Portable vision refraction self-testing device

Abstract

The utility model discloses a portable vision refraction self-testing device which comprises an outer cylinder and an inner cylinder, a biconvex lens is detachably installed at one end of the outer cylinder, a biconcave lens is detachably installed at one end of the inner cylinder, the end, provided with the lens, of the inner cylinder is connected with the end, not provided with the lens, of the outer cylinder, and the end, provided with the lens, of the inner cylinder is connected with the outer cylinder. The inner cylinder is installed in the outer cylinder in a telescopic mode, the distance between the biconvex lens and the biconcave lens is adjusted by adjusting the telescopic length of the inner cylinder, and a dial used for recording changes of the distance between the lenses is arranged on the surface of the inner cylinder. According to the utility model, through optimization design and material selection, economical efficiency, portability and usability are realized, and the refractive screening and monitoring capability is ensured at the same time; due to the improvements, the portable vision refraction self-testing device has remarkable advantages in application in families and remote areas, and the vision health level of the public can be effectively improved.

Description

Technical Field

[0001] The utility model relates to a portable vision refraction self-testing device, belonging to the technical field of vision testing. Background Art

[0002] Currently, there are mainly the following methods for visual acuity refraction testing:

[0003] (1) Handheld vision refraction measurement devices: These devices typically use high-precision measurement principles such as wavefront detection and infrared focusing to provide accurate refractive data. However, due to their high cost, these devices are primarily used in medical institutions and are not suitable for home use.

[0004] (2) Traditional mechanical binocular comprehensive refraction tester: This device is large in size and complex to operate. It requires professional personnel to operate and maintain it. Therefore, it is usually only used in professional medical environments.

[0005] (3) Professional-grade computer ophthalmometer: This device provides highly accurate visual acuity refraction measurement and usually requires a professional operator to operate. Again, it is expensive and is mainly for medical professionals.

[0006] The problems with the above detection methods are:

[0007] (1) Large size and inconvenient to carry: Existing vision refractive power measurement equipment is usually large and difficult to carry, and is not suitable for portable use.

[0008] (2) Professional operation: The operation of these devices is complicated and requires professional personnel to operate. It is difficult for ordinary users to use them by themselves.

[0009] (3) High price: Existing equipment is expensive, usually ranging from tens of thousands to hundreds of thousands of yuan, which is beyond the economic affordability of ordinary families.

[0010] As can be seen from the above, there are currently few refractive power measurement devices suitable for home use.

[0011] After searching, the utility model patent with application number 2021222835225 discloses a household refractive power measuring device, including an eyepiece tube and an observation tube, the outside of the observation tube is provided with an outer shell, the outer shell is rotatably connected to the observation tube, the side wall of the observation tube is fixedly provided with an inner lens, the inside of the observation tube is fixedly provided with a near vision examination chart, the end of the observation tube away from the inner lens is fixedly connected to the light source tube, the inside of the light source tube is provided with a power module for illuminating the vision examination chart, and the outer shell is rotatably provided with an adjustment mechanism for moving the outer lens, so that the measuring device has the advantages of fast operation, low cost and good convenience. The eye degree can be measured without the assistance of professionals, which is convenient for patients to understand the eye vision in time and take further prevention and control measures.

[0012] Although the diopter measuring device of the above patent can be used at home, it has the following problems:

[0013] (1) In terms of design structure, the rotary mechanical structure is complex and easy to damage;

[0014] (2) There is a fixed near vision chart inside, and the national standard distance vision chart cannot be used. It is impossible to directly observe objects in the actual external environment, and its use is relatively limited.

[0015] (3) The measurement range uses a +4.0D-12.0D combined progressive multifocal double free-form surface lens, and the lens cannot be replaced.

[0016] (4) Built-in LED light source is required.

[0017] (5) The structural design is relatively complex and the cost is high.

[0018] The above shortcomings further limit the popularity of vision refraction measurement equipment in households. Summary of the Invention

[0019] The purpose of this utility model is to provide a portable vision refraction self-testing device, which uses 3D printing technology to reduce costs and is designed with a structure that is easy to carry and operate, so that ordinary users can easily perform preliminary screening and monitoring of vision refraction, thereby meeting the needs of home users.

