CN206597013U - A kind of Vission detector - Google Patents
A kind of Vission detector Download PDFInfo
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- CN206597013U CN206597013U CN201620957338.0U CN201620957338U CN206597013U CN 206597013 U CN206597013 U CN 206597013U CN 201620957338 U CN201620957338 U CN 201620957338U CN 206597013 U CN206597013 U CN 206597013U
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- character
- positive lens
- film
- character list
- small characters
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Abstract
The utility model belongs to eyesight detection technique field.Easily affected by environment by the progress eyesight detection of existing eye present in prior art to solve, there is provided a kind of Vission detector, including positive lens and character list for the technical problem that testing result easily malfunctions；The character list is provided with more than one small characters；The distance between the positive lens and character list are X, and the small characters length of side of the small characters is M.The utility model has simple and practical, the characteristics of eyesight testing result is accurate；The utility model has advantage simple in construction, easy to operate.The utility model have it is simple in construction, it is easy to operate, be easy to carry, check oneself at any time, the characteristics of taking at any time eliminates the defect of the existing presence that given a test of one's eyesight by visual chart；And automation is realized using electricity power-equipment on the basis of the device, so as to reach simple to operate, easy to use, the accurate effect of testing result.
Description
Technical field
The utility model belongs to eyesight detection technique field, and in particular to a kind of Vission detector.
Background technology
For the detection of eyesight, the way of Global Access is given a test of one's eyesight by using standard visual acuity chart.Eyesight
Table is the principle design according to visual angle.So-called visual angle is exactly, by the extraneous 2 points light sent, to be formed through intraocular node
Angle.Under normal circumstances, human eye can tell the visual angle that the minimum range of point-to-point transmission formed and be regarded for minimal visual angle, i.e., one point
Angle.Visual chart is designed in units of one point of visual angle.Test eyesight and be generally divided into distant vision and the class of near vision two, state
Border standard visual acuity chart is made up of different " E " word of 12 rows opening direction of different sizes；Measurement is from 0.1-1.5 (or from 4.0-
5.2)；Often row has label, and the sight of examinee is parallel with 1.0 a line, and apart from 2-10 meters of visual chart, (China's national standard uses 5
Rice), the distance of visual chart and those who are investigated must be fixed, and patient is 2-10 meters away from table.When such as indoor distances are inadequate 2-10 meters long,
It should then be detected by holding plane mirror to reflect visual chart.Detected and first covered at a glance, it is simple eye to recognize " E " from top to bottom
Word breach direction, untill it can not recognize, is recorded.And there is following defect in above prior art, 1, detection regards
2-10 meters of indoor distances are needed during power or detecting distance is shortened by holding plane mirror；2nd, quiet ring is needed
Border, testing result is easily affected by environment such as illumination；3rd, " E " character arrangements are fixed, and the memory of testee can affect one's power of vision detection
As a result；4th, tester and measured is needed to cooperate, easily error；5th, farther out, subjective judgement can influence detection to measuring distance
Accuracy.
Utility model content
It is practical there is provided a kind of easy that the purpose of this utility model is to solve technical problem of the prior art above
Vission detector.
The purpose of this utility model is achieved through the following technical solutions：
A kind of Vission detector, including positive lens and character list；The character list is provided with more than one small characters；
The distance between the positive lens and character list are X, and the small characters length of side of the small characters is M.
Further improve is, in addition to light room and the light source for character list light filling, and the positive lens is located at the one of light room
End, the character list is located at the other end of light room, and the light source is in light room.
Further improve is, in addition to one is used for control character table and the small characters in the positive lens visual field is changed
Control device.
Further improve is that the control device includes character adjusting apparatus and control system, the character adjustment dress
Put the first motor being connected including graticle and with the center of graticle；The character list is located on graticle；The control system
System includes the first single-chip microcomputer being connected with the first motor, the first input block and first being connected respectively with the first single-chip microcomputer
Output unit.
Further improve is that the control device includes character adjusting apparatus and control system, the character adjustment dress
Put be connected including film, respectively with the two ends of film two film spools for being used for scrolling film, respectively with two film rolls
The second motor that axle is connected, the character list is located on film；The control system includes second be connected with the second motor
Single-chip microcomputer, the second input block being connected respectively with second singlechip and the second output unit, it is connected with second singlechip
Backlight；The backlight is film light filling.
Further improve is that the control device includes control system；The control system include the 3rd single-chip microcomputer, with
The connected display screen of 3rd single-chip microcomputer, the 3rd input block and the 3rd output unit that are connected with the 3rd single-chip microcomputer, character list are set
On a display screen.
