CN212592075U

CN212592075U - Digital vision general survey instrument

Info

Publication number: CN212592075U
Application number: CN202020652704.8U
Authority: CN
Inventors: 韩梦雅; 雷雪怡
Original assignee: Wenzhou Medical University
Current assignee: Wenzhou Medical University
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2021-02-26
Anticipated expiration: 2030-04-26

Abstract

The utility model relates to a digital visual general survey instrument, which comprises an instrument body, wherein the instrument body comprises a display screen, a camera, a charging hole, a module and an analysis system, the front side of the instrument body is provided with a starting button and a display screen, the back side of the instrument body is provided with the camera and a light source hole for emitting light beams, the light source hole is arranged under the camera, and the bottom of the instrument body is provided with the charging hole; the module and the analysis system are arranged inside the instrument body, the module comprises a thin glass sheet, a positive lens, a front slit, a rear slit and a light source, the thin glass sheet, the positive lens, the front slit, the rear slit and the light source are positioned on the same straight line and are sequentially arranged from top to bottom, the thin glass sheet is rotatably arranged at the position of the light source hole, and the light source is arranged in a sliding mode along the direction of the distance between the light source hole and the rear slit. The digital vision general survey instrument provided in the technical scheme can effectively solve the problems that the existing vision general survey equipment is strong in subjectivity and the imported screening instrument is expensive.

Description

Digital vision general survey instrument

Technical Field

The utility model relates to a vision general survey technical field, concretely relates to digital vision general survey appearance.

Background

Existing visual screening can only be performed after the child reaches the age of study, but this misses the best age for treatment. Most of the currently used visual screening devices and methods are subjective and require children to respond accurately, but the children have difficulty in really responding accurately and effectively. The sureight vision screening instrument in the United states has a large volume, can only be used for checking one eye, is expensive and is difficult to popularize at the basic level. However, only when the abnormality of the visual function is found quickly and timely, the children can be sent to a special department for comprehensive eye optometry to find out the cause of the disease. Therefore, it is necessary to design a new technical solution to comprehensively solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a digital vision general survey appearance, it can effectively solve the stronger and import examination appearance problem of expensing of current vision general survey equipment subjectivity.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a digital visual general survey instrument comprises an instrument body, wherein the instrument body comprises a display screen, a camera, a charging hole, a module and an analysis system, a starting button and the display screen are arranged on the front side of the instrument body, the camera and a light source hole for emitting light beams are arranged on the back side of the instrument body, the light source hole is arranged right below the camera, and the charging hole is arranged at the bottom of the instrument body; the module and the analysis system are arranged in the instrument body, the module comprises a thin glass sheet, a positive lens, a front slit, a rear slit and a light source, the thin glass sheet, the positive lens, the front slit, the rear slit and the light source are positioned on the same straight line and are sequentially arranged from top to bottom, the thin glass sheet is rotatably arranged at the position of the light source hole, and the light source is arranged in a sliding manner along the direction of the distance between the light source and the rear slit; the analysis system comprises a photoelectric signal amplification system and a chip structure, wherein the input ends of the photoelectric signal amplification system and the chip structure are connected with the camera, and the output ends of the photoelectric signal amplification system and the chip structure are connected with the display screen.

The technical scheme is that the thin glass sheet is connected with a gear through a rotating shaft, a groove is formed in the back of the instrument body, the gear is rotatably arranged in the groove along the circumferential direction of the gear, and the radial direction of the gear is consistent with the length direction of the groove.

Further, the light source adopts a Korea lighting mode.

Further, the positive lens is a +20D lens.

The technical scheme is that the light source is arranged in the instrument body through the bar-shaped teeth, the tooth patterns are arranged on one side, facing the back face of the instrument body, of the bar-shaped teeth, the adjusting button is arranged on the back face of the instrument body at the position corresponding to the bar-shaped teeth, and the bar-shaped teeth are arranged in an axially movable mode along the bar-shaped teeth through the adjusting button.

