Dynamic visual acuity tester adaptable to ambient light changes and method of use thereof

Abstract

The application discloses a dynamic visual acuity detector capable of adapting to ambient light changes and a use method thereof, and belongs to the technical field of medical examination. The dynamic visual acuity detector comprises a motor, the output end of the motor is connected with a rotating disc, the motor can drive the rotating disc to rotate and adjust the rotating speed of the rotating disc, a disc is embedded on the rotating disc, an ink screen is installed on the disc, an optotype is displayed on the ink screen, and the optotype always keeps horizontal in the rotating process of the rotating disc. When the dynamic visual acuity detector is used, the power supply is turned on, the power supply drives the motor to make the rotating disc rotate, a subject observes the moving optotype at a specified position, a detection personnel adjusts the rotating speed of the rotating disc, the contrast of the optotype, the size of the optotype and the direction of the optotype, detects the dynamic visual acuity of the subject under various situations, then analyzes the test result of the subject and makes an evaluation. The dynamic visual acuity detector formed by the mechanical rotating disc and the ink screen is not influenced by the light source and refresh rate of the self-luminous electronic display, and the test result is more real and reliable.

Description

Technical Field

[0001] This invention belongs to the field of medical examination technology, specifically relating to a dynamic vision testing instrument that can adapt to changes in ambient light and its usage method. Background Technology

[0002] Dynamic visual acuity refers to the ability to identify details of a visual target when there is relative motion between the subject and the object. It is generally defined as an individual's ability to correctly identify subtle parts of a moving object. Dynamic visual acuity directly affects an observer's accuracy in judging moving targets and is an important medical examination indicator for professionals such as pilots, drivers, and athletes, as it relates to safe driving and athletic performance.

[0003] There are various methods for testing dynamic visual acuity, such as the Kirschner Rotator, Motorized Pegboard Rotator, Micromedical Technologies, Athlete-Vision, and DVA-I testing software. However, these testing software programs all use self-emissive electronic displays, and factors such as the brightness, contrast, and refresh rate of the electronic display can affect the test results. Furthermore, because the aforementioned groups of people in specific professions often operate in various lighting environments, different external light environments are particularly important in assessing dynamic visual acuity. However, current dynamic visual acuity testing equipment all uses self-emissive LCD screens, which cannot meet the stringent requirements of dynamic visual acuity testing for external light environments. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a dynamic vision tester that can adapt to changes in ambient light and its usage method, thereby solving the problem that the self-emissive electronic displays used in existing dynamic vision test methods affect the dynamic vision test results.

[0005] To achieve the above objectives, the present invention employs the following technical solution:

[0006] This invention discloses a dynamic vision tester that can adapt to changes in ambient light, including a motor, a turntable connected to the output end of the motor, a circular disk embedded in the turntable, an ink screen mounted on the circular disk, and a visual target displayed on the ink screen. The visual target remains horizontal throughout the rotation of the turntable.

[0007] Preferably, it also includes an electrical control box and a bracket, with both the electrical control box and the motor mounted on the bracket.

[0008] More preferably, a timing pulley I is fixed on the bracket, a timing pulley II is fixed on the back of the disc, and a timing belt is connected to timing pulley I and timing pulley II.

[0009] Preferably, the turntable includes an upper connecting plate, a receiving plate, and a lower connecting plate connected in sequence, and the upper connecting plate, the receiving plate, and the lower connecting plate together form a circular turntable.

[0010] More preferably, the upper connecting plate, the receiving plate, and the lower connecting plate are connected by screws or fasteners.

[0011] Preferably, the upper connecting plate, the receiving plate, and the lower connecting plate can all be folded in half again via hinges.

[0012] Preferably, the dynamic vision tester is connected to a computer, which is equipped with dynamic vision assessment software. The dynamic vision assessment software can adjust the rotation speed of the turntable, the contrast of the visual target, the size of the visual target, and the direction of the visual target, and analyze and evaluate the test results of the subject.

[0013] More preferably, the e-ink screen has a built-in power supply and a switch on the back, and the e-ink screen transmits data to the computer via radio signals.

[0014] Preferably, the dynamic vision tester is also connected to a transponder, which acquires the dynamic vision test results of the subject and transmits the dynamic vision test results to a computer.

