CN114680813A - Portable vision screening instrument with double screens - Google Patents
Portable vision screening instrument with double screens Download PDFInfo
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- CN114680813A CN114680813A CN202011579845.2A CN202011579845A CN114680813A CN 114680813 A CN114680813 A CN 114680813A CN 202011579845 A CN202011579845 A CN 202011579845A CN 114680813 A CN114680813 A CN 114680813A
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- 230000004438 eyesight Effects 0.000 title claims abstract description 60
- 238000012216 screening Methods 0.000 title claims abstract description 51
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 9
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 19
- 229910052744 lithium Inorganic materials 0.000 claims description 19
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 6
- 238000011179 visual inspection Methods 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000004304 visual acuity Effects 0.000 claims 3
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000003993 interaction Effects 0.000 abstract description 3
- 238000004364 calculation method Methods 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 210000001508 eye Anatomy 0.000 description 15
- 238000012360 testing method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010191 image analysis Methods 0.000 description 2
- 230000003340 mental effect Effects 0.000 description 2
- 210000001747 pupil Anatomy 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 208000029257 vision disease Diseases 0.000 description 1
- 230000004393 visual impairment 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
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
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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
- A61B3/0016—Operational features thereof
- A61B3/0041—Operational features thereof characterised by display arrangements
- A61B3/005—Constructional features of the display
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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
- A61B3/0016—Operational features thereof
- A61B3/0041—Operational features thereof characterised by display arrangements
- A61B3/0058—Operational features thereof characterised by display arrangements for multiple images
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Abstract
The portable vision screening instrument with the double screens introduces a man-machine interaction technology, plays an animation picture for an attraction screen watched by a tested person, and attracts the tested person to watch a lens naturally and from the inner center in cooperation with corresponding voice broadcast of a loudspeaker; and the content played by the attraction screen is synchronized to the display screen watched by the measurer, the measurer feeds back the content played by the attraction screen through the measured person, and compares the content played by the display screen, so as to confirm whether the eye of the measured person keeps watching the lens in the detection process. The method comprises the steps of acquiring images by a regular dot matrix distribution infrared lamp one-by-one lighting mode, replacing the scheme that a plurality of infrared lamps are lighted in slices on the market to acquire the images, accurately acquiring the photographing quality of the fundus image of a measured person corresponding to a point light source, and avoiding the situation that the position of a light source is not clear due to the fact that the plurality of infrared lamps are lighted in slices, so that the calculation result is inaccurate; the image processing results corresponding to the adjacent and symmetrical infrared lamp light sources are compared and verified mutually, so that abnormal data are eliminated, and the result is more accurate.
Description
Technical Field
The invention discloses a portable vision screening instrument with double screens, relates to a human eye vision detection device, and particularly relates to a vision screening instrument.
Background
The vision screening instrument has the basic principle that the distance of about one meter is detected through the distance measuring module, an infrared lamp serving as a light source on the vision screening instrument is turned on, and light rays pass through the pupils of two eyes of a tested person at one meter of the vision screening instrument, are reflected back through the eyeground and are acquired and imaged by the camera; and analyzing the pictures of the light source images at a plurality of different positions through an image algorithm, and calculating to obtain vision parameter detection results of refraction, astigmatism and the like of the eyes of the person to be detected.
The vision screening instrument is slightly inferior to a comprehensive optometry instrument in the aspect of detecting vision parameters such as refraction, astigmatism and the like, but is convenient to carry, has a certain distance during detection, does not need to be in contact with a tested person, and can quickly complete the vision screening of the tested person within 5 seconds generally; these advantages make the vision screening instrument widely accepted in the market, and especially provide good support in vision screening of school-age children in kindergarten, primary school, and the like. Because the use of vision screening appearance needs the cooperation of measurand, promptly that the measurand need watch the camera lens of vision screening appearance at the testing process, just can detect out accurate result. The manufacturer of the vision screening instrument also adds sound and twinkling light for attraction when designing the product. During detection, the tested person is informed to watch the flashing light of the lens of the vision screening instrument; in practical application, however, the high-frequency flickering light attracts the measured person to watch, so that the eyeball of the measured person is stimulated to a certain extent, and even a certain degree of visual impairment is caused by long-term watching; in clinical practice, especially for younger children, the eyes of the children generally look at other places or people after seeing the lens, and the eyes of the children cannot keep watching the lens of the vision screening instrument in the detection process, so that the tested result has great deviation. To make matters worse, since the vision screening activities are generally performed in a group line, and the testee is not aware of the vision condition of the testee, the result deviation caused by the fact that the testee does not look at the lens during the testing process is difficult to find at the testing site.
