 is a schematic view of a combination of the first barrel and the second barrel of the present utility model.

Fig. 5 is a schematic view of a combination of the first barrel, the second barrel, and the third barrel of the present utility model.

Fig. 6 is a schematic diagram of an F-lamp card of the present utility model.

Fig. 7 is a schematic view of the inside of the F-card of the present utility model.

Fig. 8 is a schematic view of a hole card of the present utility model.

Fig. 9 is a schematic plan view of a hole card of the present utility model.

Fig. 10 is a schematic diagram of the utility model Bai Bingka.

Fig. 11 is a schematic view of a lenticular card of the present utility model.

Fig. 12 is a schematic plan view of a lenticular card of the present utility model.

Fig. 13 is a schematic side view of a lenticular card of the present utility model.

Fig. 14 is a schematic view of a biconcave lens card according to the present utility model.

Fig. 15 is a schematic plan view of a biconcave lens card according to the present utility model.

Fig. 16 is a schematic side view of a biconcave lens card according to the present utility model.

Fig. 17 is a schematic diagram showing a combination state of teaching aid components according to the first embodiment of the present utility model.

Fig. 18 is a schematic diagram showing a combination state of teaching aid components in the second embodiment of the present utility model.

Fig. 19 is a schematic diagram showing a combined state of teaching aid components in the third embodiment of the present utility model.

Fig. 20 is a schematic diagram showing a combination state of teaching aid components in a fourth embodiment of the present utility model.

Fig. 21 is a schematic diagram showing a combined state of teaching aid components in a fifth embodiment of the present utility model.

Fig. 22 is a schematic diagram showing a combined state of teaching aid components in a sixth embodiment of the present utility model.

Fig. 23 is a schematic diagram showing a first combination state of teaching aid components in a seventh embodiment of the present utility model.

Fig. 24 is a schematic diagram showing a second combination state of teaching aid components in a seventh embodiment of the present utility model.

Fig. 25 is a schematic diagram showing a combination state of teaching aid components in the eighth embodiment of the present utility model.

Fig. 26 is a schematic diagram showing a combined state of teaching aid components in accordance with the ninth embodiment of the present utility model.

Fig. 27 is a schematic diagram showing a combined state of teaching aid components in accordance with the tenth embodiment of the present utility model.

Fig. 28 is a schematic diagram showing a combination state of teaching aid components in accordance with the eleventh embodiment of the present utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

It should be noted that "upper", "lower", "left", "right", "front", "rear", and the like are used in the present utility model only to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.

Referring to fig. 1 to 16, according to an embodiment of the present utility model, there is provided a teaching aid assembly for optical experiments, including a lens barrel assembly and a card assembly.

The barrel assembly includes a first barrel 100, a second barrel 200, and a third barrel 300. Fig. 1 is a schematic view of a first barrel of the present utility model. The first barrel 100 includes a first side wall 101, a second side wall 102, and a first front end wall 103. The first side wall 101, the second side wall 102 and the first front end wall 103 form a first slide 105. The first front end wall 103 is provided with a first clamping groove 104. The second side wall 102 is provided with a first scale 106.

The first outer width of the first barrel 100 is D1, and the first inner width of the first barrel 100 (the width of the first slide 105) is D1.

As shown in fig. 2, the second barrel 200 of the present utility model includes a third side wall 201, a fourth side wall 202, and a second front end wall 203. The third side wall 201, the fourth side wall 202 and the second front end wall 203 form a second slide 205. The second front end wall 203 is provided with a second clamping groove 204. A second scale 206 is provided on the fourth side wall 202.

The second outer width of the second barrel 200 is D2, and the second inner width of the second barrel 200 (the width of the second slide 205) is D2.

As shown in fig. 3, the third barrel 300 of the present utility model includes a fifth side wall 301, a sixth side wall 302, and a third front end wall 303. The fifth side wall 301, sixth side wall 302 and third front end wall 303 form a third slide 305. The third front end wall 303 is provided with a third clamping groove 304. A third scale 306 is provided on the sixth sidewall 302.