The utility model is relative to the beneficial effect of prior art：Vission detector of the present utility model is according to national standard
Or the producing principle combination optical principle of the international standard eyesight table of comparisons, by existing testing conditions it is harsh, be not convenient to use
Standard visual acuity chart is realized by corresponding optical instrument and equipment；After corresponding formula scales, drawn according to conversion
The Vission detector that data are made have it is simple in construction, it is easy to operate, be easy to carry, check oneself at any time, the characteristics of taking at any time,
Eliminate the defect of the existing presence that given a test of one's eyesight by visual chart；And it is real using electricity power-equipment on the basis of the device
The automation of existing Vission detector of the present utility model, so as to reach simple to operate, easy to use, testing result is accurately imitated
Really.
Brief description of the drawings
Fig. 1 eyesight Cleaning Principle schematic diagrames of the present utility model.
The Vission detector principle schematic of Fig. 2 the utility model embodiment 1.
The Vission detector principle schematic of Fig. 3 the utility model embodiment 2.
The Vission detector principle schematic of Fig. 4 the utility model embodiment 3.
Fig. 5 Vission detector overall structure figures of the present utility model.
The theory diagram of Fig. 6 control systems of the present utility model.
Wherein, corresponding reference is in accompanying drawing, 1- primary optic axis, the positive lens of 2- the 3rd, 3- second singlechips, 4- glue
Scroll attachment, 5- films, the motors of 6- second, 7- backlights, the display screens of 8- first, 9- directional pads, 10- second display screens, 11-
Printer, 12- microphones, the optical axises of 13- second, the positive lens of 14- first, the positive lens of 15- second, 16- graticles, the horses of 17- first
Reach, 18- supplementary lighting sources, 19- loudspeakers, the single-chip microcomputers of 20- first, 21- rocking bar input blocks, the single-chip microcomputers of 22- the 3rd.
Embodiment
The technical scheme of Vission detector of the present utility model is carried out specifically below in conjunction with drawings and examples
It is bright, so that what those skilled in the art can be sufficiently complete on the basis of the utility model has been read realizes the utility model
Technical scheme, and solve problems of the prior art to be solved in the utility model.It should be noted that below only
It is preferred embodiment of the present utility model, for the person of ordinary skill of the art, is not departing from the utility model wound
On the premise of making design, various modifications and improvements can be made, these should belong to protection domain of the present utility model.
Technical characteristic of the present utility model can be with independent assortment, and the technical scheme after it is combined still falls within the utility model
Protection domain.
Embodiment illustrates eyesight of the present utility model with reference to the logarithmic visual acuity chart being made according to national standard GB11533-2011
Cleaning Principle.The logarithmic visual acuity chart being made according to national standard GB11533-2011, the measuring distance of the logarithmic visual acuity chart is 5 meters, i.e.,
Image distance L is 5 meters；" E " font word in the logarithmic visual acuity chart is designated as square.
The character length of side described in the utility model is the length of side in the smallest square region residing for character.
First formula and the second formulation process of the present utility model are as follows：
As shown in figure 1, object distance is X, focal length of lens f, image distance L between lens and imaging surface between character board and lens
Known focal length f, setting image distance L (L=2000mm~10000mm, L numerical value for the character list of institute's reference test
Distance), can be according to formula
Calculate object distance X；
So, the second formula is just
Wherein, X is object distance, and L is image distance, and M is the small characters length of side on character board, and N is the national standard character length of side；
Substitute into after above formula, obtain
The method for realizing Vission detector of the present utility model, including step：
A, selection positive lens, obtain positive lens focal length f；
B, object distance and the small characters length of side calculated according to formula；
B1. the first formulaIn first formula, L：Image distance, f：Positive lens focal length, X：Object distance；According to the first formula meter
Calculate object distance X；
B2. the second formulaIn second formula, L：Image distance, M：The small characters length of side, N：The national standard character length of side, X：Thing
Away from；Small characters length of side M is calculated according to the second formula；
C, small characters are set in using small characters length of side M as the square region of the length of side, and by the positive lens be arranged on away from
At small characters X.
Further improve is that N described in step B step b2 is the word of character in chinese national standard logarithmic visual acuity chart
Accord with the length of side.
Further improve is that step C also includes the small characters being located on character list, and the character list is located at from just
At lens X.
The image distance L is the measuring distance of logarithmic visual acuity chart, and L is 2000mm-10000mm.
By taking the logarithmic visual acuity chart that national standard GB11533-2011 is made as an example.