When an eyesight screening instrument on the market takes a picture to obtain an image, an infrared lamp area square matrix consisting of a plurality of infrared lamps is simultaneously lighted on for taking a picture, and the infrared lamp area square matrices are lighted in turn for taking a picture to obtain a corresponding image to be calculated and processed to obtain a result. This has the following problems: when a single image is obtained by taking a picture, the light source is a region rather than a point, which affects the precision of the detection result from the basic principle of the vision screening instrument.
Disclosure of Invention
In order to overcome the defects, the invention introduces a human-computer interaction technology and aims to provide a portable vision screening instrument with double screens, which is innovative in that the portable vision screening instrument can attract a tested person to naturally watch a lens from the inner center and detect whether the vision of the tested person watches the lens or not; acquiring corresponding images in a way that infrared lamps distributed in a certain regular lattice are turned on one by one; eliminating abnormal data and making the detection result more accurate.
A portable vision screening instrument with double screens is characterized by comprising a shell 1, a display screen 2, an attraction screen 3, a detection button 4, a lithium battery 5, a display screen hinge 6, an attraction screen hinge 7, a camera 8, a control processing board card 9, a distance measuring module 10, an attraction lamp group 11, an infrared lamp group 12, a loudspeaker 13 and an optical filter 14; the display screen 2 and the suction screen 3 are respectively positioned at the back and the front upper part of the shell 1 and are respectively connected with the shell 1 through a display screen hinge 6 and a suction screen hinge 7; the detection button 4 is positioned on the right side of the back of the shell 1; the lithium battery 5 is positioned below the rear surface of the shell 1; the camera 8, the control processing board card 9 and the loudspeaker 13 are positioned in the shell 1; the distance measuring module 10, the attraction lamp group 11 and the infrared lamp group 12 are positioned in front of the shell 1; the optical filter 14 is located in front of the housing 1, and covers the infrared lamp set 12, and the hollow-out suction lamp set 14 and the ranging module 10 are exposed.
Grooves matched with the display screen 2 and the suction screen 3 are formed in the back and the front of the shell 1, and the display screen 2 and the suction screen 3 are rotated through a display screen hinge 6 and a suction screen hinge 7 to adjust the inclination angles of the display screen 2 and the suction screen 3; when the inclination angles of the display screen 2 and the attraction screen 3 are adjusted to be 0 degree, the display screen 2 and the attraction screen 3 are completely closed in the shell 1, and the outer surfaces of the display screen 2 and the attraction screen 3 are flush with the outer surface of the shell 1.
The shell 1 is from last down to be the T font, sees the display screen 2 from the back and is located the inclined to left hand side in back of shell 1, and the inclined to right hand side in back of shell 1 is equipped with handheld handle position, grabs when conveniently handheld vision screening appearance carries out detection operation steadily.
Lithium cell 5 is located shell 1 below behind, and shell 1 is equipped with the recess that the lithium cell matches for hold lithium cell 5.
The infrared lamp group 12 consists of 23 infrared lamps in total and is positioned in front of the shell 1, and the infrared lamp group 12 consists of 18 infrared lamps which are horizontally distributed at intervals on the left side and rotate at an interval of 60 degrees along the central line of the camera 8 as an axis to generate 6 groups; in addition, the 18 infrared lamps positioned at the outermost are connected horizontally and vertically to form two sides of a rectangle respectively, and the other 5 infrared lamps are positioned at four corners and the center of the rectangle respectively, as shown in the attached figure 4; when the detection is taken, the 23 infrared lamps sequentially flash and take pictures to obtain images, the images are transmitted to the control processing board card 9 to be subjected to image analysis, and the processing result is transmitted and displayed on the display screen 2.
The attraction lamp group 11 consists of 12 attraction lamps in total and is positioned in front of the shell 1, and the attraction lamp group 11 consists of 3 attraction lamps which are distributed at intervals and adjacent to each other at an included angle of 30 degrees with the horizontal plane and forms 4 groups of 12 attraction lamps through up-down and left-right symmetry; and the center of 12 suction lamps and the above-mentioned rotation with 60 deg. interval produce 6 groups of 18 infrared lamps in the same group of 3 concentric circles with the central line of camera 8 as the axis, as shown in figure 4.
The distance measuring module 10 is located near the upper part of the front of the shell 1 and is surrounded by 6 infrared lamps which are bilaterally symmetrical at an interval of 60 degrees.
