CN211834335U

CN211834335U - Vision detection device

Info

Publication number: CN211834335U
Application number: CN201922170679.XU
Authority: CN
Inventors: 张科宇
Original assignee: Shenzhen Jintaitan Technology Co ltd
Current assignee: Shenzhen Xuguang Puzhao Electronics Co.,Ltd.
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-11-03
Anticipated expiration: 2029-12-06

Abstract

A vision testing device comprising: a light generating assembly for generating a parallel light beam; the detection assembly comprises a circular pattern piece, and an eyesight test chart is arranged on the pattern piece; the imaging assembly comprises a plurality of convex mirrors and is used for amplifying the projected pattern and imaging the pattern at a long distance; the first shell is made of waterproof materials and is provided with a first cavity, a first opening and a second opening, the light generation assembly and the imaging assembly are arranged in the first cavity, and the pattern piece is arranged between the light generation assembly and the imaging assembly; the parallel light that the subassembly produced is sent out to the light, shines the pattern piece, throws the eyesight test table on the formation of image subassembly, and the formation of image subassembly is enlarged and is imaged at the distance with the eyesight test table. Adopt the eyesight detection device of this application, eliminated the loaded down with trivial details of original test mode, only need lean on eyesight detection device on people's eye, whether have a problem with the eyesight of people's eye (like myopia etc.) just can be detected out, the cost is reduced is favorable to more crowds to use, can test anytime and anywhere.

Description

Vision detection device

Technical Field

The application relates to medical care products, in particular to a vision detection device.

Background

Currently, there are three common ways for detecting vision problems in the market:

the first is to use the visual chart to test, which is to use the visual chart with national standard patterns to hang outside a certain distance, for example, outside 5 meters, then light the visual chart, and the person stands outside 5 meters, and watches the shape of each pattern on the visual chart with one eye, and according to the true degree of the seen shape, the visual test is completed corresponding to different indexes on the visual chart. The test mode is an international universal mode and is mainly used in hospitals, and has the defects that the visual chart has certain international size requirements on the size because the visual chart has the size and the human eye height, and the visual chart has different hanging heights and is difficult to be suitable for all people because the human bodies with different heights need to correspond to the visual charts with different heights. Due to the size requirement of the visual chart, the detection range of the visual chart is divided into a certain range from a small pattern to a large pattern, and the measurement accuracy of the range and the like is inaccurate. Meanwhile, the detection brightness of the visual chart has certain requirements, and the inaccurate test can be caused by the brightness index lower than the required brightness index. These requirements are not clear to the average user, so the average user is inaccurate if he purchases the eye chart test by himself. Since the above requirements are clear in a hospital or a spectacle store, the eye chart is generally used as a test mode in the hospital or the spectacle store.

The second is to use the vision detection instrument commonly used in hospitals or spectacle shops, and the detection instrument is in a photoelectric automatic control mode, so that the eyes of people relax through fog vision, then light is emitted, and diopter can appear after the light passes through the eyes, so that the vision detection astigmatism detection is obtained. After the vision problems of the eyes are checked by the instrument, the vision problems are determined with a hospital or an eye shop. Because the price of the test instrument is high, the detection of every family can not be realized at any time and any place, the problem of early vision is easily caused by the lack of timely detection, and the vision problem becomes more and more serious after the vision problem is discovered late.

The third is vision test of pattern display on mobile phone screen recently introduced in the united states, which is implemented by using the mobile phone screen as a visual chart, then operating the mobile phone to display different patterns, observing, needing a test tube and the mobile phone to be integrally matched, pressing the optical test tube on the display screen of the mobile phone, displaying different patterns on the mobile phone, testing the vision, and then selecting purchase service on the mobile phone. The defect of the detection mode is that the operation is inconvenient for one person, the detected person presses eyes to the test tube and presses close to the mobile phone screen to watch, the operation of fingers on the mobile phone screen is inconvenient, and the operation is convenient only by assistance of other people. In addition, the mobile phone, the test cylinder and the eyes are required to be close to each other to test, in order to avoid shaking in multiple modes, the mobile phone screen is flatly placed on a fixed table board, then the test cylinder is pressed on the mobile phone screen, a human body bends down and lowers the head to detect, the posture and the vision of a standing or sitting posture of the human body are correct, a certain difference exists, even the fluctuation of breathing can be influenced, the accuracy of detection can be influenced after the test is carried out for a long time, the fact that subsequent services are selected to be purchased after the test is difficult to guarantee, and the accuracy is achieved in the process of matching glasses for example.

