Retropia science popularization simulation experience device based on eye vision light principle

Abstract

The invention relates to a science popularization simulation experience device for ametropia based on an eye vision light principle. The science popularization simulation experience device comprises an image display and shooting component, a simulation crystalline lens and correction lens conversion system and a simulation retina transmission system, wherein the simulation crystalline lens and correction lens conversion system comprises a lens rotation structure, a motor driving structure and a first infrared detection structure; the simulated retina transmission system comprises a movable sliding block (4), a ball screw transmission structure, a simulated retina structure and a second infrared detection structure; the retina simulating structure is fixed on the movable sliding block (4), and the movable sliding block (4) enables the retina simulating structure to move left and right along with the movable sliding block (4) through a ball screw transmission structure; the simulated retina structure comprises a simulated retina supporting plate (3), a simulated retina fixing frame (5), an adjustable fixing groove (6), a retina camera (8) and a simulated retina (37).

Description

Technical Field

[0001] The present invention relates to the field of ametropia popular science simulation devices, and in particular to an optical principle simulation demonstration device for myopia, hyperopia and astigmatism; Background Art

[0002] The eyes are the windows of the soul, and healthy eyes are closely related to life and work; ametropia is the most common cause of vision decline in the human eye, and the most common ametropia is myopia; myopia is a global public health problem, especially high myopia, which not only affects normal study and life, but also increases the risk of many fundus diseases, such as cataracts, glaucoma, macular degeneration and retinal detachment; therefore, popular science publicity activities on the principles of ametropia such as myopia contribute to promoting the whole society's attention to the prevention and control of eye diseases and preventing the occurrence of eye diseases, and have important social significance;

[0003] The visual impairments caused by high myopia and common ametropia cannot be ignored. There is an urgent need in society for a human eye ametropia simulation experience device that can simulate the visual effects of different types (including myopia, hyperopia, astigmatism) and different degrees (such as low myopia, moderate myopia, high myopia) of ametropia, and simulate the visual effects of optical correction of ametropia and inappropriate correction; through the display of physical objects and personal experience, people can truly understand the visual impairments caused by ametropia, enhance the public's awareness of eye health, improve people's behaviors and attitudes towards ametropia, and reduce the visual impairments caused by ametropia;

[0004] Currently, for the devices for popular science display of optometry principles, most of them only show the principles of myopia, and usually can only simulate and display the myopia light path, and cannot actually display the imaging of objects; Summary of the Invention

[0005] The purpose of the present invention is to provide an ametropia popular science simulation experience device that can comprehensively display the imaging of the principles of myopia, hyperopia and astigmatism, and allow users to obtain a real visual experience of myopia, hyperopia and astigmatism; the technical solution is as follows:

[0006] An ametropia popular science simulation experience device based on optometry principles includes three parts: an image display and shooting component, a simulated lens and corrective lens conversion system, and a simulated retina drive system; among them,

[0007] The simulated lens and corrective lens conversion system includes a lens rotation structure, a motor drive structure and a first infrared detection structure;

[0008] The lens rotation structure includes a drive shaft fixing block 17, a drive shaft fixing plate 33, a drive shaft 47, a corrective lens conversion driven wheel 22, an artificial lens conversion driven wheel 23, a corrective lens conversion disc 26, and an artificial lens disc 29; both sides of the drive shaft 47 are fixed to the drive shaft fixing block 17 and the drive shaft fixing plate 33 respectively; the corrective lens conversion driven wheel 22 and the corrective lens conversion disc 26 are fixed to the drive shaft 47, and the three are interconnected and rotate simultaneously;

[0009] The artificial lens conversion driven wheel 23 is fixedly connected to the artificial lens disc 29, and the two pass through the drive shaft 47 and rotate around it; there are four artificial lens mounting holes 30 on the artificial lens disc 29, two of which are respectively installed with lenses simulating a normal human eye and a human eye with astigmatism, and the other two are temporarily vacant. An artificial lens conversion infrared passing hole 31 is provided outside each artificial lens mounting hole 30. An additional artificial lens conversion initial infrared passing hole 59 is provided outside the artificial lens mounting hole 30 where the lens simulating a normal human eye is installed, for distinction from other positions;

[0010] There are six corrective lens mounting holes 24 on the corrective lens conversion disc 26 for fixing corrective lenses. One of the corrective lens mounting holes 24 does not install a corrective lens, and the other five are respectively installed with lenses for correcting small-angle myopia, large-angle myopia, small-angle hyperopia, large-angle hyperopia, and astigmatism. A corrective lens conversion infrared passing hole 25 is provided outside each corrective lens mounting hole 24. An additional corrective lens conversion initial infrared passing hole 60 is provided outside the corrective lens conversion infrared passing hole 25 where no corrective lens is installed, for distinction from other positions;

[0011] The motor drive structure includes a corrective lens conversion drive motor 18, a corrective lens conversion drive belt 20, a corrective lens conversion driving wheel 21, a corrective lens conversion driven wheel 22, a simulated lens conversion driven wheel 23, a simulated lens conversion driving wheel 38, a simulated lens conversion drive belt 44, and a simulated lens conversion drive motor 45; the simulated lens conversion driving wheel 38 is driven by the simulated lens conversion drive motor 45, and the simulated lens conversion driving wheel 38 is connected to the simulated lens conversion driven wheel 23 through the simulated lens conversion drive belt 44, and the three are connected and driven by gears; the simulated lens conversion driven wheel 23 is fixedly connected to the simulated lens disc 29, and both are provided with through holes allowing the transmission shaft 47 to pass through. The simulated lens disc 29 rotates around the transmission shaft 47 driven by the simulated lens conversion drive motor 45; the corrective lens conversion driving wheel 21 is driven by the corrective lens conversion drive motor 18, and the corrective lens conversion driving wheel 21 is connected to the corrective lens conversion driven wheel 22 through the corrective lens conversion drive belt 20, and the three are connected and driven by gears. The corrective lens conversion drive motor 18 drives the corrective lens conversion disc 26 and the transmission shaft 47 to rotate together;

