Analog simulation device for demonstrating normality, myopia and correction of eyes

Abstract

The utility model relates to the technical field of simulation demonstration devices, in particular to an analogue simulation device for demonstrating normality, myopia and correction of eyes. The display stand comprises a display stand body. A light source lamp box, a convex lens assembly and a simulation eyeball are sequentially arranged on the display table along an imaging path, the convex lens assembly comprises a cornea convex lens connected with a simulation cornea of the simulation eyeball, and the convex lens assembly further comprises a crystalline lens convex lens serving as a crystalline lens of the simulation eyeball. A retina imaging plate capable of being used as a retina is arranged in the simulation eyeball, the simulation eyeball is made of a flexible material capable of being deformed under stress, and the crystalline lens convex lens and the cornea convex lens can be slidably adjusted along the imaging path so as to drive the simulation eyeball and the simulation cornea to deform to simulate myopia causes. According to the utility model, the internal structure change of the eyes under different myopia causes can be simulated, and the simulation display effect of the device is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of simulation demonstration devices, in particular to a simulation device for demonstrating normal eyes, myopia and correction. Background Art

[0002] With the increasing number of myopic people and the rising proportion of severe myopia, people have become fully aware of the importance of vision health.

[0003] In order to let people feel the changes, principles and processes between normal and myopia more intuitively, most of the existing demonstration devices are as described in the text of the Chinese patent publication number CN214541273U, which is called an eyeball model and a vision correction demonstrator. A transparent ball is provided to imitate the eyeball, and a correction component is provided for correcting the imaging of the projection screen in the transparent ball. The refractive index of the correction component is changed by the liquid volume in the correction component to achieve the demonstration of vision correction. Although this type of demonstration device also uses a transparent ball similar to the eyeball to simulate the eyeball, in actual implementation, it only demonstrates the imaging of the simulated retina in the simulated eyeball in combination with a lens structure that can change the refractive index, that is, to demonstrate the principle of myopia. But in fact, under different causes of myopia, the shape of the eyeball, the state of the cornea, etc. often have different changes. Obviously, it is difficult for the existing demonstration device to simulate the changes of the eye in the myopic state, and there is a problem of poor simulation display effect, so it is urgent to solve it. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a simulation device for demonstrating normal eyes, myopia and correction, which can simulate the changes in the internal structure of the eyes under different causes of myopia, effectively improving the simulation display effect of the device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A simulation device for demonstrating normal eyes, myopia and correction, comprising a display stand; on the display stand, a light source light box, a convex lens assembly and a simulated eyeball are arranged in sequence along an imaging path, the convex lens assembly comprises a corneal convex lens connected to a simulated cornea of ​​the simulated eyeball, the convex lens assembly also comprises a crystalline convex lens as a crystalline lens of the simulated eyeball, a retinal imaging plate which can serve as a retina is arranged in the simulated eyeball, and the simulated eyeball is made of a flexible material which can be deformed under force, and the crystalline convex lens and the corneal convex lens can both be slidably adjusted along the imaging path to drive the simulated eyeball and the simulated cornea to deform and simulate the cause of myopia.

[0007] As a further solution of the utility model: the display stand is provided with a transverse track arranged along the imaging path, a first transverse power mechanism connected to the corneal convex lens moves on the transverse track, and a second transverse power mechanism connected to the lens convex lens also moves on the transverse track.

[0008] As a further solution of the utility model: the crystalline lens comprises a thick crystalline lens and a thin crystalline lens which can be moved to the imaging path respectively to simulate the replacement of the crystalline lens for correcting myopia.

[0009] As a further solution of the utility model: the second transverse power mechanism is installed with a longitudinal track which is perpendicular to the transverse track, and a longitudinal power mechanism moves on the longitudinal track. The longitudinal power mechanism is provided with a first connecting table and a second connecting table which are spaced apart along the length direction of the longitudinal track, and the first connecting table and the second connecting table are fixedly connected to the thick lens convex lens and the thin lens convex lens respectively.

