CN203465883U - Demonstration teaching aid for convex lens imaging teaching - Google Patents

Demonstration teaching aid for convex lens imaging teaching Download PDF

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Publication number
CN203465883U
CN203465883U CN201320605826.1U CN201320605826U CN203465883U CN 203465883 U CN203465883 U CN 203465883U CN 201320605826 U CN201320605826 U CN 201320605826U CN 203465883 U CN203465883 U CN 203465883U
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China
Prior art keywords
teaching aid
convex lens
lens
demonstration teaching
light source
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Expired - Fee Related
Application number
CN201320605826.1U
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Chinese (zh)
Inventor
倪悦端
施小莉
沈霞芳
任秀娟
莫敏·江
汪甜
陈慧诚
彭保进
郑圆成
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Zhejiang Normal University CJNU
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Zhejiang Normal University CJNU
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Priority to CN201320605826.1U priority Critical patent/CN203465883U/en
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Abstract

The utility model discloses a demonstration teaching aid for convex lens imaging teaching. The demonstration teaching aid is composed of an optical tool and an optical tool base. The optical tool comprises a water lens, an injector, a laser light source and a ground glass optical screen. The optical tool base comprises a drawable small wooden box on the left, a drawable big wooden box on the right, a base wooden board with scales and grooves for holding smoke cakes. The teaching aid is convenient to carry, to adjust and to use, and is capable of adjusting the height of the light source, the lens and the optical screen directly without adjusting frequently; the curvature of an elastic transparent thin film can be adjusted through the focus-variable water lens, the focal length can be adjusted autonomously. An atomization device displays a light path, so that the clear position of the focus can be obtained, clear image can be obtained, and laws of convex lens imaging are explored. The semienclosed drawable wooden boxes are in relative movement to simulate slide rails, so that object distance, image distance and focal distance can be read conveniently. Material-choosing is easy and convenient; phenomenon is visual and vivid; operation is simple; and safety is guaranteed; therefore, students can easily understand the convex lens imaging, autonomous exploration capability of the students is improved, and class quality is improved.