However, in remote areas and economically undeveloped areas, due to lack of resources, when a vision problem occurs, early detection is difficult to popularize, and the subsequent vision problem is difficult to prevent and protect in advance.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application will be solved is to prior art's not enough, provides a visual detection device.

The technical problem to be solved by the application is solved by the following technical scheme: a vision testing device comprises a light generating assembly, a testing assembly, an imaging assembly and a first shell;

the light generating assembly is used for generating parallel light beams;

the detection assembly comprises a circular pattern sheet, and a vision detection table is arranged on the pattern sheet;

the imaging assembly comprises a plurality of convex mirrors and is used for amplifying the projected pattern and imaging the pattern at a long distance;

the first shell is provided with a first cavity, a first opening and a second opening, the first opening and the second opening are respectively arranged at two ends of the first shell, the first opening, the first cavity and the second opening are communicated, the light generation assembly is arranged in the first cavity and close to the first opening, the imaging assembly is arranged in the first cavity and close to the second opening, the pattern sheet is arranged between the light generation assembly and the imaging assembly, the first opening is provided with a cover body, and the second opening is provided with a transparent sheet;

the parallel light generated by the light generating component irradiates the pattern piece and projects the vision test chart on the imaging component, and the imaging component enlarges and images the vision test chart at a distance.

Further, the light generating assembly includes an incident light generating mechanism and a parallel light lens;

the incident light generating mechanism is used for generating incident light and irradiating the incident light onto the parallel light lens;

the parallel light lens is used for converting the incident light into parallel light and emitting the parallel light onto the pattern sheet.

Further, the incident light generating mechanism includes a light source and a control circuit;

the light source; for generating incident light;

the control circuit is used for controlling the light source.

Further, the incident light generating mechanism includes a light control sheet;

the cover body comprises a light incident sheet for emitting light;

the light control sheet is provided with a light transmitting area, and the incident light is emitted through the light transmitting area.

Further, the imaging assembly includes a first lens and a second lens;

the first lens is used for receiving a first image of a vision test chart and generating a second image through the first lens, and the second image is between the first lens and the second lens;

and the second lens is used for amplifying the input second image and imaging the second image at a distance.

Further, the pattern piece is equipped with a plurality of detection zone, detection zone includes far vision detection zone, astigmatism detection zone, presbyopia detection zone and/or near-sighted detection zone, detection zone is equipped with corresponding visual acuity test table.

Further, the detection assembly further comprises a selection mechanism;

the selection mechanism comprises a second shell, a fixing piece and a switch piece; the second shell is provided with a second cavity, a third opening and a fourth opening, the fixing piece is arranged in the second cavity and used for fixing the pattern piece, the first shell is further provided with a fifth opening, the third opening and the second cavity are communicated, the pattern piece penetrates through the fifth opening, the third opening and part of the pattern piece are arranged in the second cavity, one end of the switch piece is embedded in the fourth opening, the other end of the switch piece is arranged in the second cavity, and the switch piece is pressed to push the pattern piece to rotate so as to select the detection area.

Furthermore, the fixing part comprises a fixing shaft, a first fixing plate and a second fixing plate, through holes are formed in the pattern plate, the first fixing plate and the second fixing plate respectively, the pattern plate is clamped between the first fixing plate and the second fixing plate, and the fixing shaft penetrates through the through holes and is fixed on the second shell.

Further, the switch piece includes first button, push rod and reset spring, first button with reset spring sets up respectively the both ends of push rod, first button inlay in the fourth opening, reset spring fixes in the second casing.

