Portable screening instrument with adjusting function

Abstract

The invention discloses a convenient adjusting function screening instrument, which comprises two groups of lens cabins, the two groups of lens cabins are rotatably connected through an opening degree adjusting shaft, and lens cones are respectively arranged on the two groups of lens cabins; the lens module switching system comprises a mounting main shaft mounted in the lens bin, and a plurality of lens switching units are mounted on the mounting main shaft; the number of the single-eye covering units is two; the annular spherical lens group comprises a positive spherical lens group and a negative spherical lens group, the positive spherical lens group and the negative spherical lens group are rotationally connected into the two lens cones respectively, and control assemblies are installed on the lens cones; the sighting mark projection unit is mounted at the rear end of the lens cone; and two groups of distance conversion units are arranged, and the two groups of distance conversion units are respectively arranged in the two groups of lens cones. Compared with traditional professional equipment, the device has the remarkable advantage of being low in cost, and is suitable for being widely applied to personal user, family and community health inspection.

Description

Technical Field

[0001] The present invention relates to the technical field of vision detection devices, and particularly to a portable adjustable function screening instrument. Background Art

[0002] With the popularization of electronic devices and the increasing long-term close-range eye use in modern people's daily lives, visual health problems have become increasingly prominent. In particular, problems such as visual fatigue, accommodation incoordination, and myopia progression have attracted wide social attention. The accommodation function refers to the ability of the eye to adjust the focal length by changing the shape of the eye lens at different distances to ensure clear vision, and the effectiveness and coordination of accommodation are crucial for eye health. Existing visual detection methods mainly focus on checking eye position, refractive power, and eye movement, etc., but relatively less attention is paid to the assessment of the accommodation function. Especially for the common self-detection needs in families and communities, existing devices have not been able to provide simple and accurate solutions.

[0003] Most traditional accommodation function detection devices are large in size, complex in structure, and cumbersome in operation. Usually, they require professional technicians to operate, are expensive, and are not easy to popularize. Therefore, there is an urgent need in the market for a new type of portable, low-cost, and easy-to-operate accommodation function screening instrument for wide application in personal, family, medical institutions, and community health screenings. Existing devices often have the following disadvantages:

[0004] 1. Large device, lack of portability: Most existing accommodation function detection devices are usually designed as desktop or floor-standing types, with a large volume and are not easy to carry, making it difficult to meet the self-detection needs in personal or family environments.

[0005] 2. Complicated operation, difficult to complete independently: The operation of traditional devices usually involves multiple cumbersome steps such as adjusting lenses, selecting different refractive powers, and adjusting the viewing distance, etc., and requires professional operation, making it difficult for ordinary users to complete independently.

[0006] 3. High cost, difficult to popularize: Existing devices are expensive, resulting in poor popularity in ordinary families and community health screenings, and causing cost pressure on large-scale screening activities of public health institutions.

[0007] 4. Single function, unable to meet diverse needs: Most existing devices can only provide accommodation function detection at a single distance, lacking multi-functional integration for different distances (such as near and far) and different visual target tests, and cannot comprehensively evaluate the accommodation function of the eyes.

[0008] Based on the above technical problems, the present invention provides a portable adjustable function screening instrument. Summary of the Invention

[0009] The object of the present invention is to provide a portable adjustment function screening instrument to solve the problems existing in the prior art.

[0010] To achieve the above object, the present invention provides the following solution: The present invention provides a portable adjustment function screening instrument, including:

[0011] Lens cartridges, there are two groups of the lens cartridges, and the two groups of the lens cartridges are rotationally connected by an opening / closing degree adjustment shaft. Mirror tubes are respectively installed on the two groups of the lens cartridges, and the lens cartridges are communicated with the mirror tubes;

[0012] Lens module switching system, the lens module switching system includes a mounting main shaft installed in the lens cartridge, and a plurality of lens switching units are installed on the mounting main shaft;