Further, the distance between the upper side surface of the positive lens and the thin glass is 15mm, the distance between the lower side surface of the positive lens and the front slit is 44.7mm, and the distance between the lower side surface of the positive lens and the rear slit is 50.8 mm.

According to a further scheme, the width of the front crack is 0.1-0.2 mm, and the length of the front crack is more than 10 mm; the width of the rear slit is 1mm and the length is 8 mm.

The digital visual popularization inspection instrument provided in the technical scheme optimizes and designs the structure based on the principle of the traditional shadow scope, determines each parameter of the product inspection part through theoretical calculation and a series of experimental data, adopts a corresponding analysis system, analyzes the result in a digital mode, and realizes digital objective visual inspection. The utility model discloses a digital vision general survey appearance has following characteristics:

(1) result digitization

The inspection result can be seen from the display screen immediately in the inspection process, or treat the back analysis, the utility model discloses a video recording result of digital vision universal survey appearance is digital, can keep in the person's of being examined case history archives for long-term tracking follow-up visits, is convenient for send professional analysis, perhaps through the objective analysis of computer program, and not by the person's of being examined subjective judgement of oneself.

(2) Simple operation

Equipment such as a comprehensive optometry instrument, a trial frame and a trial lens or a row lens is not required to be arranged in front of eyes of a person to be examined, so that an infant can be easily examined; the feedback of the detected person is not needed, and only little cooperation and short-time attention are needed.

(3) The inspection efficiency is high

Two-eye examination can be performed simultaneously instead of one-eye examination. When the external image moves through the camera, the digital vision popularization inspection instrument can immediately capture and record retina reflex, so that the vision inspection can be completed in a short time, and the digital vision popularization inspection instrument can be easily implemented on children, including infants and even newborns, which have short attention and poor fitting degree.

(4) Wide application range

The utility model discloses a digital vision general survey appearance is small, light in weight, easily carries, can be implemented by non professional (parent, school nurse, kindergarten teacher, family doctor or pediatrician and other technical personnel). Analysis of ocular abnormalities may be done by non-professional persons with short training or learning, may be analyzed immediately or later by a professional team.

(5) High practicability

The utility model discloses a distance of digital vision universal survey appearance can change along with the rotation of thin slide, therefore it can detect all refractive state's scope, and it can collect examinee's binocular information and carry out the comparison, also can detect the refractive problem, squint, opaque refraction medium, ptosis, refraction discrepancy and the unequal disease of pupil that lead to amblyopia to take place, and the range of application is wide.

Drawings

Fig. 1 is a schematic structural view of the digital vision popularization inspection instrument of the present invention;

FIG. 2 is a schematic view of a rotational structure of the thin slide according to the present invention;

fig. 3 is a schematic view of an adjustable structure of the light source of the present invention;

fig. 4 is an appearance schematic diagram of the digital visual popularization inspection instrument of the present invention;

fig. 5 is a circuit diagram of the photoelectric signal amplifying system according to the present invention;

fig. 6 is an analysis flow chart of the digital visual popularization inspection instrument of the present invention;

fig. 7 shows the inspection principle of the digital vision popularization inspection instrument of the present invention.

In the figure: 1. an instrument body; 2. a display screen; 3. a charging hole; 4. a boot button; 5. a module; 51. a thin slide; 52. a positive lens; 53. front cracks; 54. a rear crack; 55. a light source; 6. a bar-shaped tooth; 61. an adjusting knob; 7. a rotating shaft; 71. a gear.

Detailed Description

In order to make the objects and advantages of the present invention more apparent, the present invention will be described in detail with reference to the following embodiments. It is to be understood that the following text is only intended to describe one or several particular embodiments of the invention, and does not strictly limit the scope of the claims specifically claimed.

