CN220275571U - Vision and vision function inspection device capable of switching between various distances - Google Patents
Vision and vision function inspection device capable of switching between various distances Download PDFInfo
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- CN220275571U CN220275571U CN202221116712.6U CN202221116712U CN220275571U CN 220275571 U CN220275571 U CN 220275571U CN 202221116712 U CN202221116712 U CN 202221116712U CN 220275571 U CN220275571 U CN 220275571U
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- 230000004438 eyesight Effects 0.000 title claims abstract description 68
- 238000007689 inspection Methods 0.000 title claims description 21
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 230000004382 visual function Effects 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims description 18
- 230000000007 visual effect Effects 0.000 claims description 18
- 210000003128 head Anatomy 0.000 claims description 15
- 210000004087 cornea Anatomy 0.000 claims description 11
- 210000001061 forehead Anatomy 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000035945 sensitivity Effects 0.000 claims description 3
- 230000004304 visual acuity Effects 0.000 claims 1
- 238000011156 evaluation Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- 208000001491 myopia Diseases 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 238000012790 confirmation Methods 0.000 description 2
- 230000001815 facial effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Abstract
The utility model provides a vision and visual function checking device capable of switching among various distances, belonging to the field of vision and visual function detection and evaluation. The vision measuring device with simple structure and adjustable sighting target distance is designed, the sighting target is moved through the movable mechanical arm structure or the movable guide rail, the sighting target is adjustable at any time, the accuracy of measurement is improved due to the arrangement of the headstock, the vision is measured in a large range, and the vision measuring device meets the evaluation requirements on the middle-distance vision and vision quality.
Description
Technical Field
The utility model belongs to the field of vision and visual function detection and evaluation, and particularly relates to a vision and visual function inspection device capable of switching among various distances.
Background
The existing vision measuring tool mainly comprises far vision measurement and near vision measurement, and is mainly used for evaluating the vision condition of far vision condition and near vision condition of writing, and acquiring vision quality information without distance.
The distance chart is typically measured at a distance of 250-600 cm and for a particular product is fixed at a particular value, for example, the standard measurement distance for a 5 meter chart is 5 meters. Typically, the distance between the near vision chart is measured at 25-40 cm, and for a particular chart, the standard distance is fixed, such as 33 cm or 40 cm. The measuring tools for distance and near vision are typically two tools in the actual measuring process. There are also vision inspection lamp boxes which are commonly used at present and can be switched between far and near (switching between two distances of 5 meters and 40 centimeters) by placing the far and near vision charts in the same lamp box and switching between two detection distances through an optical reflection principle.
The prior vision inspection device mainly has the following problems:
1. the checking distance is single, and most of the checking distances can only meet one distance;
2. only the two dimensions of far and near vision are considered, ignoring the need for assessment of intermediate and visual conditions. Along with the change of life and work habits of people, not only good far vision (scenes such as outdoor activities and driving) is required, but also long-time good near vision (mobile phone watching and reading and writing) is required, and also good medium vision (computer watching and television watching and the like) is required, and the current vision inspection tool cannot well meet the evaluation requirements on medium-distance vision and vision quality.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provide a vision and visual function inspection device capable of switching among various distances.
The vision inspection device comprises the following components and connections: the visual target electronic display device comprises a head frame 1, a base 2, a visual target bracket 3, a visual target position changing component, a visual target card 8 or a visual target electronic display screen 9;
the headstock l is connected with the base 2, and the sighting target support 3 is connected with the base 2 through a sighting target position changing component: a sighting target card 8 or a sighting target electronic display screen 9 is arranged on the sighting target bracket 3; the optotype holder 3 performs distance conversion on the base 2 by an optotype position conversion means.
The device may further comprise a feedback device 5 and a signal control processing part 6, wherein the feedback device 5 is electrically connected with the signal control processing part 6, and is used for performing key operation by the inspected person or performing operation by the inspected person according to feedback of the inspected person according to the equipment prompt, and is used for feeding information of the vision inspection condition of the inspected person back to the signal control processing part of the vision inspection device. The alternative feedback device 5 may also perform feedback by touching the corresponding buttons via a touch display.
The optotype support 3 is provided with an optotype card 8 or an optotype electronic display screen 9, the optotype can be printed on the optotype card, the optotype card is arranged on the optotype support, the optotype can be displayed on the electronic screen, and the electronic display screen is arranged on the optotype support.
