CN211066541U - Visual chart installation adjusting device and visual inspection device - Google Patents
Visual chart installation adjusting device and visual inspection device Download PDFInfo
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- CN211066541U CN211066541U CN201921045223.4U CN201921045223U CN211066541U CN 211066541 U CN211066541 U CN 211066541U CN 201921045223 U CN201921045223 U CN 201921045223U CN 211066541 U CN211066541 U CN 211066541U
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Abstract
The utility model relates to a visual chart installation adjusting device and eyesight inspection device, visual chart installation adjusting device, first magnet and second magnet including inter attraction, first magnet fixed mounting is in the back of visual chart, the second magnet is installed in the backup pad that is used for installing the visual chart. The vision test device comprises the visual chart installation and adjustment device. The utility model discloses a direction that visual target in visual chart installation adjusting device can change different visual charts and the transform visual chart carries out many times inspection and realizes the true visual inspection to being examined the people, and transform inspection distance and transform visual target size in the testing process, makes the visual chart structure can recite the nature and reduce, can only rely on true vision to identify the best visual target by the inspection person, can't pretend visual acuity, can effectively discover pretend visual acuity and overcome pretend high vision.
Description
Technical Field
The utility model belongs to the technical field of the visual acuity test, specifically speaking relates to an eyesight test chart installation adjusting device and visual acuity test device.
Background
The eyesight is one of the commonly used indexes of human body function states, and China usually adopts the GB 11533 standard logarithmic visual acuity chart to test the eyesight, but the following problems mainly exist in the process of testing the eyesight:
the visual inspection results depend on subjective cooperation and mastery, and unrealistic conditions exist. The visual acuity test method is characterized in that the visual acuity test is carried out through a conventional visual acuity chart, the best visual target with more than half of the visual acuity test distance can be correctly identified as the visual acuity at the standard test distance of 5 m, and the best main visual acuity test distance is the real visual acuity of a tested person. Because the test process highly depends on subjective cooperation and mastery, and the directions and the sequences of the visual targets of various visual acuity of the visual chart are fixed, when the mastery is not true, the test result can not reflect the true visual acuity. For example: the direction of the optotype with higher vision in line 1-line 2 is memorized to disguise high vision, or the optotype with low vision is misrecognized to disguise low vision. The disguised low vision is an important problem of visual inspection, even if the visual deterioration is found to be unexplainable and the disguise is suspected, clear judgment and conclusion cannot be made due to lack of basis, and a false result is adopted.
SUMMERY OF THE UTILITY MODEL
The utility model discloses visual inspection result that exists is unreal, visual chart sighting mark direction and order are fixed to lead to pretending above-mentioned not enough such as eyesight easily to current visual inspection in-process, provide a visual chart installation adjusting device and visual inspection device, through changing the visual chart or changing the direction of sighting mark in the visual chart, carry out many times the inspection in order to reacing the true eyesight of being examined the people to being examined, can effectively discover pretend eyesight and overcome pretend high eyesight.
In order to achieve the above object, the utility model provides an eye chart installation adjusting device, first magnet and second magnet including inter attraction, first magnet fixed mounting is in the back of eye chart, the second magnet is installed in the backup pad that is used for installing the eye chart.
In order to achieve the above object, the utility model also provides an eyesight test device, including visual chart, strutting arrangement, distance measuring device and above-mentioned visual chart installation adjusting device, visual chart demountable installation in strutting arrangement's the backup pad.
Preferably, the support device is a movable support device and comprises a bottom support and a support plate arranged on the support, and wheels are arranged at the bottom of the support.
Furthermore, four corners of the supporting plate are provided with at least one illuminating lamp, and any two adjacent illuminating lamps are symmetrically arranged.
Further, the device also comprises a control device, wherein the control device comprises a controller and a driving device connected with the supporting device, and the controller is connected with a driving motor of the driving device.
In order to achieve the above object, the present invention further provides a vision testing device, which comprises a visual chart, a supporting device, a distance measuring device, a mirror and the visual chart installation and adjustment device, wherein the supporting device comprises a movable supporting device and a fixed supporting device, and the movable supporting device is placed opposite to the fixed supporting device; the visual chart is detachably mounted on the movable supporting device, the mirror is mounted on the fixed supporting device, or the visual chart is detachably mounted on the fixed supporting device, and the mirror is mounted on the movable supporting device, so that the mirror and the visual chart are oppositely arranged.
