Multifunctional portable visual function detection device

Abstract

The application provides a multifunctional portable visual function detection device, which comprises a large screen, a small screen assembly, a reflection assembly, a rear support for fixing the small screen assembly and the reflection assembly, an optical module and a front support for fixing the optical module; the reflection assembly comprises two mirrors which can rotate with a mirror support; and the optical module comprises two lenses which can slide up and down along the front support. The detection device has the characteristics of high efficiency, high integration and portability, adopts a common optical path design, applies a reflection device, adjusts image elements, effectively reduces the size of the device, applies virtual imaging technology of the optical module to realize 5000mm visual function detection, and does not need any auxiliary personnel to independently complete 11 detection functions of visual acuity, color vision, stereoscopic vision, contrast sensitivity, hidden squint and flash fusion frequency under 300mm and 5000mm visual distances.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photoelectric instruments, and particularly relates to a multifunctional portable visual function detection device. BACKGROUND

[0002] In the field of modern medicine, the detection of human eyes has been an important direction of medical development. Traditional visual function detection devices occupy a large space, causing serious space waste. Due to the complex items of visual function examination, the traditional visual function detection method or device can usually only complete single, two or several visual function detection. Moreover, the detection method is complex, and usually needs to be operated by multiple auxiliary personnel, resulting in low function integration of the detection device and long examination time. In addition, the detection device is heavy and inconvenient to carry. SUMMARY

[0003] The purpose of the present application is to provide a multifunctional portable visual function detection device with high efficiency, high integration and small size, so as to overcome the shortcomings of the current visual function detection device in this technical field, such as monotonous function, large space occupation, complex operation and inconvenience to carry.

[0004] The purpose of the present application is achieved by the following technical scheme:

[0005] A multifunctional portable visual function detection device comprises a large screen, a small screen assembly, a reflection assembly, a rear support for fixing the small screen assembly and the reflection assembly, an optical module, and a front support for fixing the optical module.

[0006] The large screen is crimped in the large screen shell, and the large screen shell is fixed with the front side of the rear support. The small screen assembly, the reflection assembly, the rear support, the front support and the optical module are all packaged in the shell.

[0007] The small screen assembly is composed of a small screen and a small screen support supporting the small screen. The reflection assembly comprises two reflecting mirrors, the reflecting mirrors are fixed on a reflecting mirror support, and the bottom of the reflecting mirror support is rotationally connected with a rolling shaft. The optical module comprises two lenses and a lens barrel for fixing the lenses, and the lens barrel can slide along the front support.

[0008] The shell is further provided with a flash light assembly for flash fusion frequency detection.

[0009] Further, the large screen is crimped in the large screen shell with a pressing strip sleeved on the edge of the large screen.

[0010] Further, two groups of mounting blocks are arranged on both sides of the large screen in the large screen shell, two groups of connecting members are respectively sleeved on the corresponding mounting blocks, the bottom of each connecting member is fixed with the rear support through bolts, and a gasket is arranged at the connecting position.

[0011] Further, the small screen support is fixed on the top of the rear support by bolts.

[0012] Further, the bottom of the mirror support is provided with two round holes for the rolling shafts, the two side necks of the rolling shafts are matched with the inner rings of two rolling bearings respectively, the outer rings of the two rolling bearings are matched with the bearing seat holes of two bearing seats, and the two bearing seats are fixed on the top of the rear support.

[0013] Further, a pull pin matched with the neck gap is arranged at one side neck of the rolling shaft, the pull pin is arranged outside the shell and can rotate around the neck.

[0014] Further, the two sides of the lens barrel are provided with rails, the front support is provided with a sliding seat, and the rails can slide up and down on the sliding seat.

[0015] Further, the front support is further provided with a limiting mechanism, so that the optical module cannot fall off the front support.

[0016] Further, the top of the mirror support is further provided with a handle arranged outside the shell.