[0010] As a further solution of the utility model: a simulated iris fixed to the simulated eyeball is arranged between the corneal convex lens and the lens convex lens.

[0011] As a further solution of the utility model: concave glasses are arranged on the imaging path between the light source light box and the convex lens assembly, the concave glasses are driven by a glasses power mechanism, and can movably offset the imaging path to simulate glasses to correct myopia.

[0012] As a further solution of the utility model: the light source box includes an illumination light source and a laser light source, the illumination light source is used for the light source box itself to emit light; the laser light source emits laser toward the retinal imaging plate along the imaging path.

[0013] As a further solution of the utility model: a smoke generator is installed in the display stand, and the smoke generator discharges smoke to the imaging path through the smoke exhaust hole on the display stand.

[0014] As a further solution of the utility model: a protective cover is arranged on the outer periphery of the display stand, and the protective cover is a top-opening structure.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. When the corneal convex lens slides toward the side away from the crystalline lens convex lens, the simulated cornea of ​​the simulated eyeball is stretched synchronously, thereby increasing the refractive performance caused by the increased curvature of the simulated cornea, and eventually leading to myopia. During the simulation correction, the corneal convex lens moves toward the crystalline lens convex lens to simulate the correction of myopia by laser thinning the cornea. Both the crystalline lens convex lens and the corneal convex lens move toward the light source light box, which will pull the simulated eyeball to deform as a whole, that is, pull the simulated eyeball from the approximate center of the sphere to an approximate elliptical shape, thereby simulating the tension of the crystalline muscle when it contracts. This tension can flatten the eyeball, causing the axial length of the simulated eyeball to increase, resulting in myopia, and ultimately effectively improving the experience of the participants.

[0017] 2. The movement paths of the first transverse power mechanism and the second transverse power mechanism are positioned by the transverse track, and the corneal convex lens 41 and the lens convex lens can be driven independently by the first transverse power mechanism and the second transverse power mechanism.

[0018] 3. The lens convex lens includes a thick lens convex lens and a thin lens convex lens that can be moved to the imaging path respectively to simulate another myopia correction method, that is, replacing the lens to correct myopia. The thick lens convex lens simulates the thickening of the lens. When the lens thickens and causes myopia with increased refractive power, the thin lens convex lens is replaced to simulate the correction process of myopia in lens surgery.

[0019] 4. The thick lens convex lens and the thin lens convex lens are driven to slide perpendicular to the imaging path by the longitudinal power mechanism on the longitudinal track, so as to move the thick lens convex lens and the thin lens convex lens to the imaging path respectively.

[0020] 5. A simulated iris fixed to the simulated eyeball is arranged between the corneal convex lens and the lens convex lens, which further simulates the structure of the simulated eyeball and makes the simulated eyeball more vivid.

[0021] 6. Concave glasses are arranged on the imaging path between the light source light box and the convex lens assembly. The concave glasses are driven by a glasses power mechanism and can flexibly offset the imaging path to simulate the situation of wearing glasses to correct myopia.

[0022] 7. The source light box includes an illumination light source and a laser light source. The illumination light source is used to emit light from the light source light box itself, that is, to simulate an object reflecting the illumination light to the eye under the irradiation of light, so as to realize imaging on the eye. The illumination light source itself can increase the brightness of the light source light box, so that the shape of the light source light box can be imaged on the retinal imaging plate; the laser light source emits laser toward the retinal imaging plate along the imaging path, and the laser can be used to understand the refraction direction of light when it passes through the convex lens assembly alone or through the concave glasses and the convex lens assembly at the same time, so as to understand the reasons for clear and blurred imaging on the retinal imaging plate.

[0023] 8. A smoke generator is installed in the display stand, and the smoke generator discharges smoke to the imaging path through the smoke exhaust hole on the display stand, so that the direction of the laser is easier to be captured by sight.

[0024] 9. A protective cover is provided on the outer periphery of the display stand. The protective cover has a top-opening structure to prevent the smoke from being blown away by wind from the side. At the same time, it also prevents viewers from putting their hands into the top of the display stand and being scratched by the movement of power components such as the first transverse power mechanism and the second transverse power mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model.