The third outer width of the third barrel 300 is D3, and the third inner width of the third barrel 300 (the width of the third slide rail 305) is D3.

According to an embodiment of the present utility model, the first inner width D1 of the first barrel 100 is greater than the second outer width D2 of the second barrel 200 to enable the second barrel 200 to be placed in the first slide 105 of the first barrel 100. As shown in fig. 4, the second barrel 200 is disposed in the first slide 105 of the first barrel 100, and the second barrel 200 can slide reciprocally in the first slide 105 of the first barrel 100.

According to an embodiment of the present utility model, the second inner width D2 of the second barrel 200 is greater than the third outer width D3 of the third barrel 300 to realize the placement of the third barrel 300 in the second slide 205 of the second barrel 200. As shown in fig. 5, the third barrel 300 is disposed in the second slide 205 of the second barrel 200, and the third barrel 300 can slide reciprocally in the second slide 205 of the second barrel 200.

In one embodiment, the length of the first barrel 100 is 200mm, the length of the second barrel 200 is 210mm, and the length of the third barrel 300 is 220mm.

According to an embodiment of the utility model, the card assembly includes a plurality of different sized cards. The card is used for being inserted into the first card slot 104, the second card slot 204 or the third card slot 304 to perform optical experiments. The card provided by the utility model is described below.

According to an embodiment of the present utility model, a plurality of different specifications of cards include: a plurality of lenticular lens cards 700 of different lenticular lens diameter dimensions, as well as biconcave lens card 800, F-lamp card 400, aperture cards 500, bai Bingka 600 and test strip card 900, test strip card 900 being shown in fig. 28.

As shown in fig. 6, a schematic diagram of the F-lamp card of the present utility model is shown in fig. 7, wherein the F-lamp 401 is fixed to one side of the F-lamp card 400. The F lamp 401 has a switch (not shown in the figure) by which the F lamp 401 is turned on or off. In a preferred embodiment, the F-lamp 401 is fixed inside the F-lamp card 400. In some preferred embodiments, the F-lamp 401 is firmly fixed to one side of the F-lamp card 400 by means of an adhesive.

As shown in a schematic diagram of the small hole card of the present utility model in fig. 8, a plan schematic diagram of the small hole card of the present utility model in fig. 9, a small hole 501 is formed in the small hole card 500, and the small hole card 500 of the present utility model is used for teaching experiments on the principle of small hole imaging.

A schematic representation of the utility model Bai Bingka, bai Bingka 800,800, as shown in fig. 10, was used for imaging in optical experiments.

As shown in a schematic view of the lenticular card of the present utility model in fig. 11, a plan view of the lenticular card of the present utility model in fig. 12, a side view of the lenticular card of the present utility model in fig. 13, and a lenticular lens 701 is provided on the lenticular card 700. Specifically, a first snap ring 702 is fixed to the lenticular lens card 700, and the lenticular lens 701 is mounted in the first snap ring 702.

According to an embodiment of the present utility model, a plurality of lenticular lens cards 700 of different lenticular lens diameter sizes includes:

the lenticular lens 701 has a lenticular lens card 700 with a diameter dimension of 31mm, and a lenticular lens focal length of f=65±2mm.

The lenticular lens 701 has a lenticular lens card 700 with a diameter dimension of 40mm, and a lenticular lens focal length of f=130±2mm.

The lenticular lens 701 has a lenticular lens card 700 with a diameter dimension of 50mm, and a lenticular lens focal length of f=180±5mm.

As shown in a schematic view of the inventive biconcave lens card of fig. 14, a schematic plan view of the inventive biconcave lens card of fig. 15, a schematic side view of the inventive biconcave lens card of fig. 16, and a biconcave lens 801 provided on the biconcave lens card 800. Specifically, a second snap ring 802 is fixed to the biconcave lens card 800, and the biconcave lens 801 is mounted in the second snap ring 802.