The optotype position changing component is a movable mechanical arm structure 7, the optotype support is connected with the guide rail 4 to move or a plug and a socket are arranged below the optotype support, and the position change of the optotype is realized in one mode of arranging the socket on the base.
The sighting mark support 3 carries out distance transformation on the base 2 through the mode of the movable mechanical arm structure 7 or the guide rail 4, and when the distance transformation is carried out through the guide rail, the movement of the sighting mark support can be slid in a manual mode or can be driven by a motor: the guide rail may be driven by a motor electrically connected to the signal control processing means 6 or directly by manually sliding the guide rail.
One end of the movable mechanical arm structure 7 is connected with the base 2 through a shaft structure which can rotate and is fixed at a certain angle, the other end of the movable mechanical arm structure 7 is also connected with a sighting mark bracket through a shaft structure which can rotate and is fixed at a certain angle, and the sighting mark bracket is used for placing a sighting mark card or a sighting mark display screen which is vertical to the base 2; the middle of the movable mechanical arm structure 7 is provided with the supporting rods 7-2, two sides of the optional supporting rods are supported in an auxiliary mode through the other two auxiliary supporting rods 7-3 and 7-4, triangles are formed on the two sides of the mechanical arm, so that the mechanical arm has good stability, and the distance of the sighting target support from one position of the base to the other position can be changed by turning the movable mechanical arm structure back and forth, and measurement of middle and near vision is achieved.
Further in this application, for the embodiment that adopts printing optotype card, carved with the scale on base 2, correspond different scales simultaneously and contain the optotype of a plurality of distances in the optotype card, guarantee that the optotype that adopts corresponds unanimously with the distance scale that the optotype is located at every time during the measurement. The optotype cards placed at different positions display optotypes of different sizes or the display screens placed at different positions display optotypes of different sizes.
The optotype cards placed at different positions display optotypes of different sizes, specifically by setting corresponding examination optotypes under different measurement distances in different areas of the same optotype card or by setting a plurality of optotype cards capable of turning pages.
For a device adopting an electronic screen sighting target, scales are carved on the base 2, and a user aligns with the corresponding distance scales through a sliding sighting target bracket to realize vision measurement at a certain distance; the distance can be identified by a sensing device arranged on the bracket and the base 2, and when the motor drives the bracket to move forwards and backwards, the sensing device obtains a signal when the distance between the motor and the bracket is smaller than a preset value, and controls the motor to stop staying at the current position. Displaying the current distance on the screen in the moving process, and simultaneously automatically switching the size of the sighting target in the display screen according to the sighting target distance; so that the continuous measuring distance is changed within a certain short distance and medium distance range.
The headstock and the base and the sighting mark support and the base can be optionally connected through the hinge, and in a state of not using, the support and the sighting mark support can be flatly placed and attached to the base, so that the sighting mark support is convenient to carry. The headstock can fix the position of head so that the distance between eyes and optotype is fixed, and further the headstock can be adjusted in height through the upper and lower telescoping device to adapt to the position that the eyes surface can be calibrated to zero distance by people with different facial contours. Optionally, the head frame can be fixedly connected with a optometry head or an eyepiece disc, and different lenses are changed when vision and visual function measurement is performed. The headstock has a vertical scale on one side for calibration.
In the printed optotype card optotype or the optotype displayed on the electronic screen, besides the universal standard E-character optotype, the C-character optotype, the child vision optotype and the letter vision optotype, optotypes suitable for visual function examination such as cross line optotypes, graphic optotypes, contrast sensitivity optotypes and the like can be added, and the optotype is not limited.
The near vision range is 5-200 cm in the definition of this application, through setting up movable mechanical arm structure and the position of guide rail on the base, the effective vision measurement range of device can realize freely adjusting between 5-200 cm.
The vision inspection device of the application may further include a feedback device 5, which may be a feedback handle, and is configured to be operated by the inspector according to the device prompt or operated by the inspector according to feedback of the inspector, and configured to feed information seen by the inspector back to the device control processing unit for recording feedback information, for example, when the user sees the visual target, the user presses a feedback handle confirmation button. In addition, a touch screen can be selected as a feedback device, and a corresponding button is touched to perform feedback operation. The feedback device 5 can also select visual inspection items and send control instructions, and the control instructions are sent by connecting the motor to control the start and stop of the motor.
Further, optionally, cameras are connected and arranged on the left frame side and the right frame side of the headstock, a forehead distance adjusting device 11 is arranged at the position right above the forehead, cornea images of a person to be inspected are automatically acquired through the cameras 10, and the acquired cornea front surface position signal control processing part 6 sends instructions to the headstock position control motor to adjust the position of the distance adjusting device, so that the forehead distance adjusting device moves back and forth, and the position of the cornea front surface is adjusted to the zero distance position of the base.