Description

A kind of convex lens demonstration teaching aid
Technical field
The utility model, for junior middle school's Scientific Teaching demonstration teaching aid, is specifically related to a kind of convex lens imaging demonstration teaching aid.
Background technology
In junior middle school's teaching, convex lens problem is a large difficult point of optics teaching always.But existing teaching aid is comprehensive not to the displaying of convex lens, for presented light path, without teaching aid, demonstrate, student cannot intuitively profoundly understand intension wherein.And the instrument that we design has good intuitive and vividness, can help better the knowledge of the effect of converging of Students ' Learning convex lens and imaging.
In the 6th joint convex lens experiment of seven grades volume two first modules of existing Zhejiang religion version, experiment teaching aid is comparatively heavy, Er Ruozhuyan center, convex lens photocentre and optical screen center be at sustained height, on optical screen, can not find as time just must readjust three's height, be used in combination more inconvenient.Experiment can not demonstrate index path, and the focal length of lens can not directly be measured, and can only observe the phenomenon on optical screen, cannot make student see the most intuitively and understand light path.Due to condition restriction, what secondary school physical optical experiment was equipped with at present is all the lens of fixed focal length, if will change focal length, needs to change another lens, and expense is relatively large.
Based on above phenomenon, the design of this teaching aid has the feature of convenience, intuitive, economy.Can as in the teacher that studies science have the auxiliary content of optics class, show experimental phenomena clear and intuitively, excite student's interest, improve the quality of attending class.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of water lens that can change focal length, and can pass through atomising device display light rood to the convex lens imaging demonstration teaching aid of focal length.
The utility model is achieved through the following technical solutions: a kind of convex lens demonstration teaching aid, by light tool and optical bench, formed, light tool comprises water lens, syringe, LASER Light Source and frosted glass optical screen, optical bench comprise be positioned at the pulling and pushing little tub, be positioned at the large tub of pulling and pushing of right side of left side, with the base plank of scale be used for laying the groove of cake, described LASER Light Source is arranged on the left side of optical bench, frosted glass optical screen is arranged on the right side of optical bench, water lens are arranged on the inside of optical bench, and syringe is connected on water lens; Described groove is provided with two, and is separately positioned on and can pulls and pushes little tub and can pulling and pushing in large tub.
Convex lens demonstration teaching aid of the present utility model, described base plank one side has scale, and centre is zero graduation value, and both sides scale value is respectively to two edge heights, and water lens are fixed on the zero graduation place of base plank.
Convex lens demonstration teaching aid of the present utility model, described water lens bottom is provided with water lens carrier, is provided with two elasticity transparent rubber films on water lens.
Convex lens demonstration teaching aid of the present utility model, is decorated with grid on described frosted glass plate optical screen.
Convex lens demonstration teaching aid of the present utility model, described LASER Light Source, LASER Light Source is wrapped with the printing opacity scraps of paper of a special shape.
The beneficial effects of the utility model are: it is easy to use that this teaching aid carries arrangement, can directly adjust the height of light source, lens, optical screen, without often adjusting; By the curvature of varifocal water lens adjustment elastic transparent film, independently focus.Atomising device demonstrates light path, obtains the clear position of focus, obtain clearly as, probe into convex lens image-forming discipline.Two semi-enclosed tubs that pull and push simulation slide rail that relatively moves, conveniently reads object distance, image distance, focal length.Selection is easy, and visual phenomenon is vivid, simple to operate, and safety guarantee makes student's easy to understand, improves student's independent research capacity, and Classroom instruction quality gets a promotion.
Accompanying drawing explanation
For ease of explanation, the utility model is described in detail by following specific embodiment and accompanying drawing.
Fig. 1 is the device schematic diagram of convex lens demonstration teaching aid of the present utility model.
Fig. 2 is the varifocal water lens front elevation of convex lens demonstration teaching aid of the present utility model.
Embodiment
As depicted in figs. 1 and 2, a kind of convex lens demonstration teaching aid, by light tool and optical bench, formed, light tool comprises water lens 2, syringe 5, LASER Light Source 7 and frosted glass optical screen 4, optical bench comprise be positioned at the pulling and pushing little tub 1, be positioned at the large tub 3 of pulling and pushing of right side of left side, with the base plank 6 of scale be used for laying the groove 8 of cake, described LASER Light Source 7 is arranged on the left side of optical bench, frosted glass optical screen 4 is arranged on the right side of optical bench, water lens 2 are arranged on the inside of optical bench, and syringe 5 is connected on water lens 2; Described groove 8 is provided with two, and is separately positioned on and can pulls and pushes little tub 1 and can pull and push in large tub 3.
Convex lens demonstration teaching aid of the present utility model, described base plank 6 one sides have scale, and centre is zero graduation value, and both sides scale value is respectively to two edge heights, can directly read the distance of light source and lens and the distance of optical screen and lens, and the focal length of lens; And water lens 2 are fixed on the zero graduation place of base plank 6.
Convex lens demonstration teaching aid of the present utility model, described water lens 2 bottoms are provided with water lens carrier 10, on water lens 2, be provided with two elasticity transparent rubber films 9, water lens 2 compress by two good elasticity transparent rubber films 9 of light transmission the both sides that are encapsulated in a water proof rubber circle, formation can be held the annular seal space of water, is fixed on water lens carrier 10.
Convex lens demonstration teaching aid of the present utility model, is decorated with grid (not shown) on described frosted glass plate optical screen 4, can clearly tell the size variation of picture.
Convex lens demonstration teaching aid of the present utility model, described LASER Light Source 7, LASER Light Source 7 is wrapped with the printing opacity scraps of paper (not shown) of a special shape, can on optical screen, form clear and legible other picture, can have the various shape scraps of paper to replace.
Water lens are linked outward on syringe, by water filling or draw water, change focal length.Cake is lighted, and can obtain atomizing effect, and LASER Light Source penetrates directional light, can be observed obvious light path and light convergent point, is focus, and the corresponding scale in focus below is focal length.Movement can pull and push little tub and can pull and push large tub, changes object distance image distance, observes imaging on frosted glass plate, syringe is connected on rubber ring, discharges air, and water is injected and extracted out, the degree of convexity that changes elasticity transparent rubber film, can change focal length continuously in experimental requirement.
The above, be only embodiment of the present utility model, but protection domain of the present utility model is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims were limited.