The loudspeaker 13 is located inside the shell 1 and behind the ranging module 10, and the shell 1 is provided with dot matrix through holes at the peripheral position of the ranging module.
The utility model provides a portable eyesight sieve appearance of two screens in area which characterized in that contains two kinds of detection mode: the first mode is that the attraction screen 3 is closed, when the eyesight is detected, the attraction lamp set 11 and the loudspeaker 13 are matched with each other, the eyes of the detected person are attracted to watch through the light flashing and voice broadcasting modes, and the image is photographed and obtained for analysis and processing when the distance is proper and the image is clear; the mode is two, attract banks 11 to be in the off-state, visual inspection time, attract screen 3, speaker 13 mutually supports, through video broadcast, voice broadcast's mode attracts the surveyed person's gaze, attract the video synchronization of screen 3 to play at display screen 2, the video content that the measurer combines the play of display screen 2, combine the feedback information of surveyed person, judge that the surveyed person is indeed that the gaze attracts screen 3, press detection button 4 by the measurer, visual screening appearance starts the detection, it obtains the image and carries out analysis processes to shoot when the distance is suitable, the image is clear.
The invention has the advantages and positive effects.
1. Compared with the scheme of light flickering, the scheme has the advantages that the eye stimulation of watching the film by watching with eyes is less, the scheme is more comfortable, and the aim of naturally attracting the eyes of the tested person to watch with eyes can be achieved; especially for the infants and children with very young age and immature mental intelligence, the method can improve the detection success rate, and simultaneously provides convenient and efficient vision screening detection for the crowds suffering from mental disturbance and communication disturbance, including the old.
2. By comparing the display screen which is synchronous with the playing content of the attraction screen and the feedback information of the testee in the detection process, whether the testee really looks at the attraction screen can be judged, so that the detection is determined or carried out after adjustment, and the problem that in the vision screening process, the testee cannot be excluded because the testee does not know the vision condition of the testee and does not look at the lens to detect inaccurate results; and the data suspected to be abnormal is also avoided being excluded by a plurality of measurements, so that the efficiency of population screening and batch screening is improved.
3. The influence of the light on the attention of the tested person when the infrared lamp set takes a picture is reduced through the light filtering and shading effects of the light filter.
4. The corresponding images are obtained in a way that the infrared lamps distributed in a certain regular lattice are lighted one by one, so that the image quality corresponding to the point light source can be accurately obtained, and the image quality reduction caused by the unclear light source position due to the fact that a plurality of infrared lamps are lighted in a piece is avoided; and the image processing results corresponding to the adjacent and symmetrical infrared lamp light sources can be compared and verified mutually, so that abnormal data can be eliminated, and the detection result can be more accurate.
5. The display screen and the suction screen are connected with the shell in a hinge mode, and can be inclined at a certain angle to facilitate watching; can be closed when not in use, is convenient to store and does not occupy space.
Drawings
FIG. 1 is a three-dimensional view of a portable vision screening instrument with dual screens shown from a rear right perspective.
Figure 2 is a three dimensional view of a portable vision screening instrument with dual screens from a front right perspective with cross-sectional display of the internal components.
Fig. 3 is a right view of the portable vision screening instrument with double screens, and an auxiliary line is provided to display the sight watching indication of the person to be tested.
Fig. 4 is a front view of a portable vision screening instrument with double screens, and auxiliary lines showing the positions of infrared lamps and suction lamps.
Description of the parts of the drawings: the device comprises a shell 1, a display screen 2, an attraction screen 3, a detection button 4, a lithium battery 5, a display screen hinge 6, an attraction screen hinge 7, a camera 8, a control processing board card 9, a ranging module 10, an attraction lamp group 11, an infrared lamp group 12, a loudspeaker 13 and an optical filter 14.
Detailed Description
In order to achieve the above objects, the present invention is achieved by the following technical solutions, and the present invention is described in detail below with reference to the accompanying drawings and the detailed description.
The invention introduces a human-computer interaction technology, and aims to provide a portable vision screening instrument with double screens, which is innovative in that the portable vision screening instrument can attract a tested person to watch a lens naturally and centrically and detect whether the vision of the tested person watches the lens or not; acquiring corresponding images in a way that infrared lamps distributed in a certain regular lattice are turned on one by one; eliminating abnormal data and making the detection result more accurate.