[0017] Further, the flash assembly is composed of a flashing LED lamp, a lamp holder and a switchable homogenizing glass, and is arranged outside the front support in the shell.

[0018] Compared with the prior art, the beneficial effects of the present application are that:

[0019] The present application provides a multifunctional portable visual function detection device, which has the characteristics of high efficiency, high integration and portability, adopts common optical path design, and applies a reflecting device to realize the adjustment of image elements and effectively reduce the device space size; the virtual imaging technology of the optical module is applied to realize the detection of 5000mm visual function; in addition, all the above operations do not require any auxiliary personnel and can independently complete 11 detection functions of visual acuity, color vision, stereoscopic vision, contrast sensitivity, hidden squint and flash fusion frequency under 300mm and 5000mm visual distance. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application.

[0021] Figure 1 It is an internal structure schematic diagram of the multifunctional portable visual function detection device;

[0022] Figure 2 It is a whole machine structure schematic diagram of the multifunctional portable visual function detection device;

[0023] Figure 3 schematic diagram of a small screen assembly;

[0024] Figure 4 schematic diagram of a reflection assembly;

[0025] Figure 5 schematic diagram of an optical module;

[0026] Figure 6 schematic diagram of a large screen assembly;

[0027] Figure 7 schematic diagram of a 300mm visual function detection state;

[0028] Figure 8 schematic diagram of 300mm color vision, stereoscopic vision, contrast sensitivity, and phoria;

[0029] Figure 9 schematic diagram of a 5000mm visual function detection state;

[0030] Figure 10 schematic diagram of 5000mm color vision, stereoscopic vision, contrast sensitivity, and phoria function detection state. DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0032] As shown in Figure 1 The multifunctional portable visual function detection device of the present application comprises a large screen 1.2, a small screen assembly 3, a reflection assembly 5, a rear support 4 for fixing the small screen assembly 3 and the reflection assembly 5, an optical module 9, and a front support 6 for fixing the optical module 9. The small screen assembly 3, the reflection assembly 5, the rear support 4, the front support 6, and the optical module 9 are all encapsulated inside a housing 10.

[0033] As shown in Figure 6As shown in the figure, the large screen 1.2 is crimped in the large screen shell 1.1, for example, the large screen 1.2 is crimped in the large screen shell 1.1 after the edge of the large screen 1.2 is sleeved with the pressing strip 1.3. The pressing strip 1.3 is arranged to prevent the light source at the back of the backlight LED display screen from leaking light and affecting the detection result. The large screen shell 1.1 is fixed to the front side of the rear support 4, for example, two groups of mounting blocks are arranged on both sides of the large screen 1.2 in the large screen shell 1.1, two groups of connecting members are sleeved on the corresponding mounting blocks, the bottom of each connecting member is fixed to the rear support 4 through a bolt, and a gasket 2 is arranged at the connecting position. The purpose of arranging the gasket 2 is to adjust the position of the screen and the optical system, so as to ensure that the optical axis is perpendicular to the screen.

[0034] As shown in the figure, Figure 3 The small screen assembly 3 is composed of a small screen 3.2 and a small screen support 3.1 supporting the small screen 3.2, and the small screen support 3.1 is fixed on the top of the rear support 4 through a bolt. The small screen 3.2 of the present application is arranged on the top of the rear support 4 in order to save space, reduce volume, reduce weight and make the structure more compact. The image displayed on the small screen 3.2 is reflected by the mirror 5.4 and imaged through the visual system, which is mainly applied to the detection of vision.