A, selection positive lens, obtain positive lens focal length f；For example, it is 200mm to choose positive lens focal length f；
Step B b1：The measuring distance required in the logarithmic visual acuity chart being made according to national standard GB11533-2011, selectes picture
Value away from L be 5000mm, generally as away from L be 2000mm~10000mm；According to the first formulaCalculate X value, X
=192.3mm；
Step B b2：The character length of side of each line character in the logarithmic visual acuity chart being made according to national standard GB11533-2011,
According to the second formulaCalculate the small characters length of side；Such as 5.0 eyesight in the logarithmic visual acuity chart that GB11533-2011 is made
The character length of side is：7.27mm, i.e. N value are 7.27mm；Image distance L values are 5000mm；Small characters are calculated by the second formula
Length of side M=0.280mm；
Calculate the small characters length of side per a line in the same way or first calculate the small character of the wherein character of a line
Accord with the length of side, or according in visual chart adjacent rows character exist withThe mathematical relationship of increasing or decreasing, is calculated every
The small characters length of side of the small characters of a line, due to the national standard GB11533-2011 logarithmic visual acuity charts being made or other visual charts
In character residing for region be square, therefore, need to only calculate the value of the one of small characters length of side of character i.e. can be with
Determine the size of small characters.
C：Small characters are set, according to according to the small characters length of side calculated, small characters are set；Positive lens is placed on distance
Small characters X=192.3mm, you can carry out eyesight detection, it is preferable that the numerical value according to calculating sets small character on graticle
Symbol, the graticle for being provided with small characters is disposed vertically at positive lens X, observes small characters to realize inspection by positive lens
Survey the purpose of eyesight.
Embodiment 1
As shown in Fig. 2 a kind of Vission detector, including positive lens and character list；The character list provided with one with
On fresh character；The distance between the positive lens and character list are X, and the fresh character length of side of the fresh character is M.
As shown in Fig. 2 the positive lens includes the first positive lens 14 and the second positive lens 15, it is placed side by side when using, its
The distance between spacing and people two matches；The character list comprising more than one fresh character is arranged on graticle 16
On；The fresh character on graticle 16, graduation are can see by the second optical axis 13 of the first positive lens 14 and the second positive lens 15
Plate 16 is disposed vertically at the X of distance the first positive lens 14 and the second positive lens 15.
Further improve is, in addition to light room and the light source for character list light filling, and the positive lens is located at the one of light room
End, the character list is located at the other end of light room, and the light source is in light room.
The positive lens 15 of first positive lens 14 and second is disposed side by side on one end of light room, and graticle 16 is arranged on light room
The other end, the light source be supplementary lighting sources 18；The supplementary lighting sources 18 are arranged in light room, for making to the light filling of graticle 16
Fresh character on graticle 16 is shown in the visual field of the first positive lens 14 and the second positive lens 15 by the irradiation of light.
Further improve is, in addition to one is used for control character table and the fresh character in the positive lens visual field is changed
Control device.
Further improve is that the control device includes character adjusting apparatus and control system, the character adjustment dress
Put the first motor being connected including graticle and with the center of graticle；The character list is located on graticle；The control system
System includes the first single-chip microcomputer being connected with the first motor, the first input block and first being connected respectively with the first single-chip microcomputer
Output unit.
As shown in Fig. 2 the control device includes character adjusting apparatus and control system.
As shown in Fig. 2 the graticle 16 is circular configuration, the character adjusting apparatus includes the center with graticle 16
First motor 17 of connection, drives graticle 16 to rotate by the rotation of the first motor 17, so that the first positive lens 14 and the
Fresh character in the visual field of two positive lens 15 changes.As shown in fig. 6, the control system includes being connected with character adjusting apparatus
The first single-chip microcomputer 20, the first input block and the first output unit that are connected with the first single-chip microcomputer 20, first single-chip microcomputer
20 are connected with the first motor 17；First single-chip microcomputer 20 is used for the rotation for controlling the first motor 17, passes through programme-control first
The rotation of motor 17 adjusts the fresh character that graticle 16 is rested in the first positive lens 14 and the visual field of the second positive lens 15 to realize；
As shown in Fig. 2 first input block is rocking bar input block 21, the first output unit is loudspeaker 19；When giving a test of one's eyesight
When, the directional information for the character seen is inputted by rocking bar, single-chip microcomputer is received after the information, progress judges whether to properly generate
Examining report, the result that eyesight is detected is played by loudspeaker 19.Preferably, first single-chip microcomputer 20 is also connected with cloud platform,
First single-chip microcomputer 20 will detect that obtained eyesight detection data are sent to cloud platform and backed up, and user is obtained by cloud platform
Take examining report.