[0015] The present invention also discloses a method for using the above-mentioned dynamic vision tester that can adapt to changes in ambient light. During dynamic vision testing, the turntable rotates, and the subject observes the movement of the optotype on the turntable at a designated position. The dynamic vision of the subject is tested by adjusting the direction of the optotype, the rotation speed of the turntable, the contrast of the optotype, or the size of the optotype.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention provides a dynamic vision testing device that adapts to changes in ambient light. The device utilizes a mechanical turntable combined with a non-emissive e-ink screen to display visual targets. The targets on the e-ink screen remain horizontal while the turntable rotates, ensuring their shape does not change. Simultaneously, the targets on the e-ink screen change with variations in ambient light, eliminating the influence of self-emissive electronic displays on dynamic vision testing. The turntable design allows adjustment of the target's movement speed and display time, solving the problem of existing dynamic vision testing devices requiring large screens to accommodate fast target movements, leading to portability issues and high costs. Compared to conventional dynamic vision testing software with self-emissive electronic displays, the dynamic vision testing device combining a mechanical turntable and e-ink targets provides a more realistic demonstration. The targets on the e-ink screen are unaffected by the display's light source and refresh rate, resulting in more accurate and reliable test results. The device is also more convenient to use, easier to carry, and more suitable for industrial production.

[0018] Furthermore, the turntable can be disassembled into an upper connecting plate, a receiving plate, and a lower connecting plate. The upper connecting plate, the receiving plate, and the lower connecting plate can be further folded by hinges, which can reduce the size of the device and make the dynamic vision tester more portable during transportation.

[0019] Furthermore, the mechanical turntable and non-illuminated e-ink screen are combined with dynamic vision assessment software on a computer. The computer controls the rotation speed, direction, and contrast of the visual targets and judges the results, making the dynamic vision tester have a wider detection range and be more intelligent and diverse.

[0020] The present invention provides a method for using a dynamic vision tester that can adapt to changes in ambient light. It can detect the subject's ability to capture visual targets in different states on a mechanical turntable under different situations. At the same time, the test results are not affected by the light of the self-emissive electronic display itself, making it more scientific and accurate. Attached Figure Description

[0021] Figure 1 This is a front structural diagram of the dynamic vision testing device of the present invention;

[0022] Figure 2 This is a schematic diagram of the rear structure of the dynamic vision testing instrument of the present invention;

[0023] Figure 3 A diagram of a transponder used in conjunction with a dynamic vision testing device;

[0024] Figure 4 This is a frontal three-dimensional assembly diagram of the dynamic vision testing device of the present invention.

[0025] Figure 5 This is a three-dimensional assembly diagram of the back of the dynamic vision testing instrument of the present invention.

[0026] Among them: 1. Turntable; 1-1. Upper connecting plate; 1-2. Support plate; 1-3. Lower connecting plate; 2. Disc; 3. Ink screen; 4. Bracket; 4-1. Fixed bracket; 4-2. Support bracket; 5. Synchronous pulley I; 6. Motor; 7. Electrical control box; 8. Synchronous pulley II; 9. Synchronous belt. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings:

[0030] This invention provides a dynamic vision testing device that can adapt to changes in ambient light, such as... Figure 1 and Figure 2The system includes a support frame 4, which provides support for the entire dynamic vision testing device. The support frame 4 houses a motion component, a motor 6, and an electrical control box 7. The electrical control box 7 supplies power to the motor 6 and receives control signals from the computer to control the start, stop, and rotation speed of the motor 6. The motor 6 drives the motion component. The motion component includes a turntable 1, a disc 2, and an e-ink screen 3. The turntable 1 is connected to the output of the motor 6, which drives the turntable 1 to rotate circumferentially and adjusts the rotation speed of the turntable 1 according to the control signals from the electrical control box 7. The disc 2 is embedded in the turntable 1, and the e-ink screen 3 is mounted on the disc 2. The e-ink screen 3 has a built-in power supply and a switch on its back, transmitting data wirelessly to the computer. The e-ink screen 3 displays visual targets on its front, which remain horizontal throughout the rotation of the turntable 1. The brightness and color of the visual targets change with variations in ambient light, thus eliminating the influence of the light source and refresh rate of the self-emissive electronic display on dynamic vision testing. Figure 3 The dynamic vision testing device is connected to a transponder and a computer equipped with dynamic vision assessment software. The dynamic vision assessment software can control the electrical control box 7. The computer can control the direction of the visual target, the rotation speed of the turntable 1, the contrast of the visual target, or the size of the visual target. The transponder acquires the dynamic vision test results of the subject and transmits the results to the computer. The computer verifies and analyzes the dynamic vision test results of the subject through the dynamic vision assessment software and generates a dynamic vision test report, making the entire dynamic vision testing process more scientific, convenient, and intelligent.