A portable vision screening instrument with double screens is characterized by comprising a shell 1, a display screen 2, an attraction screen 3, a detection button 4, a lithium battery 5, a display screen hinge 6, an attraction screen hinge 7, a camera 8, a control processing board card 9, a distance measuring module 10, an attraction lamp group 11, an infrared lamp group 12, a loudspeaker 13 and an optical filter 14; the display screen 2 and the suction screen 3 are respectively positioned at the back and the front upper part of the shell 1 and are respectively connected with the shell 1 through a display screen hinge 6 and a suction screen hinge 7; the detection button 4 is positioned on the right side of the back of the shell 1; the lithium battery 5 is positioned below the rear surface of the shell 1; the camera 8, the control processing board card 9 and the loudspeaker 13 are positioned in the shell 1; the distance measuring module 10, the attraction lamp group 11 and the infrared lamp group 12 are positioned in front of the shell 1; the optical filter 14 is located in front of the housing 1, and covers the infrared lamp set 12, and the hollow-out suction lamp set 14 and the ranging module 10 are exposed. The influence of the light on the attention of the tested person when the infrared lamp set takes a picture is reduced through the light filtering and shading effects of the light filter
Grooves matched with the display screen 2 and the suction screen 3 are formed in the back and the front of the shell 1, and the display screen 2 and the suction screen 3 are rotated through a display screen hinge 6 and a suction screen hinge 7 to adjust the inclination angles of the display screen 2 and the suction screen 3; when the inclination angles of the display screen 2 and the attraction screen 3 are adjusted to be 0 degree, the display screen 2 and the attraction screen 3 are completely closed in the shell 1, and the outer surfaces of the display screen 2 and the attraction screen 3 are flush with the outer surface of the shell 1. The display screen and the attraction screen are connected with the shell in a hinge mode, and can be inclined at a certain angle to facilitate watching; can be closed when not in use, is convenient to store and does not occupy space.
The shell 1 is from last down to be the T font, sees the display screen 2 from the back and is located the inclined to left hand side in back of shell 1, and the inclined to right hand side in back of shell 1 is equipped with handheld handle position, grabs when conveniently handheld vision screening appearance carries out detection operation steadily.
Lithium cell 5 is located shell 1 below behind, and shell 1 is equipped with the recess that the lithium cell matches for hold lithium cell 5. After the lithium battery is charged, the lithium battery is placed into a vision screening instrument, so that the vision screening work can be conveniently carried out when the lithium battery is out.
The infrared lamp group 12 consists of 23 infrared lamps in all and is positioned in front of the shell 1, and the infrared lamp group 12 consists of 18 infrared lamps which are horizontally distributed on the left side at intervals and rotate at 60 degrees along the central line of the camera 8 as an axis to generate 6 groups in all; the 18 infrared lamps positioned on the outermost side are horizontally and vertically connected to form two sides of a rectangle respectively, and the other 5 infrared lamps are positioned at four corners and the center of the rectangle respectively; when the detection is taken, the 23 infrared lamps sequentially flash and take pictures to obtain images, the images are transmitted to the control processing board card 9 to be subjected to image analysis, and the processing result is transmitted and displayed on the display screen 2. The infrared lamps distributed in a dot matrix as shown in figure 4 of the attached drawing comprise infrared lamps which are symmetrical left and right, up and down and are axisymmetric along the axis of the camera, are fully distributed in front of the shell and cover light source points entering all illumination directions of the fundus of a testee; the method has the advantages that the scheme that a plurality of infrared lamps are lightened one by one in the market is replaced to obtain the corresponding photo image, the photographing quality of the fundus image of the measured person corresponding to the point light source is accurately obtained, and the inaccuracy of the calculation result caused by the unclear light source position due to the fact that the plurality of infrared lamps are lightened in one piece is avoided; entering the fundus of the tested person from each light source direction for imaging, and acquiring a picture for describing complete information of the fundus image of the tested person; the image processing results corresponding to the adjacent and symmetrical infrared lamp light sources are compared and verified mutually, and abnormal result data are eliminated, so that the detection result is more accurate.
The attraction lamp group 11 consists of 12 attraction lamps in total and is positioned in front of the shell 1, and the attraction lamp group 11 consists of 3 attraction lamps which are distributed at intervals and adjacent to each other at an included angle of 30 degrees with the horizontal plane and forms 4 groups of 12 attraction lamps through up-down and left-right symmetry; and the center of 12 suction lamps and the above-mentioned every 60 deg. rotation produce 6 groups of 18 infrared lamps in the same group of 3 concentric circles using the central line of camera 8 as axis.
