CN108272431B - Eye interpupillary distance measuring device and method - Google Patents
Eye interpupillary distance measuring device and method Download PDFInfo
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- CN108272431B CN108272431B CN201810116823.9A CN201810116823A CN108272431B CN 108272431 B CN108272431 B CN 108272431B CN 201810116823 A CN201810116823 A CN 201810116823A CN 108272431 B CN108272431 B CN 108272431B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 52
- 210000001747 pupil Anatomy 0.000 claims abstract description 52
- 238000005259 measurement Methods 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 230000003993 interaction Effects 0.000 claims abstract description 7
- 210000003128 head Anatomy 0.000 claims abstract description 4
- 230000003287 optical effect Effects 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 11
- 230000001960 triggered effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 description 5
- 230000004438 eyesight Effects 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000004350 Strabismus Diseases 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000004456 color vision Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000006694 eating habits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000001179 pupillary effect Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0075—Apparatus for testing the eyes; Instruments for examining the eyes provided with adjusting devices, e.g. operated by control lever
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Abstract
The invention discloses an eye pupil distance measuring device and method, wherein the device comprises a body and an intelligent terminal for graphic display, man-machine interaction and data processing, wherein the intelligent terminal is in data communication with the body in a wireless or wired mode; the body comprises a shell which is convenient for the head of a tested person to wear, two groups of cylindrical light cylinders used for respectively testing two eyes are arranged in parallel in the inner cavity of the shell, and a slit sheet with a slit is arranged at one end, close to the eyes, of the cylindrical light cylinder; the shell is provided with a transverse moving mechanism for changing the left and right positions of the cylindrical light cylinder in the shell and a control mechanism for realizing mutual communication with the intelligent terminal; the human eyes are located at the tail end of the light path of the body, and the intelligent terminal is embedded at the initial end of the light path of the body. When the invention is used for measuring the interpupillary distance of eyes, the interpupillary distance of the eyes can be objectively measured by testing the eyes, and the invention has the advantages of high measurement precision and strong operability.
Description
Technical Field
The invention relates to the technical field of optical equipment, in particular to a device and a method for measuring eye interpupillary distance.
Background
The eyes are the most precise organs on the human body, and the working environments of the eyes are greatly different (such as different distances, different illumination conditions and the like), so the eyes are required to be adjusted according to different working environments so as to clearly see external objects. However, in life and work, people are not using eyes at any time, and with popularization of intelligent electronic equipment and bad habit of daily eyes, the eyes of people are more prone to fatigue and other symptoms. Therefore, in order to protect eyesight, it is necessary to periodically detect the state of the eyes.
In a typical vision test, the interpupillary distance is an important indicator for the test. In fitting the glasses, it is necessary to determine the far and near pupillary distances of the eyes to determine the center of the glasses. The existing tool for measuring the pupil distance mainly comprises a pupil distance meter and a computer optometry instrument, wherein the computer optometry instrument is expensive and cannot enter a common household for daily detection; most of the conventional centrometer has the problem of poor measurement accuracy and operability.
Disclosure of Invention
The invention aims to solve the technical problems of providing the eye pupil distance measuring device and the method which have low cost and can be popularized and applied in ordinary families, have higher measuring precision and operability, and are convenient for people to carry out eye self-test.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
The eye pupil distance measuring device comprises a body and an intelligent terminal for graphic display, man-machine interaction and data processing, wherein the intelligent terminal is in data communication with the body in a wireless or wired mode; the body comprises a shell which is convenient for the head of a tested person to wear, two groups of cylindrical light cylinders used for respectively testing two eyes are arranged in parallel in the inner cavity of the shell, and a slit sheet with a slit is arranged at one end, close to the eyes, of the cylindrical light cylinder; the shell is provided with a transverse moving mechanism for changing the left and right positions of the cylindrical light cylinder in the shell and a control mechanism for realizing mutual communication with the intelligent terminal; the human eyes are located at the tail end of the light path of the body, and the intelligent terminal is embedded at the initial end of the light path of the body.
The eye pupil distance measuring device comprises a substrate which is arranged in the shell and has an incident light selecting function, wherein two parallel slit seams or two opposite small holes are vertically formed in the substrate at positions corresponding to eyes of a tested person, and the distance between the two slit seams or small holes is 2.5+/-2 mm.