According to an embodiment of the present utility model, the diameter size of the biconcave lens 801 of the biconcave lens card 800 is 30mm, and the focal length of the biconcave lens 801 of the biconcave lens card 800 is f=65±5mm.

In one embodiment, the dimensions of the lenticular card 700, biconcave lens card 800, F-lamp card 400, aperture cards 500, bai Bingka 600, and test strip card 900 are 75mm x 75mm.

Embodiment one.

In the embodiment, the teaching aid component for optical experiments provided by the utility model is used for carrying out aperture imaging teaching experiments.

As shown in fig. 17, in the first embodiment of the present utility model, the second lens barrel 200 is disposed in the first slide 105 of the first lens barrel 100, and the third lens barrel 300 is disposed in the second slide 205 of the second lens barrel 200.

The F-lamp card 400 is inserted into the first card slot 104 of the first barrel 100, and the F-lamp 401 of the F-lamp card 400 faces the first slide 105 of the first barrel 100. The small hole card 500 is inserted into the second card slot 204 of the second barrel 200. Bai Bingka 600 is inserted into the third catching groove 304 of the third barrel 300.

The switch of the F lamp 401 of the F lamp card 400 is turned on, and the F lamp 401 is turned on. The second lens barrel 200 is fixed in position (the object distance U is unchanged) in the first slide way 105 of the first lens barrel 100, the third lens barrel 300 is adjusted to slide in the second slide way 205 of the second lens barrel 200 (the image distance V is adjusted), and the imaging rule of the F lamp 401 on the Bai Bingka is observed.

The second lens barrel 200 is adjusted to slide in the first slide way 105 of the first lens barrel 100 (the object distance U is adjusted), the position of the third lens barrel 300 in the second slide way 205 of the second lens barrel 200 is not moved (the image distance V is unchanged), and the imaging rule of the F lamp 401 on the Bai Bingka is observed.

The experiment through the small hole imaging proves that:

(1) Imaging the small hole to form an inverted real image;

(2) Light propagates along a straight line in the same homogeneous medium without interference from gravitational force;

(3) The closer the object distance U is, the larger the image on Bai Bingka and the darker the brightness. The farther the object distance U is, the smaller the image on Bai Bingka and the brighter the brightness.

Embodiment two.

In this embodiment, the teaching aid component for optical experiments provided by the utility model is used for measuring and teaching experiments of the focal length of the convex lens through a focal point non-imaging method. Convex lenses are refractive imaging, which focuses light.

As shown in fig. 18, in the second embodiment of the present utility model, the second lens barrel 200 is disposed in the first slide 105 of the first lens barrel 100.

The F-lamp card 400 is inserted into the first card slot 104 of the first barrel 100, and the F-lamp 401 of the F-lamp card 400 faces the first slide 105 of the first barrel 100. The lenticular lens card 700 having the lenticular lens 701 with a diameter size of 31mm is inserted into the second card slot 204 of the second barrel 200.

The switch of the F lamp 401 of the F lamp card 400 is turned off, and the F lamp 401 is extinguished. Adjusting the second barrel 200 to slide in the first card slide 105 of the first barrel 100 (adjusting the object distance U from small to large), viewing the F-lamp 401 through the lenticular lens 701, and continuing to increase the object distance U when the enlarged F-lamp 401 is observed; when the F lamp 401 is just invisible from the view, the object distance U measured on the first scale 106 of the first barrel 100 is read out.

The focal length f of the lenticular lens 701 having a diameter dimension of 31mm is equal to the object distance U at this position, i.e. f=u.

Embodiment three.

In the embodiment, the teaching aid component for optical experiments provided by the utility model is used for measuring and teaching experiments of the focal length of the convex lens through a double focal length method. Convex lenses are refractive imaging, which focuses light.

As shown in fig. 19, in the combined state of the teaching aid assembly in the third embodiment of the present utility model, the second lens barrel 200 is disposed in the first slide 105 of the first lens barrel 100, and the third lens barrel 300 is disposed in the second slide 205 of the second lens barrel 200.