Further, the selection mechanism still includes the locating part, the locating part includes support and one-way elastic locking plate, the support with the switching piece linkage, be equipped with a plurality of bosss on the first stationary blade, be equipped with a plurality of breachs on the circumference of second stationary blade, the breach with detection area corresponds, the push rod is equipped with the recess, when pressing down first button, the recess blocks the boss makes the push rod promotes first stationary blade.

Due to the adoption of the technical scheme, the beneficial effects of the application are as follows:

the vision detection device that this application embodiment provided includes: a light generating assembly for generating a parallel light beam; the detection assembly comprises a pattern sheet, and the pattern sheet is provided with an eyesight test chart; the imaging assembly comprises a plurality of convex mirrors and is used for amplifying the projected pattern and imaging the pattern at a long distance; the first shell is provided with a first cavity, a first opening and a second opening, the light generation assembly and the imaging assembly are arranged in the first cavity, and the pattern piece is arranged between the light generation assembly and the imaging assembly; the parallel light that the subassembly produced is sent out to the light, shines the pattern piece, throws the eyesight test table on the formation of image subassembly, and the formation of image subassembly is enlarged and is imaged at the distance with the eyesight test table. Adopt the eyesight detection device of this application, eliminated the loaded down with trivial details of original test mode, only need lean on eyesight detection device on people's eye, whether have a problem with the eyesight of people's eye (like myopia etc.) just can be detected out, the cost is reduced is favorable to more crowds to use, can test anytime and anywhere.

Drawings

FIG. 1 is a schematic structural diagram of a vision testing apparatus in one embodiment according to a first embodiment of the present application;

FIG. 2 is a schematic structural diagram of a vision testing apparatus in another embodiment according to a first embodiment of the present application;

FIG. 3 is a schematic structural diagram of a vision testing apparatus in a second embodiment of the present application;

FIG. 4 is a schematic structural diagram of a vision testing apparatus in another embodiment according to the second embodiment of the present application;

fig. 5 is a schematic structural diagram of a detection assembly without a housing according to a second embodiment of the present disclosure, in a first viewing angle;

fig. 6 is a schematic structural diagram of a detection assembly without a housing according to a second embodiment of the present application at a second viewing angle;

fig. 7 is a schematic structural diagram of a detection assembly without a housing according to a second embodiment of the present application from a third viewing angle;

fig. 8 is a schematic diagram of distant imaging observed by human eyes of the vision testing apparatus in the second embodiment of the present application.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. The present application may be embodied in many different forms and is not limited to the embodiments described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, and the words used to indicate orientation, top, bottom, left, right, etc. are used solely to describe the illustrated structure in connection with the accompanying figures.

One skilled in the relevant art will recognize, however, that one or more of the specific details can be omitted, or other methods, components, or materials can be used. In some instances, some embodiments are not described or not described in detail.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning.

Furthermore, the technical features, aspects or characteristics described herein may be combined in any suitable manner in one or more embodiments. It will be readily appreciated by those of skill in the art that the order of the steps or operations of the methods associated with the embodiments provided herein may be varied. Thus, any sequence in the figures and examples is for illustrative purposes only and does not imply a requirement in a certain order unless explicitly stated to require a certain order.

The first embodiment is as follows:

referring to fig. 1 and 2, an embodiment of the vision testing apparatus of the present application includes a light generating assembly 300, a testing assembly 200, an imaging assembly 400, and a first housing 100. Wherein the first housing 100 is made of a waterproof material.

A light generating assembly 300 for generating a parallel light beam;

the detection assembly 200 comprises a pattern sheet 210, wherein the pattern sheet 210 is provided with a vision test chart; the pattern sheet 210 is made of a transparent material;

an imaging assembly 400 including a plurality of convex mirrors for magnifying and imaging the projected pattern at a remote distance;

the light source device comprises a first shell 100, wherein the first shell 100 is provided with a first cavity 130, a first opening 110 and a second opening 120, the first opening 110 and the second opening 120 are respectively arranged at two ends of the first shell 100, the first opening 110, the first cavity 130 and the second opening 120 are communicated, a light generating assembly is arranged in the first cavity 130 and is close to the first opening end 110, an imaging assembly is arranged in the first cavity 130 and is close to the second opening 120, a pattern sheet 210 is arranged between the light generating assembly and the imaging assembly, the first opening 110 is provided with a cover body 111, and the second opening 120 is provided with a transparent sheet 121; the transparent sheet 121 may be a flat transparent sheet or a lenticular lens sheet according to the front and back sides of the pattern sheet 210. The first housing 100 may be made of a waterproof material.