The distance measuring module 10 is located near the upper part of the front of the shell 1 and is surrounded by 6 infrared lamps which are bilaterally symmetrical at an interval of 60 degrees.
Speaker 13 is located inside shell 1, is in ranging module 10 rear, and shell 1 is equipped with dot matrix logical heart aperture in ranging module peripheral position, and the speaker sound conduction of being convenient for is to the eyesight screening appearance outside.
The utility model provides a portable eyesight sieve appearance of two screens in area which characterized in that contains two kinds of detection mode: the first mode is that the attraction screen 3 is closed, when the eyesight is detected, the attraction lamp set 11 and the loudspeaker 13 are matched with each other, the eyes of the detected person are attracted to watch through the modes of light flashing and voice broadcasting, and the detected person can take a picture to obtain an image for analysis and processing when the distance is proper and the image is clear; the mode is two, attract banks 11 to be in the off-state, visual inspection time, attract screen 3, speaker 13 mutually supports, through video broadcast, voice broadcast's mode attracts the surveyed person's gaze, attract the video synchronization of screen 3 to play at display screen 2, the video content that the measurer combines the play of display screen 2, combine the feedback information of surveyed person, judge that the surveyed person is indeed that the gaze attracts screen 3, press detection button 4 by the measurer, visual screening appearance starts the detection, it obtains the image and carries out analysis processes to shoot when the distance is suitable, the image is clear. For younger children, teenagers and adults with relatively large age and perfect intelligence, the lens can be watched after the guidance of a measurer, and the rapid vision detection can be carried out by adopting a first mode; for infants and young children of 0.5-3 years old and very immature in mind, the vision detection is recommended by the mode two. When the mode II is adopted, the content matched with the age, mind and the like of the tested object is selected when the video is played by the attraction screen, and the voice broadcast is matched with the video content; for example, when the 3 year old child performs vision test, the attraction screen plays yellow puppy animation, and is provided with a dog calling voice for broadcasting, when the distance is proper and the image is clear, the tester asks the tested 3 year old child, what animal and what color are on the attraction screen, and the tester presses the detection button again to perform vision test when answering correctly.
As shown in fig. 4, the difference between the above two modes is: in the first mode, the eye of the person to be measured looks at the camera, and the eye watching range covers the rectangle A formed by the diagonal line of the light attracting group. When the mode II is adopted, the eye of the person to be measured watches the attraction screen on the camera, the eye watching range covers a rectangle B formed by diagonal lines of the attraction screen, and the included angle delta alpha is obtained through comparison; in the attached drawings and the specific embodiment, the side lengths of two adjacent sides of the rectangle A and the rectangle B are both close to 50mm, the included angle delta alpha is about 4 degrees, and the influence on the image quality of the eyeground acquired by the vision screening instrument through the pupil at a distance of about one meter can be ignored; the included angle delta alpha is reduced along with the reduction of the height of the suction screen, and the size of the suction screen and the size of the included angle delta alpha can be properly coordinated according to practical application; in the second mode, when the image processing is used for calculating the result, attention needs to be paid to subtracting the included angle delta alpha.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A portable vision screening instrument with double screens is characterized by comprising a shell (1), a display screen (2), an attraction screen (3), a detection button (4), a lithium battery (5), a display screen hinge (6), an attraction screen hinge (7), a camera (8), a control processing board card (9), a distance measuring module (10), an attraction lamp group (11), an infrared lamp group (12), a loudspeaker (13) and an optical filter (14); the display screen (2) and the attraction screen (3) are respectively positioned at the back and the front upper part of the shell (1) and are respectively connected with the shell (1) through a display screen hinge (6) and an attraction screen hinge (7); the detection button (4) is positioned on the right side of the rear surface of the shell (1); the lithium battery (5) is positioned below the rear surface of the shell (1); the camera (8), the control processing board card (9) and the loudspeaker (13) are positioned in the shell (1); the distance measuring module (10), the attraction lamp group (11) and the infrared lamp group (12) are positioned in front of the shell (1); the optical filter (14) is positioned in front of the shell (1) and covers the infrared lamp set (12), and the hollow part is exposed out of the suction lamp set (14) and the ranging module (10).
2. The portable vision screening instrument with double screens of claim 1, wherein grooves matched with the display screen (2) and the attraction screen (3) are arranged above the back and the front of the shell (1), and the display screen (2) and the attraction screen (3) adjust the inclination angles of the display screen (2) and the attraction screen (3) through the rotation angles of the display screen hinge (6) and the attraction screen hinge (7); when the inclination angles of the display screen (2) and the attraction screen (3) are adjusted to be 0 degree, the display screen (2) and the attraction screen (3) are completely closed in the shell (1), and the outer surfaces of the display screen (2) and the attraction screen (3) are flush with the outer surface of the shell (1).