[0026] Figure 2 It is a schematic structural diagram of the detailed parts of the display table in the utility model.

[0027] Figure 3 It is a schematic diagram of the top view structure of the display stand in the utility model.

[0028] Figure 4 It is a schematic diagram of the top structure of the first lateral power mechanism and the second lateral power mechanism in the utility model.

[0029] In the figure: 10, display stand; 11, protective cover; 12, smoke exhaust hole; 20, light source box; 21, lighting source; 22, laser light source; 30, concave glasses; 40, convex lens assembly; 41, corneal convex lens; 42, lens convex lens; 421, thick lens convex lens; 422, thin lens convex lens; 50, simulated eyeball; 51, simulated cornea; 52, simulated iris; 60, retinal imaging plate; 70, glasses power mechanism; 81, transverse track; 82, first transverse power mechanism; 83, second transverse power mechanism; 831, longitudinal track; 84, longitudinal power mechanism; 841, first connecting table; 842, second connecting table; 90, smoke generator. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] For ease of understanding, the specific structure and working mode of the utility model are further described below in conjunction with the accompanying drawings:

[0032] The specific structure of the utility model refers to Figure 1-4 As shown, its main structure includes a display stand 10, a light source light box 20 arranged on the display stand 10, and a simulation demonstration component for simulating eye imaging. Specifically, a horizontal straight line parallel to the length direction of the table surface of the display stand 10 is used as an imaging path, and a light source light box 20, a convex lens assembly 40, and a simulated eyeball 50 are arranged in sequence along the imaging path. Among them, the convex lens assembly 40 includes a corneal convex lens 41 connected to a simulated cornea 51 of the simulated eyeball 50, and the convex lens assembly 40 also includes a lens convex lens 42 as a lens of the simulated eyeball 50, so as to simulate the cornea and lens refraction in the simulated eyeball. In addition, a retinal imaging plate 60 as a retina is provided in the simulated eyeball 50. The simulated eyeball 50 is a flexible material that can be deformed by force. The lens convex lens 42 and the corneal convex lens 41 can both be slid and adjusted along the imaging path to drive the simulated eyeball 50 and the simulated cornea 51 to deform to simulate the structural state under different causes of myopia. When used specifically, the following two myopia conditions can be simulated:

[0033] 1. First, adjust the corneal convex lens 41 and the crystalline lens convex lens 42 to the predetermined position so that the retinal imaging plate 60 can image normally, simulating the state of the eyeball under normal eye conditions. After that, slide the corneal convex lens 41 toward the side away from the crystalline lens convex lens 42, driving the simulated cornea 51 of the simulated eyeball 50 to stretch synchronously, thereby simulating the increase in refractive performance caused by the increase in the curvature of the cornea, and finally causing myopia. During the simulation correction, the corneal convex lens 41 moves toward the crystalline lens convex lens 42 to simulate the correction of myopia by thinning the cornea with laser.

[0034] Second, first adjust the corneal convex lens 41 and the lens convex lens 42 to the predetermined position so that the retinal imaging plate 60 can form a normal image and simulate the state of the eyeball under normal eye conditions. After that, the lens convex lens 42 and the corneal convex lens 41 are moved toward the light source light box 20, which will pull the simulated eyeball 50 to deform as a whole, that is, pull the simulated eyeball 50 from the approximate center of the sphere to a nearly elliptical shape, thereby simulating the tension of the lens muscle when it contracts. The tension can flatten the eyeball, so that the axial length of the simulated eyeball 50 becomes larger, causing myopia.

[0035] Specifically, Figure 2 As shown, the display stand 10 is provided with a transverse track 81 arranged along the imaging path, and a first transverse power mechanism 82 connected to the corneal convex lens 41 moves on the transverse track 81, and a second transverse power mechanism 83 connected to the crystalline lens 42 also moves on the transverse track 81. The movement paths of the first transverse power mechanism 82 and the second transverse power mechanism 83 are positioned by the transverse track 81, and the corneal convex lens 41 and the crystalline lens convex lens 42 can be driven independently by the first transverse power mechanism 82 and the second transverse power mechanism 83, respectively. Specifically, when the first transverse power mechanism 82 and the second transverse power mechanism 83 are implemented, a power mechanism that performs linear motion, such as a linear telescopic rod, a linear gear rack structure, or a screw slider mechanism, can be used.