The parallel light generated by the light generating assembly 300 illuminates the pattern sheet 210 and projects the vision test chart onto the imaging assembly, which magnifies and images the vision test chart at a distance.

Further, the light generating assembly 300 may include an incident light generating mechanism and a parallel light lens 310;

an incident light generating mechanism for generating incident light and irradiating the incident light onto the parallel light lens 310; the parallel light lens 310 is used for converting incident light into parallel light and emitting the parallel light onto the pattern sheet 210.

In one embodiment, the incident light generating mechanism may include a light source 321 and a control circuit (not shown). A light source 321; for generating incident light; the control circuit is electrically connected to the light source 321 for controlling the light source 321. The light source 321 may be an LED lamp or a small light bead emitting white light. Further, the incident light generating mechanism may further include a photosensitive element 322, and the photosensitive element 322 is electrically connected to the light control circuit, and is used for controlling the brightness of the light source 321 under the control of the light control circuit, so that the brightness of the light source 321 is always kept consistent.

In another embodiment, the incident light generating mechanism may include a light control sheet 331, and the light control sheet 331 is a light shielding sheet transmitting light only at a central position. The cover 111 may be a light incident sheet, which may be a frosted sheet, an atomized sheet, a translucent sheet, etc., as long as it is a type of light diffuser. The light incident sheet is made into a light diffusion sheet, so that the effect of preventing the direct irradiation of light rays from generating glare and influencing the test is realized. The light control sheet 331 has a light transmitting region 332, and the incident light is emitted through the light transmitting region 332. The light-transmitting region 332 may be a transparent region or a through hole.

Further, the imaging assembly 400 may include a plurality of lenses, the number of the lenses may be set as required, and in the present embodiment, the imaging assembly 400 may include a first lens 410 and a second lens 420. A first lens 410 for receiving a first image of a vision test chart, and generating a second image through the first lens 410, the second image being between the first lens 410 and a second lens 420; and a second lens 420 for magnifying the input second image and imaging at a distance.

This application is through becoming the parallel light to light, the parallel light passes transparent pattern piece, transparent pattern piece this moment is regarded as the object and can be passed through first lens formation of image, then the formation of image that first lens becomes, can be regarded as the object by the second lens and form of image again, technical personnel in the field can know, formation of image this moment is the extension image of people's eye straight line vision from optical angle, let the image that people's eye saw be at long-distance enlarged image, for example national standard's eyesight test distance is 5 meters distance, just set 5 meters, at this moment, closely minute detection pattern, can be seen as long-distance enlarged pattern by people's eye, realize the 5 meters test of the visual chart of international medical industry.

Adopt the eyesight detection device of this application, eliminated the loaded down with trivial details of original test mode, only need lean on eyesight detection device on people's eye, whether have a problem with the eyesight of people's eye (like myopia etc.) just can be detected out, the cost is reduced is favorable to more crowds to use, can test anytime and anywhere. The vision detection device has no requirement on the posture of a human body of a tester, can be used for testing in a comfortable posture, can detect the vision anytime and anywhere, and finds out the vision problem as soon as possible so as to take a proper mode to protect the vision.

Example two:

as shown in fig. 3 to 8, the present embodiment provides a vision testing apparatus, which is different from the first embodiment in that the testing component 200 further includes a selection mechanism.