[0013] Monocular occlusion units, there are two groups of the monocular occlusion units, and the two groups of the monocular occlusion units are respectively arranged at the front ends of the mirror tubes;

[0014] Annular spherical lens group, the annular spherical lens group includes a positive spherical lens group and a negative spherical lens group. The positive spherical lens group and the negative spherical lens group are respectively rotationally connected in the two mirror tubes. A control component is installed on the mirror tube, and the control component is respectively used to control the rotation of the positive spherical lens group and the negative spherical lens group. The monocular occlusion units are respectively located in front of the positive spherical lens group and the negative spherical lens group;

[0015] Visual target projection unit, the visual target projection unit is installed at the rear end of the mirror tube;

[0016] Distance conversion unit, there are two groups of the distance conversion units, and the two groups of the distance conversion units are respectively arranged in the two mirror tubes. The distance conversion unit is arranged between the annular spherical lens group and the visual target projection unit for switching the visual distance to 33 cm and / or 6 m;

[0017] Wherein, the monocular occlusion unit and the distance conversion unit are respectively installed on the lens switching unit.

[0018] According to the portable adjustment function screening instrument provided by the present invention, the lens switching unit includes a sleeve, the sleeve is rotationally connected to the main shaft, an eccentric wheel is fixedly connected to the sleeve, the axis of the eccentric wheel is parallel to the axis of the sleeve, a connecting rod is slidably connected to the outer peripheral surface of the eccentric wheel, one end of the connecting rod is fixedly connected to a lens holder, the connecting rod is slidably connected in the lens cartridge, the lens holder extends into the mirror tube, a control gear is fixedly connected to the sleeve, and a through groove is opened on the lens cartridge, and the control gear passes through the through groove and extends out.

[0019] According to the portable adjustment function screening instrument provided by the present invention, the visual target projection unit includes an installation cylinder, the installation cylinder is of a U-shaped structure, both ends of the installation cylinder are respectively connected to the two lens barrels, a light-emitting visual target is fixed at the middle position of the installation cylinder, and reflecting mirror groups are respectively installed in two channels of the installation cylinder, and the reflecting mirror groups are used to reflect the light-emitting visual target into the lens barrels.

[0020] According to the portable adjustment function screening instrument provided by the present invention, an installation frame is rotatably connected in the lens barrel, an installation ring is rotatably connected to the installation frame, the positive spherical lens group and the negative spherical lens group are respectively fixed on the installation ring, and the installation ring is in transmission cooperation with the control component.

[0021] According to the portable adjustment function screening instrument provided by the present invention, the control component includes a driving gear, an installation groove is formed on the lens barrel, the driving gear is rotatably connected in the installation groove, a tooth groove is formed on the outer wall of the installation ring, and the driving gear is meshed with the tooth groove.

[0022] According to the portable adjustment function screening instrument provided by the present invention, the monocular occlusion unit includes an occlusion lens, and the occlusion lens is installed on the lens frame located at the front end of the lens bin.

[0023] According to the portable adjustment function screening instrument provided by the present invention, the distance conversion unit includes a +3.00D lens and a +0.17D lens, and both the +3.00D lens and the +0.17D lens are installed on the lens frame located at the middle position of the lens bin.

[0024] According to the portable adjustment function screening instrument provided by the present invention, the diopter range of the positive spherical lens group is from 0.00D to +6.00D; the diopter range of the negative spherical lens group is from 0.00D to -6.00D, with a unit of 0.25D.

[0025] The present invention discloses the following technical effects:

[0026] The screening instrument of the present invention has a binocular telescope structure. This design can not only ensure the synchronous detection of both eyes, but also provide a comfortable use experience. An adjustable optical component is configured in each lens barrel, and by adjusting the position of the lens barrel, the best visual state of the user during detection can be achieved. The design of the binocular structure not only provides stable visual support, but also is conducive to accurately judging the binocular accommodation ability.

