CN211560055U - Vision detection device - Google Patents
Vision detection device Download PDFInfo
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- CN211560055U CN211560055U CN201921584299.4U CN201921584299U CN211560055U CN 211560055 U CN211560055 U CN 211560055U CN 201921584299 U CN201921584299 U CN 201921584299U CN 211560055 U CN211560055 U CN 211560055U
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Abstract
The utility model discloses a vision detection device, which comprises a front plate arranged on the front wall, a rear plate arranged on the rear wall, and a vision detection channel formed by the closed communication between the front wall and the rear wall, wherein the front plate is provided with a window, and the front side of the rear plate is provided with a display screen for displaying a vision detection icon; when detecting eyesight, the person of being examined stands in antetheca the place ahead, remove the eye to the window front side, through the window with look the visual detection icon that surveys on the passageway observation display screen, because look to survey the passageway for communicateing between antetheca and back wall, a confined of not receiving ambient light interference is looked and is surveyed the space has been formed, also constituted one and had stably looked and survey the environment, fixed look the visual detection passageway of surveying the distance, visual detection distance has been guaranteed on the one hand, on the other hand makes the eye of the person of being examined can not receive the influence that ambient light changes, visual detection's accuracy has been guaranteed, the technical problem who receives detection distance or ambient light influence and reduce the detection accuracy in having solved current visual detection.
Description
Technical Field
The utility model belongs to the technical field of the visual acuity test, specifically speaking relates to a visual acuity test device.
Background
The existing eyesight test adopts the mode that the visual chart is installed on a wall and other positions, during test, a tested person keeps a certain distance from the visual chart, a shelter is used for sheltering left and right eyes respectively, and the unshsheltered eyes are tested.
In the existing vision detection mode, if a testee does not stand according to a specified distance or leans forward and backward, the distance between the testee and an eye chart does not meet the requirement, so that the problem of inaccurate vision detection is caused; moreover, the existing eyesight detection is performed under the condition of indoor name light or natural light, because human eyes are affected by ambient light, the brightness degree of the ambient light is different, the detected eyesight also has difference, and the problem of inaccurate eyesight detection can be caused.
Disclosure of Invention
An object of the utility model is to provide an eyesight detection device solves a great deal of problem that exists among the above-mentioned eyesight detection.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a vision testing device is proposed, comprising: a front wall and a rear wall opposite the front wall; the front plate is provided with a window and is arranged on the front wall; the front side of the back plate is provided with a display screen for displaying the eyesight detection icons, and the back plate is arranged on the back wall; wherein, the front wall and the rear wall are communicated in a closed way to form a visual measuring channel.
Further, the length of the vision detection channel is a set vision detection distance.
Furthermore, a black light absorption layer is attached to the inside of the vision channel.
Furthermore, a plurality of front plates are installed on the front wall, and a plurality of rear plates are installed on the rear wall corresponding to each front plate; and a light isolating layer is arranged between each pair of the front plate and the rear plate.
Furthermore, a light source is arranged in the visual measuring channel.
Further, the front plate is further provided with: a chin rest; the handles are positioned on the two sides of the chin rest or the window.
Further, the window includes: the window is arranged on the front plate; the shielding plate is arranged on the front side or the rear side of the window in a translation structure and used for shielding the left half part, the right half part or all of the window.
Furthermore, the rear plate is provided with heat dissipation holes.
Compared with the prior art, the utility model discloses an advantage is with positive effect: the utility model provides a vision detection device, including the front bezel installed on the front wall, the back plate installed on the back wall, and the vision channel formed by the closed communication between the front wall and the back wall, the front bezel is provided with a window, the front side of the back plate is provided with a display screen for displaying vision detection icons, the distance between the front wall and the back wall is fixed; when using this visual detection device to detect eyesight, the person of measurationing stands in antetheca the place ahead, remove the eye to the window front side, survey the visual detection icon on the display screen through the window and look, because look surveying the passageway for communicateing between antetheca and back wall, a confined look that does not receive ambient light interference is formed and is surveyed the space, also constituted one and had stably looked and survey the environment, the fixed look surveys the passageway of looking of surveying the distance, visual detection distance has been guaranteed on the one hand, on the other hand makes the person of measurationing eye can not receive the influence that ambient light changes, visual detection's accuracy has been guaranteed, the technical problem who receives detection distance or ambient light influence and reduce the detection accuracy in having solved current visual detection.
Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the invention, which is to be read in connection with the accompanying drawings.