[0012] The simulated retina drive system includes a moving slider 4, a ball screw drive structure, a simulated retina structure, and a second infrared detection structure; the simulated retina structure is fixed on the moving slider 4, and the moving slider 4 enables the simulated retina structure to move left and right along with it through the ball screw drive structure;

[0013] The simulated retina structure includes a simulated retina support plate 3, a simulated retina fixing bracket 5, an adjustable fixing groove 6, a retina camera 8, and a simulated retina 37; the simulated retina support plate 3 is fixed on the moving slider 4, and the simulated retina fixing bracket 5 is fixed on the simulated retina support plate 3 through the adjustable fixing groove 6. The adjustable fixing groove 6 is used to adjust the left and right positions of the simulated retina fixing bracket 5; the simulated retina 37 is fixed on the simulated retina fixing bracket 5 and is used for imaging, serving as the function of the simulated retina; the retina camera 8 is used to photograph the imaging on the simulated retina 37.

[0014] Furthermore, the image display and shooting components include: an adjustable telescopic rod 34, a display screen bracket 35, a display screen 36, a face camera fixing bracket 9, and a face camera 10; the display screen 36 is fixed on the display screen bracket 35, and the display screen bracket 35 is fixed on the adjustable telescopic rod 34, and the two form a vertical angle. The adjustable telescopic rod 34 can adjust the length by stretching and contracting, thereby adjusting the position of the display screen; the display screen 36 is composed of an LED dot matrix and serves as the light source of the device; the face camera 10 is fixed through the face camera fixing bracket 9, and the face camera can adjust the pitch angle.

[0015] Further, the first infrared detection structure includes an upper corrective lens conversion infrared emitter 27, an upper corrective lens conversion infrared sensor 28, an upper simulated lens infrared sensor 32, a lower corrective lens conversion infrared emitter 39, a lower corrective lens conversion infrared sensor 40, a lower simulated lens infrared sensor 41, an upper simulated lens infrared emitter 42, a lower simulated lens infrared emitter 43, an upper simulated lens infrared sensor 32, a lower simulated lens infrared sensor 41, an upper simulated lens infrared emitter 42, and a lower simulated lens infrared emitter 43, which are respectively located on both sides of the simulated lens disc 29; the connection line between the centers of the upper simulated lens infrared sensor 32 and the upper simulated lens infrared emitter 42 is perpendicular to the vertical plane of the simulated lens disc 29, and the infrared light emitted by the upper simulated lens infrared emitter 42 can be received by the upper simulated lens infrared sensor 32 through the initial infrared passing hole 59 on the simulated lens disc 29; the connection line between the centers of the lower simulated lens infrared sensor 41 and the lower simulated lens infrared emitter 43 is perpendicular to the vertical plane of the simulated lens disc 29, and the infrared light emitted by the lower simulated lens infrared emitter 43 can be received by the lower simulated lens infrared sensor 41 through the infrared passing hole 31 on the simulated lens disc 29.

[0016] Further, the upper corrective lens conversion infrared emitter 27, the lower corrective lens conversion infrared emitter 39, the upper corrective lens conversion infrared sensor 28, and the lower corrective lens conversion infrared sensor 40 are respectively located on both sides of the corrective lens conversion disc 26; the connection line between the centers of the upper corrective lens conversion infrared emitter 27 and the upper corrective lens conversion infrared sensor 28 is perpendicular to the vertical plane of the corrective lens conversion disc 26, and the infrared light emitted by the upper corrective lens conversion infrared emitter 27 can be received by the upper corrective lens conversion infrared sensor 28 through the initial infrared passing hole 60 on the corrective lens conversion disc 26; the connection line between the centers of the lower corrective lens conversion infrared emitter 39 and the lower corrective lens conversion infrared sensor 40 is perpendicular to the vertical plane of the corrective lens conversion disc 26, and the infrared light emitted by the lower corrective lens conversion infrared emitter 39 can be received by the lower corrective lens conversion infrared sensor 40 through the infrared passing hole 25 on the corrective lens conversion disc 26.

[0017] Further, when the upper corrective lens conversion infrared sensor 28 and the lower corrective lens conversion infrared sensor 40 receive infrared light simultaneously, it is used to determine that the corrective lens mounting hole 24 on the corrective lens conversion disc 26 is in the initial position; when the lower corrective lens conversion infrared sensor 40 can receive infrared light while the upper corrective lens conversion infrared sensor 28 cannot receive infrared light, it is used to determine that the corrective lens mounting hole 24 here reaches the specified position.

[0018] Further, the second infrared detection structure includes a ball screw infrared emitter 14, a ball screw right limit infrared sensor 15, and a ball screw left limit infrared sensor 16; the ball screw infrared emitter 14 is fixed on the moving slider 4; the ball screw right limit infrared sensor 15 and the ball screw left limit infrared sensor 16 are fixed on the moving slide rail 55, and their positions on the moving slide rail 55 can be adjusted and re-fixed.

[0019] Further, when the moving slider 4 moves left to above the ball screw left limit infrared sensor 16, the infrared light emitted by the ball screw infrared emitter 14 can be received by the ball screw left limit infrared sensor 16, and when the moving slider 4 moves right to above the ball screw right limit infrared sensor 15, the infrared light emitted by the ball screw infrared emitter 14 can be received by the ball screw right limit infrared sensor 15.