As a preferred embodiment, the character list is arranged on the light guide plate or graticle 16 of circular configuration, word
Symbol be distributed in annular shape on light guide plate or graticle 16, the control device include rotary shaft, one end of the rotary shaft and
The center of light guide plate or graticle 16 is connected, and the other end of rotary shaft is connected with rotating handle.The light guide plate or graduation
The center of plate 16 is connected with rotary shaft, makes rotary shaft drive light guide plate or graticle 16 to rotate by rotating handle, works as leaded light
When character on plate or graticle 16 enters the visual field of positive lens, supplementary lighting sources 18 observe character to its light filling by positive lens
And realize the purpose of eyesight detection.
Embodiment 2
As shown in Figure 3, a kind of Vission detector, including positive lens and character list；The character list is provided with one
Fresh character above；The distance between the positive lens and character list are X, and the fresh character length of side of the fresh character is M.
The positive lens is the 3rd positive lens 2, and the character list is located on film 5, passes through the first light of the 3rd positive lens 2
The fresh character in the character list on film 5 can be seen in axle 1, and the length of side of the fresh character is M；3rd positive lens 2 and film
5 distance is X.
Further improve is, in addition to light room and the light source for character list light filling, and the positive lens is located at the one of light room
End, the character list is located at the other end of light room, and the light source is in light room.
3rd positive lens 2 is located at one end of light room, and film 5 is located at the other end of light room, its overall diagram such as Fig. 5 institutes
Show；As shown in figure 3, the light source is backlight 7, the backlight 7 is located at the rear of film 5, is the light filling of film 5.The glue
The left and right sides of piece 5 is connected with a film spool 4 respectively, by the rotation of film spool 4, control the moving direction of film 5 from
And the fresh character in the visual field of the 3rd positive lens 2 is changed.
Further improve is, in addition to one is used for control character table and the fresh character in the positive lens visual field is changed
Control device.
Further improve is that the control device includes character adjusting apparatus and control system, the character adjustment dress
Put be connected including film, respectively with the two ends of film two film spools for being used for scrolling film, respectively with two film rolls
The second motor that axle is connected, the character list is located on film；The control system includes second be connected with the second motor
Single-chip microcomputer, the second input block being connected respectively with second singlechip and the second output unit, it is connected with second singlechip
Backlight；The backlight is film light filling.
The control device includes character adjusting apparatus and control system, and the character adjusting apparatus includes and each glue
Two the second motors 6 that the downside of scroll attachment 4 is respectively connected with, are respectively that film spool 4 provides power by the second motor 6, from
And realize moving left and right for film 5；The control system include be connected respectively with two the second motors 6 second singlechip 3, divide
The input block and output unit not being connected with second singlechip 3；The second singlechip 3 is used to control two the second motors 6
Rotation, by the rotation direction of two the second motors 6 of programme-control, to realize adjustment film 5, to rest on the 3rd just saturating with rotating speed
Fresh character in the visual field of mirror 2；Preferably, the backlight 7 is connected with second singlechip 3；As described in Figure 3, second input
Unit is directional pad 9, and the second output unit is the first display screen 8；During detection, regarded by the input of the input block of directional pad 9
The directional information of the opening direction for the fresh character that power tester sees, second singlechip 3 generates examining report after receiving the information,
Shown by the first display screen 8；Preferably, the second singlechip 3 is also associated with cloud platform by the examining report of generation
Backed up in cloud platform and be sent to the mobile phone terminal of human observer.
Embodiment 3
As shown in figure 4, a kind of Vission detector, including positive lens and character list；The character list provided with one with
On fresh character；The distance between the positive lens and character list are X, and the fresh character length of side of the fresh character is M.
As shown in figure 4, the positive lens is the 3rd positive lens 2, the character list is shown by second display screen 10；
The distance of the positive lens 2 of second display screen 10 and the 3rd is that the fresh character length of side in X, the character list is M；By the 3rd just
The fresh character on character list in second display screen 10 can be seen in the primary optic axis 1 of lens 2.
Further improve is, in addition to light room and the light source for character list light filling, and the positive lens is located at the one of light room
End, the character list is located at the other end of light room, and the light source is in light room.
As shown in figure 4, the 3rd positive lens 2 is located at one end of light room, the second display screen 10 is located at the another of light room
One end, its overall diagram is as shown in Figure 5.The light source is second display screen 10, and the character list is shown by second display screen 10
While, illuminate into the fresh character in the visual field of the 3rd positive lens 2 to realize that eyesight is examined by the light of second display screen 10
Survey.