The technical scheme of the utility model is as shown in fig. 1-7, a digital vision general survey instrument, including instrument body 1, instrument body 1 includes display screen 2, camera, charging hole 3, module 5 and analytic system, the front of instrument body 1 is provided with start button 4 and is used for showing display screen 2 of inspection result, the back of instrument body 1 is provided with camera and the light source hole that is used for sending the light beam, the light source hole sets up and sends the light beam under the camera and is used for the inspection, the camera is used for catching the retina and reflects light, the bottom of instrument body 1 is provided with charging hole 3 that is used for charging; the module 5 and the analysis system are arranged inside the instrument body 1, the module 5 comprises a thin glass slide 51, a positive lens 52 (+ 20D lens), a front slit 53, a rear slit 54 and a light source 55 which are positioned on the same straight line and sequentially arranged from top to bottom, wherein the light source 55 adopts a Korea lighting mode, the brightness of a light beam generated by the Korea lighting mode is uniform, a camera can conveniently capture image information, and the brightness, the width and the moving direction of light can be conveniently judged by the analysis system; the light source 55 is slidably arranged along the direction of the distance from the rear slit 54, so as to change the brightness of the light beam, specifically, as shown in fig. 3, the light source 55 is arranged in the instrument body through the bar-shaped teeth 6, one side of the bar-shaped teeth 6 facing the back of the instrument body 1 is provided with insections, the back of the instrument body at the position corresponding to the bar-shaped teeth 6 is provided with an adjusting button 61, and the bar-shaped teeth 6 are movably arranged along the axial direction of the bar-shaped teeth 61 through the adjusting button 61; the thin slide 51 can be rotatably arranged at the light source hole, and the thin slide can rotate up and down, so that the light beam is controlled to move up and down; the analysis system comprises a photoelectric signal amplification system (a circuit diagram is shown in figure 5) and a chip structure (the model is ISO 100), wherein the input ends of the photoelectric signal amplification system and the chip structure are connected with a camera, the output ends of the photoelectric signal amplification system and the chip structure are connected with a display screen, the retina reflected light captured by the camera is amplified by the amplification system and then transmitted to a photoelectric instrument for analysis, and the photoelectric instrument carries out digital processing on the refraction state of an eye to be detected according to evaluation indexes such as the height, the shape, the moving direction and the like of the retina reflected light and carries out interactive comparison on the detection result and information in an established database so as to generate a corresponding detection result (shown in figure 6).

The examination principle is shown in fig. 7, wherein (1) is recorded that the retina of both eyes of the examinee reflects light in a 'direct motion'; (2) recording the 'retrogradation' of the reflection of the retina of the eyes of the examinee; (3) the recorded reflecting movement directions of the retinas of the eyes of the detected person are opposite; (4) recording the reflective oblique movement of the retinas of the eyes of the detected person; (5) turning the left eye of the recorded examinee; (6) the recorded refractive medium of the left eye of the subject has turbidity.

As shown in fig. 2, the thin slide 51 is connected with a gear 71 through a rotating shaft 7, a groove is arranged on the back surface of the instrument body 1, the gear 71 is rotatably arranged in the groove along the circumferential direction, the radial direction of the gear 71 is consistent with the length direction of the groove, and the angle change of the thin slide is realized by rotating the gear.

The utility model discloses the concrete numerical value of each structure of digital vision general survey appearance as follows: the distance between the upper side surface of the positive lens 52 and the thin slide 51 is 15mm, the distance between the lower side surface of the positive lens 52 and the front slit 53 is 44.7mm, and the distance between the lower side surface of the positive lens 52 and the rear slit 54 is 50.8 mm; the width of the front crack 53 is 0.1-0.2 mm, and the length is more than 10 mm; the rear slit 54 has a slit width of 1mm and a length of 8 mm.