Compared with the prior art, the utility model has the beneficial effects that: the vision measuring device with simple structure and adjustable sighting target distance is designed, the sighting target is moved through the movable mechanical arm structure or the movable guide rail, the sighting target is adjustable at any time, the accuracy of measurement is improved due to the arrangement of the headstock, the vision is measured in a large range, the evaluation requirements for medium-distance vision and vision quality are met, and the important difficult problem in the industry is broken through and solved.
Drawings
FIG. 1 is a schematic illustration of the vision inspection apparatus of the present application and variations thereof;
fig. 2 is another schematic view of the vision inspection apparatus of the present application.
Reference numerals: the device comprises a headstock 1, a base 2, a sighting target support 3, a movable guide rail 4, a movable mechanical arm structure 7, a support rod 7-2, two auxiliary support rods 7-3 and 7-4, a feedback device 5, a signal control processing part 6, a sighting target card 8, a sighting target electronic display screen 9, a camera 10 and a forehead distance adjusting device 11.
Detailed Description
The vision measuring device of the present application will be described in further detail with reference to the accompanying drawings: with reference to figures 1-2 of the drawings,
the vision inspection device comprises the following components and connections: the visual target electronic display device comprises a head frame 1, a base 2, a visual target bracket 3, a visual target position changing component, a visual target card 8 or a visual target electronic display screen 9;
the head frame 1 is connected with the base 2, and the sighting target bracket 3 is connected with the base 2 through a sighting target position changing component; a sighting target card 8 or a sighting target electronic display screen 9 is arranged on the sighting target bracket 3; the optotype holder 3 performs distance conversion on the base 2 by an optotype position conversion means.
The device may further comprise a feedback device 5 and a signal control processing part 6, wherein the feedback device 5 is electrically connected with the signal control processing part 6, and is used for performing key operation by the inspected person or performing operation by the inspected person according to feedback of the inspected person according to the equipment prompt, and is used for feeding information of the vision inspection condition of the inspected person back to the signal control processing part of the vision inspection device. The alternative feedback device 5 may also perform feedback by touching the corresponding buttons via a touch display.
The optotype support 3 is provided with an optotype card 8 or an optotype electronic display screen 9, the optotype can be printed on the optotype card, the optotype card is arranged on the optotype support, the optotype can be displayed on the electronic screen, and the electronic display screen is arranged on the optotype support. Optionally, a plurality of sighting target cards of different sizes can be stacked on the sighting target support, under different test distances, a plurality of sighting target cards can be turned over the page on the sighting target support, specifically can be perforated on the sighting target card and fixed on the sighting target support to realize the page turning function, and meanwhile, the display size of the electronic screen sighting target can be adjusted under different distances.
In further embodiments, the corresponding content may be displayed by the same optotype card at different distances, optionally with multiple regions of the optotype card, and corresponding examination optotypes at different distances are set, with the user viewing different regions of the optotype card correspondingly in the vision measurements at different distances.
The optotype position changing component is a movable mechanical arm structure 7, the optotype support is connected with the guide rail 4 to move or a plug and a socket are arranged below the optotype support, and the position change of the optotype is realized in one mode of arranging the socket on the base.
The sighting mark bracket 3 performs distance conversion on the base 2 through a movable mechanical arm structure 7 or a guide rail 4, and when the distance conversion is performed through the guide rail, the sighting mark bracket can slide manually or can be driven by a motor; the guide rail may be driven by a motor electrically connected to the signal control processing means 6 or directly by manually sliding the guide rail.
One end of the movable mechanical arm structure 7 is connected with the base 2 through a shaft structure which can rotate and is fixed at a certain angle, the other end of the movable mechanical arm structure 7 is also connected with a sighting mark bracket through a shaft structure which can rotate and is fixed at a certain angle, and the sighting mark bracket is used for placing a sighting mark card or a sighting mark display screen which is vertical to the base 2; the middle of the movable mechanical arm structure 7 is provided with the supporting rods 7-2, two sides of the optional supporting rods are supported in an auxiliary mode through the other two auxiliary supporting rods 7-3 and 7-4, triangles are formed on the two sides of the mechanical arm, so that the mechanical arm has good stability, and the distance of the sighting target support from one position of the base to the other position can be changed by turning the movable mechanical arm structure back and forth, and measurement of middle and near vision is achieved.