The control mechanism comprises an operation button, a displacement identifier, a signal processing unit and a communication unit, wherein the signal processing unit is respectively connected with the operation button and the displacement identifier, and the signal processing unit is mutually communicated with the intelligent terminal through the communication unit.
According to the eye pupil distance measuring device, the intelligent terminal displays the test pattern and the shielding pattern on the screen at the same time respectively aiming at the tested eye and the relaxed eye in the measuring state, wherein the test pattern is a single background and two parallel vertical bars with different colors, and the shielding pattern is a black background.
The eye interpupillary distance measuring method specifically comprises the following steps:
1) Placing the intelligent terminal at the initial end of the optical path of the body;
2) The eyes are tightly attached to the tail end of the light path of the body;
3) The transverse moving mechanism is adjusted, so that eyes can clearly see the optotype in the intelligent terminal screen test pattern;
4) The distance and near-pupil distance of the eye are measured separately.
The method for measuring the distance between pupils in the step 4) comprises the following steps: the intelligent terminal displays a measurement pattern corresponding to a screen display on one side of the tested eye and a shielding pattern corresponding to a screen display on the other side of the tested eye through the control mechanism; the left and right positions of the cylindrical light cylinder and the slit sheet in the cylindrical light cylinder are adjusted through the left and right linear adjusting transverse moving mechanism, and at the moment, the optotype in the measurement pattern synchronously moves along with the slit sheet; when pupils of eyes of a tested person, slit seams on the slit sheets and optotypes in the measuring patterns of the intelligent terminal are in a straight line, namely, the tested eyes can clearly see the optotypes in the measuring patterns, the movement is stopped, meanwhile, a control mechanism is triggered, measured data are transmitted to the intelligent terminal through a communication module, and the intelligent terminal calculates a monocular distance pupil according to the distance between the center of the current slit sheet and the center of the shell; then, changing the pattern in the screen of the intelligent terminal through the control mechanism, and repeating the operation to measure the distance between the pupils of the other eye; and finally, adding the single-eye interpupillary distances of the two eyes to obtain the far interpupillary distance of the two eyes of the tested person.
In the above eye pupil distance measurement method, the near pupil distance measurement method in step 4) is as follows: the intelligent terminal displays a measurement pattern corresponding to a screen display on one side of the tested eye and a shielding pattern corresponding to a screen display on the other side of the tested eye through the control mechanism; the position of the cylindrical light cylinder is kept unchanged, the intelligent terminal is moved to the central axis side of the shell through the control mechanism to measure the sighting target in the pattern, and the sighting distance between the simulated eyes and the imaging point is a near sighting distance; then the left and right positions of the cylindrical light cylinder and the slit sheet in the cylindrical light cylinder are adjusted through the left and right linear adjusting transverse moving mechanism, and at the moment, the optotype in the measuring pattern synchronously moves along with the slit sheet; when pupils of eyes of a tested person, slit seams on the slit sheets and optotypes in the measuring patterns of the intelligent terminal are in a straight line, namely, the tested eyes can clearly see the optotypes in the measuring patterns, the movement is stopped, meanwhile, a control mechanism is triggered, measured data are transmitted to the intelligent terminal through a communication module, and the intelligent terminal calculates a monocular near pupil distance according to the distance between the center of the current slit sheet and the center of the shell; then, changing the pattern in the screen of the intelligent terminal through the control mechanism, and repeating the operation to measure the near pupil distance of the other eye; and finally, adding the single-eye interpupillary distances of the two eyes to obtain the near interpupillary distances of the two eyes of the tested person.
By adopting the technical scheme, the invention has the following technical progress.
The invention uses the intelligent terminal as the virtual reality equipment for display, realizes the detection of the eye pupil distance by means of the pupil distance detection device body, has low cost, simple interaction form and convenient operation, and the detection judgment is realized in a subjective mode with obvious limit and has high accuracy. When the invention is used, the pupil distance of the person to be detected can be conveniently and objectively detected without the assistance of a third person or even a third person with abundant experience, so that a person to be detected can conveniently and accurately grasp the development state of the eyes of the person to be detected in time, and a good effect is achieved on preventing the myopia of teenagers.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of another embodiment of a slit sheet according to the present invention;
fig. 3 is a schematic diagram of the change of the optotype position in the interpupillary distance measurement in the present invention.