[0027] The present invention can easily switch between the monocular occlusion or binocular occlusion functions, and can accurately adjust the lens diopter and the visual distance setting, simplifying the complex detection process, and ordinary users can use it without professional training.

[0028] The present invention has a significant low-cost advantage compared with traditional professional equipment and is suitable for wide application in personal users, families, and community health inspections, which helps to improve the visual health level of the public.

[0029] The present invention integrates multiple functions such as near and far adjustment tests, monocular and binocular accommodation function tests, and viewing distance conversion, etc., and can comprehensively evaluate the eye accommodation ability of users, having high practical value.

[0030] Through a fixed visual target and an accurate diopter adjustment system, the present invention can ensure the stability and accuracy of each test and provide reliable visual health data for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0032] Figure 1 It is a schematic structural diagram of the portable accommodation function screening instrument of the present invention;

[0033] Figure 2 It is a schematic structural diagram of the lens module switching system of the present invention;

[0034] Figure 3 It is a schematic structural diagram of the annular spherical lens group of the present invention;

[0035] Figure 4 It is a schematic structural diagram of the visual target projection unit of the present invention.

[0036] Among them, 1, lens bin; 2, lens barrel; 3, lens module switching system; 4, monocular occlusion unit; 5, annular spherical lens group; 6, visual target projection unit; 7, distance conversion unit; 8, connecting rod; 9, lens holder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0038] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0039] Reference Figures 1-4 , the present invention provides a portable adjustment function screening instrument, comprising:

[0040] Lens bins 1, there are two groups of lens bins 1, and the two groups of lens bins 1 are rotationally connected through an opening / closing degree adjustment shaft. Lens barrels 2 are respectively installed on the two groups of lens bins 1, and the lens bins 1 and the lens barrels 2 are communicated with each other;

[0041] Lens module switching system 3, the lens module switching system 3 includes a mounting main shaft installed in the lens bin 1, and a plurality of lens switching units are installed on the mounting main shaft;

[0042] Monocular occlusion unit 4, there are two groups of monocular occlusion units 4, and the two groups of monocular occlusion units 4 are respectively arranged at the front ends of the lens barrels 2;

[0043] Annular spherical lens group 5, the annular spherical lens group 5 includes a positive spherical lens group and a negative spherical lens group. The positive spherical lens group and the negative spherical lens group are respectively rotationally connected in the two groups of lens barrels 2. Control components are installed on the lens barrels 2, and the control components are respectively used to control the rotation of the positive spherical lens group and the negative spherical lens group. The monocular occlusion units 4 are respectively located in front of the positive spherical lens group and the negative spherical lens group;

[0044] Visual target projection unit 6, the visual target projection unit 6 is installed at the rear end of the lens barrel 2;

[0045] Distance conversion unit 7, there are two groups of distance conversion units 7, and the two groups of distance conversion units 7 are respectively arranged in the two groups of lens barrels 2. The distance conversion unit 7 is arranged between the annular spherical lens group 5 and the visual target projection unit 6, and is used to switch the visual distance to 33 cm and / or 6 m;

[0046] Among them, the monocular occlusion unit 4 and the distance conversion unit 7 are respectively installed on the lens switching unit.

[0047] During use, the user needs to place the screening instrument in front of the eyes. After adjusting the comfortable position of the lens barrel 2, the test can be started. First, the user selects whether to cover one eye according to the need, and rotates the control button to select the monocular or binocular test mode. The control component is used to control the rotation of the annular spherical lens group 5 to select the required degree range for the test. The annular spherical lens group 5 rotates to change the degree and show different adjustment requirements. The user can also control the switching between two test distances of near (33 cm) and far (6 m) to simulate different visual tasks. Finally, the refraction principle of the visual target module ensures that during the detection process, the user sees a centered and consistent visual target.