Claims (5)

1. a convex lens demonstration teaching aid, by light tool and optical bench, formed, light tool comprises water lens (2), syringe (5), LASER Light Source (7) and frosted glass optical screen (4), optical bench comprise be positioned at left side pull and push little tub (1), be positioned at the large tub of pulling and pushing of right side (3), with the base plank (6) of scale be used for laying the groove (8) of cake, it is characterized in that: described LASER Light Source is arranged on the left side of optical bench, frosted glass optical screen is arranged on the right side of optical bench, water lens are arranged on the inside of optical bench, syringe is connected on water lens, described groove is provided with two, and is separately positioned on and can pulls and pushes little tub and can pulling and pushing in large tub.
2. convex lens demonstration teaching aid as claimed in claim 1, it is characterized in that: described base plank (6) one sides have scale, centre is zero graduation value, and both sides scale value is respectively to two edge heights, and water lens (2) are fixed on the zero graduation place of base plank (6).
3. convex lens demonstration teaching aid as claimed in claim 1, is characterized in that: described water lens bottom is provided with water lens carrier (10), is provided with two elasticity transparent rubber films (9) on water lens.
4. convex lens demonstration teaching aid as claimed in claim 1, is characterized in that: on described frosted glass plate optical screen, be decorated with grid.
5. convex lens demonstration teaching aid as claimed in claim 1, is characterized in that: described LASER Light Source (7), LASER Light Source is wrapped with the printing opacity scraps of paper of a special shape.
CN201320605826.1U 2013-09-29 2013-09-29 Demonstration teaching aid for convex lens imaging teaching Expired - Fee Related CN203465883U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320605826.1U CN203465883U (en) 2013-09-29 2013-09-29 Demonstration teaching aid for convex lens imaging teaching

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108538168A (en) * 2018-06-29 2018-09-14 德清创能电子科技有限公司 The inside casing mechanism of science popularization teaching lens imaging demonstration device
CN108538169A (en) * 2018-06-29 2018-09-14 德清创能电子科技有限公司 The outline border mechanism of science popularization teaching lens imaging demonstration device
CN108766158A (en) * 2018-06-29 2018-11-06 德清创能电子科技有限公司 Pin-connected panel science popularization teaching lens imaging demonstration device
CN115171493A (en) * 2022-07-29 2022-10-11 徐�明 Demonstration tool for physical property teaching and use method thereof
CN115597839A (en) * 2022-12-13 2023-01-13 苏州熠品质量技术服务有限公司(Cn) Method and system for measuring focal length by using relative displacement

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108538168A (en) * 2018-06-29 2018-09-14 德清创能电子科技有限公司 The inside casing mechanism of science popularization teaching lens imaging demonstration device
CN108538169A (en) * 2018-06-29 2018-09-14 德清创能电子科技有限公司 The outline border mechanism of science popularization teaching lens imaging demonstration device
CN108766158A (en) * 2018-06-29 2018-11-06 德清创能电子科技有限公司 Pin-connected panel science popularization teaching lens imaging demonstration device
CN115171493A (en) * 2022-07-29 2022-10-11 徐�明 Demonstration tool for physical property teaching and use method thereof
CN115597839A (en) * 2022-12-13 2023-01-13 苏州熠品质量技术服务有限公司(Cn) Method and system for measuring focal length by using relative displacement

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140305

Termination date: 20140929

EXPY Termination of patent right or utility model