[0035] As shown in the figure, Figure 4 The reflection assembly 5 includes two mirrors 5.4, which are fixed on the mirror support 5.3, and the bottom of the mirror support 5.3 is rotatably connected with a rolling shaft. For example, the bottom of the mirror support 5.3 is provided with two circular holes for the rolling shaft to pass through, the two sides of the rolling shaft are respectively matched with the inner rings of two rolling bearings, the outer rings of the two rolling bearings are matched with the bearing seat holes of two bearing seats 5.2, and the two bearing seats 5.2 are fixed on the top of the rear support 4. A pull pin is arranged at one side of the rolling shaft, which is matched with the gap of the shaft neck. The pull pin 5.1 is arranged on the outside of the shell 10 and can rotate around the shaft neck. The main function of the pull pin 5.1 is to ensure the position of the mirror 5.4 relative to the small screen 3.2 and the optical axis, and to realize repeated positioning.

[0036] As shown in the figure, Figure 5As shown, the optical module 9 includes two lenses 9.2 and a lens barrel 9.1 for fixing the lenses 9.2, which can slide along the front support 6. For example, the two sides of the lens barrel 9.1 are provided with rails 9.3, and the front support 6 is provided with a sliding seat, and the rails can slide up and down on the sliding seat. The sliding seat is a binocular optical system, and the outer side of the lens barrel of the optical system serves as the sliding seat. The purpose of the up and down movement of the optical module 9 of the present application is to switch whether the human eye passes through or does not pass through the optical system to observe the target on the screen. If passing through the optical system, the target on the screen will be virtually imaged, simulating the relevant functional detection of the human eye at a 5000mm viewing distance; if not passing through the optical system, the human eye will directly observe the target on the screen, and the human eye will detect at a 300mm viewing distance, which is the main means to realize the detection of far vision and near vision of the human eye.

[0037] In the present application, the front support 6 is also provided with a limiting mechanism 7, so that the optical module 9 will not fall off the front support 6. The limiting mechanism is a spring pre-tightening pin slot fixing mechanism, which drives the pin mechanism by the pre-tightening force of the spring, so that after reaching the pre-set slot position, the pin enters the clamping slot under the driving of the spring, realizing limiting. The pin and the clamping slot are in spherical contact, and the pin and the clamping slot are separated when subjected to a certain external force.

[0038] The top of the reflecting mirror support 5.3 is also provided with a handle 8 arranged outside the shell 10, which is convenient for users to take out or move the equipment in the packaging box.

[0039] As shown in the accompanying drawings, Figure 2 As shown, the shell 10 is also provided with a flash lamp assembly 11 composed of a flashing LED lamp, a lamp holder and a switchable homogenizing glass outside the front support 6.

[0040] Due to the size difference of the pixel size of the display screen, the difference of the related detection field of view is determined, in order to meet the detection function, two screens are used for related function detection, and the two screens are switched in a set of visual system, therefore, the inventor adopts the switching mirror method to complete this process, that is, the common optical path design.

[0041] The multifunctional portable visual function detection equipment has the following advantages:

[0042] 1. High integration of visual function detection

[0043] The integrated visual function detection equipment can realize 5 function detections at 300mm viewing distance and 5000mm viewing distance respectively, that is, the detection of visual acuity, color vision, stereoscopic vision, contrast sensitivity and hidden strabismus function. In addition, the equipment also has the detection function of independent flash fusion frequency, and the equipment has a total of 11 functions, integrating many functions in one.

[0044] 2. Pixel adjustable system

[0045] The conventional visual function detection device adopts a single pixel size for detection, and cannot meet the multi-functional detection requirement, and the device matches different pixel sizes for different visual function detection requirements through a reflection device, so that the pixel size can be adjusted.

[0046] 3. Virtual imaging of optical system

[0047] The human eye observes a large screen placed at a position of 300 mm through an optical module, and virtual imaging is performed on a picture displayed by a display device to realize visual function detection of a visual distance of 5000 mm.

[0048] 4. Flexible detection scheme and detection strategy

[0049] The device has two detection capabilities:

[0050] 1) Detection is completed with the assistance of an operator or a doctor;

[0051] 2) Detection can be completely independently completed without the assistance of an operator.

[0052] 5. Small space size

[0053] For the detection of visual acuity, color vision, stereoscopic vision, contrast sensitivity and phoria at 300 mm and 5000 mm, the device adopts a common optical path design to realize integrated design and has a small space size.