[0048] For a further optimized solution, the lens switching unit includes a sleeve which is rotatably connected to the main shaft. An eccentric wheel is fixedly connected to the sleeve, and the axis of the eccentric wheel is parallel to the axis of the sleeve. A connecting rod 8 is slidably connected to the outer peripheral surface of the eccentric wheel. One end of the connecting rod 8 is fixedly connected to a lens holder 9. The connecting rod 8 is slidably connected within the lens chamber 1, and the lens holder 9 extends into the lens barrel 2. A control gear is fixedly connected to the sleeve, and a through groove is formed in the lens chamber 1, and the control gear passes through the through groove and extends out.

[0049] For a further optimized solution, the visual target projection unit 6 includes an installation cylinder which is of a U-shaped structure. The two ends of the installation cylinder are respectively connected to the two lens barrels 2, and a luminous visual target is fixed at the middle position of the installation cylinder. Reflector groups are respectively installed in the two channels of the installation cylinder, and the reflector groups are used to reflect the luminous visual target into the lens barrel 2.

[0050] The screening instrument is designed with a fixed single visual target display module. Using the principle of light reflection, the visual target can be centered and displayed simultaneously in the two lens barrels 2. Through this design, when the user is performing the adjustment test, they can always see a consistent visual target, avoiding problems such as the deviation of the visual target position or the unclear visual target, thereby improving the accuracy of the test. The design of the visual target ensures the consistency of the visual target during the test, enabling the user to focus on the detection of the eye accommodation function without being interfered by other factors.

[0051] For a further optimized solution, a mounting frame is rotatably connected within the lens barrel 2, and a mounting ring is rotatably connected to the mounting frame. The positive spherical lens group and the negative spherical lens group are respectively fixed on the mounting ring, and there is a transmission cooperation between the mounting ring and the control component.

[0052] The positive spherical lens group is composed of multiple groups of axially arranged prisms with different thicknesses, and the adjustment is achieved by incorporating prisms with different thicknesses into the optical path.

[0053] For a further optimized solution, the control component includes a driving gear. An installation groove is formed in the lens barrel 2, and the driving gear is rotatably connected within the installation groove. A tooth groove is formed on the outer wall of the mounting ring, and the driving gear meshes with the tooth groove.

[0054] For a further optimized solution, the monocular occlusion unit 4 includes an occlusion lens which is installed on the lens holder 9 located at the front end of the lens chamber 1. By rotating the knob in front of the lens barrel 2, the user can choose to occlude the left eye or the right eye separately, or not occlude any eye (i.e., both eyes are in the open state). This function is used to test the monocular accommodation ability and the binocular accommodation ability. In the case of monocular occlusion, the user can detect whether the near and far adjustments of the monocular are accurate and whether they can complete the adjustment task independently. In the binocular mode, the cooperative accommodation function of the two eyes can be detected to evaluate the coordination of eye accommodation and the overall accommodation ability.

[0055] For a further optimized solution, the distance conversion unit 7 includes a +3.00D lens and a +0.17D lens, and both the +3.00D lens and the +0.17D lens are mounted on the lens holder 9 located at the middle position of the lens chamber 1.

[0056] Distance simulation is used to test the accommodation ability of the eyes when reading at close range, while long-distance simulation is used to test the accommodation response of the eyes when observing at long distance. The conversion between the two distances can accurately simulate different visual needs in real life and help judge the accommodation ability of the eyes under different conditions.

[0057] Through the setting of the occluding lens, different visual conditions can be simulated to comprehensively evaluate the accommodation ability of the eyes. The design of the distance conversion unit 7 enables the screener to adapt to the accommodation function tests at different distances and meet various clinical needs.

[0058] For a further optimized solution, the diopter range of the positive spherical lens group is from 0.00D to +6.00D; the diopter range of the negative spherical lens group is from 0.00D to -6.00D, with a unit of 0.25D.