The F-lamp card 400 is inserted into the first card slot 104 of the first barrel 100, and the F-lamp 401 of the F-lamp card 400 faces the first slide 105 of the first barrel 100. The lenticular lens card 700 having the lenticular lens 701 with a diameter size of 31mm is inserted into the second card slot 204 of the second barrel 200. Bai Bingka 600 is inserted into the third catching groove 304 of the third barrel 300.

The switch of the F lamp 401 of the F lamp card 400 is turned on, and the F lamp 401 is turned on. The second lens barrel 200 is adjusted to slide in the first clamping slide way 105 of the first lens barrel 100, the third lens barrel 300 is adjusted to slide in the second slide way 205 of the second lens barrel 200 (the object distance U and the image distance V are adjusted) until the object distance U measured on the first scale 106 of the first lens barrel 100 is read when the imaging of the F lamp 401 on the Bai Bingka is equal to the imaging of the F lamp 401.

The focal length f of the lenticular lens 701 having a diameter dimension of 31mm is equal to half the object distance U at this position, i.e., f= (1/2) U.

Example four.

In this embodiment, the teaching aid component for optical experiments provided by the utility model is used for measuring and teaching experiments of the focal length of the convex lens through a formula method. Convex lenses are refractive imaging, which focuses light.

As shown in fig. 20, in the combined state of the teaching aid assembly in the fourth embodiment of the present utility model, the second lens barrel 200 is disposed in the first slide 105 of the first lens barrel 100, and the third lens barrel 300 is disposed in the second slide 205 of the second lens barrel 200.

The switch of the F lamp 401 of the F lamp card 400 is turned on, and the F lamp 401 is turned on. The second lens barrel 200 is adjusted to slide in the first clamping slide way 105 of the first lens barrel 100, the third lens barrel 300 is adjusted to slide in the second slide way 205 of the second lens barrel 200 (the object distance U and the image distance V are adjusted), and after each clear imaging, the object distance U measured on the first scale 106 of the first lens barrel 100 and the image distance V measured on the second scale 206 of the second lens barrel 200 are read out. The focal length f is calculated according to the following formula, and the average value is obtained through multiple measurements:

example five.

In this embodiment, the teaching aid component for optical experiments provided by the utility model is used for measuring and teaching experiments of the focal length of the convex lens through a conjugation method. Convex lenses are refractive imaging, which focuses light.

As shown in fig. 21, in the fifth embodiment of the present utility model, the second lens barrel 200 is disposed in the first slide 105 of the first lens barrel 100, and the third lens barrel 300 is disposed in the second slide 205 of the second lens barrel 200.

The switch of the F lamp 401 of the F lamp card 400 is turned on, and the F lamp 401 is turned on. The second lens barrel 200 is adjusted to slide in the first clamping slide way 105 of the first lens barrel 100, and the third lens barrel 300 is adjusted to slide in the second slide way 205 of the second lens barrel 200, so that the distance L between the F lamp clamp 400 and the F lamp clamp Bai Bingka 600 is more than 300mm, and the L is kept unchanged.

Next, the first barrel 100 and the third barrel 300 are kept stationary, and the second barrel 200 is moved to move the second barrel 200 relative to the first barrel 100 and the third barrel 300 (the lenticular lens card 700 is moved between the F-lamp card 400 and the Bai Bingka 600), so that the image with the inverted light source is presented twice on the Bai Bingka. The position of the lenticular lens card 700 during the two imaging is recorded by the first scale 106 of the first lens barrel 100, so that the distance d of the lenticular lens card 700 moving during the two imaging is obtained, and the focal length f is calculated according to the conjugate symmetry formula:

example six.

In this embodiment, the teaching aid component for optical experiments provided by the utility model is used for teaching experiments on convex lens imaging rules. Convex lenses are refractive imaging, which focuses light.

As shown in fig. 22, in the combined state of the teaching aid assembly in the sixth embodiment of the present utility model, the second lens barrel 200 is disposed in the first slide 105 of the first lens barrel 100, and the third lens barrel 300 is disposed in the second slide 205 of the second lens barrel 200.