Further in this application, for the embodiment that adopts printing optotype card, carved with the scale on base 2, correspond different scales simultaneously and contain the optotype of a plurality of distances in the optotype card, guarantee that the optotype that adopts corresponds unanimously with the distance scale that the optotype is located at every time during the measurement. The optotype cards placed at different positions display optotypes of different sizes or the display screens placed at different positions display optotypes of different sizes.
For a device adopting an electronic screen sighting target, scales are carved on the base 2, and a user aligns with the corresponding distance scales through a sliding sighting target bracket to realize vision measurement at a certain distance; the distance can be identified by a sensing device arranged on the bracket and the base 2, and when the motor drives the bracket to move forwards and backwards, the sensing device obtains a signal when the distance between the motor and the bracket is smaller than a preset value, and controls the motor to stop staying at the current position. Displaying the current distance on the screen in the moving process, and simultaneously automatically switching the size of the sighting target in the display screen according to the sighting target distance; so that the continuous measuring distance is changed within a certain short distance and medium distance range.
The headstock and the base and the sighting mark support and the base can be optionally connected through the hinge, and in a state of not using, the support and the sighting mark support can be flatly placed and attached to the base, so that the sighting mark support is convenient to carry. The headstock can fix the position of head so that the distance between eyes and optotype is fixed, and further the headstock can be adjusted in height through the upper and lower telescoping device to adapt to the position that the eyes surface can be calibrated to zero distance by people with different facial contours. Optionally, the head frame can be fixedly connected with a optometry head or an eyepiece disc, and different lenses are changed when vision and visual function measurement is performed. The headstock has a vertical scale on one side for calibration.
In the printed optotype card optotype or the optotype displayed on the electronic screen, besides the universal standard E-character optotype, the C-character optotype, the child optotype, the letter optotype and the contrast sensitivity optotype, optotypes suitable for visual function examination such as cross line optotypes, graphic optotypes and the like can be added, and the optotype is not limited.
The near vision range is 5-200 cm in the definition of this application, through setting up movable mechanical arm structure and the position of guide rail on the base, the effective vision measurement range of device can realize freely adjusting between 5-200 cm.
The vision inspection device of the application may further include a feedback device 5, which may be a feedback handle, and is configured to be operated by the inspector according to the device prompt or operated by the inspector according to feedback of the inspector, and configured to feed information seen by the inspector back to the device control processing unit for recording feedback information, for example, when the user sees the visual target, the user presses a feedback handle confirmation button. The alternative feedback device 5 may also perform feedback by touching the corresponding buttons via a touch display. The feedback device 5 can also select visual inspection items and send control instructions, and the control instructions are sent by connecting with the motor to control the start and stop of the motor.
Further, optionally, cameras are connected and arranged on the left frame side and the right frame side of the headstock, a forehead distance adjusting device 11 is arranged at the position right above the forehead, cornea images of a person to be inspected are automatically acquired through the cameras 10, and the acquired cornea front surface position signal control processing part 6 sends instructions to the headstock position control motor to adjust the position of the distance adjusting device, so that the forehead distance adjusting device moves back and forth, and the position of the cornea front surface is adjusted to the zero distance position of the base.
In fig. 1, (a) is in a vision measurement state of 25cm, in fig. 1, (b) is in a vision measurement state of 60cm, the head frame and the base can be optionally connected through a hinge, and in fig. 1, (c) is schematically shown in a state that the device is in a non-use state, and the sighting target bracket and the head frame can be placed flat and attached to the base.
Further, cameras are connected and arranged on the left frame side and the right frame side of the headstock, a forehead distance adjusting device (11) is arranged at the forehead placing position right above the headstock, cornea images of a checked person are automatically collected through the cameras, and the acquired cornea front surface position signal control processing part 6 sends instructions to the headstock position control motor to adjust the position of the distance adjusting device, so that the position of the cornea front surface is adjusted to the zero distance position of the base.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present application, unless otherwise indicated, the terms "upper," "lower," "left," "right," "inner," "outer," and the like are used for convenience in describing the present utility model and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Finally, it should be noted that the above-mentioned technical solution is only one embodiment of the present utility model, and various modifications and variations can be easily made by those skilled in the art based on the application methods and principles disclosed in the present utility model, and are not limited to the methods described in the above-mentioned specific embodiments of the present utility model, therefore, the foregoing description is only preferred, and not meant to be limiting.
