Adjustable eyeball imaging model

Abstract

An adjustable eyeball imaging model comprises an optical bench, the optical bench is provided with a light source, an eyeball model and a data acquisition device, and the data acquisition device comprises a data acquisition unit, a sliding potentiometer, a distance measurement module and a data processor. The data collector is electrically connected with the sliding potentiometer, the distance measuring module and the data processor, and an electric brush head of the sliding potentiometer is fixedly connected with a push rod of the first injector. According to the use principle, the electric brush head of the sliding potentiometer is connected with the push rod of the first injector, the feeding amount of the first injector is recorded to simulate the curvature change of the crystalline lens, and the distance between the light source and the crystalline lens simulated by the first water lens is recorded through the distance measuring module. The relationship between the object distance and the change of the lens curvature is explored; and finally, data is processed through a data acquisition device, a scatter diagram is generated online, and a mathematical model is established, so that data recording is convenient and accurate, and the teaching effect is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of teaching experiment demonstration technology, and in particular to an adjustable eyeball imaging model. Background Technology

[0002] The principle of eye imaging: The human eye's ability to see objects clearly at different distances is related to the adjustment of the lens curvature. The curvature is smaller when viewing distant objects and larger when viewing near objects. As the object is viewed from a distance, the lens curvature increases. Water lens: By injecting or removing liquid into a water lens using a piston, the lens curvature can be changed, thereby altering the convergence and divergence of light beams, allowing objects to be imaged from different positions.

[0003] Currently, many eye imaging devices are used for experimental teaching. Utility model patent CN215932981U discloses an eye imaging demonstrator, relating to the field of teaching experimental demonstration technology. It includes a base, a laser panel mounted on one side of the base via a first fixing rod, multiple laser lights and a battery pack on the outer side of the laser panel, an eye model mounted on the other side of the base via a second fixing rod, a water lens fixed inside the eye model, a retina fixed outside the eye model, a through-slot on the side, a syringe connected to the side wall of the water lens via an infusion tube for injecting or absorbing water into the water lens, a smoke generator with a smoke delivery tube connected to its outlet, the end of the smoke delivery tube extending into the eye model to generate smoke, and a corrective lens slidably positioned between the laser panel and the eye model via a lens rod. However, this device requires manual recording of experimental data, which is prone to inaccurate recording and is cumbersome. Summary of the Invention

[0004] The problem this invention aims to solve is to provide an adjustable eyeball imaging model that records data through a data acquisition device, making the recording convenient and accurate, and enhancing the teaching effect.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an adjustable eye imaging model, including an optical bench, on which a light source, an eye model, and a data acquisition device are provided. The light source is slidably connected to the optical bench, and the eye model is positioned in front of the direction of light irradiation from the light source. The eye model includes a vitreous body, a first water lens fixed to the vitreous body, and a first syringe connected to the first water lens. The syringe barrel is fixed to the optical bench, and the plunger of the first syringe is slidably connected to the optical bench. The data acquisition device includes a data acquisition unit, a sliding potentiometer, a ranging module, and a data processor. The data acquisition unit is electrically connected to the sliding potentiometer, the ranging module, and the data processor, respectively. The brush head of the sliding potentiometer is fixedly connected to the plunger of the first syringe. The working principle of this invention is as follows: A connection is established between the brush head of the sliding potentiometer and the push rod of the first syringe. The feed amount of the first syringe is recorded to simulate the curvature change of the lens. The distance between the light source and the lens simulated by the first water lens is recorded by the distance measuring module to explore the relationship between the object distance and the curvature change of the lens. Finally, the data is processed by the data acquisition device to generate a scatter plot online and establish a mathematical model, making data recording convenient and accurate, and enhancing the teaching effect.

[0006] As an improvement, the glass body has a cavity inside, the front end of the glass body has an opening that connects to the cavity, the first water lens is fixed at the opening, the ranging module is located directly below the first water lens, and a circular paper is provided on the rear end surface of the glass body.

[0007] As an improvement, the optical bench is provided with a first slider, a second slider, a third slider and a fourth slider in sequence from front to back. The light source is fixed on the first slider, the glass body is fixed on the third slider, and the push rod of the first syringe and the brush head of the sliding potentiometer are fixed on the fourth slider.

[0008] As an improvement, the second slider is provided with a variable aperture and an arc-shaped block. The variable aperture is located on the inner wall of the arc-shaped block. The slide bar of the variable aperture is fixedly connected to the second slider. The arc-shaped block is a transparent block. Iris paper is provided between the arc-shaped block and the variable aperture.

[0009] As an improvement, the second slider is provided with a second water lens that is fixedly connected to it, and the second water lens is connected to the second syringe.

[0010] As an improvement, the optical bench is provided with a protective shell and a protective frame that are fixedly connected to it, the data acquisition device is located inside the protective shell, and the sliding potentiometer is located on the protective frame.

[0011] As an improvement, the ranging module is located at the bottom of the eyeball model.