The switch of the F lamp 401 of the F lamp card 400 is turned on, and the F lamp 401 is turned on.

The second lens barrel 200 is adjusted to slide in the first slide way 105 of the first lens barrel 100 (the object distance U is gradually increased), the position of the third lens barrel 300 in the second slide way 205 of the second lens barrel 200 is not moved (the image distance V is unchanged), meanwhile, the object distance U is kept smaller than the focal length F, and the imaging condition of the F lamp 401 on the Bai Bingka is observed and recorded.

The second barrel 200 is adjusted to slide in the first slide 105 of the first barrel 100 (gradually increasing the object distance U), the position of the third barrel 300 in the second slide 205 of the second barrel 200 is not moved (the image distance V is unchanged), so that the object distance u=focal length F, and the imaging condition of the F lamp 401 on the Bai Bingka is observed and recorded.

The second lens barrel 200 is adjusted to slide in the first slide way 105 of the first lens barrel 100 (the object distance U is gradually increased), the position of the third lens barrel 300 in the second slide way 205 of the second lens barrel 200 is not moved (the image distance V is unchanged), meanwhile, F < U < 2F is kept, and the imaging condition of the F lamp 401 on the Bai Bingka is observed and recorded.

The second barrel 200 is adjusted to slide in the first slide 105 of the first barrel 100 (gradually increasing the object distance U), the position of the third barrel 300 in the second slide 205 of the second barrel 200 is fixed (the image distance V is unchanged), so that 2u=2f, and the imaging condition of the F lamp 401 on Bai Bingka is observed and recorded.

The second lens barrel 200 is adjusted to slide in the first slide way 105 of the first lens barrel 100 (the object distance U is gradually increased), the position of the third lens barrel 300 in the second slide way 205 of the second lens barrel 200 is not moved (the image distance V is unchanged), meanwhile, U > 2F is kept, and the imaging condition of the F lamp 401 on the Bai Bingka is observed and recorded.

By conducting experiments on the convex lens imaging law, the conclusion is shown in table 1:

table 1: convex lens imaging law

Example seven.

In this embodiment, the teaching aid component for optical experiments provided by the utility model is used for measuring and teaching experiments of focal length of concave lenses. Concave lenses are refractive imaging, which diverges light.

As shown in fig. 23, in a first combined state schematic diagram of the teaching aid assembly in the seventh embodiment of the present utility model, the second lens barrel 200 is disposed in the first slide 105 of the first lens barrel 100, and the third lens barrel 300 is disposed in the second slide 205 of the second lens barrel 200.

The second barrel 200 is adjusted to slide in the first card slide 105 of the first barrel 100, the third barrel 300 is adjusted to slide in the second slide 205 of the second barrel 200, so that the F lamp 401 forms an image on the Bai Bingka (for realizing the experimental effect later, the adjustment to the reduced real image imaging is recommended), and the distance L1 between the F lamp cards 400 and Bai Bingka is recorded.

As shown in fig. 24, in a second combined state schematic diagram of the teaching aid assembly in the seventh embodiment of the present utility model, bai Bingka 600 is pulled out from the third clamping groove 304 of the third lens barrel 300, and the biconcave lens card 800 with the diameter dimension of the biconcave lens 801 being 30mm is inserted into the third clamping groove 304 of the third lens barrel 300.

The second lens barrel 200 is fixed in position in the first slide way 105 of the first lens barrel 100, the third lens barrel 300 is adjusted to slide in the second slide way 205 of the second lens barrel 200 towards the direction of the biconvex lens card 700, meanwhile, the hand-held Bai Bingka is moved towards the direction of the biconcave lens card 800 (Bai Bingka is kept parallel to the biconcave lens card 800 as much as possible and the center is on the same horizontal line in the moving process), and the F lamp 401 clearly images on the Bai Bingka 600. The distance L2 between the biconcave lens card 800 and the F-lamp card 400 at this time, and the distance L3 between the biconcave lens card 800 and Bai Bingka are recorded.