[0020] Further, the ball screw transmission structure includes a ball screw drive motor 1, a right limit block 2, a moving slider 4, a left limit block 12, a moving shaft 13, a screw rotating shaft 54, and a moving slide rail 55; the ball screw drive motor 1 is connected to the screw rotating shaft 54 to drive its rotation; the screw rotating shaft 54 is fixedly connected to the moving slider 4, and the rotation of the screw rotating shaft 54 can be converted into the left and right movement of the moving slider 4; the moving shaft 13 is parallel to the screw rotating shaft 54 and passes through the moving slider 4 to guide the moving direction of the moving slider 4. Description of the Drawings

[0021] Figure 1 Overall structure diagram of the refractive error experience device proposed by the present invention

[0022] Figure 2 Front view of the refractive error experience device proposed by the present invention

[0023] Figure 3 Rear view of the refractive error experience device proposed by the present invention

[0024] Figure 4 Schematic diagram of the drive motor side of the simulated lens and corrective lens conversion system in the refractive error experience device proposed by the present invention

[0025] Figure 5 Schematic diagram of the simulated lens disc side of the lens rotation structure of the simulated lens and corrective lens conversion system in the refractive error experience device proposed by the present invention

[0026] Figure 6 Front view of the lens rotation structure of the simulated lens and corrective lens conversion system in the refractive error experience device proposed by the present invention

[0027] Figure 7Schematic diagram of the lens rotation structure correction lens conversion disc side of the simulated lens and correction lens conversion system in the refractive error experience device proposed by the present invention

[0028] Figure 8 Overall structure diagram of the simulated retina drive system in the refractive error experience device proposed by the present invention

[0029] Figure 9 Front view of the simulated retina drive system in the refractive error experience device proposed by the present invention

[0030] Figure 10 Top view of the simulated retina drive system in the refractive error experience device proposed by the present invention

[0031] Figure 11 Rear view of the simulated retina drive system in the refractive error experience device proposed by the present invention

[0032] Brief description of the drawings is as follows:

[0033] 1. Ball screw drive motor, 2. Right limit block, 3. Simulated retina support plate, 4. Moving slider, 5. Simulated retina fixing bracket, 6. Adjustable sliding fixing groove, 7. Camera fixing block, 8. Retina camera, 9. Face camera fixing bracket, 10. Face camera, 11. Simulated eyeball, 12. Left limit block, 13. Moving shaft, 14. Ball screw infrared emitter, 15. Ball screw right limit infrared sensor, 16. Ball screw left limit infrared sensor, 17. Transmission shaft fixing block, 18. Correction lens conversion drive motor, 19. Correction lens conversion drive motor fixing block, 20. Correction lens conversion drive belt, 21. Correction lens conversion driving pulley, 22. Correction lens conversion driven pulley, 23. Simulated lens conversion driven pulley, 24. Correction lens mounting hole, 25. Correction lens conversion infrared passing hole, 26. Correction lens conversion disc, 27. Correction lens conversion infrared emitter (upper), 28. Correction lens conversion infrared sensor (upper), 29. Simulated lens disc, 30. Simulated lens mounting hole, 31. Simulated lens conversion infrared passing hole, 32. Simulated lens infrared sensor (upper), 33. Transmission shaft fixing plate, 34. Adjustable telescopic rod, 35. Display screen bracket, 36. Display screen, 37. Simulated retina, 38. Simulated lens conversion driving pulley, 39. Correction lens conversion infrared emitter (lower), 40. Correction lens conversion infrared sensor (lower), 41. Simulated lens infrared sensor (lower), 42. Simulated lens infrared emitter (upper), 43. Simulated lens infrared emitter (lower), 44. Simulated lens conversion drive belt, 45. Simulated lens conversion drive motor, 46. Simulated lens conversion drive motor fixing block, 47. Transmission shaft, 48. Motor fixing block, 49. Correction lens conversion infrared sensor fixing block, 50. Simulated lens infrared sensor fixing block, 51. Simulated lens infrared emitter fixing block, 52. Infrared sensor fixing block, 53. Ball screw drive motor fixing plate, 54. Screw rotating shaft, 55. Moving slide rail, 56. Control box (motor driver, controller, power supply, voice module, etc.), 57. Heat dissipation holes, 58. Correction lens fixing holes, 59. Simulated lens conversion initial infrared passing hole, 60. Correction lens conversion initial infrared passing hole; Detailed implementation mode

[0034] The following will further elaborate on the present invention in conjunction with the accompanying drawings and embodiments; the specific implementation modes described herein are only used to explain the present invention and are not used to limit the protection scope of the present invention;

[0035] The main structure of this device can be divided into three parts according to its functional roles: image display and shooting components, simulated lens and correction lens conversion system, and simulated retina transmission system.

[0036] As Figure 1As shown, the image display and shooting components include: an adjustable telescopic rod 34, a display screen bracket 35, a display screen 36, a face camera fixing bracket 9, and a face camera 10; the display screen 36 is fixed on the display screen bracket 35, and the display screen bracket 35 is fixed on the adjustable telescopic rod 34, with the two forming a right angle. The adjustable telescopic rod 34 can adjust its length by stretching and contracting, thereby adjusting the position of the display screen; the display screen 36 is composed of an LED dot matrix and serves as the light source of the device; the face camera 10 is fixed through the face camera fixing bracket 9, and the face camera can adjust its pitch angle.