Preferably, the first magnet is fixedly installed on the back of the visual acuity chart, the second magnet is installed on the movable supporting device when the visual acuity chart is installed on the movable supporting device, and the second magnet is installed on the fixed supporting device when the visual acuity chart is installed on the fixed supporting device.
Furthermore, when the visual chart is installed on the movable supporting device, at least one illuminating lamp is arranged at four corners of the supporting plate of the movable supporting device, and any two adjacent illuminating lamps are symmetrically arranged.
Furthermore, when the visual chart is installed on the fixed supporting device, at least one illuminating lamp is arranged at four corners of the supporting plate of the fixed supporting device, and any two adjacent illuminating lamps are symmetrically arranged.
Further, the device also comprises a control device, wherein the control device comprises a controller and a driving device connected with the movable supporting device, and the controller is connected with a driving motor of the driving device.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
(1) the utility model discloses visual chart installation adjusting device is equipped with two inter attraction's magnet, realizes the change of visual chart and the change of visual target direction in the visual chart through the magnetic force effect between magnet and the magnet, when carrying out visual inspection, and an inspection person can accomplish the operation, easy operation, convenience, labour saving and time saving.
(2) The utility model discloses visual inspection device, be equipped with visual chart installation adjusting device, the direction that can change different visual charts and change the sighting mark in the visual chart through visual chart installation adjusting device carries out many times inspection and realizes the true visual inspection to being examined the people, and alternate inspection distance in the testing process, alternate sighting mark size and direction, make visual chart structure reading ability reduction on the back, can only rely on true vision to identify the best visual sighting mark by the inspection person, can't disguise visual acuity, can effectively discover to be disguised visual acuity and overcome high eyesight by the inspection person, it is high to examine the correct rate.
Drawings
Fig. 1 is a schematic diagram of a back structure of an eye chart according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a support plate according to an embodiment of the present invention;
fig. 3 is a schematic view of a vision testing device according to embodiment 2 of the present invention;
fig. 4 is a schematic view of a vision testing apparatus according to embodiment 3 of the present invention.
Detailed Description
The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", etc. indicate the positional relationship based on the positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The utility model provides a visual chart installation adjusting device, first magnet and second magnet including inter attraction, first magnet fixed mounting is in the back of visual chart, the second magnet is installed in the backup pad that is used for installing the visual chart. The change of the visual chart and the change of the direction of the visual target in the visual chart are realized through the magnetic action between the magnet and the magnet, and when the visual inspection is carried out, one inspector can complete the operation, so that the visual inspection device is simple and convenient to operate, and time and labor are saved.
The utility model also provides a visual inspection device, the device is equipped with visual chart installation adjusting device, the direction that can change different visual charts and change the sighting target in the visual chart through visual chart installation adjusting device carries out many times inspection and realizes the true visual inspection to the person of being examined, and alternate inspection distance in the testing process, alternate sighting target size and direction, make the visual chart structure recite the nature and reduce, can only rely on true vision to identify the best visual target by the tester, can't disguise vision, can effectively discover vision and overcome disguise high vision, it is high to examine the rate of accuracy.
Example 1: referring to fig. 1 and 2, the visual chart installation and adjustment device comprises a first magnet 1 and a second magnet 2 which are mutually attracted, wherein the first magnet 1 is fixedly installed on the back surface of a visual chart 3, and the second magnet 2 is installed on a supporting plate 4 of a supporting device for installing the visual chart 3.
The more the reference objects are, the higher the possibility that the tested person finds the visual target rule by using the reference objects is, the more easily the tested person disguises the vision, in order to reduce the possibility that the tested person disguises by using the reference objects, the first magnet is fixedly arranged on the back of various visual charts, and each corner is provided with one first magnet, wherein the first magnet can be in the shape of a ring, a strip, a square, a triangle and the like, can be in a regular shape, can be in an irregular shape and is determined according to the size of the visual charts. Similarly, the number of the second magnets is the same as that of the first magnets, the shapes thereof are the same as or similar to those of the first magnets, and the mounting positions thereof correspond to the first magnets one to one. For example: the first magnet shown in fig. 1 and the second magnet shown in fig. 2 are both ring-shaped.