[0059] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0060] The embodiments described above are only for describing the preferred mode of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A portable adjustment function screening instrument, characterized in that: include: A lens bin (1), wherein the lens bin (1) is provided with two groups, the two groups of lens bins (1) are rotatably connected via an opening and closing degree adjustment shaft, a lens barrel (2) is respectively installed on the two groups of lens bins (1), and the lens bins (1) are communicated with the lens barrel (2); A lens module switching system (3), the lens module switching system (3) comprising a mounting spindle mounted in the lens chamber (1), a plurality of lens switching units being mounted on the mounting spindle; A monocular covering unit (4), wherein two groups of the monocular covering units (4) are provided, and the two groups of the monocular covering units (4) are respectively provided at the front end of the lens barrel (2); An annular spherical lens group (5), the annular spherical lens group (5) comprising a positive spherical lens group and a negative spherical lens group, the positive spherical lens group and the negative spherical lens group being rotatably connected in two groups of lens barrels (2) respectively, the lens barrels (2) being provided with a control component, the control component being used to control the rotation of the positive spherical lens group and the negative spherical lens group respectively, the single-eye covering unit (4) being located in front of the positive spherical lens group and the negative spherical lens group respectively; A sight mark projection unit (6), wherein the sight mark projection unit (6) is installed at the rear end of the lens barrel (2); A distance conversion unit (7), wherein two groups of the distance conversion units (7) are provided, and the two groups of the distance conversion units (7) are respectively provided in the two groups of the lens barrels (2), and the distance conversion units (7) are provided between the annular spherical lens group (5) and the sight mark projection unit (6), and are used to switch the visual distance to 33 cm and / or 6 m; Wherein, the single-eye covering unit (4) and the distance conversion unit (7) are respectively mounted on the lens switching unit.

2. A portable adjustment function screening instrument according to claim 1, characterized in that: The lens switching unit comprises a sleeve, the sleeve is rotatably connected to the main shaft, an eccentric wheel is fixedly connected to the sleeve, the axis of the eccentric wheel is parallel to the axis of the sleeve, a connecting rod (8) is slidably connected to the outer peripheral surface of the eccentric wheel, one end of the connecting rod (8) is fixedly connected to a lens frame (9), the connecting rod (8) is slidably connected in the lens chamber (1), the lens frame (9) extends into the lens barrel (2), a control gear is fixedly connected to the sleeve, a through slot is provided in the lens chamber (1), and the control gear extends through the through slot.

3. A portable adjustment function screening instrument according to claim 1, characterized in that: The sight mark projection unit (6) comprises a mounting tube, the mounting tube being a U-shaped structure, the two ends of the mounting tube being respectively connected to the two lens barrels (2), a luminous sight mark being fixed at the middle position of the mounting tube, and a reflector group being respectively installed in the two channels of the mounting tube, the reflector group being used to reflect the luminous sight mark into the lens barrel (2).

4. A portable adjustment function screening instrument according to claim 1, characterized in that: A mounting frame is rotatably connected inside the lens barrel (2), a mounting ring is rotatably connected on the mounting frame, the positive spherical lens group and the negative spherical lens group are respectively fixed on the mounting rings, and the mounting rings are transmission-matched with the control assembly.

5. A portable adjustment function screening instrument according to claim 4, characterized in that: The control component comprises a driving gear, a mounting groove is provided on the lens barrel (2), the driving gear is rotatably connected in the mounting groove, a tooth groove is provided on the outer wall of the mounting ring, and the driving gear is meshed with the tooth groove.

6. A portable adjustment function screening instrument according to claim 2, characterized in that: The monocular covering unit (4) comprises a covering lens, and the covering lens is mounted on the lens frame (9) located at the front end of the lens bin (1).

7. A portable adjustment function screening instrument according to claim 2, characterized in that: The distance conversion unit (7) comprises a +3.00D lens and a +0.17D lens, and the +3.00D lens and the +0.17D lens are both mounted on the lens frame (9) located in the middle of the lens bin (1).

8. A portable adjustment function screening instrument according to claim 1, characterized in that: The power range of the positive spherical lens group is 0.00D to +6.00D; the power range of the negative spherical lens group is 0.00D to -6.00D, with 0.25D as a unit.

Images