Wherein: 1. the device comprises a shell, a crack piece, an intelligent terminal and eyes, wherein the crack piece is arranged on the shell, the intelligent terminal is arranged on the crack piece, and the eyes are arranged on the intelligent terminal.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
The utility model provides an eye interpupillary distance measuring device, includes body and intelligent terminal, and the body is used for changing light optical path, and intelligent terminal 5 is used for graphic display, human-computer interaction and data processing, and intelligent terminal carries out data communication with the body through wireless or wired mode.
The body of the invention comprises a shell 1 which is convenient for the head of a tested person, wherein two groups of cylindrical light cylinders for respectively testing two eyes are arranged in parallel in the inner cavity of the shell 1, and a slit sheet with a slit is arranged at one end of the cylindrical light cylinder close to the eyes; the shell is provided with a transverse moving mechanism and a control mechanism, the transverse moving mechanism is used for changing the state of the test assembly in the shell so as to change the light path length, and the control mechanism is used for realizing intercommunication with the intelligent terminal; the human eyes are located at the tail end of the light path of the body, and the intelligent terminal is embedded at the initial end of the light path of the body.
The slit sheet is used for measuring the pupil distance of eyes and comprises a substrate which is arranged in the shell and has an incident light selection function, and a light transmission hole is formed in a position, corresponding to eyes of a tested person, on the substrate. The substrate can be made of a light-tight material or a semi-transparent material; the substrate is provided with an incident light selection device, and the incident light selection device is an optical filter or a polarized light selection sheet; the light passing holes can be straight slits, small holes or small hole arrays. In the embodiment, the slit sheet is used for mounting an optical filter with selectivity to the optical wavelength on a substrate made of opaque materials so as to eliminate the mutual crosstalk; and two parallel slit structures are arranged on the optical filter, and the distance between the two parallel slit structures corresponds to the pupil diameter of the eye and is 2.5+/-2 mm.
In another embodiment of the present invention, the slit sheet adopts a liquid crystal optical phase modulation device, that is, on a glass substrate that is opaque, there is a regularly arranged array of small holes, as shown in fig. 2, and the array of small holes is filled with a liquid crystal material, and the liquid crystal material generates phase modulation on light passing through the liquid crystal material under the control of an applied electric field, so as to control whether the light can pass through the small hole area. For embodiments employing liquid crystal optical phase modulation devices, no corresponding mechanical actuator is required.
The transverse moving mechanism arranged on the shell is used for changing the left and right positions of the cylindrical light cylinder and the inner crack piece thereof in the shell, so that the change of the light path is realized. The lateral movement mechanism is preferably controlled automatically, but may be manually operated. Under the automatic control mode, the controlled ends of the transverse moving mechanism are respectively connected with the output ends of the control mechanism. However, whether in an automatic control mode or a manual control mode, synchronous change of the cracks in the slit sheet and the icons in the measurement pattern on the intelligent terminal can be realized by adopting modes such as light sensing conduction, electronic conduction or information conduction.
The control mechanism comprises an operation button, a displacement identifier, a signal processing unit and a communication unit, wherein the signal processing unit is respectively connected with the operation button and the displacement identifier, and the signal processing unit is mutually communicated with the intelligent terminal through the communication unit. The measured person controls the transverse moving mechanism to change the position states of the cylindrical light cylinder and the slit sheet in the shell through operating the operating button, when the eyes of the measured person can meet the set requirements in the moving process of the cylindrical light cylinder and the slit sheet, the measured person triggers the signal processing unit of the control mechanism, at the moment, the displacement identifier transmits measured data to the signal processing unit, the measured data are transmitted to the intelligent terminal through the communication unit after being processed by the signal processing unit, and the intelligent terminal calculates corresponding performance parameters; after the eye test of the tested person is completed, the intelligent terminal performs visual display of the measured value.
The intelligent terminal in the invention must have a display screen for displaying the measurement pattern, the shielding pattern, and the measurement result and the intervention information. The screen can be black and white or colored, and a colored screen is selected in the invention; the shielding pattern is a pure black background; the measurement pattern is two red-green bar patterns in a black background. The intelligent terminal can be a smart phone, a cellular phone, a multimedia playing device, an IPAD and other devices.