The pattern piece 210 may also be provided with a plurality of detection zones, which may include a far vision detection zone, an astigmatism detection zone, a presbyopia detection zone and/or a near vision detection zone, the detection zones being provided with corresponding vision test charts. The selection mechanism is used for selecting the detection area in the pattern piece 210, so that the selected detection area is located in the optical path, and the vision can be correspondingly detected.

Further, the selection mechanism may include a second housing 220, a fixing member, and a switch member; the second housing 220 has a second cavity 221, a third opening 222 and a fourth opening (not shown), the fixing member is disposed in the second cavity 221 for fixing the pattern piece 210, the first housing 110 further has a fifth opening 112, the third opening 222 and the second cavity 221 are through, and the pattern piece 210 passes through the fifth opening 112 and the third opening 222 and is partially disposed in the second cavity 221. One end of the switch is embedded in the fourth opening, the other end of the switch is disposed in the second cavity 221, and pressing the switch can push the pattern piece 210 to rotate, so as to select the test area, and make the selected detection area located in the light path.

Further, the fixing member may include a fixing shaft 233, a first fixing plate 231 and a second fixing plate 232, through holes are respectively formed on the pattern piece 210, the first fixing plate 231 and the second fixing plate 232, the pattern piece 210 is clamped between the first fixing plate 231 and the second fixing plate 232, and the fixing shaft 233 is inserted into the through holes and fixed on the second housing 220.

Further, the switch member may include a first button 241, a push rod 242, and a return spring 243, the first button 241 and the return spring 243 are respectively disposed at both ends of the push rod 242, the first button 241 is embedded in the fourth opening, and the return spring 243 is fixed inside the second housing 220.

Further, the selection mechanism may further include a limiting member, the limiting member may include a bracket (not shown) and a one-way elastic locking plate 251, the bracket is linked with the switch member, the first fixing plate 231 is provided with a plurality of bosses 234, the bosses 234 may be provided in plurality, the circumference of the second fixing plate 232 is provided with a plurality of notches 235, the notches 235 may specifically correspond to the detection area, the push rod 242 is provided with a groove 244, the groove 244 is engaged with the bosses 234, when the first button 241 is pressed, the groove 244 blocks the bosses 234, the push rod 242 pushes the first fixing plate 231 to drive the pattern plate 210 to rotate, when the first button 241 is released, the first button 241 bounces 243 under the action of the return spring, the one-way elastic locking plate 251 blocks the notches 235 of the second fixing plate 232, and the pattern plate 210 stops rotating.

Press first button 241, can drive push rod 242, promote the pattern piece 210 that is printed with different patterns, a round is equipped with sunken breach 235 around the second stationary blade 232, the quantity of breach 235 corresponds with the quantity in detection area, one-way elastic locking piece 251 is pressed in breach 235, prevent that pattern piece 210 from removing, press first button 24 at every turn, push rod 242 promotes the in-process of pattern piece 210, one-way elastic locking piece 251 is opened, pattern piece 210 moves to the position in next detection area, then loosen the hand, first button 241 is bounced by reset spring 243, the breach of second stationary blade 232 is blocked by one-way elastic locking piece, accomplish the process of pattern change.

Further, the vision detection apparatus provided by this embodiment may also be connected to a mobile terminal, such as a mobile phone, through a network, and specifically, an APP may be installed on the mobile terminal. The selection mechanism may further include a control module 261 and a second button 262, where the control module 261 is used to connect to an external network, and when the second button 262 is pressed, the detection data may be transmitted to the APP of the mobile terminal through the control module 261, so as to facilitate network consultation and subsequent services.

This application is through becoming the parallel light to light, the parallel light passes transparent pattern piece, transparent pattern piece this moment is regarded as the object and can be passed through first lens formation of image, then the formation of image that first lens becomes, can be regarded as the object by the second lens and form of image again, technical personnel in the field can know, formation of image this moment is the extension image of people's eye straight line vision from optical angle, let the image that people's eye saw be at long-distance enlarged image, for example national standard's eyesight test distance is 5 meters distance, just set 5 meters, at this moment, closely minute detection pattern, can be seen as long-distance enlarged pattern by people's eye, realize the 5 meters test of the visual chart of international medical industry. The pattern piece can be rotated through button one-way control, and the pattern piece has various different patterns to carry out vision test, for example the myopia region of different size patterns, the hyperopia region, astigmatism region, achromatopsia weak point, etc. all can add to the pattern piece, have corresponding vision data in the pattern, press the button as people's hand, just can detect different vision problems according to different patterns to accomplish the test of relevant vision problem, as the early prevention test of the vision problem of commonly using, can satisfy the requirement completely.