3. The portable visual acuity screening instrument with the double screens as claimed in claim 1, wherein the housing (1) is T-shaped when viewed from above, the display screen (2) is positioned on the left hand side behind the housing (1) when viewed from behind, and the handle position is arranged on the right hand side behind the housing (1).
4. The portable visual acuity screening apparatus with the dual screens as claimed in claim 1, wherein the lithium battery (5) is located below the rear of the housing (1), and the housing (1) is provided with a lithium battery matching recess for receiving the lithium battery (5).
5. The portable vision screening instrument with double screens of claim 1, wherein the infrared lamp set (12) consists of 23 infrared lamps in total and is positioned in front of the shell (1), the infrared lamp set (12) consists of 3 infrared lamps which are horizontally and adjacently distributed at intervals on the left, and the infrared lamps rotate at an interval of 60 degrees along the central line of the camera (8) to generate 18 infrared lamps in total in 6 groups; in addition, the 18 infrared lamps positioned at the outermost are connected horizontally and vertically to form two sides of a rectangle respectively, and the other 5 infrared lamps are positioned at four corners and the center of the rectangle respectively, as shown in the attached figure 4; when the detection is taken, the 23 infrared lamps sequentially flash and take pictures to obtain images, the images are transmitted to the control processing board card (9) to be analyzed, and the processing results are transmitted and displayed on the display screen (2).
6. The portable vision screening instrument with double screens of claim 1, wherein the attraction lamp set (11) consists of 12 attraction lamps in total and is positioned in front of the shell (1), and the attraction lamp set (11) consists of 3 attraction lamps which are distributed adjacently at intervals and form an included angle of 30 degrees with the horizontal plane, and 4 groups of 12 attraction lamps are formed by up-down and left-right symmetry; and the center of 12 suction lamps and the above-mentioned every 60 deg. rotate and produce 6 groups of 18 infrared lamps in the same group of 3 concentric circles using the central line of camera (8) as axis, as shown in figure 4.
7. The portable vision screening instrument with double screens of claim 1, wherein said distance measuring module (10) is located in front of and above the housing (1) and is surrounded by 6 infrared lamps spaced at 60 ° left and right symmetry.
8. The portable visual acuity screening instrument with the double screens as claimed in claim 1, wherein the speaker (13) is located inside the housing (1) behind the ranging module (10), and the housing (1) is provided with dot matrix through holes at the peripheral position of the ranging module.
9. The portable vision screening instrument with double screens of claim 1, comprising two detection modes: the mode is that the attraction screen (3) is closed, when the eyesight is detected, the attraction lamp bank (11) and the loudspeaker (13) are matched with each other, the tested person is attracted to watch by means of light flashing and voice broadcasting, and the tested person shoots to obtain an image for analysis and processing when the distance is proper and the image is clear; the mode is two, attract banks (11) to be in the off-state, visual inspection time measuring, attract screen (3), speaker (13) are mutually supported, through the video broadcast, voice broadcast's mode attracts surveyed person's gaze, attract the video synchronization of screen (3) to play at display screen (2), the video content that the measurer combines display screen (2) to play, combine the feedback information who surveys the person, judge that the person who surveys is gaze and attracts screen (3) really is the gaze, press detection button (4) by the measurer, visual inspection appearance starts the detection, it is suitable to be apart from, it obtains the image and carries out analysis processes to shoot when the image is clear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011579845.2A CN114680813A (en) | 2020-12-29 | 2020-12-29 | Portable vision screening instrument with double screens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011579845.2A CN114680813A (en) | 2020-12-29 | 2020-12-29 | Portable vision screening instrument with double screens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114680813A true CN114680813A (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011579845.2A Pending CN114680813A (en) | 2020-12-29 | 2020-12-29 | Portable vision screening instrument with double screens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116504378A (en) * | 2023-06-26 | 2023-07-28 | 杭州目乐医疗科技股份有限公司 | Control method and system of vision screening instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116504378A (en) * | 2023-06-26 | 2023-07-28 | 杭州目乐医疗科技股份有限公司 | Control method and system of vision screening instrument |
| CN116504378B (en) * | 2023-06-26 | 2023-10-31 | 杭州目乐医疗科技股份有限公司 | Control method and system of vision screening instrument |
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