[0054] The multi-functional portable visual function detection device of the present application detects visual functions at 300 mm, and mainly includes visual acuity, color vision, stereoscopic vision, contrast sensitivity, phoria and flash fusion frequency, and the detection process is shown in Embodiment 1 and Embodiment 2.

[0055] Embodiment 1

[0056] Visual acuity detection:

[0057] The optical module 9 is lifted by the handle 8, at this time, the track 9.3 on the optical module 9 slides upwards along the slide seat installed on the front support 6, reaches the designed position and is limited by the limiting mechanism 7, so that the optical module 9 cannot fall. The reflecting mirror 5.4 on the reflection assembly 5 reflects the image formed on the small screen 3.2 to the human eye, at this time, the pull pin 5.1 is in the preset position 1 in the Figure 7 , and the visual function detection is realized.

[0058] Embodiment 2

[0059] Color vision, stereoscopic vision, contrast sensitivity and phoria detection:

[0060] The pull pin 5.1 on the reflection assembly 5 is raised to adjust the pixels, the reflection assembly support 5.3 rotates in the bearing seat 5.2, bearings are placed in the bearing seat 5.2, and the pull pin 5.1 is automatically positioned on the rear support 4 to reach the designed position. The automatic positioning process is as follows: a spring pressure pin, a pressure pin hole and a guide cone hole are arranged on the reflection assembly support 5.3, when the user rotates to the position of the guide cone hole, the spring pressure pin automatically enters the pin hole through the guide cone hole to realize the positioning of the pin hole. The pull pin 5.1 is in the preset position 2, as shown in FIG. 2. Figure 8 The naked eye large screen assembly 1 is switched from the initial small screen 3.2 pixels to the large screen 1.2 pixels to realize the detection of color vision, stereoscopic vision, contrast sensitivity and hidden squint.

[0061] The detection of the visual function of the 5000mm condition mainly includes: visual acuity, color vision, stereoscopic vision, contrast sensitivity, hidden squint and flash fusion frequency, and the detection process is shown in Embodiments 3 and 4.

[0062] Embodiment 3

[0063] Visual acuity detection: the optical module 9 is in the initial position in the front support 6 and is not lifted by the handle 8.

[0064] The mirror 5.4 on the reflection assembly 5 reflects the image on the small screen 3.2 to the human eye through the lens 9.2 on the optical module 9, and the pull pin 5.1 is in the preset position 1. At this time, the human eye sees the virtual image through the optical module 9 to realize the detection of the 5000mm visual function, as shown in FIG. 3. Figure 9

[0065] Embodiment 4

[0066] Color vision, stereoscopic vision, contrast sensitivity and hidden squint detection: the pixels are adjusted, the optical module 9 is still in the front support 6, the pull pin 5.1 is raised, the reflection assembly support 5.3 rotates in the bearing seat 5.2, bearings are placed in the bearing seat 5.2, the pull pin 5.1 is automatically positioned on the rear support 4 to reach the designed position, the pull pin 5.1 is in the preset position 2, the initial small screen 3.2 is switched to the large screen 1.2, the human eye observes the virtual image of the large screen 1.2 through the optical module 9 to realize the detection of the 5000mm color vision, stereoscopic vision, contrast sensitivity and hidden squint, as shown in FIG. 4. Figure 10

[0067] Embodiment 5

[0068] Flash fusion frequency: the detection of this function is realized by the fixed flash lamp assembly 11 on the naked eye shell 10.

[0069] ​​The flash fusion frequency is an independent detection function, and the detection position is on the shell 10, and the detected person only needs to set the function to the flash fusion mode, so that the flash fusion detection of the independent flash fusion assembly on the shell 10 can be realized. All detection stations in the application are manually adjusted.