In addition, in order to prevent the magnet from being used as a reference object by the person to be inspected, the first magnet and the second magnet have the same color as the ground color of the eye chart, and the second magnet is embedded in the support plate of the mobile support device so that the upper surface of the second magnet is on the same horizontal plane as the surface of the support plate.
Example 2: referring to fig. 3, a vision test apparatus comprises an eye chart, a supporting device 6, a distance measuring device 5 and the eye chart installation adjusting device of the embodiment 1, wherein the eye chart is detachably arranged on a supporting plate 4 of the supporting device 6.
With continued reference to fig. 3, the support means 6 is a mobile support means comprising a bottom bracket 7 and a support plate 4 mounted on the bracket 7, the bottom of the bracket 7 being provided with wheels 8.
Further, in order to prevent the examinee from visually disguising the support plate for mounting the eye chart as a reference, the color of the support plate is the same as the ground color of the eye chart.
In a preferable embodiment of the present invention, the distance measuring device is a ruler disposed on the ground, and the wheel moves linearly along the ruler. And when the detection distance between the detected person and the visual chart is changed, the movable supporting device is moved, and after the movable supporting device stops moving, the numerical value of the scale is read to obtain the distance value between the detected person and the visual chart.
In another preferable solution of this embodiment, the distance measuring device is a slide rail with a scale, and the wheel is slidably engaged with the slide rail. When the inspection distance between the inspected person and the visual chart is changed, the movable supporting device is made to move on the sliding rail, and when the movable supporting device stops moving, the numerical value of the ruler is read to obtain the distance value between the inspected person and the visual chart.
In a further preferred embodiment of the present invention, the distance measuring device includes a displacement sensor provided on the support device, and the distance is automatically measured by the displacement sensor when the distance between the person to be examined and the visual chart is changed.
In another preferable solution of this embodiment, the vision testing apparatus further includes a control device, the control device includes a controller and a driving device connected to the supporting device, and the controller is connected to a driving motor of the driving device. The driving motor is controlled by the controller to drive the supporting device to move automatically, and the controller can also be connected with a displacement sensor of the distance measuring device to automatically detect the distance, so that the operation of a tester is facilitated.
In the vision testing apparatus of this embodiment, the number of optotypes in the eye chart may be 5, 6, 7, 8, 9, or more, and may be specifically set according to actual conditions.
In addition, in order to satisfy the illumination requirement of the visual chart, at least one illuminating lamp 9 is arranged at four corners of the supporting plate 4, and any two adjacent illuminating lamps are symmetrically arranged. For example: referring to fig. 2, four corners of the supporting plate 4 are provided with an illuminating lamp 9. The number of the illuminating lamps is not limited to one corner, and can be two, three or more; the positions of the illuminating lamps are not limited to four corners, and can also be four sides, the number of the illuminating lamps is not limited to one side, and can also be two, three or more, and the number is determined according to the size of the visual chart and the illumination requirement.
This embodiment the vision inspection device, when carrying out vision inspection, the direction that can change different visual charts and change the sighting target in the visual chart through visual chart installation adjusting device carries out many times inspection and realizes the true visual inspection to the person of being inspected, and alternate inspection distance in the testing process, alternate sighting target size and direction, make the visual chart structure can recite the nature and reduce, can only rely on true vision to identify the best visual target by the tester, can't disguise vision, can effectively discover disguise vision and overcome disguise high vision, it is high to inspect the rate of accuracy.
Example 3: referring to fig. 4, a vision testing device comprises an eye chart, a supporting device, a distance measuring device 5, a mirror 10 and an installation adjusting device of the eye chart, wherein the supporting device comprises a movable supporting device 61 and a fixed supporting device 62, and the movable supporting device 61 is arranged opposite to the fixed supporting device 62; the eye chart is detachably mounted on the movable support 61 and the mirror 10 is mounted on the fixed support 62.
With continued reference to fig. 4, the mobile support unit 61 comprises a bottom bracket 7 and a support plate 4 mounted on the bracket 7, wherein the bottom of the bracket 7 is provided with wheels 8.
Further, in order to prevent the examinee from visually disguising the support plate for mounting the eye chart as a reference, the color of the support plate is the same as the ground color of the eye chart.