[0037] As Figure 1 , 2 , Figures 3, 4, and 8 show that the simulated lens and corrective lens conversion system includes: a drive shaft fixing block 17, a corrective lens conversion drive motor 18, a corrective lens conversion drive motor fixing block 19, a corrective lens conversion drive belt 20, a corrective lens conversion driving pulley 21, a corrective lens conversion driven pulley 22, a simulated lens conversion driving pulley 38, a simulated lens conversion driven pulley 23, a corrective lens mounting hole 24, a corrective lens conversion infrared passing hole 25, a corrective lens conversion disc 26, a corrective lens conversion infrared transmitter (upper) 27, a corrective lens conversion infrared transmitter (lower) 39, a corrective lens conversion infrared sensor (upper) 28, a corrective lens conversion infrared sensor (lower) 40, a simulated lens disc 29, a simulated lens mounting hole 30, a simulated lens conversion infrared passing hole 31, a simulated lens infrared sensor (upper) 32, a simulated lens infrared sensor (lower) 41, a drive shaft fixing plate 33, a simulated lens infrared transmitter (upper) 42, a simulated lens infrared transmitter (lower) 43, a simulated lens conversion drive belt 44, a simulated lens conversion drive motor 45, a simulated lens conversion drive motor fixing block 46, a drive shaft 47, a motor fixing block 48, a corrective lens conversion infrared sensor fixing block 49, a simulated lens infrared sensor fixing block 50, a simulated lens infrared transmitter fixing block 51, an infrared sensor fixing block 52, a corrective lens fixing hole 58, a simulated lens conversion initial infrared passing hole 59, and a corrective lens conversion initial infrared passing hole 60.

[0038] The simulated lens and corrective lens conversion system includes a lens rotation structure, a motor drive structure, and an infrared detection structure.

[0039] As Figure 3As shown in the figure, the lens rotation structure includes a drive shaft fixing block 17, a drive shaft fixing plate 33, a drive shaft 47, a corrective lens conversion driven wheel 22, an artificial lens conversion driven wheel 23, a corrective lens conversion disc 26, and an artificial lens disc 29. The two sides of the drive shaft 47 are respectively fixed on the drive shaft fixing block 17 and the drive shaft fixing plate 33. The corrective lens conversion driven wheel 22 and the corrective lens conversion disc 26 are fixed on the drive shaft 47, and the three are interconnected and rotate simultaneously. The artificial lens conversion driven wheel 23 is fixed on the artificial lens disc 29 by screws, and the two pass through the drive shaft 47 and rotate around it. As Figure 5 shown in the figure, there are 4 artificial lens mounting holes 30 on the artificial lens disc 29. Two of them are respectively installed with lenses simulating a normal human eye and a human eye with astigmatism. The other two are temporarily vacant for installing lenses simulating other eye conditions. There is an artificial lens conversion infrared passing hole 31 outside each artificial lens mounting hole 30. Among them, there will be an additional artificial lens conversion initial infrared passing hole 59 outside the artificial lens mounting hole 30 where the lens simulating a normal human eye is installed, for distinguishing from other positions. As Figure 7 shown in the figure, there are 6 corrective lens mounting holes 24 on the corrective lens conversion disc 26. The corrective lenses are fixed in the corrective lens mounting holes 24 by screws in the lens fixing holes 58. One of the corrective lens mounting holes 24 is not installed with a corrective lens, and the other five are respectively installed with lenses for correcting small-angle myopia, large-angle myopia, small-angle hyperopia, large-angle hyperopia, and astigmatism. There is a corrective lens conversion infrared passing hole 25 outside each corrective lens mounting hole 24. Among them, there will be an additional corrective lens conversion initial infrared passing hole 60 outside the corrective lens conversion infrared passing hole 25 where no corrective lens is installed, for distinguishing from other positions.

[0040] As Figure 4 and 8 shown in the figure, the motor drive structure includes a corrective lens conversion drive motor 18, a corrective lens conversion drive motor fixing block 19, a corrective lens conversion belt 20, a corrective lens conversion driving wheel 21, a corrective lens conversion driven wheel 22, an artificial lens conversion driven wheel 23, a corrective lens conversion disc 26, an artificial lens disc 29, an artificial lens conversion driving wheel 38, an artificial lens conversion belt 44, an artificial lens conversion drive motor 45, an artificial lens conversion drive motor fixing block 46, and a motor fixing block 48. As Figure 8 shown in the figure, the artificial lens conversion driving wheel 38 is fixed on the artificial lens conversion drive motor 45 by screws. As Figure 4As shown, the simulated lens conversion driving wheel 38 is connected to the simulated lens conversion driven wheel 23 through the simulated lens conversion transmission belt 44. The three are connected and driven through gears. The simulated lens conversion driven wheel 23 is fixed to the simulated lens disc 29 by screws. A transmission shaft 47 passes through the middle of the two. The simulated lens conversion driving motor 45 can drive the simulated lens disc 29 to rotate around the transmission shaft 47; As Figure 8 shown, the corrective lens conversion driving wheel 21 is fixed to the corrective lens conversion driving motor 18 by screws, as Figure 4 shown, the corrective lens conversion driving wheel 21 is connected to the corrective lens conversion driven wheel 22 through the corrective lens conversion transmission belt 20. The three are connected and driven through gears. The corrective lens conversion driven wheel 22 is fixed to the transmission shaft 47 by screws. The corrective lens conversion disc 26 is fixed to the transmission shaft 47 by screws. The corrective lens conversion driving motor 18 can drive the corrective lens conversion disc 26 and the transmission shaft 47 to rotate together.