[0012] As an improvement, a water-stopping clamp is provided between the first syringe and the first water lens.

[0013] The beneficial effects of this utility model are as follows: This utility model can enable students to more clearly understand the principle of eyeball imaging and the prevention, formation and correction of myopia through three sets of experiments; the experimental operation is simple and uncomplicated, making it convenient for classroom operation; one set of experimental equipment can carry out three sets of experiments, making it multi-purpose, saving resources and maximizing efficiency; the curvature change of the lens is simulated by recording the feed amount of the first syringe through a sliding potentiometer, the distance measuring module records the position of the light source, and the data acquisition device and data processor process the data to generate scatter plots online and establish mathematical models, making the exploration process visual, intuitive, quantitative and information-based. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the first experimental setup.

[0015] Figure 2 This is a three-dimensional structural diagram of the second experimental setup.

[0016] Figure 3 This is a three-dimensional structural diagram of the third set of experimental apparatus.

[0017] Figure 4 This is a structural cross-sectional view of an eyeball model.

[0018] Figure 5 This is a cross-sectional view of the variable aperture and the arc block.

[0019] Explanation of the labels in the diagram: 1. Optical bench; 11. First slider; 12. Second slider; 13. Third slider; 14. Fourth slider; 15. Protective shell; 16. Protective frame; 2. Light source; 3. Arc block; 31. Variable aperture; 32. Iris paper; 4. Eyeball model; 41. Vitreous body; 42. First water lens; 43. First syringe; 5. Distance measuring module; 6. Sliding potentiometer; 7. Second water lens; 71. Second syringe. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] like Figure 1 , 4As shown, an adjustable eye imaging model includes an optical bench 1, on which a light source 2, an eye model 4, and a data acquisition device are mounted. The optical bench 1 has, from front to back, a first slider 11, a second slider 12, a third slider 13, and a fourth slider 14. The light source 2 is an F-type light source and is fixed to the first slider 11. The eye model 4 is fixed to the third slider 13. The eye model 4 includes a vitreous body 41, a first water lens 42 fixed to the vitreous body 41, and a first syringe 43 connected to the first water lens 42. The vitreous body 41 has an internal cavity, and its front end has an opening communicating with the cavity. The first water lens 42 is connected by hot melt adhesive. The gun is fixed at the opening of the glass body 41. A circular piece of paper is provided on the rear surface of the glass body 41 to simulate the retina. A water-stop clamp is provided between the first syringe 43 and the first water lens 42. The syringe barrel of the first syringe 43 is fixed on the optical bench 1, and the plunger of the first syringe 43 is fixed on the fourth slider 14. The data acquisition device includes a data acquisition unit, a sliding potentiometer 6, a ranging module 5, and a data processor. The data acquisition unit is electrically connected to the sliding potentiometer 6, the ranging module 5, and the data processor. The data acquisition unit uses an Arduino motherboard, and the data processor is a computer. The ranging module 5 is a distance sensor and is located on the first water lens. Directly below 42, making data measurement more convenient; the brush head of the sliding potentiometer 6 is fixedly connected to the fourth slider 14; the optical bench 1 is equipped with a protective shell 15 for protecting the data acquisition device and a protective frame 16 for protecting the sliding potentiometer 6, and the protective shell 15 and the protective frame 16 are respectively fixed on the optical bench 1; at this time, this set of devices serves as the first experimental setup and can be used to investigate the relationship between the object distance and the curvature of the lens. The operation method is as follows: move the light source 2 to the 0 scale of the optical bench 1, and gradually move it closer to the eyeball model 4. Each time it moves, adjust the fourth slider 14. The fourth slider 14 drives the push rod of the first syringe 43 and the brush head of the sliding potentiometer 6. The system moves and adjusts the amount of water injected into the first water lens 42 to simulate the adjustment of the lens curvature until the image of the F-light source on the circular paper becomes clear. The sliding potentiometer 6 transmits the data to the data acquisition unit and data processor for recording. The ranging module 5 transmits the position of the light source 2 to the data acquisition unit and data processor for recording. The data processor generates a scatter plot online and establishes a mathematical model to intuitively simulate the relationship between the object distance and the change in lens curvature. This explains that the closer the object is, the greater the curvature of the lens. Therefore, improper use of the eyes for a long time may damage the structure of the eyeball. This guides students to pay attention to their own eye habits, helps them develop good living habits, and establishes a healthy concept of life.

[0022] like Figure 2 , 5As shown, based on the first experimental setup, a variable aperture 31, an arc-shaped block 3, and iris paper 32 are added to the second slider 12, thus creating a second experimental setup capable of simulating the normal imaging process and adjustment mechanism of the eyeball. The slider of the variable aperture 31 is fixed to the second slider 12. The arc-shaped block 3 is a transparent block to simulate the cornea, the iris paper 32 is a patterned piece of paper to simulate the iris, and the variable aperture 31 simulates the adjustment of the pupil. The arc-shaped block 3 is connected to the iris paper 32 and the variable aperture 31 in sequence using a hot glue gun. The iris paper 32 and the variable aperture 31 are located inside the arc-shaped block 3, and the iris paper 32 is located between the variable aperture 31 and the arc-shaped block 3.