Drawings
Fig. 1 is a device frame diagram of the vision testing device of the present invention;
FIG. 2 is a front plate structure view of the vision testing device of the present invention;
FIG. 3 is a view of a window of the vision testing device of the present invention;
FIG. 4 is a structural diagram of another window of the vision testing device of the present invention;
FIG. 5 is a schematic view of another front plate of the vision testing apparatus of the present invention;
fig. 6 is a structural diagram of a back plate of the vision testing device provided by the utility model;
fig. 7 is a schematic diagram of an embodiment of the vision testing apparatus according to the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
The utility model aims at providing a visual detection device, solve and exist among the current visual detection process and receive measuring distance or ambient light influence and reduce the technical problem who detects the accuracy, it is specific, as shown in fig. 1, including antetheca A, with antetheca A relative back wall B, antetheca A and back wall B here are for example wall, panel etc. install front bezel 1 on the antetheca A, install on the back wall B between back plate 2, antetheca A and the back wall B and seal the intercommunication and form and look survey passageway 3.
A window 4 for viewing the vision test icons is arranged on the front plate 1, and a display screen S for displaying the vision test icons is arranged on the front side of the rear plate 2.
The vision detection channel 3 is set with a length according to vision detection requirements, namely, the length interval between the front wall A and the rear wall B is set according to the vision detection requirements, so that a standard vision detection distance is ensured between the front plate 1 and the rear plate 2; when using this visual detection device to detect eyesight, the person of being examined stands before antetheca A, remove the eye to the front side of window 4, through window 4 and the visual detection icon of looking on surveying passageway 3 observation display screen S, because look survey passageway 3 for the antetheca A and the back wall B between the intercommunication has formed a confined visual space of not receiving ambient light interference, also constituted one and had stably looked and surveyed the environment, fixed visual distance 'S visual channel of surveying, make this visual detection device guarantee visual detection distance on the one hand, on the other hand guarantees that the person of being examined eye can not receive the influence of ambient light change, visual detection' S accuracy has been guaranteed, the technical problem who reduces the detection accuracy by detection distance or ambient light influence in having solved current visual detection.
The vision channel 3 may have various design structures according to the application environment, for example, a frame made of hard material such as light-shielding cloth, plastic, wood, metal, etc. In order to improve the light stability of the vision detection, a light source with constant brightness can be arranged in the vision channel 3, or a black light absorption layer is attached to the inner side of the vision channel 3.
As shown in fig. 2, the utility model provides a vision detection device's front bezel 1 sets up chin rest 7 in window 4's below for hold in the palm and put the position of injecing the chin, keep face's altitude constancy, this chin rest 7 adopts height-adjustable structural design, in order to adapt to different measurands, guarantees that measurands's eye is kept flat with window 4. Handles 8 can be arranged on the two sides of the chin rest 7 or the window 4 for holding and keeping the body of the tested person fixed, thereby ensuring the stability of the face in the detection process.
As shown in fig. 3, the window 4 of the present invention includes a window 41 and a shielding plate 42, the window 41 is opened on the front plate 1; the shielding plate 42 is disposed at the front side or the rear side of the window 41 in a translatable structure for shielding the left half, the right half or all of the window. In the vision testing process, when the testee need detect the right eye, shielding plate 42 can move to the left half part of window 41 based on its translation structure and shelter from, reaches the effect of sheltering from the left eye, and when the testee need detect the left eye, shielding plate 42 can move to the right half part of window 41 based on its translation structure and shelter from, reaches the effect of sheltering from the right eye. The translation shielding plate 42 can ensure that the face (eyes) of the tested person keeps still, and the stability of the visual test is maintained.
The shielding plate 42 can be operated manually and translated, and also can be translated based on the driving of the driving mechanism, which is not specifically limited by the present invention.
In the embodiment shown in fig. 3, the window 4 further includes a shutter rail 43 installed on a front side or a rear side (rear side in the drawing) of the window 41, and the shutter 42 is installed on the shutter rail 43 and is movable based on the shutter rail 43; the shielding plate 42 is provided with a toggle button 44, and the examinee can move the shielding plate 42 by toggling the toggle button 44.
In the embodiment shown in fig. 4, the shielding plate 42 is divided into a left shielding plate 421 and a right shielding plate 422, and the left shielding plate 421 can shield the left half of the window 41 in a translational structure; the right shielding plate 422 shields the right half part of the window 41 in a translation structure, and the tested person can move the left shielding plate 421 or the right shielding plate 422 according to the detection requirement; when the two are combined, the window 41 is completely shielded, and substances such as dust and the like are prevented from entering the vision detection device from the window 41.
