CN211658114U

CN211658114U - Vision detection device

Info

Publication number: CN211658114U
Application number: CN201921585390.8U
Authority: CN
Inventors: 车诚; 张兰娜; 马竟锋
Original assignee: Qingdao Pengfengcheng Medical Technology Co Ltd
Current assignee: Qingdao Pengfengcheng Medical Technology Co Ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-10-13
Anticipated expiration: 2029-09-23

Abstract

The utility model discloses a vision detection device, which comprises a front plate, a rear plate and a vision detection channel; the front plate is provided with a window; a display screen for displaying the vision detection icons is arranged on the front side of the rear plate; the vision measuring channel is connected between the front plate and the rear plate; when using this visual detection device to detect eyesight, the person being examined removes 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 and survey the passageway and connect between front bezel and back plate, a confined visual survey space that does not receive ambient light interference has been formed between front bezel and back plate, also constituted one and had stably looked and surveyed the environment, the fixed visual channel that surveys the distance, visual detection distance has been guaranteed on the one hand, on the other hand makes the person being examined eye can not receive the influence that ambient light changes, 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.

Description

Vision detection device

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: the front plate is provided with a window; the front side of the back plate is provided with a display screen for displaying the eyesight test icons; and the vision measuring channel is connected between the front plate and the rear plate.

Further, the visual measuring channel is designed to be of a foldable structure.

Furthermore, the visual measuring channel is made of flexible materials.

Furthermore, a black light absorption layer is attached to the inside of the vision channel.

Further, the vision testing apparatus further includes: the front box body is connected or fixed with the front plate, and one end of the vision measuring channel is connected with the front box body; the rear box body is connected to the front end of the rear plate, and the other end of the vision measuring channel is connected with the rear box body; the front box body and the rear box body can be in butt joint, and the vision measuring channel is accommodated in a cavity formed after the front box body and the rear box body are in butt joint.

Further, the vision testing apparatus further includes: and the control circuit is arranged in the rear box body.

Furthermore, the visual measuring channel is designed to be of a telescopic organ structure.

Further, the front plate is further provided with: a chin rest; and/or, handles located on both sides of the viewing 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, which comprises a front plate, a back plate and a vision detection channel connected between the front plate and the back plate, wherein the front plate is provided with a window, and the front side of the back plate is provided with a display screen for displaying vision detection icons; when using this visual detection device to detect eyesight, the person being examined removes 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 and survey the passageway and connect between front bezel and back plate, a confined visual survey space that does not receive ambient light interference has been formed between front bezel and back plate, also constituted one and had stably looked and surveyed the environment, the fixed visual channel that surveys the distance, visual detection distance has been guaranteed on the one hand, on the other hand makes the person being examined eye can not receive the influence that ambient light changes, 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.

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 three-dimensional structure 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 side view structure diagram of the vision inspection channel of the vision inspection device of the present invention;

fig. 4 is a schematic view of the structure of the vision testing device in a contracted state;

FIG. 5 is a view of a window of the vision testing device of the present invention;

FIG. 6 is a structural diagram of another window of the vision testing device of the present invention;

fig. 7 is a structural diagram of a back plate of the vision testing device of 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 to 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 concrete, as shown in figure 1, include front bezel 1, back plate 2 and connect looking survey passageway 3 between front bezel 1 and back plate 2.

A window 4 for viewing the visual acuity test icons is provided on the front panel 1, and a display screen (not shown) for displaying the visual acuity test icons is provided on the front side of the rear panel 2.

The vision detection channel 3 is set to be long according to vision detection requirements, and 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 being examined removes the front side to window 4 with the eye, through window 4 and look the visual detection icon that surveys on the passageway 3 observation display screen of looking, because look and survey passageway 3 and connect between front bezel 1 and back plate 2, it surveys the space to have formed a confined look that does not receive ambient light interference between front bezel 1 and the back plate 2, also constituted one and had stably looked and surveyed the environment, fixed visual detection distance's visual detection passageway, make this visual detection device guarantee visual detection distance on the one hand, on the other hand guarantees that the person being examined the eye can not receive the influence of ambient light change, 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.