Claims (10)
1. A visual acuity and visual function inspection device capable of switching among various distances is characterized by comprising the following components and connection:
the visual target electronic display device comprises a head frame (1), a base (2), a visual target bracket (3), a visual target position changing component, a visual target card (8) or a visual target electronic display screen (9);
the head frame (1) is connected with the base (2), and the sighting target bracket (3) is connected with the base (2) through a sighting target position changing component; a sighting target card (8) or a sighting target electronic display screen (9) is arranged on the sighting target bracket (3); the sighting target bracket (3) performs distance conversion on the base (2) through a sighting target position conversion component, so that the sighting target card (8) or the sighting target electronic display screen (9) is placed at different positions of the base (2);
the sighting target cards (8) placed at different positions of the base (2) display sighting targets with different sizes or the sighting target electronic display screens (9) placed at different positions of the base (2) display the sighting targets with different sizes.
2. The vision and visual function testing device capable of switching between a plurality of distances according to claim 1, wherein: the optotype position changing component is one of a movable mechanical arm structure (7), an optotype support connecting guide rail (4) moving or a plug and a socket arranged on a base under the optotype support.
3. The vision and visual function testing device capable of switching between a plurality of distances according to claim 1, wherein: the head frame is fixedly connected with a optometry head or an eyepiece disc, and different lenses are changed when vision and visual function measurement is carried out.
4. A vision, visual function testing device switchable between a plurality of distances according to claim 3, wherein: the optotype cards placed at different positions display optotypes of different sizes, specifically by setting corresponding examination optotypes under different measurement distances in different areas of the same optotype card or by setting a plurality of optotype cards capable of turning pages.
5. The vision and visual function testing device capable of switching between a plurality of distances according to claim 1, wherein: the inspection apparatus further comprises a feedback device (5) electrically connected to the signal control processing means (6), and the signal control processing means is used for feeding back information of the vision inspection condition of the inspected person to the vision inspection apparatus according to the key operation of the inspected person or the operation of the inspected person according to the feedback of the inspected person according to the equipment prompt.
6. The vision and visual function testing device capable of switching between a plurality of distances according to claim 1, wherein: the feedback device (5) is used for feeding back by touching the corresponding buttons through the touch display screen, and feeding back the information of the vision examination condition of the checked person to the signal control processing part of the vision examination device.
7. The vision and visual function testing device capable of switching between a plurality of distances according to claim 2, wherein: one end of the movable mechanical arm structure (7) is connected with the base (2) through a shaft structure which can rotate and is fixed at a certain angle, the other end of the movable mechanical arm structure (7) is also connected with a sighting target bracket through a shaft structure which can rotate and is fixed at a certain angle, and the sighting target bracket is used for placing a sighting target card or a sighting target display screen; the movable mechanical arm structure can be turned back and forth, so that the middle and close distance between the sighting mark support and the zero distance position of the base can be changed.
8. The vision and visual function testing device capable of switching between a plurality of distances according to claim 1, wherein: in the mode of connecting the movable mechanical arm structure (7) with the base (2), the headstock is connected with the base through a hinge, and the headstock and the bracket can be completely flattened and attached to the base when the headstock and the bracket are not used.
9. The vision and visual function testing device capable of switching between a plurality of distances according to claim 1, wherein: the left frame side and the right frame side of the headstock are connected and provided with cameras (10), and a forehead distance adjusting device is arranged at the forehead placing position right above the headstock; the cornea image of the checked person is automatically acquired by the camera (10), and the acquired cornea front surface position signal control processing component (6) sends an instruction to the headstock position control motor to adjust the position of the distance adjusting device.
10. The vision and visual function testing device capable of switching between a plurality of distances according to claim 1, wherein: the optotype card optotype or the optotype displayed by the electronic screen is one of an E-character optotype, a C-character optotype, a child vision optotype, a letter vision optotype, a contrast sensitivity optotype or a graphic optotype.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221116712.6U CN220275571U (en) | 2022-05-11 | 2022-05-11 | Vision and vision function inspection device capable of switching between various distances |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221116712.6U CN220275571U (en) | 2022-05-11 | 2022-05-11 | Vision and vision function inspection device capable of switching between various distances |
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| CN220275571U true CN220275571U (en) | 2024-01-02 |
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| CN202221116712.6U Active CN220275571U (en) | 2022-05-11 | 2022-05-11 | Vision and vision function inspection device capable of switching between various distances |
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| CN (1) | CN220275571U (en) |
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- 2022-05-11 CN CN202221116712.6U patent/CN220275571U/en active Active
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