[0041] As Figure 2 and 3 shown, the infrared detection structure includes the corrective lens conversion infrared emitter (upper) 27, the corrective lens conversion infrared sensor (upper) 28, the simulated lens infrared sensor (upper) 32, the corrective lens conversion infrared emitter (lower) 39, the corrective lens conversion infrared sensor (lower) 40, the simulated lens infrared sensor (lower) 41, the simulated lens infrared emitter (upper) 42, the simulated lens infrared emitter (lower) 43, the corrective lens conversion infrared sensor fixing block 49, the simulated lens infrared sensor fixing block 50, the simulated lens infrared emitter fixing block 51, and the infrared sensor fixing block 52; As Figure 3As shown, the simulated lens infrared sensor (upper) 32, the simulated lens infrared sensor (lower) 41, the simulated lens infrared emitter (upper) 42, and the simulated lens infrared emitter (lower) 43 are respectively located on both sides of the simulated lens disc 29; the line connecting the centers of the simulated lens infrared sensor (upper) 32 and the simulated lens infrared emitter (upper) 42 is perpendicular to the vertical plane of the simulated lens disc 29, and the infrared light emitted by the simulated lens infrared emitter (upper) 42 can be received by the simulated lens infrared sensor (upper) 32 through the simulated lens conversion initial infrared through hole 59 on the simulated lens disc 29; the line connecting the centers of the simulated lens infrared sensor (lower) 41 and the simulated lens infrared emitter (lower) 43 is perpendicular to the vertical plane of the simulated lens disc 29, and the infrared light emitted by the simulated lens infrared emitter (lower) 43 can be received by the simulated lens infrared sensor (lower) 41 through the simulated lens conversion infrared through hole 31 on the simulated lens disc 29; when the simulated lens infrared sensor (upper) 32 and the simulated lens infrared sensor (lower) 41 receive infrared light simultaneously, it is determined that the simulated lens mounting hole 30, which is used to install the lens simulating a normal human eye globe on the simulated lens disc 29, is at the lowest position. At other positions, there is only one simulated lens conversion infrared through hole 31, and the simulated lens infrared sensor (lower) 41 can receive infrared light while the simulated lens infrared sensor (upper) 32 cannot receive infrared light; such as Figure 2As shown in the figure, the correction lens conversion infrared emitter (upper) 27, the correction lens conversion infrared emitter (lower) 39, the correction lens conversion infrared sensor (upper) 28, and the correction lens conversion infrared sensor (lower) 40 are respectively located on both sides of the correction lens conversion disc 26; the line connecting the centers of the correction lens conversion infrared emitter (upper) 27 and the correction lens conversion infrared sensor (upper) 28 is perpendicular to the vertical plane of the correction lens conversion disc 26, and the infrared light emitted by the correction lens conversion infrared emitter (upper) 27 can be received by the correction lens conversion infrared sensor (upper) 28 through the correction lens conversion initial infrared passing hole 60 on the correction lens conversion disc 26; the line connecting the centers of the correction lens conversion infrared emitter (lower) 39 and the correction lens conversion infrared sensor (lower) 40 is perpendicular to the vertical plane of the correction lens conversion disc 26, and the infrared light emitted by the correction lens conversion infrared emitter (lower) 39 can be received by the correction lens conversion infrared sensor (lower) 40 through the correction lens conversion infrared passing hole 25 on the correction lens conversion disc 26; when the correction lens conversion infrared sensor (upper) 28 and the correction lens conversion infrared sensor (lower) 40 receive infrared light simultaneously, it is determined that the correction lens mounting hole 24 without the correction lens is located at the lowermost position of the correction lens conversion disc 26. At other positions, there is only one correction lens conversion infrared passing hole 25, and the correction lens conversion infrared sensor (lower) 40 can receive infrared light, while the correction lens conversion infrared sensor (upper) 28 cannot receive infrared light.

[0042] As Figure 8 shown in the figure, the simulated retina drive system includes: a ball screw drive motor 1, a right limit block 2, a simulated retina support plate 3, a moving slider 4, a simulated retina fixing bracket 5, an adjustable fixing groove 6, a camera fixing block 7, a retina camera 8, a left limit block 12, a moving shaft 13, a ball screw infrared emitter 14, a ball screw right limit infrared sensor 15, a ball screw left limit infrared sensor 16, a simulated retina 37, a ball screw drive motor fixing plate 53, a screw rotating shaft 54, and a moving slide rail 55; the simulated retina drive system can be divided into three parts, namely a ball screw drive structure, a simulated retina structure, and an infrared detection structure; the simulated retina structure is integrally mounted on the moving slider 4 and moves left and right with it; As Figure 8As shown in the figure, the ball screw drive structure includes a ball screw drive motor 1, a right limit block 2, a moving slider 4, a left limit block 12, a moving shaft 13, a ball screw drive motor fixing plate 53, a screw rod rotating shaft 54, and a moving slide rail 55; the ball screw drive motor 1 is connected to the screw rod rotating shaft 54 to drive its rotation; the screw rod rotating shaft 54 is threadedly connected to the moving slider 4, and the rotation of the screw rod rotating shaft 54 can be converted into the left and right movement of the moving slider 4; the moving shaft 13 passes through the moving slider 4 to guide the moving direction of the moving slider 4; the simulated retina structure includes a simulated retina support plate 3, a simulated retina fixing frame 5, an adjustable fixing groove 6, a camera fixing block 7, a retina camera 8, and a simulated retina 37; the simulated retina support plate 3 is fixed to the moving slider 4 with screws, the camera fixing block 7 is fixed to the simulated retina support plate 3 with screws, the simulated retina fixing frame 5 is fixed to the camera fixing block 7 through the adjustable fixing groove 6, the position of the simulated retina fixing frame 5 can be adjusted left and right, and the simulated retina 37 is fixed to the simulated retina fixing frame 5 for imaging, acting as the function of the simulated retina, and the retina camera 8 is fixed to the camera fixing block 7 for photographing the imaging on the simulated retina 37; the infrared detection structure includes a ball screw infrared emitter 14, a ball screw right limit infrared sensor 15, and a ball screw left limit infrared sensor 16; the ball screw infrared emitter 14 is fixed to the moving slider 4; the ball screw right limit infrared sensor 15 and the ball screw left limit infrared sensor 16 are fixed to the moving slide rail 55, and their positions on the moving slide rail 55 can be adjusted and refixed; when the moving slider 4 moves left to above the ball screw left limit infrared sensor 16, the infrared light emitted by the ball screw infrared emitter 14 can be received by the ball screw left limit infrared sensor 16, and when the moving slider 4 moves right to above the ball screw right limit infrared sensor 15, the infrared light emitted by the ball screw infrared emitter 14 can be received by the ball screw right limit infrared sensor 15.