[0023] The second experimental setup is operated as follows: Turn on the light source 2, fix the eye model 4 at the 70cm mark on the optical bench 1, adjust the variable aperture 31 to its largest position, open the water stop clamp, and adjust the fourth slider 14 to gradually increase the water volume in the first water lens 42, forming a certain curvature until a clear image is formed on the circular paper. This demonstrates the light transmission path for eye imaging: external light – cornea – pupil – lens – vitreous body 41 – retina. Rotating the variable aperture 31 decreases the aperture, darkening the image on the circular paper, and vice versa, simulating the effect of pupil size on eye imaging. Moving the first slider 11 closer to the eye model 4 changes the distance between the light source 2 and the eye model 4, blurring the image on the retina. Increasing the water volume in the first syringe 43 increases the curvature of the water lens until the image becomes clear again, simulating the adjustment of the lens when seeing distant and near objects. The operator can record data and generate graphs using the data processing device for a more intuitive understanding of the experimental results.

[0024] like Figure 3 As shown, based on the first set of experimental devices, a second water lens 7 and a second syringe 71 connected to the second water lens 7 are added to the second slider 12 to form a third set of experimental devices that can simulate the formation and correction of myopia.

[0025] The operation method of the third experimental setup is as follows: Adjust the first water lens 42 so that its curvature is too large, causing the image on the circular paper to become blurry, simulating the formation of myopia; adjust the second syringe 71 so that the curvature of the second water lens 7 is reduced, forming a concave lens, until the image on the circular paper becomes clear again, simulating the correction of myopia. Operators can record data and generate graphs through the data processing device to more intuitively understand the experimental results.

[0026] This invention allows students to gain a clearer understanding of the principles of eye imaging and the prevention, formation, and correction of myopia through three sets of experiments. The experimental operation is simple and uncomplicated, facilitating classroom operation. One set of experimental equipment can conduct three sets of experiments, making it multi-functional, saving resources, and maximizing efficiency. The sliding potentiometer 6 records the feed amount of the first syringe 43, the ranging module 5 records the position of the light source 2, and the data acquisition device and data processor process the data to generate scatter plots online and establish mathematical models, making the exploration process visual, intuitive, quantitative, and information-based.

Claims

1. An adjustable eyeball imaging model, comprising an optical bench, characterized in that: The optical bench is equipped with a light source, an eye model, and a data acquisition device. The light source is slidably connected to the optical bench. The eye model is positioned in front of the direction of light irradiation from the light source. The eye model includes a vitreous body, a first water lens fixed to the vitreous body, and a first syringe connected to the first water lens. The syringe barrel is fixed to the optical bench, and the plunger of the first syringe is slidably connected to the optical bench. The data acquisition device includes a data acquisition unit, a sliding potentiometer, a ranging module, and a data processor. The data acquisition unit is electrically connected to the sliding potentiometer, the ranging module, and the data processor, respectively. The brush head of the sliding potentiometer is fixedly connected to the plunger of the first syringe.

2. The adjustable eye imaging model according to claim 1, characterized in that: The glass body has a cavity inside, and the front end of the glass body has an opening that connects to the cavity. The first water lens is fixed at the opening, the ranging module is located directly below the first water lens, and a circular paper is provided on the rear end surface of the glass body.

3. The adjustable eye imaging model according to claim 1, characterized in that: The optical bench is provided with a first slider, a second slider, a third slider and a fourth slider in sequence from front to back. The light source is fixed on the first slider, the glass body is fixed on the third slider, and the plunger of the first syringe and the brush head of the sliding potentiometer are fixed on the fourth slider.

4. The adjustable eye imaging model according to claim 3, characterized in that: The second slider is provided with a variable aperture and an arc-shaped block. The variable aperture is located on the inner wall of the arc-shaped block. The slider of the variable aperture is fixedly connected to the second slider. The arc-shaped block is a transparent block. Iris paper is provided between the arc-shaped block and the variable aperture.

5. The adjustable eye imaging model according to claim 3, characterized in that: The second slider is provided with a second water lens that is fixedly connected to it, and the second water lens is connected to the second syringe.

6. The adjustable eye imaging model according to claim 1, characterized in that: The optical bench is provided with a protective shell and a protective frame that are fixedly connected to it. The data acquisition device is located inside the protective shell, and the sliding potentiometer is located on the protective frame.

7. The adjustable eye imaging model according to claim 1, characterized in that: The ranging module is located at the bottom of the eyeball model.

8. The adjustable eye imaging model according to claim 1, characterized in that: A water-stopping clamp is provided between the first syringe and the first water lens.

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