The intelligent terminal can also load embedded software for realizing man-machine interaction and acquisition of tested person information. The manner of realizing man-machine interaction can adopt a physical connection mechanical structure, a touch screen, a voice input/output part, bluetooth or other wireless peripherals. The information of the tested person comprises self physiological data, behavior habit data and external influence factors. Wherein the physiological data of the human body comprises age, height, weight, distance and near pupil distance, and binocular vision functions such as eye position, distance point adjustment, near point adjustment, adjusting force, color vision, stereoscopic vision and the like; the behavior habit data comprises reading and writing habits, exercise habits, eating habits, work and rest habits, hygiene habits and the like; external influencing factors include daily eye environment states, lighting conditions, various learning life peripheral states, genetic factors and the like.
The intelligent terminal is also provided with a data processing unit, a storage unit and a data receiving and transmitting unit so as to realize the processing, storage and receiving and transmitting of data.
The method for detecting the pupil distance of the eye by adopting the pupil distance measuring device of the eye comprises the following steps of:
1) And placing the intelligent terminal at the initial end of the optical path of the body.
2) The eyes are attached to the tail end of the light path of the body.
3) And adjusting the transverse moving mechanism to enable eyes to clearly see the optotype in the intelligent terminal screen test pattern.
4) The distance and near-pupil distance of the eye are measured separately.
In the measuring process of the far pupil distance, the far pupil distance of the two eyes can be obtained by adding the single-eye far pupil distance measurement of the left eye and the right eye.
Before measuring the far interpupillary distance, one eye of a tested person is shielded, and the single-eye interpupillary distance of the other eye is measured. During measurement, the intelligent terminal displays a measurement pattern corresponding to a screen display of one side of the tested eye and a shielding pattern corresponding to a screen display of the other side of the tested eye through the control mechanism; secondly, the left and right positions of the cylindrical light cylinder and the slit sheet therein in the shell are adjusted through the left and right linear adjustment transverse moving mechanism, and at the moment, the optotype in the measurement pattern synchronously moves along with the slit sheet; when pupils of eyes of a tested person, slit seams on the slit sheets and optotypes in the measuring patterns of the intelligent terminal are in a straight line, namely, the tested eyes can clearly see the optotypes in the measuring patterns, the movement is stopped, meanwhile, a control mechanism is triggered, measured data are transmitted to the intelligent terminal through a communication module, and the intelligent terminal calculates a monocular distance pupil according to the distance between the center of the current slit sheet and the center of the shell.
Then the patterns in the screen of the intelligent terminal are replaced through the control mechanism, and the operation is repeated to conduct the remote pupil distance measurement of the other eye. And finally, adding the single-eye interpupillary distances of the two eyes to obtain the far interpupillary distance of the two eyes of the tested person.
The measurement data refer to the distance of the slit sheet moving left and right in the shell, and the distance between the slit sheet and the central axis of the shell can be calculated according to the distance, namely the single-eye interpupillary distance of the tested eye.
In the invention, the distance of the cylindrical light cylinder and the slit sheet moving left and right in the shell can be acquired by adopting a displacement identifier, the displacement identifier can adopt a slide wire rheostat and the like, and the displacement identifier transmits the measured displacement to a signal processing unit for processing, so as to calculate the single-eye far pupil distance.
Of course, the distance of the cylindrical light cylinder and the slit sheet moving left and right in the shell can be collected by adopting a light sensing conduction mode, and the light sensing conduction mode is realized by the joint cooperation of the control mechanism and the intelligent terminal. The structure is that the intelligent terminal is started to perform light scanning of the grating through the control mechanism, a scanning signal sent by the intelligent terminal can move from one side of the shell to the other side at a constant speed, when the scanning signal moves to a light sensing element corresponding to the center of the slit sheet on the shell, a circuit in the control mechanism is triggered, meanwhile, the control mechanism feeds back a circuit triggering signal to the intelligent terminal, after the intelligent terminal receives the signal, the light scanning is stopped, the distance from a light scanning stopping point to the central axis of the shell is recorded, and the single-eye far-pupil distance is obtained through calculation of the distance.