[0070] The flash fusion frequency detection mode: the degree of perception of the frequency of flicker of the human eye under different fatigue states is different, the more fatigue, the lower the recognized frequency, and the application utilizes the relationship between the human eye fatigue and the frequency. The detected person needs to adjust and record the frequency detection value that can be recognized by himself, and compare it with his standard value, so as to further judge whether he is tired.

[0071] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0072] In addition, the terms "first", "second" and the like are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features.

[0073] In the application, unless otherwise specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specified. For ordinary skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0074] In the present application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature "under", "below" and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0075] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0076] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and should not be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

[0077] The above specific embodiments of the present application do not constitute a limitation on the scope of protection of the present application. Any various other corresponding changes and modifications made according to the technical concept of the present application shall be included in the scope of protection of the claims of the present application.

Claims

1. A multifunctional portable visual function testing device, characterized by: The device comprises a large screen assembly (1), a small screen assembly (3), a reflective assembly (5), a rear bracket (4) for fixing the small screen assembly (3) and the reflective assembly (5), an optical module (9), a front bracket (6) for fixing the optical module (9), and a flash assembly (11) for detecting flash fusion frequency; The large screen assembly (1) is fixed to the front side of the rear bracket (4); the small screen assembly (3), the reflective assembly (5), the rear bracket (4), the front bracket (6), the optical module (9) and the flash assembly (11) are all encapsulated inside the housing (10); The large screen assembly (1) includes a large screen (1.2), the small screen assembly (3) includes a small screen (3.2), the reflective assembly (5) includes two reflective mirrors (5.4) capable of rotating about an axis, and the optical module (9) includes two lenses (9.2) capable of sliding along a front bracket (6); The reflective assembly (5) further comprises a reflector bracket (5.3) for fixing the reflector (5.4), the bottom of which is provided with two circular holes for the rolling shaft to pass through, the two side journals of the rolling shaft respectively cooperating with the inner rings of two rolling bearings, the outer rings of the two rolling bearings cooperating with the bearing seat holes of two bearing seats (5.2), the two bearing seats (5.2) are both fixed to the top of the rear bracket (4), and the top of the reflector bracket (5.3) is also provided with a handle (8) arranged on the outside of the housing (10); A pull pin (5.1) is provided at one side of the journal of the rolling shaft and is clearance-matched with the journal. The pull pin (5.1) is arranged outside the housing and is capable of rotating around the journal and automatically positioning itself on the rear bracket (4). The optical module (9) further comprises a lens barrel for fixing the lens (9.2), rails (9.3) are provided on both sides of the lens barrel (9.1), a slide seat is mounted on the front bracket (6), and the rails can slide up and down along the slide seat; The front bracket (6) is also provided with a limiting mechanism (7) for preventing the optical module (9) from falling off the front bracket (6).

2. The multifunctional portable visual function testing device according to claim 1, characterized in that: The large screen assembly (1) further comprises a large screen housing (1.1) fixed to the front side of the rear bracket (4); the edge of the large screen (1.2) is sleeved with a pressure strip (1.3) and then press-fitted into the large screen housing (1.1).

3. The multifunctional portable visual function testing device according to claim 2, characterized in that: Two sets of mounting blocks are provided on both sides of the large screen (1.2) in the large screen housing (1.1), and the two sets of connecting pieces are respectively sleeved on the corresponding mounting blocks. The bottom of each connecting piece is fixed to the rear bracket (4) by bolts, and a pad (2) is provided at the connection.

4. The multifunctional portable visual function testing device according to claim 1, characterized in that: The small screen assembly (3) further comprises a small screen bracket (3.1) supporting the small screen (3.2), wherein the small screen bracket (3.1) is fixed to the top of the rear bracket (4) by means of bolts.

5. The multifunctional portable visual function testing device according to claim 1, characterized in that: The flash lamp assembly (11) consists of three parts: a flashing LED lamp, a lamp holder, and a switchable homogenizing glass, and is arranged outside the front bracket (6) in the housing (10).

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