With continued reference to FIG. 4, in this embodiment, the fixed support 62 is a stand on top of which the mirror 10 is located.
In a preferable embodiment of the present invention, the distance measuring device is a ruler disposed on the ground, and the wheel moves linearly along the ruler. And when the detection distance between the detected person and the visual chart is changed, the movable supporting device is moved, and after the movable supporting device stops moving, the numerical value of the scale is read to obtain the distance value between the detected person and the visual chart.
In another preferable solution of this embodiment, the distance measuring device is a slide rail with a scale, and the wheel is slidably engaged with the slide rail. When the inspection distance between the inspected person and the visual chart is changed, the movable supporting device is made to move on the sliding rail, and when the movable supporting device stops moving, the numerical value of the ruler is read to obtain the distance value between the inspected person and the visual chart.
In a further preferred embodiment of the present invention, the distance measuring device includes a displacement sensor provided on the support device, and the distance is automatically measured by the displacement sensor when the distance between the person to be examined and the visual chart is changed.
In another preferable solution of this embodiment, the vision testing apparatus further includes a control device, the control device includes a controller and a driving device connected to the supporting device, and the controller is connected to a driving motor of the driving device. The driving motor is controlled by the controller to drive the supporting device to move automatically, and the controller can also be connected with a displacement sensor of the distance measuring device to automatically detect the distance, so that the operation of a tester is facilitated.
In the vision testing apparatus of this embodiment, the number of optotypes in the eye chart may be 5, 6, 7, 8, 9, or more, and may be specifically set according to actual conditions.
In order to meet the illumination requirement of the visual chart, at least one illuminating lamp is arranged at four corners of the supporting plate, and any two adjacent illuminating lamps are symmetrically arranged. For example: referring to fig. 2, four corners of the supporting plate 4 are provided with an illuminating lamp 9. The number of the illuminating lamps is not limited to one at one corner, and can be two, three or more; the positions of the illuminating lamps are not limited to four corners, and can also be four sides, the number of the illuminating lamps is not limited to one side, and can also be two, three or more, and the illuminating lamps are specifically set according to the size of the visual chart and the illumination requirements.
In addition, when vision examination is carried out, the fixed supporting device is positioned in front of the examined person, the movable supporting device and the distance measuring device are both positioned behind the examined person, and only the movable supporting device needs to be moved when the distance is changed.
This embodiment vision inspection device, when carrying out vision inspection, the direction that can change different visual charts and change the sighting target in the visual chart through visual chart installation adjusting device carries out the real vision inspection of many times inspection realization to the person of being inspected, and alternate inspection distance in the testing process, alternate sighting target size and direction, make the visual chart structure can recite the nature and reduce, can only rely on real vision to identify the best visual target by the tester, can't pretend vision, can effectively discover pretend vision and overcome pretend high vision, it is high to inspect the correct rate.
Example 5: a visual acuity testing device having a constitution substantially the same as that of the visual acuity testing device according to embodiment 4, except that, in embodiment 4, the structures of the movable supporting means and the fixed supporting means are changed, and the mounting position of the visual chart is changed. In the vision testing apparatus of this embodiment, the visual chart is detachably mounted on the fixed support means, the mirror is mounted on the movable support means, and the second magnet is mounted on the fixed support means. In order to facilitate the installation of the visual acuity chart, in the embodiment, the fixed supporting device comprises a bracket and a supporting plate installed on the bracket, and the visual acuity chart is installed on the supporting plate of the fixed supporting device through the magnetic action of the first magnet and the second magnet. The movable supporting device comprises a support and wheels arranged at the bottom of the support, and the mirror is arranged at the top of the support of the movable supporting device. In order to meet the illumination requirement, at least one illuminating lamp is arranged at four corners of the supporting plate of the fixed supporting device, and any two adjacent illuminating lamps are symmetrically arranged. Referring to fig. 2, four corners of the supporting plate 4 are respectively provided with one illuminating lamp 9, and the number of the illuminating lamps is not limited to one at one corner, and can be two, three or more; the positions of the illuminating lamps are not limited to four corners, and can also be four sides, the number of the illuminating lamps is not limited to one side, and can also be two, three or more, and the illuminating lamps are specifically set according to the size of the visual chart and the illumination requirements.