The focal length f of the biconcave lens card 800 is calculated according to the following formula:

example eight.

In this embodiment, the teaching aid component for optical experiments provided by the utility model is used for teaching experiments on the imaging rule of the concave lens. Concave lenses are refractive imaging, which diverges light.

As shown in fig. 25, in the schematic diagram of the combined state of the teaching aid components in the eighth embodiment of the present utility model, the second lens barrel 200 is disposed in the first slide 105 of the first lens barrel 100.

The F-lamp card 400 is inserted into the first card slot 104 of the first barrel 100, and the F-lamp 401 of the F-lamp card 400 faces the first slide 105 of the first barrel 100. The biconcave lens card 800 having a diameter size of 30mm of the biconcave lens 801 is inserted into the second card groove 204 of the second barrel 200.

The second lens barrel 200 is adjusted to slide in the first card slide way 105 of the first lens barrel 100, the distance between the F lamp card 400 and the biconcave lens card 800 is gradually increased, and the imaging condition of the F lamp 401 between the F lamp card 400 and the biconcave lens card 800 is observed and recorded.

By carrying out experiments on the imaging rule of the concave lens, a conclusion is drawn:

when the object is a real object, an upright and contracted virtual image is formed, and the image sum object is arranged on the same side of the concave lens.

Example nine.

In this embodiment, a keplerian telescope (astronomical telescope) is built by using the teaching aid assembly for optical experiments provided by the utility model. The kepler telescope is composed of two convex lenses, and the kepler telescope imaging is upside down and left and right reversed.

As shown in fig. 26, in the combined state schematic diagram of the teaching aid assembly in the ninth embodiment of the present utility model, the second lens barrel 200 is disposed in the first slide 105 of the first lens barrel 100, and the front end of the first lens barrel 100 and the front end of the second lens barrel 200 are respectively located at two sides. That is, the front end wall 103 of the first barrel 100 and the front end wall 203 of the second barrel 200 are placed in the first slide 105 of the first barrel 100 in a manner away from each other.

The lenticular lens card 700 having a diameter size of 50mm of the lenticular lens 701 is inserted into the first card slot 104 of the first barrel 100. The lenticular lens card 700 having the lenticular lens 701 with a diameter size of 31mm is inserted into the second card slot 204 of the second barrel 200.

The simple astronomical telescope is constituted by taking a 50mm diameter biconvex lens 701 as an objective lens and a 31mm diameter biconvex lens 701 as an eyepiece lens. In the teaching experiment of the embodiment, students are guided to watch objects at a distance and watch imaging conditions.

Embodiment ten.

In the embodiment, the Galilean telescope is built by using the teaching aid component for optical experiments. The objective lens of galilean telescope is a convex lens (converging lens) and the eyepiece lens is a concave lens (diverging lens) telescope. Galilean telescope presents an enlarged, upright virtual image.

As shown in fig. 27, in the schematic view of the combined state of the teaching aid components in the tenth embodiment of the present utility model, the second lens barrel 200 is disposed in the first slide 105 of the first lens barrel 100.

The lenticular lens card 700 having a diameter size of 50mm of the lenticular lens 701 is inserted into the first card slot 104 of the first barrel 100. The biconcave lens card 800 having a diameter size of 30mm of the biconcave lens 801 is inserted into the second card groove 204 of the second barrel 200.

The simple galilean telescope is constructed by using a 50mm diameter biconvex lens 701 as the objective lens and a 30mm diameter biconcave lens 801 as the eyepiece.

In the teaching experiment of the embodiment, students are guided to watch objects at a distance, and the distance between the biconvex lens card 700 and the biconcave lens card 800 is gradually increased by moving the second lens barrel 200 at the position of the first slide way 105 of the first lens barrel 100, so as to watch imaging conditions.

Example eleven.