The specific working process is as follows: the light beam is diverged by the virtual image and is projected to both eyes of the examinee through the thin slide by rotating about 90 degrees; the light beam reflected by the thin glass is seemingly emitted by a virtual image of the thin glass, a small target is arranged in the back crack and is positioned outside the main focus of the positive lens, and a real image formed by the positive lens is rotated by 90 degrees by the thin glass and is focused on the forehead of a detected person; during the examination, the real image moves along the middle line of the two eyes of the examinee, so that the light beams are symmetrically incident on the two eyes of the examinee; the analysis system evaluates the refractive state of the eye to be examined from the direction of movement, speed, width and brightness of the retinal return, and detects the presence or absence of amblyopia from the clarity of the retinal return, and the display screen records and outputs the results in a digitized form.

The utility model discloses the principle of digital vision universal survey appearance is similar with conventional inspection mirror principle, and conventional inspection mirror is that professional eye looks at the conventional refractive state that is used for testing the person examined of light personnel, and is comparatively reliable accurate. From the direction of movement, speed, width and brightness of the retinal return, the examiner can assess the refractive status of the examined eye and from the clarity of the retinal return, detect the presence or absence of opacity in the refractive media of the examined eyes, which can lead to deprivation and blocking amblyopia. The utility model discloses a video recording will gather the information the same with conventional inspection optometry, is enough to reach the purpose of vision general survey.

The above detailed description of the embodiments of the present invention has been provided with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and those skilled in the art can make several equivalent transformations and substitutions without departing from the principles of the present invention after learning the contents of the present invention.

Claims

1. The utility model provides a digital vision general survey appearance, includes the instrument body, its characterized in that: the instrument body comprises a display screen, a camera, a charging hole, a module and an analysis system, wherein a starting button and the display screen are arranged on the front side of the instrument body, the camera and a light source hole for emitting light beams are arranged on the back side of the instrument body, the light source hole is arranged right below the camera, and the charging hole is arranged at the bottom of the instrument body; the module and the analysis system are arranged in the instrument body, the module comprises a thin glass sheet, a positive lens, a front slit, a rear slit and a light source, the thin glass sheet, the positive lens, the front slit, the rear slit and the light source are positioned on the same straight line and are sequentially arranged from top to bottom, the thin glass sheet is rotatably arranged at the position of the light source hole, and the light source is arranged in a sliding manner along the direction of the distance between the light source and the rear slit; the analysis system comprises a photoelectric signal amplification system and a chip structure, wherein the input ends of the photoelectric signal amplification system and the chip structure are connected with the camera, and the output ends of the photoelectric signal amplification system and the chip structure are connected with the display screen.

2. The digital visual puzzling instrument according to claim 1, characterized in that: the thin glass is connected with the gear through the rotating shaft, the back of the instrument body is provided with a groove, the gear is rotatably arranged in the groove along the circumferential direction of the gear, and the radial direction of the gear is consistent with the length direction of the groove.

3. The digital visual puzzling instrument according to claim 1, characterized in that: the light source adopts a Kolla lighting mode.

4. The digital visual puzzling instrument according to claim 1, characterized in that: the positive lens is a +20D lens.

5. The digital visual puzzling instrument according to claim 1, characterized in that: the light source passes through the setting of bar tooth in the instrument body, one side that the bar tooth faces the instrument body back is equipped with the insection, is equipped with the adjusting button with the instrument body back of the corresponding position department of bar tooth, the bar tooth passes through the axially movable setting of adjusting button along the bar tooth.

6. The digital visual puzzling instrument according to claim 1, characterized in that: the distance between the upper side surface of the positive lens and the thin glass is 15mm, the distance between the lower side surface of the positive lens and the front slit is 44.7mm, and the distance between the lower side surface of the positive lens and the rear slit is 50.8 mm.

7. The digital visual puzzling instrument according to claim 1, characterized in that: the width of the front crack is 0.1-0.2 mm, and the length of the front crack is more than 10 mm; the width of the rear slit is 1mm and the length is 8 mm.