[0036] Furthermore, in order to further increase the simulation demonstration effect of this demonstration device, Figure 3 As shown, the lens convex lens 42 includes a thick lens convex lens 421 and a thin lens convex lens 422 that can be moved to the imaging path respectively to simulate another myopia correction method, that is, replacing the lens to correct myopia. The thick lens convex lens 421 simulates the thickening of the lens. When the lens thickens and causes myopia with increased refractive power, the thin lens convex lens 422 is replaced to simulate the correction process of myopia in lens surgery.

[0037] Specifically, Figure 2 and Figure 4As shown, the second transverse power mechanism 83 is equipped with a longitudinal track 831 which is perpendicular to the transverse track 81, and a longitudinal power mechanism 84 moves on the longitudinal track 831. The longitudinal power mechanism 84 is provided with a first connecting table 841 and a second connecting table 842 which are spaced apart along the length direction of the longitudinal track 831; the first connecting table 841 and the second connecting table 842 are respectively fixedly connected to the thick lens convex lens 421 and the thin lens convex lens 422. The longitudinal power mechanism 84 slides on the longitudinal track 831, and the thick lens convex lens 421 and the thin lens convex lens 422 are driven to slide perpendicular to the imaging path by the longitudinal power mechanism 84, so as to realize that the thick lens convex lens 421 and the thin lens convex lens 422 are respectively moved to the imaging path. In specific implementation, the longitudinal power mechanism 84 can adopt a linear telescopic rod or a linear gear rack structure. In addition, in actual implementation, a rotary power mechanism that performs rotary motion around an axis parallel to the imaging path can be set on the second lateral power mechanism 83. The thick lens convex lens 421 and the thin lens convex lens 422 are circumferentially spaced apart on the periphery of the rotary power mechanism. The thick lens convex lens 421 and the thin lens convex lens 422 are swung by the rotary power mechanism, so that the thick lens convex lens 421 and the thin lens convex lens 422 are respectively moved to the imaging path.

[0038] Further, such as Figure 2 As shown, a simulated iris 52 fixed to the simulated eyeball 50 is arranged between the corneal convex lens 41 and the lens convex lens 42, which further simulates the structure of the simulated eyeball 50 and makes the simulated eyeball 50 more vivid.

[0039] On the basis of the above, if Figure 2 As shown, concave glasses 30 are arranged on the imaging path between the light source light box 20 and the convex lens assembly 40. The concave glasses 30 are driven by a glasses power mechanism 70 and can flexibly offset the imaging path to simulate the situation of wearing glasses to correct myopia.

[0040] On the basis of the above, if Figure 2 As shown, the light source box 20 includes an illumination light source 21 and a laser light source 22. The illumination light source 21 is used for the light source box 20 to emit light itself, that is, to simulate an object reflecting the illumination light to the eye under the irradiation of light, so as to realize imaging on the eye. The illumination light source 21 can increase the brightness of the light source box 20 by emitting light itself, so that the shape of the light source box 20 can be imaged on the retinal imaging plate 60; the laser light source 22 emits laser toward the retinal imaging plate 60 along the imaging path, and the refraction direction of the light when passing through the convex lens assembly 40 alone or passing through the concave glasses 30 and the convex lens assembly 40 at the same time can be understood through the laser, so as to understand the reasons for clear imaging and blurred imaging on the retinal imaging plate 60.

[0041] In addition, in order to further see the direction of the laser emitted by the laser light source 22, as shown in FIG. Figure 1 As shown, a smoke generator 90 is installed in the display stand 10. The smoke generator 90 is mounted on the display stand 10. Figure 3 The smoke exhaust hole 12 shown discharges smoke into the imaging path, thereby making the direction of the laser easier to capture by sight.