The optotype pattern in this embodiment adopts two parallel red-green stripes, and the colour difference is great and relatively bright, and is easy to discern to the testee. After measuring the single-eye far pupil distance, the left-eye pupil distance and the right-eye pupil distance can be compared to determine whether the tested person has strabismus state.
When the near-pupil distance is measured, the distance x between the red and green strips in the intelligent terminal measurement pattern and the central optical axis line of the shell can be adjusted according to the frequently used vision distance SD of the eyes of the measured person shown in fig. 3 so as to simulate the near-pupil distance SD and facilitate the measurement of the near-pupil distance, and the relation among the parameters is shown in the following formula.
Wherein: a is the distance between left and right eye cracks, and d is the distance between the screen of the intelligent terminal and the cracks.
For example, with a near pupil distance of 33cm, which is often used by people, the simulated viewing distance between the subject's eyes and the measurement pattern can be adjusted to 33cm by varying the position x of the red-green bar optotype with respect to the central light axis.
During specific adjustment, the position of the cylindrical light cylinder is kept unchanged, the control mechanism moves the sighting target in the pattern to the central axis side of the shell, and the sighting distance between the simulated eyes and the imaging point is a near sighting distance.
Then the left and right positions of the cylindrical light cylinder and the slit sheet in the cylindrical light cylinder are adjusted through the left and right linear adjusting transverse moving mechanism, and at the moment, the optotype in the measuring pattern synchronously moves along with the slit sheet; when pupils of eyes of a tested person, slit seams on the slit sheets and optotypes in the measuring patterns of the intelligent terminal are in a straight line, namely, the tested eyes can clearly see the optotypes in the measuring patterns, the movement is stopped, meanwhile, a control mechanism is triggered, measured data are transmitted to the intelligent terminal through a communication module, and the intelligent terminal calculates a monocular near pupil distance according to the distance between the center of the current slit sheet and the center of the shell; then, changing the pattern in the screen of the intelligent terminal through the control mechanism, and repeating the operation to measure the near pupil distance of the other eye; and finally, adding the single-eye interpupillary distances of the two eyes to obtain the near interpupillary distances of the two eyes of the tested person.
When the invention is used for measuring the interpupillary distance of eyes, a single eye is required to be used for testing, and the other eye can be used for carrying out the test under the shielding pattern, so that the interpupillary distance of the eyes can be objectively measured, and the invention has the advantages of high measurement precision and good operability.
Claims (2)
1. The eye pupil distance measuring method based on the eye pupil distance measuring device is characterized in that the eye pupil distance measuring device comprises a body and an intelligent terminal (5) for graphic display, man-machine interaction and data processing, and the intelligent terminal is in data communication with the body in a wireless or wired mode; the body comprises a shell (1) which is convenient for the head of a tested person, two groups of cylindrical light cylinders used for respectively testing the two eyes are arranged in parallel in the inner cavity of the shell (1), and a slit sheet with a slit is arranged at one end, close to the eyes, in the cylindrical light cylinders; the shell is provided with a transverse moving mechanism for changing the left and right positions of the cylindrical light cylinder in the shell and a control mechanism for realizing mutual communication with the intelligent terminal; the human eyes are positioned at the tail end of the light path of the body, the intelligent terminal is embedded at the beginning end of the light path of the body, the intelligent terminal respectively displays test patterns and shielding patterns on a screen aiming at the tested eyes and the relaxed eyes in a measurement state, wherein the test patterns are two parallel vertical bars with single background and different colors, and the shielding patterns are black background; the slit sheet comprises a substrate which is arranged in the shell and has an incident light selection function, wherein two parallel slit seams or two opposite small holes are vertically formed in the substrate at the position corresponding to eyes of a tested person, and the distance between the two slit seams or small holes is 2.5+/-2 mm; the substrate is made of opaque material and is provided with an optical filter which has selectivity to the wavelength of light;
the eye pupil distance measuring method specifically comprises the following steps:
1) Placing the intelligent terminal at the initial end of the optical path of the body;