[0043] The specific implementation manners will be described in detail below in conjunction with the schematic diagrams:

[0044] As Figure 1As shown in the figure, it is a schematic diagram of the overall structure of the refractive error experience device proposed by the present invention. In the normal working state, the display screen 36 and the simulated lens disc 29 are adjusted to the initially set distance. The simulated lens mounting hole 30 is installed with a convex lens for simulating the human eye globe. One of the simulated lens mounting holes 30 is installed with a convex lens to simulate a normal human eye globe, and other simulated lens mounting holes 30 can be installed with convex lenses for simulating other eye states as needed. In this embodiment, a convex lens for simulating an astigmatic eye is installed. One blank mounting hole is left in the correction lens mounting hole 24, and lenses for correcting eye states are installed at other positions. In this embodiment, lenses for correcting hyperopia, myopia, and astigmatism are installed; the light source emitted by the display screen passes through the simulated lens mounting hole 30 and the correction lens mounting hole 24 and forms an image on the simulated retina 37; the retina camera 8 captures the image on the simulated retina 37, and the face camera 10 captures the user's face.

[0045] After receiving the signal to start working, the device will perform initialization; first, the correction lens conversion drive motor 18 rotates, and the correction lens conversion driving wheel 21 rotates accordingly. The gear drives the correction lens conversion transmission belt 20 and the correction lens conversion driven wheel 22 to rotate. The transmission shaft 47 and the correction lens conversion disc 26 are fixed to the correction lens conversion driven wheel 22 and rotate accordingly. When the correction lens conversion disc 26 rotates to the blank correction lens mounting hole 24 facing the light source, the correction lens conversion infrared sensor (upper) 28 and the correction lens conversion infrared sensor (lower) 40 simultaneously receive infrared light through the two correction lens conversion infrared passing holes 25, and it is determined that this is the initial position, and the correction lens conversion drive motor 18 stops rotating; then, the simulated lens conversion drive motor 45 rotates, and the simulated lens conversion driving wheel 38 rotates accordingly. The gear drives the simulated lens conversion transmission belt 44 and the simulated lens conversion driven wheel 23 to rotate. The simulated lens disc 29 is fixed to the simulated lens conversion driven wheel 23 and rotates accordingly. When the simulated lens disc 29 rotates to the simulated lens mounting hole 30 with a normal human eye installed facing the light source, the simulated lens infrared sensor (upper) 32 and the simulated lens infrared sensor (lower) 41 simultaneously receive infrared light through the two simulated lens conversion infrared passing holes 31, and it is determined that this is the initial position, and the simulated lens conversion drive motor 45 stops rotating; finally, the ball screw drive motor 1 rotates, driving the screw rotating shaft 54 to rotate, driving the moving slider 4 to move leftward. When the ball screw left limit infrared sensor 16 receives the infrared light from the ball screw infrared emitter 14, it is determined that the left limit is reached, and this position is taken as the 0 position on the ball screw. Then the ball screw drive motor 1 rotates in the reverse direction, driving the moving slider 4 to move rightward. The number of rotations of the ball screw drive motor 1 is used to calculate the moving distance of the moving slider 4, and it stops at the normal imaging position of the normal human eye; at this time, a clear image is formed on the simulated retina 37.

[0046] When simulating the effects of myopia, hyperopia, and astigmatism, the imaging distance of the simulated retina 37 corresponding to different degrees of myopia or hyperopia is calculated according to the principle of optical imaging, and the corresponding myopia, hyperopia, and astigmatism correction lenses are selected and matched; when simulating the myopia effect, the correction lens conversion drive motor 18 drives the correction lens conversion disc 26 to rotate, and the correction lens mounting hole 24 is converted to the blank lens position. The simulated lens conversion drive motor 45 drives the simulated lens disc 29 to rotate, and the simulated lens mounting hole 30 is converted to the position of a normal human eye. The ball screw drive motor 1 drives the simulated retina 37 to move to the calculated myopia simulation position, and the simulated retina 37 forms a blurred myopic image; when simulating the hyperopia effect, the correction lens mounting hole 24 is converted to the blank lens position, the simulated lens mounting hole 30 is converted to the position of a normal human eye, the simulated retina 37 moves to the calculated hyperopia simulation position, and the simulated retina 37 forms a blurred hyperopic image; when simulating the astigmatism effect, the correction lens mounting hole 24 is converted to the blank lens position, the simulated lens mounting hole 30 is converted to the position of an astigmatic human eye, the simulated retina 37 moves to the calculated imaging position of a normal human eye, and the simulated retina 37 forms a blurred astigmatic image; when correcting the above myopia, hyperopia, and astigmatism effects, the correction lens conversion drive motor 18 drives the correction lens conversion disc 26 to rotate, the correction lens mounting hole 24 is converted to the corresponding correction lens position, and the simulated retina 37 forms a clear image; moreover, due to the blank lens being left, a manual fixing hole 58 is added at this position. On the one hand, the lens can be fixed and installed by screws, and on the other hand, it is also convenient for users to manually experience and try on lenses of different types and degrees to obtain an intuitive imaging effect of different correction forms.