[0042] Further, such as Figure 1 As shown, a protective cover 11 is provided on the outer periphery of the display stand 10. The protective cover 11 is a top-opening structure to prevent the smoke from being blown away by wind from the side. At the same time, it also prevents viewers from putting their hands into the top of the display stand 10 and being scratched by the movement of power components such as the first transverse power mechanism 82 and the second transverse power mechanism 83.

[0043] Of course, for those skilled in the art, the present invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0045] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. A simulation device for demonstrating normal, myopic and corrected eyes, characterized in that: The invention comprises a display stand (10); on the display stand (10), a light source light box (20), a convex lens assembly (40) and a simulated eyeball (50) are arranged in sequence along an imaging path; the convex lens assembly (40) comprises a corneal convex lens (41) connected to a simulated cornea (51) of the simulated eyeball (50); the convex lens assembly (40) further comprises a crystalline convex lens (42) as a crystalline lens of the simulated eyeball (50); a retinal imaging plate (60) which can serve as a retina is arranged in the simulated eyeball (50); the simulated eyeball (50) is made of a flexible material which can be deformed under force; the crystalline convex lens (42) and the corneal convex lens (41) can both be slidably adjusted along the imaging path to drive the simulated eyeball (50) and the simulated cornea (51) to deform to simulate the structural states under different myopia causes.

2. A simulation device for demonstrating normal, myopic and corrected eyes according to claim 1, characterized in that: The display stand (10) is provided with a transverse track (81) arranged along the imaging path, a first transverse power mechanism (82) connected to the corneal convex lens (41) moves on the transverse track (81), and a second transverse power mechanism (83) connected to the crystalline lens convex lens (42) also moves on the transverse track (81).

3. A simulation device for demonstrating normal, myopic and corrected eyes according to claim 2, characterized in that: The crystalline lens (42) comprises a thick crystalline lens (421) and a thin crystalline lens (422) which can be respectively moved to an imaging path to simulate replacement of the crystalline lens for correcting myopia.

4. A simulation device for demonstrating normal, myopic and corrected eyes according to claim 3, characterized in that: The second transverse power mechanism (83) is provided with a longitudinal track (831) which is perpendicular to the transverse track (81); a longitudinal power mechanism (84) moves on the longitudinal track (831); the longitudinal power mechanism (84) is provided with a first connecting table (841) and a second connecting table (842) which are spaced apart along the length direction of the longitudinal track (831); the first connecting table (841) and the second connecting table (842) are respectively fixedly connected to the thick lens convex lens (421) and the thin lens convex lens (422).

5. A simulation device for demonstrating normal, myopic and corrected eyes according to any one of claims 1 to 4, characterized in that: A simulated iris (52) fixed to the simulated eyeball (50) is arranged between the corneal convex lens (41) and the crystalline lens convex lens (42).

6. A simulation device for demonstrating normal, myopic and corrected eyes according to any one of claims 1 to 4, characterized in that: Concave glasses (30) are arranged on the imaging path between the light source light box (20) and the convex lens assembly (40); the concave glasses (30) are driven by a glasses power mechanism (70) and can be movably offset from the imaging path to simulate glasses for correcting myopia.

7. A simulation device for demonstrating normal, myopic and corrected eyes according to any one of claims 1 to 4, characterized in that: The light source light box (20) comprises an illumination light source (21) and a laser light source (22); the illumination light source (21) is used for the light source light box (20) to emit light itself; and the laser light source (22) emits laser light toward the retinal imaging plate (60) along the imaging path.

8. A simulation device for demonstrating normal, myopic and corrected eyes according to any one of claims 1 to 4, characterized in that: A smoke generator (90) is installed in the display stand (10), and the smoke generator (90) discharges smoke toward the imaging path through a smoke discharge hole (12) on the display stand (10).

9. A simulation device for demonstrating normal, myopic and corrected eyes according to claim 8, characterized in that: A protective cover (11) is provided on the outer periphery of the display stand (10), and the protective cover (11) is a top-opening structure.

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