The working process of the vision testing device (taking the imaging component provided with two lenses as an example for explanation) of the application is as follows:

for the device using the natural light, the natural light passes through the light inlet sheet and then is irradiated onto the parallel light lens through the light control sheet which only has the light transmission center to generate the parallel light, for the device using the light source, the battery drives the light emitting light source and simultaneously drives the photosensitive element, the brightness of the light emitting light source is controlled to be consistent through the photosensitive element, and when the light of the light emitting light source is irradiated onto the parallel light lens, the parallel light is generated. When parallel light passes through the pattern sheet in parallel, the pattern of the vision test chart is projected on the first lens, the first lens generates an image between the first lens and the second lens, then the second lens takes the image as an input, the image is magnified and the image is imaged at a long distance, in fig. 8, 500 is a human eye, a is a long-distance imaging position, and L is a distance between the human eye and the long-distance imaging position. The detection zone may include a far vision detection zone, an astigmatism detection zone, a presbyopia detection zone and/or a near vision detection zone, the detection zone being provided with a corresponding vision test chart. Have corresponding vision data in the visual acuity test table, contrast vision data, just can know that eyesight has which problem, convenient quick understanding user's vision problem to go to hospital or glasses shop in advance and handle.

The foregoing is a more detailed description of the present application in connection with specific embodiments thereof, and it is not intended that the present application be limited to the specific embodiments thereof. It will be apparent to those skilled in the art from this disclosure that many more simple derivations or substitutions can be made without departing from the spirit of the disclosure.

Claims

1. A vision detection device is characterized by comprising a light generation assembly, a detection assembly, an imaging assembly and a first shell;

the light generating assembly is used for generating parallel light beams;

2. The apparatus of claim 1, wherein the light generating assembly comprises an incident light generating mechanism and a collimating lens;

3. The apparatus of claim 2, wherein the incident light generating mechanism comprises a light source and a control circuit;

the light source; for generating incident light;

the control circuit is used for controlling the light source.

4. The apparatus of claim 2, wherein the incident light generating mechanism comprises a light control sheet;

the cover body comprises a light incident sheet for emitting light;

5. The apparatus of claim 1, wherein the imaging assembly comprises a first lens and a second lens;

6. The device of any one of claims 1 to 5, wherein the pattern piece is provided with a plurality of detection zones, including a far vision detection zone, an astigmatism detection zone, a presbyopia detection zone and/or a near vision detection zone, said detection zones being provided with corresponding vision test charts.

7. The apparatus of claim 6, wherein the detection component further comprises a selection mechanism;

8. The apparatus as claimed in claim 7, wherein the fixing member includes a fixing shaft, a first fixing plate and a second fixing plate, the pattern plate, the first fixing plate and the second fixing plate are respectively provided with through holes, the pattern plate is clamped between the first fixing plate and the second fixing plate, and the fixing shaft is inserted into the through holes and fixed to the second housing.

9. The apparatus of claim 8, wherein the switch member comprises a first button, a push rod, and a return spring, the first button and the return spring are respectively disposed at two ends of the push rod, the first button is embedded in the fourth opening, and the return spring is fixed in the second housing.

10. The device of claim 9, wherein the selection mechanism further comprises a limiting member, the limiting member comprises a bracket and a one-way elastic locking plate, the bracket is linked with the switch member, the first fixing plate is provided with a plurality of bosses, the circumference of the second fixing plate is provided with a plurality of notches, the notches correspond to the detection area, the push rod is provided with a groove, and when the first button is pressed, the groove blocks the bosses to enable the push rod to push the first fixing plate.