[0047] The present invention can enable the public to intuitively feel the visual damage caused by refractive errors and effectively enhance the public's awareness of eye health; the device adopts structures such as ball screws and gear transmissions, and incorporates innovative points such as infrared sensors and double gear nesting, making the present invention highly reliable, and the entire device has good adaptability, compatibility, and simplicity; the detachable lens mounting hole design makes the device highly extensible and has a better experience; the present invention is easy to operate, has an intuitive effect, and has diverse functions, and can play an important role in popularizing public eye health knowledge.

Claims

1. A refractive error popular science simulation experience device based on the principle of ophthalmology, including three parts: image display and shooting components, simulated lens and corrective lens conversion system, and simulated retinal transmission system; among which, The simulated lens and corrective lens conversion system includes a lens rotation structure, a motor driving structure and a first infrared detection structure; The lens rotation structure comprises a transmission shaft fixing block (17), a transmission shaft fixing plate (33), a transmission shaft (47), a corrective lens conversion passive wheel (22), a simulated lens conversion passive wheel (23), a corrective lens conversion disk (26), and a simulated lens disk (29); both sides of the transmission shaft (47) are respectively fixed to the transmission shaft fixing block (17) and the transmission shaft fixing plate (33); the corrective lens conversion passive wheel (22) and the corrective lens conversion disk (26) are fixed to the transmission shaft (47), and the three are mutually related and rotate simultaneously; The simulated lens conversion passive wheel (23) is fixedly connected to the simulated lens disc (29), and the two pass through the transmission shaft (47) and rotate around it; there are four simulated lens installation holes (30) on the simulated lens disc (29), two of which are respectively installed with lenses simulating normal human eyes and simulating human eyes with astigmatism, and the other two are temporarily vacant, and a simulated lens conversion infrared passing hole (31) is arranged outside each simulated lens installation hole (30), and an additional simulated lens conversion initial infrared passing hole (59) is arranged outside the simulated lens installation hole (30) installed with a lens simulating normal human eyes, which is used to distinguish from other positions; There are six corrective lens mounting holes (24) on the corrective lens conversion disk (26) for fixing corrective lenses, one of the corrective lens mounting holes (24) is not mounted with a corrective lens, and the other five are respectively mounted with lenses for correcting small-angle myopia, large-angle myopia, small-angle hyperopia, large-angle hyperopia and astigmatism, and a corrective lens conversion infrared passing hole (25) is arranged outside each corrective lens mounting hole (24). An additional corrective lens conversion initial infrared passing hole (60) is arranged outside the corrective lens conversion infrared passing hole (25) where no corrective lens is mounted, for distinguishing from other positions; The motor drive structure comprises a corrective lens conversion drive motor (18), a corrective lens conversion transmission belt (20), a corrective lens conversion active wheel (21), a corrective lens conversion passive wheel (22), a simulated lens conversion passive wheel (23), a simulated lens conversion active wheel (38), a simulated lens conversion transmission belt (44), and a simulated lens conversion drive motor (45); the simulated lens conversion active wheel (38) is driven by the simulated lens conversion drive motor (45), the simulated lens conversion active wheel (38) is connected to the simulated lens conversion passive wheel (23) via the simulated lens conversion transmission belt (44), and the three are connected and driven via gears; the simulated lens conversion active wheel (38) is driven by the simulated lens conversion drive motor (45), the simulated lens conversion active wheel (38) is connected to the simulated lens conversion passive wheel (23) via the simulated lens conversion transmission belt (44), and the three are connected and driven via gears; The lens conversion passive wheel (23) is fixedly connected to the simulated lens disc (29), and both are provided with a through hole allowing the transmission shaft (47) to pass through. The simulated lens disc (29) rotates around the transmission shaft (47) under the drive of the simulated lens conversion drive motor (45); the corrective lens conversion active wheel (21) is driven by the corrective lens conversion drive motor (18), and the corrective lens conversion active wheel (21) is connected to the corrective lens conversion passive wheel (22) through the corrective lens conversion drive belt (20). The three are connected and driven by gears, and the corrective lens conversion drive motor (18) drives the corrective lens conversion disc (26) and the transmission shaft (47) to rotate together; The simulated retina transmission system comprises a moving slider (4), a ball screw transmission structure, a simulated retina structure and a second infrared detection structure; the simulated retina structure is fixed on the moving slider (4), and the moving slider (4) moves the simulated retina structure left and right with the moving slider (4) through the ball screw transmission structure; The simulated retina structure comprises a simulated retina support plate (3), a simulated retina fixing frame (5), an adjustable fixing groove (6), a retina camera (8), and a simulated retina (37); the simulated retina support plate (3) is fixed on a movable slider (4), the simulated retina fixing frame (5) is fixed on the simulated retina support plate (3) through an adjustable fixing groove (6), and the adjustable fixing groove (6) is used to adjust the left and right positions of the simulated retina fixing frame (5); the simulated retina (37) is fixed on the simulated retina fixing frame (5) for imaging, and serves as a simulated retina; the retina camera (8) is used to shoot images on the simulated retina (37).

