CN220898672U - But working distance's examining mirror - Google Patents
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- CN220898672U CN220898672U CN202321814918.0U CN202321814918U CN220898672U CN 220898672 U CN220898672 U CN 220898672U CN 202321814918 U CN202321814918 U CN 202321814918U CN 220898672 U CN220898672 U CN 220898672U
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- 238000001514 detection method Methods 0.000 claims abstract description 23
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 8
- 230000002207 retinal effect Effects 0.000 claims abstract description 6
- 238000003384 imaging method Methods 0.000 claims description 25
- 238000007689 inspection Methods 0.000 claims description 20
- 238000012937 correction Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 210000001525 retina Anatomy 0.000 claims description 3
- 244000144985 peep Species 0.000 claims description 2
- 230000004899 motility Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 208000008918 voyeurism Diseases 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000004256 retinal image Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Eye Examination Apparatus (AREA)
Abstract
The utility model is suitable for the field of medical appliances, and provides a working distance-measurable shadow mask, wherein a distance detection device is arranged on the shadow mask, and can measure the actual distance between a peephole of the shadow mask and a longitudinal plane where eyes of a checked person are positioned in real time during shadow checking and optometry, and can feed back the actual distance to the checked person in real time, and feed back the actual working distance and the corresponding working distance refraction degree during retinal shadow neutralization. The use of the shadow checking lens for shadow checking and optometry can obviously improve the accuracy of shadow checking results and the efficiency of shadow checking and optometry, and meanwhile, the consistency of the shadow checking results among different inspectors can also be improved, the difficulty of shadow checking operation is reduced, the threshold of entering the shadow checking lens is reduced, and the shadow checking lens has great help for shadow checking beginners and ophthalmic and optometry personnel who have skillfully applied shadow checking.
Description
Technical Field
The utility model belongs to the field of medical instruments, and particularly relates to a working distance-measurable imaging mirror.
Background
In the field of medical devices, imaging optometry is a common clinical examination procedure for assessing eye health and for accurately fitting lenses. During the imaging process, ophthalmic and optometrical professionals use an imaging mirror to directly observe and analyze various characteristics and responses of the subject's eyes. This direct visual inspection can capture more detail and minor changes, helping medical professionals to assess eye health more accurately. As an objective refraction method, a shadow refraction is an indispensable step before subjective refraction, and has higher individuality and accuracy than a computer refraction. Each person's eyes have some unique features and conditions, and therefore require customized inspection and prescription. The optometry provides more accurate data and assessment by directly visually observing the characteristics of the optical bands reflected from the fundus retina to better discover and understand the individual's refractive characteristics and problems. In this way, ophthalmic and optometrical professionals can better prescribe lenses according to the needs and conditions of the individual, thereby providing more accurate, comfortable and appropriate vision correction. However, in practical applications, accurate control of working distance is one of the key factors to ensure the imaging process.
Current design of an inspection scope generally cannot provide feedback of working distance during inspection, and lacks real-time feedback, which may cause difficulty in always maintaining target working distance during inspection by ophthalmology and optoprofessionals, resulting in low optometry efficiency; and too far or too close a working distance may be inaccurate for the final shadow refraction result. Thus, there is a need for an innovative solution to provide the ability to detect and feedback working distances in real time so that a professional can perform the imaging procedure more accurately.
In addition, conventional working distance detection methods often rely on the use of visible light, such as by visual inspection or the use of a measuring scale or the like. However, these methods have some limitations. For example, although the working distance is measured in advance before the inspection operation, it is difficult to ensure that the inspector is always in the initial position during the inspection; or the use of visible light may cause additional accommodation reactions of the subject's eyes, thereby interfering with the imaging process. In addition, the conventional method may have a certain error and uncertainty due to factors such as propagation and refraction of light.
Disclosure of utility model
The utility model aims to provide a working distance-measurable imaging lens, which aims to solve the problems of low optometry efficiency and inaccurate optometry results caused by working distance errors in the process of optometry and optometry.
The utility model is realized in such a way that a working distance measuring scope is provided with a distance detecting device, and the distance detecting device can measure the actual distance between the peephole of the scope and the longitudinal plane of the eyes of the checked person in real time during the imaging and optometry, and can feed back the actual distance to the checked person in real time, and feed back the actual working distance and the corresponding working distance refraction degree during the retinal shadow movement neutralization.
Furthermore, the distance detection device can be used for actively storing the actual working distance reading and the corresponding working distance diopter of the inspector during the neutralization of retinal shadow.
Further, the imaging lens is a dot-shaped imaging lens or a strip-shaped imaging lens.
Further, the imaging lens comprises an imaging lens handle and an imaging lens, and the distance detection device is fixedly arranged between the imaging lens handle and the imaging lens.
Further, the distance detection device comprises a distance measurement sensor positioned on the back surface, and the detection distance of the distance measurement sensor can detect the actual distance between the peep hole of the inspection scope and the longitudinal plane where the eyes of the inspected person are positioned after correction.
Further, the distance measuring sensor measures the distance by the principle of non-visible light reflection, wherein the non-visible light is light outside the wavelength range of visible light of human eyes, and the adjusting function of the human eyes cannot be induced.