In addition, when vision inspection is carried out, the movable supporting device and the distance measuring device are both positioned in front of the inspected person, the fixed supporting device is positioned behind the inspected person, and only the movable supporting device needs to be moved when the distance is changed.
This embodiment the vision inspection device, when carrying out vision inspection, the direction that can change different visual charts and change the sighting target in the visual chart through visual chart installation adjusting device carries out many times inspection and realizes the true visual inspection to the person of being inspected, and alternate inspection distance in the testing process, alternate sighting target size and direction, make the visual chart structure can recite the nature and reduce, can only rely on true vision to identify the best visual target by the tester, can't disguise vision, can effectively discover disguise vision and overcome disguise high vision, it is high to inspect the rate of accuracy.
The above-mentioned embodiments are provided for explaining the present invention, and not for limiting the present invention, and any modifications and changes made by the present invention are within the spirit and scope of the claims of the present invention.
Claims (10)
1. The utility model provides an eye chart installation adjusting device, its characterized in that includes first magnet and the second magnet of inter attraction, first magnet fixed mounting is in the back of eye chart, the second magnet is installed in the backup pad that is used for installing the eye chart, the quantity of second magnet is the same with the quantity of first magnet, its shape is the same or similar with the shape of first magnet, and its mounted position and first magnet one-to-one, the colour of first magnet and second magnet is the same with the ground colour of eye chart, and the second magnet is embedded in and moves strutting arrangement's backup pad, makes the upper surface of second magnet and the surface of backup pad on same horizontal plane.
2. A vision testing device comprising an eye chart, a supporting means, a distance measuring means, and the eye chart mounting adjusting means of claim 1, wherein the eye chart is detachably mounted on a supporting plate of the supporting means.
3. A vision testing device as defined in claim 2 wherein said support means is a mobile support means comprising a base support and a support plate mounted on the support, the base of said support being provided with wheels.
4. A vision testing device as defined in claim 3, wherein at least one illuminating lamp is provided at each of four corners of said supporting plate, and any two adjacent illuminating lamps are symmetrically provided therebetween.
5. A vision testing device as recited in claim 2, further comprising a control device including a controller and a drive device coupled to said support device, said controller being coupled to a drive motor of said drive device.
6. A vision testing device comprising an eye chart, a supporting means, a distance measuring means, a mirror, and the eye chart mounting adjustment means of claim 1, said supporting means comprising a moving supporting means and a fixed supporting means, said moving supporting means being placed opposite said fixed supporting means; the visual chart is detachably mounted on the movable supporting device, the mirror is mounted on the fixed supporting device, or the visual chart is detachably mounted on the fixed supporting device, and the mirror is mounted on the movable supporting device, so that the mirror and the visual chart are oppositely arranged.
7. A vision testing device as defined in claim 6 in which said first magnet is fixedly mounted to the back of said eye chart, said second magnet being mounted to said movable support means when said eye chart is mounted to said movable support means, said second magnet being mounted to said fixed support means when said eye chart is mounted to said fixed support means.
8. A visual inspection device as claimed in claim 7, wherein when said visual acuity test chart is mounted on said movable support means, at least one illuminating lamp is provided at each of four corners of a support plate of said movable support means, and any two adjacent illuminating lamps are symmetrically provided therebetween.
9. A visual inspection device as claimed in claim 7, wherein when said visual acuity test chart is mounted on said fixed support means, at least one illuminating lamp is provided at each of four corners of a support plate of said fixed support means, and any two adjacent illuminating lamps are symmetrically provided therebetween.
10. A vision testing device as recited in claim 6, further comprising a control device including a controller and a drive device coupled to said movable support device, said controller being coupled to a drive motor of said drive device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921045223.4U CN211066541U (en) | 2019-07-05 | 2019-07-05 | Visual chart installation adjusting device and visual inspection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921045223.4U CN211066541U (en) | 2019-07-05 | 2019-07-05 | Visual chart installation adjusting device and visual inspection device |
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| CN211066541U true CN211066541U (en) | 2020-07-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112869700A (en) * | 2021-01-21 | 2021-06-01 | 郭智勇 | Ophthalmic eyesight inspection device |
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2019
- 2019-07-05 CN CN201921045223.4U patent/CN211066541U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112869700A (en) * | 2021-01-21 | 2021-06-01 | 郭智勇 | Ophthalmic eyesight inspection device |
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