In the embodiment shown in fig. 5, the window 41 is opened on the front plate 1, the shielding plate is disposed on the rear side of the front plate 1, the sliding groove 45 is opened on the front plate 1 on the side of the window 41, the toggle button 44 extends into the sliding groove 45 from the rear side of the front plate 1, so that the shielding plate 42 can be translated with the sliding groove 45 as a guide, and when the toggle button 44 is a hand-screwed nut, the hand-screwed nut can be screwed to fix the shielding plate 42 after the shielding plate 42 is translated.
A forehead positioning window 46 protrudes from the edge of the window 41, the edge of the forehead positioning window 46 is designed with a radian, and the upper end of the forehead positioning window is also folded to form a forehead positioning baffle plate 47 for limiting the forehead of a tested person, so that the tested person is prevented from shaking the head left and right during detection to deviate from a window, the detection angle is prevented from being changed due to eye movement, and the detection accuracy is ensured; a stop strip 48 for blocking the left eye and the right eye and preventing detection interference is arranged in the middle of the movable support.
The utility model provides an among the visual detection device, display screen S sets up in the look of 2 front sides of back plates surveys passageway 3 for show the visual detection icon, the visual detection icon includes but is not limited to E letter, C letter or other static state or dynamic icon sequence that are used for detecting eyesight. When showing dynamic icon sequence, the utility model provides a vision detection device is corresponding including control circuit, places in the vision in surveying passageway 3 for control display and other and detect relevant control, for example the translation of shielding plate 42 in the control window 4, send voice prompt, receive external input instruction or acoustic control instruction and execution etc. do not give the repeated description here.
At this time, as shown in fig. 6, a heat radiation hole 21 is formed in the rear plate 2 to radiate heat generated by the control circuit and the display screen S.
The utility model discloses a preferred embodiment, as shown in fig. 7, set up a plurality of front bezel 1 on antetheca A, then back wall B corresponds every front bezel 1 and installs a plurality of back boards 2, and every is provided with light-isolating layer 10 between front bezel 1 and the back board 2 to a holistic frame construction forms a plurality ofly the utility model provides a vision detection device can supply a plurality of measurands to carry out vision detection simultaneously, improves detection efficiency, is particularly useful for places such as school, physical examination.
It should be noted that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the present invention.
Claims (7)
1. A vision testing device, comprising:
a front wall and a rear wall opposite the front wall;
the front plate is provided with a window and is arranged on the front wall;
the front side of the back plate is provided with a display screen for displaying the eyesight detection icons, and the back plate is arranged on the back wall;
wherein the front wall and the rear wall are communicated in a closed manner to form a visual measuring channel;
the front wall is provided with a plurality of front plates, and the rear wall is provided with a plurality of rear plates corresponding to each front plate;
and a light isolating layer is arranged between each pair of the front plate and the rear plate.
2. The vision testing device of claim 1, wherein the length of the vision channel is a set vision testing distance.
3. The vision testing device of claim 1, wherein a black light absorbing layer is affixed within the vision testing channel.
4. The vision testing device of claim 1, wherein a light source is disposed within the vision testing channel.
5. The vision testing device of claim 1, wherein said front plate is further provided with:
a chin rest;
the handles are positioned on the two sides of the chin rest or the window.
6. The vision testing device of claim 1, wherein said viewing window comprises:
the window is arranged on the front plate;
the shielding plate is arranged on the front side or the rear side of the window in a translation structure and used for shielding the left half part, the right half part or all of the window.
7. The vision testing device of claim 1, wherein the back plate has heat dissipation holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921584299.4U CN211560055U (en) | 2019-09-23 | 2019-09-23 | Vision detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921584299.4U CN211560055U (en) | 2019-09-23 | 2019-09-23 | Vision detection device |
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| Publication Number | Publication Date |
|---|---|
| CN211560055U true CN211560055U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921584299.4U Active CN211560055U (en) | 2019-09-23 | 2019-09-23 | Vision detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114527046A (en) * | 2022-01-05 | 2022-05-24 | 上海应用技术大学 | Visual acuity testing arrangement under multifactor influence |
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2019
- 2019-09-23 CN CN201921584299.4U patent/CN211560055U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114527046A (en) * | 2022-01-05 | 2022-05-24 | 上海应用技术大学 | Visual acuity testing arrangement under multifactor influence |
| CN114527046B (en) * | 2022-01-05 | 2024-04-09 | 上海应用技术大学 | Visual acuity testing device under multi-factor influence |
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