[0020] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a portable vision refraction self-test device, which includes an outer tube and an inner tube, one end of the outer tube is detachably mounted with a biconvex lens, one end of the inner tube is detachably mounted with a biconcave lens, the end of the inner tube with the lens is connected to the end of the outer tube without the lens, and the inner tube is telescopically mounted in the outer tube, the distance between the biconvex lens and the biconcave lens is adjusted by adjusting the telescopic length of the inner tube, and a dial for recording the change in lens spacing is provided on the surface of the inner tube.

[0021] As a further preferred embodiment of this solution, the cylinder bodies of the outer cylinder and the inner cylinder are both manufactured by 3D printing.

[0022] As a further preferred embodiment of this solution, the biconvex lens adopts a +10D lens, and the biconcave lens adopts a -23.5D lens.

[0023] As a further preferred embodiment of this solution, one end of the outer barrel where the lens is mounted is detachably mounted with an outer barrel cap with a hollow structure, and an annular boss for engaging the double convex lens is provided at the end of the outer barrel and in the outer barrel cap.

[0024] As a further preferred embodiment of this solution, one end of the inner cylinder where the lens is mounted is detachably mounted with an inner barrel cap with a hollow structure, and an annular boss for engaging the biconcave lens is provided in the end of the inner cylinder and the inner barrel cap.

[0025] As a further preferred embodiment of this solution, the dial is provided with a color difference scale for reflecting the degree of myopia.

[0026] As a further preferred embodiment of this solution, an observation window for marking scale and color difference is provided on the outer cylinder.

[0027] As a further preferred embodiment of this solution, barrel covers are provided at the front end of the outer barrel and the rear end of the inner barrel.

[0028] Compared with the existing technology, the present invention has the following technical advantages and effects:

[0029] (1) Economical and affordable:

[0030] Advantages: By using 3D printing technology and plastic materials, the production cost of this device is significantly reduced. Existing high-precision refractive measurement equipment is usually expensive and limited to professional medical institutions, while this device is suitable for ordinary families to purchase.

[0031] Effect: It lowers the economic threshold for vision refractive screening, making the equipment affordable for more families and helping to improve the public's awareness and management of vision health.

[0032] (2) Portability and ease of use:

[0033] Advantages: Compared to traditional binocular phoroptors and professional-grade computer refraction devices, this device is compact and lightweight, making it suitable for portable use. Its operation is simple and requires no professional background; ordinary users can simply slide the inner and outer shells to perform a vision test.

[0034] Effect: It improves the accessibility and popularity of the device, allowing users to easily perform vision tests at home or on the go. It provides a convenient means of vision screening, especially for remote areas and resource-limited environments.

[0035] (3) Initial screening and monitoring capabilities:

[0036] Advantages: The device design includes a graduated display that allows the user to record changes in lens spacing, providing a rough estimate of diopter power. This feature allows the user to monitor their vision regularly and understand changes in their vision.

[0037] Effect: Users can detect vision problems in a timely manner and conduct follow-up monitoring, which helps to detect vision abnormalities early and seek medical treatment in time to prevent further deterioration of vision problems.

[0038] (4) Non-invasive and safe:

[0039] Advantages: The design of the device does not involve any invasive procedures and measures visual acuity refraction only through optical principles, without the use of any chemical reagents or complex electronic equipment.

[0040] Effect: It improves the safety of use, avoids the discomfort and risks that may be caused by invasive examinations, and is particularly suitable for daily use in a home environment.

[0041] (5) Vision adjustment training:

[0042] The person being tested can perform visual training by observing and adjusting the distance of the lens to adjust the contraction and expansion of the ciliary muscles of the eye, thereby playing a role in regulating vision.

[0043] In summary, through optimized design and material selection, this utility model achieves affordability, portability, and ease of use, which are not available in existing technologies, while also ensuring the ability to perform preliminary vision screening and monitoring. These improvements make the portable refractive self-test device significantly advantageous for use in homes and remote areas, effectively improving public vision health. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0045] Figure 2 This is a schematic diagram of the outer cylinder structure of the utility model;

[0046] Figure 3 This is a schematic diagram of the inner cylinder structure of the utility model;

[0047] Markings in the figure are: 1-outer cylinder, 2-inner cylinder, 3-double convex lens, 4-outer barrel cap, 5-observation window, 6-double concave lens, 7-inner barrel cap, 8-dial. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] like Figures 1 to 3As shown, a portable vision refraction self-test device includes an outer tube 1 and an inner tube 2. A biconvex lens 3 is detachably mounted on one end of the outer tube 1, and a biconcave lens 6 is detachably mounted on one end of the inner tube 2. The end of the inner tube 2 with the lens is connected to the end of the outer tube 1 without the lens, and the inner tube 2 is telescopically mounted in the outer tube 1. The distance between the biconvex lens 3 and the biconcave lens 6 is adjusted by adjusting the telescopic length of the inner tube 2. At the same time, a dial 8 for recording the change in the lens spacing is provided on the surface of the inner tube 2.