[0031] The present invention provides a method for using a dynamic vision testing instrument that can adapt to changes in ambient light. During dynamic vision testing, the power supply of the control box 7 is first turned on. A computer equipped with dynamic vision assessment software is connected to the control box 7 and sends a signal to drive the motor 6 to rotate the turntable 1. The subject observes the moving target on the turntable 1 at a designated position. By adjusting the ambient light, the rotation speed of the turntable 1, the contrast of the target, the size of the target, and the direction of the target, the ability of the subject to capture, decompose, and perceive the moving target image when observing the moving target in various situations is tested. Then, the test results of the subject are analyzed and evaluated.

[0032] Example 1

[0033] This invention provides a dynamic vision testing device that can adapt to changes in ambient light, such as... Figure 4 and Figure 5The system includes a support bracket 4, which consists of a fixed bracket 4-1 and a supporting bracket 4-2. The supporting bracket 4-2 can be quickly detached from the fixed bracket 4-1, allowing the system to be portable when not in use. The fixed bracket 4-1 is equipped with a motor 6 and an electrical control box 7. The electrical control box 7 supplies power to the motor 6 and receives control signals from a computer to control the motor's start / stop and rotation speed. The output end of the motor 6 is connected to a turntable 1, which drives the turntable 1 to rotate circumferentially. The motor 6 adjusts the rotation speed of the turntable 1 according to the control signals from the electrical control box 7. The turntable 1 includes an upper connecting plate 1-1, a receiving plate 1-2, and a lower connecting plate 1-3 connected from top to bottom by screws. Alternatively, the screws can be replaced with latches. The upper connecting plate 1-1, the receiving plate 1-2, and the lower connecting plate 1-3 together form a circular turntable 1. The center of the receiving plate 1-2 is also the center of the turntable 1, and the receiving plate 1-2 is connected to the output end of the motor 6. Furthermore, the upper connecting plate 1-1, the receiving plate 1-2, and the lower connecting plate 1-3 can be disassembled and then folded again via hinges. Disassembling and folding the turntable 1 facilitates transportation of the dynamic vision testing instrument. A disc 2 is embedded at the end of the receiving plate 1-2 furthest from the center of the turntable 1. An e-ink screen 3 is mounted on the disc 2. The e-ink screen 3 has a built-in power supply, a switch on the back, and displays visual targets on the front. The e-ink screen 3 transmits data wirelessly to the computer. The brightness and color of the visual targets displayed on the e-ink screen 3 change with variations in ambient light, thus eliminating the influence of the light source and refresh rate of the self-emissive electronic display on dynamic vision testing. A synchronous pulley I5 is fixed on the support bracket 4-2. The synchronous pulley I5 does not rotate relative to the support bracket 4-2. A synchronous pulley II8 is fixed on the back of the disc 2. The synchronous pulley II8 does not rotate relative to the disc 2. The synchronous pulley I5 and the synchronous pulley II8 are connected by the same synchronous belt 9. When the disc 1 rotates, the synchronous pulley II8 drives the synchronous belt 9 to rotate around the synchronous pulley I5. The rotation of the synchronous pulley I5 with the synchronous belt 9 keeps the visual target on the disc 2 horizontal. The dynamic vision tester is connected to a transponder and a computer equipped with dynamic vision assessment software. The computer controls the direction of the visual target, the rotation speed of the disc 1, the contrast of the visual target, and the size of the visual target. The transponder acquires the dynamic vision test results of the subject and transmits the results to the computer. The computer uses the result assessment software to verify and analyze the dynamic vision test results of the subject and generate a dynamic vision test report.