Further improve is, in addition to one is used for control character table and the fresh character in the positive lens visual field is changed
Control device.
Further improve is that the control device includes control system；The control system include the 3rd single-chip microcomputer, with
The connected display screen of 3rd single-chip microcomputer, the 3rd input block and the 3rd output unit that are connected with the 3rd single-chip microcomputer, character list are set
On a display screen.
As shown in figure 4, the 3rd input block is microphone 12, the 3rd output unit is printer 11, and the display screen is
Second display screen 10.
As shown in figure 4, the control device includes control system.The control system includes being connected with second display screen 10
The 3rd single-chip microcomputer 22, the microphone 12 being connected with the 3rd single-chip microcomputer 22, the printer 11 that is connected with the 3rd single-chip microcomputer 22.
Display of the control character table of 3rd single-chip microcomputer 22 on second display screen 10, by programme-control character table
Fresh character change；Primary optic axis 1 along the 3rd positive lens 2 can see the fresh character on second display screen 10 clearly.
When eyesight is detected, person under test inputs the opening orientation information of seen character, the 3rd single-chip microcomputer by voice from microphone 12
22 pairs of information are identified and judge whether to properly generate examining report, and carry out printing examining report by printer 11.
The technical solution of the utility model can preferably be realized according to the content of this disclosure.
Claims (6)
1. a kind of Vission detector, it is characterised in that including positive lens and character list；The character list is provided with more than one
Small characters；The distance between the positive lens and character list are X, and the small characters length of side of the small characters is M.
2. Vission detector according to claim 1, it is characterised in that also including light room and be the light of character list light filling
Source, the positive lens is located at one end of light room, and the character list is located at the other end of light room, and the light source is in light room.
3. Vission detector according to claim 2, it is characterised in that being also used for control character table including one makes word
The control device that small characters in symbol table change in the positive lens visual field.
4. Vission detector according to claim 3, it is characterised in that the control device includes character adjusting apparatus
And control system, the character adjusting apparatus includes graticle and the first motor for being connected with the center of graticle；The character
Table is located on graticle；The control system includes the first single-chip microcomputer being connected with the first motor, respectively with the first single-chip microcomputer
The first input block and the first output unit being connected.
5. Vission detector according to claim 3, it is characterised in that the control device includes character adjusting apparatus
And control system, the character adjusting apparatus includes film, be connected respectively with the two ends of film two for scrolling film
Film spool, the second motor being connected respectively with two film spools, the character list are located on film；The control system
Including the second singlechip being connected with the second motor, the second input block being connected respectively with second singlechip and the second output
Unit, the backlight being connected with second singlechip；The backlight is film light filling.
6. Vission detector according to claim 3, it is characterised in that the control device includes control system；Institute
Stating control system includes the 3rd single-chip microcomputer, the display screen being connected with the 3rd single-chip microcomputer, the 3rd input being connected with the 3rd single-chip microcomputer
Unit and the 3rd output unit, character list are set on a display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620957338.0U CN206597013U (en) | 2016-08-26 | 2016-08-26 | A kind of Vission detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620957338.0U CN206597013U (en) | 2016-08-26 | 2016-08-26 | A kind of Vission detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206597013U true CN206597013U (en) | 2017-10-31 |
Family
ID=60149087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620957338.0U Withdrawn - After Issue CN206597013U (en) | 2016-08-26 | 2016-08-26 | A kind of Vission detector |
Country Status (1)
| Country | Link |
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| CN (1) | CN206597013U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106137116B (en) * | 2016-08-26 | 2018-05-25 | 四川远瞻智汇科技有限公司 | A kind of vision testing method and device |
| CN108549145A (en) * | 2018-05-30 | 2018-09-18 | 四川远瞻智汇科技有限公司 | A kind of new construction of list object binocular |
-
2016
- 2016-08-26 CN CN201620957338.0U patent/CN206597013U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106137116B (en) * | 2016-08-26 | 2018-05-25 | 四川远瞻智汇科技有限公司 | A kind of vision testing method and device |
| CN108549145A (en) * | 2018-05-30 | 2018-09-18 | 四川远瞻智汇科技有限公司 | A kind of new construction of list object binocular |
| CN108549145B (en) * | 2018-05-30 | 2021-08-31 | 四川远瞻智汇科技有限公司 | New structure of single-object binocular |
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Granted publication date: 20171031 Effective date of abandoning: 20180525 |
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