[0050] In this embodiment, the cylinder bodies of the outer cylinder 1 and the inner cylinder 2 are both manufactured by 3D printing.

[0051] In this embodiment, the biconvex lens 3 is a +10D lens, and the biconcave lens 6 is a -23.5D lens. Although the present invention uses a combination of biconvex and biconcave lenses, in actual applications, other types of lenses, such as plano-convex lenses, meniscus lenses, etc., can also be used as long as the corresponding diopter adjustment effect can be achieved.

[0052] In this embodiment, the end of the outer barrel 1, where the lens is mounted, is detachably mounted with a hollow outer barrel cap 4. Furthermore, an annular boss (not shown) is provided on the end of the outer barrel 1 and within the outer barrel cap 4 for engaging the biconvex lens 3. The end of the inner barrel 2, where the lens is mounted, is detachably mounted with a hollow inner barrel cap 7. Furthermore, an annular boss (not shown) is provided on the end of the inner barrel 2 and within the inner barrel cap 7 for engaging the biconcave lens 6.

[0053] In this embodiment, the scale plate 8 is provided with a color difference scale for reflecting the degree of myopia. At the same time, the outer cylinder 1 is provided with an observation window 5 for marking the scale and color difference.

[0054] In this embodiment, barrel covers can be provided at the front end of the outer barrel 1 and the rear end of the inner barrel 2 to block dust from the outer wall and protect the internal lenses.

[0055] The working principle of the utility model is as follows: the person being measured holds the outer tube in one hand and the inner tube in the other hand, and adjusts the distance between the lenses by pulling the inner and outer tubes until the object at a fixed position (such as the sight mark E character) is observed at the clearest point. After repeating this three times, the person checks the observation window to obtain the visual acuity diopter value and the myopia degree color code.

[0056] The above illustrates and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not in any way limit the scope of protection of the present invention. Any technical solution obtained by equivalent substitution or other methods falls within the scope of protection of the present invention. Any portion not covered by the present invention is equivalent to or can be implemented using existing technology.

Claims

1. A portable vision refraction self-testing device, characterized in that: The invention comprises an outer cylinder and an inner cylinder, wherein a biconvex lens is detachably mounted on one end of the outer cylinder, and a biconcave lens is detachably mounted on one end of the inner cylinder, and the end of the inner cylinder with the lens is connected to the end of the outer cylinder without the lens, and the inner cylinder is telescopically mounted inside the outer cylinder, and the distance between the biconvex lens and the biconcave lens is adjusted by adjusting the telescopic length of the inner cylinder, and a dial for recording the change in the lens spacing is provided on the surface of the inner cylinder.

2. A portable vision refraction self-testing device according to claim 1, characterized in that: The cylinder bodies of the outer cylinder and the inner cylinder are both manufactured by 3D printing.

3. The portable vision refraction self-testing device according to claim 1, characterized in that: The biconvex lens adopts a +10D lens, and the biconcave lens adopts a -23.5D lens.

4. The portable vision refraction self-testing device according to claim 1, characterized in that: An outer barrel cap with a hollow structure is detachably mounted on one end of the outer barrel where the lens is mounted, and an annular boss for engaging the double convex lens is provided in the end of the outer barrel and the outer barrel cap.

5. The portable vision refraction self-testing device according to claim 1, characterized in that: An inner barrel cap with a hollow structure is detachably mounted on one end of the inner barrel where the lens is mounted, and an annular boss for engaging the biconcave lens is provided in the end of the inner barrel and the inner barrel cap.

6. The portable vision refraction self-testing device according to claim 1, characterized in that: The scale plate is provided with a color difference scale for reflecting the degree of myopia.

7. The portable vision refraction self-testing device according to claim 1, characterized in that: The outer cylinder is provided with an observation window for marking scale and color difference.

8. The portable vision refraction self-testing device according to claim 1, characterized in that: The front end of the outer cylinder and the rear end of the inner cylinder are provided with barrel covers.

Images