[0034] This invention provides a method for using a dynamic vision testing instrument that adapts to changes in ambient light. When performing dynamic vision testing, the power supply to the control box 7 is turned on. A computer equipped with dynamic vision assessment software connects to the control box 7 and sends a signal, driving the motor 6 to rotate the turntable 1. The optotype moves with the turntable 1. The subject observes the movement of the optotype on the turntable 1 from a designated position. The testing personnel adjust the rotation speed and optotype shape of the turntable 1 via the computer. The test is conducted to assess the subject's ability to distinguish optotypes of different shapes as the rotation speed of the turntable 1 increases from low to high. The testing personnel also adjust the contrast and shape of the optotype via the computer to assess the subject's ability to distinguish optotypes of different contrasts under the condition that the turntable 1 rotates at a constant speed. The testing personnel further adjust the rotation speed and optotype shape of the turntable 1 via the computer. The test assesses the subject's ability to distinguish targets of different contrasts at different speeds on a rotating disk 1, using both contrast and shape parameters. The test involves adjusting the size and shape of the targets via a computer to assess the subject's ability to distinguish targets of different sizes while the disk 1 rotates at a constant speed. The test also involves adjusting the rotation speed, size, and shape of the targets via a computer to assess the subject's ability to distinguish targets of different sizes at different speeds. Finally, the test involves the subject transmitting the results to a computer via a transponder, where the computer analyzes and evaluates the results using assessment software.

[0035] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A dynamic vision testing instrument adaptable to changes in ambient light, characterized in that, The motor (6) is connected with the rotating disc (1), the rotating disc (1) comprises the upper connecting plate (1-1), the bearing plate (1-2) and the lower connecting plate (1-3) connected in sequence, and the upper connecting plate (1-1), the bearing plate (1-2) and the lower connecting plate (1-3) jointly form the circular rotating disc (1); the bearing plate (1-2) of the rotating disc (1) is embedded with the disc (2) at an end away from the center, the disc (2) is provided with the ink screen (3), the ink screen (3) is provided with the optotypes, and the optotypes remain horizontal during the rotation of the rotating disc (1); the electric control box (7) and the support (4) are further included, the electric control box (7) and the motor (6) are arranged on the support (4), the support (4) is composed of the fixed support (4-1) and the supporting support (4-2), the supporting support (4-2) is further provided with the synchronous pulley I (5), the synchronous pulley I (5) does not rotate relative to the supporting support (4-2), the back of the disc (2) is fixed with the synchronous pulley II (8), the synchronous pulley II (8) does not rotate relative to the disc (2), the synchronous pulley I (5) and the synchronous pulley II (8) are connected with the same synchronous belt (9), the synchronous pulley II (8) drives the synchronous belt (9) to rotate around the synchronous pulley I (5) when the rotating disc (1) rotates, and the rotation of the synchronous belt (9) makes the optotypes on the disc (2) remain horizontal.

2. The dynamic visual acuity tester of claim 1, wherein, The upper connecting plate (1-1), the bearing plate (1-2) and the lower connecting plate (1-3) are connected through screws or buckles.

3. The dynamic visual acuity tester of claim 1, wherein, The upper connecting plate (1-1), the bearing plate (1-2) and the lower connecting plate (1-3) can be refolded through hinges.

4. The dynamic visual acuity tester of any one of claims 1-3, wherein, The dynamic visual acuity tester is connected with a computer end, the computer end is provided with a dynamic visual acuity evaluation software, the dynamic visual acuity evaluation software can adjust the rotating speed of the rotating disc (1), the contrast of the optotypes, the size of the optotypes and the direction of the optotypes, analyze the test results of the subject and make an evaluation.

5. The dynamic visual acuity tester of claim 4, wherein, The ink screen (3) is provided with a switch on the back, and the ink screen (3) transmits data to the computer end in the form of wireless signals.

6. The dynamic visual acuity tester of claim 4, wherein, The dynamic visual acuity tester is further connected with a transponder, the transponder obtains the dynamic visual acuity test results of the subject and transmits the dynamic visual acuity test results to the computer end.

7. The use of a dynamic visual acuity tester that can adapt to changes in ambient light according to any one of claims 1-6, characterized in that, During the dynamic visual acuity test, the rotating disc (1) rotates, the subject observes the movement of the optotypes on the rotating disc (1) at a specified position, and the dynamic visual acuity of the subject is detected by adjusting the direction of the optotypes, the rotating speed of the rotating disc (1), the contrast of the optotypes or the size of the optotypes.

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