2) The eyes are tightly attached to the tail end of the light path of the body;
3) The transverse moving mechanism is adjusted, so that eyes can clearly see the optotype in the intelligent terminal screen test pattern;
4) Measuring the far pupil distance and the near pupil distance of the eyes respectively;
the method for measuring the far interpupillary distance in the step 4) comprises the following steps: the intelligent terminal displays a measurement pattern corresponding to a screen display on one side of the tested eye and a shielding pattern corresponding to a screen display on the other side of the tested eye through the control mechanism; the left and right positions of the cylindrical light cylinder and the slit sheet in the cylindrical light cylinder are adjusted through the left and right linear adjusting transverse moving mechanism, and at the moment, the optotype in the measurement pattern synchronously moves along with the slit sheet; when pupils of eyes of a tested person, slit seams on the slit sheets and optotypes in the measuring patterns of the intelligent terminal are in a straight line, namely, the tested eyes can clearly see the optotypes in the measuring patterns, the movement is stopped, meanwhile, a control mechanism is triggered, measured data are transmitted to the intelligent terminal through a communication module, and the intelligent terminal calculates a monocular distance pupil according to the distance between the center of the current slit sheet and the center of the shell; then, changing the pattern in the screen of the intelligent terminal through the control mechanism, and repeating the operation to measure the distance between the pupils of the other eye; finally, adding the single-eye interpupillary distances of the two eyes to obtain the far interpupillary distance of the eyes of the tested person;
the method for measuring the near interpupillary distance in the step 4) comprises the following steps: the intelligent terminal displays a measurement pattern corresponding to a screen display on one side of the tested eye and a shielding pattern corresponding to a screen display on the other side of the tested eye through the control mechanism; the position of the cylindrical light cylinder is kept unchanged, the intelligent terminal is moved to the central axis side of the shell through the control mechanism to measure the sighting target in the pattern, and the sighting distance between the simulated eyes and the imaging point is a near sighting distance; then the left and right positions of the cylindrical light cylinder and the slit sheet in the cylindrical light cylinder are adjusted through the left and right linear adjusting transverse moving mechanism, and at the moment, the optotype in the measuring pattern synchronously moves along with the slit sheet; when pupils of eyes of a tested person, slit seams on the slit sheets and optotypes in the measuring patterns of the intelligent terminal are in a straight line, namely, the tested eyes can clearly see the optotypes in the measuring patterns, the movement is stopped, meanwhile, a control mechanism is triggered, measured data are transmitted to the intelligent terminal through a communication module, and the intelligent terminal calculates a monocular near pupil distance according to the distance between the center of the current slit sheet and the center of the shell; then, changing the pattern in the screen of the intelligent terminal through the control mechanism, and repeating the operation to measure the near pupil distance of the other eye; and finally, adding the single-eye interpupillary distances of the two eyes to obtain the near interpupillary distance of the eyes of the tested person.
2. The eye pupil distance measuring method based on the eye pupil distance measuring device according to claim 1, wherein: the control mechanism comprises an operation button, a displacement identifier, a signal processing unit and a communication unit, wherein the signal processing unit is respectively connected with the operation button and the displacement identifier, and the signal processing unit is mutually communicated with the intelligent terminal through the communication unit.
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| CN109497925A (en) * | 2018-12-29 | 2019-03-22 | 上海理工大学 | Eye visual function evaluating apparatus and eye Evaluation of visual function |
| CN112716444B (en) * | 2020-12-23 | 2022-12-20 | 温州医科大学附属眼视光医院 | Quick pupil distance measuring device |
| CN113064280A (en) * | 2021-04-08 | 2021-07-02 | 恒玄科技(上海)股份有限公司 | Intelligent display device |
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| CN201790796U (en) * | 2010-09-13 | 2011-04-13 | 王林梨 | Pupillary distance meter |
| CN102961119A (en) * | 2012-11-26 | 2013-03-13 | 黄立贤 | Centrometer |
| CN203987981U (en) * | 2014-07-14 | 2014-12-10 | 金陵科技学院 | A kind of centro meter |
| CN104873168A (en) * | 2015-06-18 | 2015-09-02 | 张仕郎 | Pupil distance measurement device and method |
| CN205514526U (en) * | 2016-01-26 | 2016-08-31 | 镇江市高等专科学校 | High measuring apparatu of pupil |
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