2. The refractive error popular science simulation experience device according to claim 1, characterized in that: The image display and shooting components include: an adjustable telescopic rod (34), a display screen bracket (35), a display screen (36), a face camera fixing frame (9), and a face camera (10); the display screen (36) is fixed on the display screen bracket (35), and the display screen bracket (35) is fixed on the adjustable telescopic rod (34), and the two are at a vertical angle. The adjustable telescopic rod (34) can adjust the length by stretching and contracting, thereby adjusting the position of the display screen; the display screen (36) is composed of an LED dot matrix, which serves as the light source of the device; the face camera (10) is fixed by the face camera fixing frame (9), and the face camera can adjust the pitch angle.

3. The refractive error popular science simulation experience device according to claim 1, characterized in that: The first infrared detection structure comprises a corrective lens conversion infrared emitter upper (27), a corrective lens conversion infrared sensor upper (28), a simulated lens infrared sensor upper (32), a corrective lens conversion infrared emitter lower (39), a corrective lens conversion infrared sensor lower (40), a simulated lens infrared sensor lower (41), a simulated lens infrared emitter upper (42), a simulated lens infrared emitter lower (43), a simulated lens infrared sensor upper (32), a simulated lens infrared sensor lower (41), a simulated lens infrared emitter upper (42), and a simulated lens infrared emitter lower (43), which are respectively located on both sides of the simulated lens disk (29); the simulated lens infrared sensor upper (32) and the simulated lens infrared sensor lower (41) are located on both sides of the simulated lens disk (29); The line connecting the center of the upper body infrared emitter (42) is perpendicular to the vertical plane of the simulated lens disk (29), and the infrared light emitted by the upper body infrared emitter (42) can be received by the upper body infrared sensor (32) through the simulated lens conversion initial infrared through hole (59) on the simulated lens disk (29); the line connecting the center of the lower body infrared sensor (41) and the lower body infrared emitter (43) is perpendicular to the vertical plane of the simulated lens disk (29), and the infrared light emitted by the lower body infrared emitter (43) can be received by the lower body infrared sensor (41) through the simulated lens conversion infrared through hole (31) on the simulated lens disk (29).

4. The refractive error popular science simulation experience device according to claim 3, characterized in that: The upper corrective lens conversion infrared transmitter (27), the lower corrective lens conversion infrared transmitter (39), the upper corrective lens conversion infrared sensor (28), and the lower corrective lens conversion infrared sensor (40) are respectively located on both sides of the corrective lens conversion disk (26); the line connecting the centers of the upper corrective lens conversion infrared transmitter (27) and the upper corrective lens conversion infrared sensor (28) is perpendicular to the vertical plane of the corrective lens conversion disk (26), and the infrared light emitted by the upper corrective lens conversion infrared transmitter (27) can pass through the corrective lens conversion disk The corrective lens conversion initial infrared light on the disc (26) is received by the corrective lens conversion infrared sensor (28) through the hole (60); the line connecting the center of the corrective lens conversion infrared transmitter (39) and the center of the corrective lens conversion infrared sensor (40) is perpendicular to the vertical plane of the corrective lens conversion disc (26), and the infrared light emitted by the corrective lens conversion infrared transmitter (39) can be received by the corrective lens conversion infrared sensor (40) through the corrective lens conversion infrared hole (25) on the corrective lens conversion disc (26).

5. The refractive error popular science simulation experience device according to claim 4, characterized in that: When the upper corrective lens conversion infrared sensor (28) and the lower corrective lens conversion infrared sensor (40) simultaneously receive infrared light, it is used to determine that the corrective lens mounting hole (24) on the corrective lens conversion disk (26) is located at the initial position; when the lower corrective lens conversion infrared sensor (40) can receive infrared light but the upper corrective lens conversion infrared sensor (28) cannot receive infrared light, it is used to determine that the corrective lens mounting hole (24) here has reached the specified position.

6. The refractive error popular science simulation experience device according to claim 1, characterized in that: The second infrared detection structure comprises a ball screw infrared transmitter (14), a ball screw right limit infrared sensor (15), and a ball screw left limit infrared sensor (16); the ball screw infrared transmitter (14) is fixed on the movable slider (4); the ball screw right limit infrared sensor (15) and the ball screw left limit infrared sensor (16) are fixed on the movable slide rail (55), and the positions of the two on the movable slide rail (55) can be adjusted and re-fixed.

7. The refractive error popular science simulation experience device according to claim 6, characterized in that: When the movable slider (4) moves to the left to above the left limit infrared sensor (16) of the ball screw, the infrared light emitted by the ball screw infrared transmitter (14) can be received by the left limit infrared sensor (16) of the ball screw, and when the movable slider (4) moves to the right to above the right limit infrared sensor (15) of the ball screw, the infrared light emitted by the ball screw infrared transmitter (14) can be received by the right limit infrared sensor (15) of the ball screw.

8. The refractive error popular science simulation experience device according to claim 1, characterized in that: The ball screw transmission structure comprises a ball screw drive motor (1), a right limit block (2), a movable slider (4), a left limit block (12), a movable shaft (13), a screw shaft (54), and a movable slide rail (55); the ball screw drive motor (1) is connected to the screw shaft (54) to drive the screw shaft to rotate; the screw shaft (54) is fixedly connected to the movable slider (4), and the rotation of the screw shaft (54) can be converted into the left and right movement of the movable slider (4); the movable shaft (13) is parallel to the screw shaft (54), passes through the movable slider (4), and is used to guide the moving direction of the movable slider (4).

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