In the embodiment, the microscope is built by using the teaching aid assembly for optical experiments. The lens of microscope lens barrel has a group of lens at both ends, and each group of lens acts as a convex lens, and the convex lens near the eyes is called an eyepiece, and the convex lens near the observed object is called an objective lens. The light from the observed object passes through the objective lens to form a magnified real image, and the eyepiece acts like a common magnifying lens to magnify the image once again. Through the two amplification actions, small objects which are invisible to the naked eye can be seen. The microscope presents a magnified virtual image of the upright.

As shown in fig. 28, in the combined state of the teaching aid assembly in the eleventh embodiment of the present utility model, the second lens barrel 200 is disposed in the first slide 105 of the first lens barrel 100, and the third lens barrel 300 is disposed in the second slide 205 of the second lens barrel 200.

The lenticular lens card 700 having a diameter size of 50mm of the lenticular lens 701 is inserted into the first card slot 104 of the first barrel 100. The lenticular lens card 700 having the lenticular lens 701 with a diameter size of 31mm is inserted into the second card slot 204 of the second barrel 200. The test piece card 900 is inserted into the third card slot 304 of the third barrel 300, the test piece card 900 has a minute object thereon, and one side of the test piece card 900 having the minute object faces the lenticular lens card 700 having a diameter dimension of 31mm of the lenticular lens 701.

The second barrel 200 was adjusted to slide in the first card slide 105 of the first barrel 100 so that the distance between the lenticular lens card 700 having the lenticular lens 701 diameter size of 50mm and the lenticular lens card 700 having the lenticular lens 701 diameter size of 31mm was 105mm.

The third barrel 300 was adjusted to slide in the second slide 205 of the second barrel 200 so that the distance between the lenticular lens card 700 and the test piece card 900, which were 31mm in diameter of the lenticular lens 701, was 13mm.

The lenticular lens card 700 having a diameter of 50mm of the lenticular lens 701 is used as an eyepiece, which constitutes a simple microscope model from which minute objects on the test piece card 900 are observed.

The following points need to be described:

(1) The drawings of the embodiments of the present utility model relate only to the structures related to the embodiments of the present utility model, and other structures may refer to the general designs.

(2) In the drawings for describing embodiments of the present utility model, the thickness of layers or regions is exaggerated or reduced for clarity, i.e., the drawings are not drawn to actual scale. It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.

(3) The embodiments of the utility model and the features of the embodiments can be combined with each other to give new embodiments without conflict.

The present utility model is not limited to the above embodiments, but the scope of the utility model is defined by the claims.

Claims

1. A teaching aid assembly for optical experiments, the teaching aid assembly comprising a lens barrel assembly and a card assembly; the lens barrel assembly comprises a first lens barrel, a second lens barrel and a third lens barrel;

2. The teaching aid assembly according to claim 1, wherein graduations are provided on the second side wall, the fourth side wall, and the sixth side wall.

3. The teaching aid assembly of claim 1, wherein the card assembly comprises a plurality of different sized cards;

the card is used for being inserted into the first clamping groove or the second clamping groove or the third clamping groove to carry out optical experiments.

4. A teaching aid assembly according to claim 3, wherein the plurality of different format cards comprises: a plurality of lenticular lens cards of different lenticular lens diameter dimensions;

5. The teaching aid assembly of claim 4, wherein the plurality of lenticular lens cards of different lenticular lens diameter dimensions comprises:

6. A teaching aid assembly according to claim 5, characterized in that the lenticular focal length of a lenticular lens card with a lenticular lens diameter dimension of 31mm is f = 65 ± 2mm;

7. The teaching aid assembly of claim 4, wherein the biconcave lens diameter of the biconcave lens card is 30mm and the biconcave lens focal length of the biconcave lens card is f = 65 ± 5mm.

8. The teaching aid assembly according to claim 4, wherein the lenticular lens card is secured to the first collar and the lenticular lens is mounted within the first collar.

9. The teaching aid assembly according to claim 4, wherein the bi-concave lens is mounted within the second snap ring with the second snap ring secured thereto.

10. The teaching aid assembly according to claim 4, wherein the F light is fixed to one side of the F light card.