The vision detecting channel 3 can have various design structures according to application environments, for example, when the vision detecting device is fixed in a specific place for use, the vision detecting channel 3 can be made of hard materials such as plastics, wood, metal and the like; when the vision detecting device needs to frequently replace a detection place, the vision detecting channel 3 can be designed into a folding structure, such as a telescopic organ structure shown in fig. 1, but is not limited by the structure shown in fig. 1, or is made of a flexible material, so that the vision detecting channel 3 can be folded or compressed, the volume of the whole vision detecting device is reduced, and the purposes of carrying about and convenient transportation are achieved.

As a specific embodiment, as shown in fig. 3, the vision testing apparatus further includes a front box 5 and a rear box 6, the front box 5 is connected or fixed with the front plate 1, and one end of the vision testing channel 3 is connected therewith; the rear box body 6 is connected with the front end of the rear plate 2, and the other end of the vision measuring channel 3 is connected with the rear box body; as shown in fig. 4, the front box 5 and the rear box 6 can be butted, a cavity is formed inside the two butted boxes, based on the foldable or compressed vision measuring channel structure, the foldable or compressed vision measuring channel 3 is accommodated in the cavity formed after the two butted boxes, so that the volume of the vision detecting device is reduced on the whole, and the transportation or carrying is convenient.

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. 5, the window 4 of the present invention includes a window 41 and a shielding plate 42, wherein 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. 5, 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. 6, the shielding plate 42 is divided into a left shielding plate 421 and a right shielding plate 422, and the left shielding plate 421 shields the left half of the window 41 in a translatable 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. 4, the window 41 is opened on the front panel 1, the shielding plate 42 is disposed on the rear side of the front panel 1, the sliding groove 45 is opened on the front panel 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 panel 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.

In the embodiment shown in fig. 1, 4, 5 or 6, in the window 4 of the present invention, a forehead positioning window 46 is protruded 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 further folded to form a forehead positioning block piece 47 for limiting the forehead of the tested person, so as to prevent the tested person from shaking the head left and right during the testing period to deviate from the window, and prevent the testing angle from changing due to the eye movement, thereby ensuring the testing accuracy; 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, the display screen sets up in the back box 6 of 2 front sides of back plates or in the visual passageway 3 of surveying 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 the 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 back box 6 in 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. 7, a heat dissipation hole 21 is formed in the rear plate 2 to dissipate heat generated by the control circuit and the display panel.

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

1. A vision testing device, comprising:

the front plate is provided with a window;

the front side of the back plate is provided with a display screen for displaying the eyesight test icons;

the vision measuring channel is connected between the front plate and the rear plate;

look and survey the channel design and be beta structure, then eyesight detection device still includes:

the front box body is connected or fixed with the front plate, and one end of the vision measuring channel is connected with the front box body;

the rear box body is connected to the front end of the rear plate, and the other end of the vision measuring channel is connected with the rear box body;

the front box body and the rear box body can be in butt joint, and the vision measuring channel is accommodated in a cavity formed after the front box body and the rear box body are in butt joint.

2. The vision testing device of claim 1, wherein said vision testing channel is made of a flexible material.

3. The vision testing device of claim 1 or 2, wherein a black light absorbing layer is affixed inside the vision testing channel.

4. The vision testing device of claim 1, further comprising:

and the control circuit is arranged in the rear box body.

5. A vision testing device according to claim 1, wherein said vision testing channel is designed as a concertina structure.

6. The vision testing device of claim 1, wherein said front plate is further provided with:

a chin rest; and/or the presence of a gas in the gas,

and the handles are positioned on two sides of the window.

7. 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.

8. The vision testing device of claim 1, wherein the back plate has heat dissipation holes.