Further, the distance detection device further comprises a display screen which is positioned on the front face and is not provided with backlight, and the distance feedback function of the distance detection device feeds back to the inspector through the display value of the display screen.
Compared with the prior art, the utility model has the beneficial effects that:
The utility model adds a distance detecting device capable of measuring distance in real time, which can measure the actual distance between the peeping hole of the detecting mirror and the longitudinal plane of the eyes of the checked person in real time, and feed back the actual distance to the checked person in real time, and feed back the actual working distance and the corresponding working distance degree during the neutralization of retina shadow. The use of the shadow checking lens for shadow checking and optometry can obviously improve the accuracy of shadow checking results and the efficiency of shadow checking and optometry, and meanwhile, the consistency of the shadow checking results among different inspectors can also be improved, the difficulty of shadow checking operation is reduced, the threshold of entering the shadow checking lens is reduced, and the shadow checking lens has great help for shadow checking beginners and ophthalmic and optometry personnel who have skillfully applied shadow checking.
Drawings
FIG. 1 is a schematic front view of a working distance measuring scope according to an embodiment of the present utility model;
FIG. 2 is a schematic rear view of a working distance measuring scope according to an embodiment of the present utility model;
FIG. 3 is a schematic right view of a working distance measuring scope according to an embodiment of the present utility model;
Fig. 4 is a schematic view illustrating a usage state of a working distance-measurable imaging lens according to an embodiment of the present utility model.
The marks in the figure:
1-distance detection device, 11-range sensor, 12-display screen, 2-peep hole, 3-inspection mirror handle, 4-inspection lens, 5-transparent glass backplate, a-eye.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1 to 3, an inspection scope capable of measuring working distance provided in this embodiment is shown, a distance detection device 1 is provided on the inspection scope, the distance detection device 1 can measure the actual distance between the inspection scope peeping hole 2 and the longitudinal plane of the eye a of the inspected person (as shown in fig. 4) in real time during the inspection, and can feed back the actual distance to the inspected person in real time, and feed back the actual working distance and the corresponding refractive index of the working distance during the neutralization of retinal image.
Further, the distance detection device 1 can provide the inspector with active storage of the actual working distance readings during the neutralization of retinal shadow and the corresponding working distance diopter.
The present embodiment is not limited to the type of the scope, and the scope may be a point-like photo scope or a band-like photo scope.
The imaging mirror comprises an imaging mirror handle 3 and an imaging lens 4, and the distance detection device 1 can be arranged at any position of the imaging mirror. In the present embodiment, the distance detecting device 1 is fixedly installed between the scope handle 3 and the scope lens 4.
The distance detection device 1 comprises a distance measurement sensor 11 positioned at the back and a display screen 12 positioned at the front, wherein the detection distance of the distance measurement sensor 11 can detect the actual distance between the peephole 2 of the inspection scope and the longitudinal plane of the eye a of the inspected person after correction. The distance measuring sensor 11 measures the distance by the principle of non-visible light reflection, and the non-visible light is light outside the wavelength range of the human eye visible light which cannot induce the human eye adjusting function, so that the eye adjusting reaction possibly induced by the human eye visible light can be avoided, and then, the additional factors which can generate errors are avoided being introduced.
The distance feedback function of the distance detection device 1 feeds back the inspector by displaying the numerical value on the display 12. The display screen 12 adopts a backlight-free design, so that the brightness of the display screen 12 can be prevented from influencing the adjusting function of eyes of a tested person, and then negative influence on the shadow checking result is avoided. The display 12 is designed to display the actual working distance during the optometry process in real time, and to assist the inspector in more quickly selecting and replacing the appropriate optometry piece. In practical applications, the relevant input device may be configured for the inspector to save the data, or the display 12 may be designed as a touch screen for the inspector to touch for saving.
The emission end of the non-visible light such as infrared light of the ranging sensor 11 faces the subject, and the emission end is positioned in the same longitudinal plane as the transparent glass guard plate 5. The distance displayed on the display screen 12 is the distance after correction. Correction factors include a vertical distance deviation of the ranging sensor 11 from the eye a, and a distance deviation of the ranging sensor 11 from the peephole 2.
The distance measuring device 1 of the present embodiment can detect and save the actual working distance of the retinal shadow reaching the neutralization moment in real time, and automatically convert the corresponding working distance diopter, which can help the inspector not limited to a certain fixed target working distance in the process of inspecting the shadow and optometry, and avoid the deviation of the optometry result caused by unintentional shortening or increasing the working distance in the process of traditional inspecting the shadow and optometry.
The working distance-measurable shadow mask of the embodiment is applied to shadow optometry, so that the accuracy of shadow optometry results and the efficiency of shadow optometry can be obviously improved, meanwhile, the consistency of the shadow optometry results among different inspectors can be improved, the difficulty of shadow optometry operation is reduced, the threshold of entering the shadow mask is reduced, and the shadow mask is greatly helpful for shadow optometry beginners and ophthalmology and optometrists who have skillfully applied shadow optometry.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (7)
1. The utility model provides a but working distance's inspection glass, its characterized in that is provided with distance detection device on the inspection glass, distance detection device can be in the inspection glass peep hole with the inspection glass real time measurement when checking the optometry and the actual distance between the longitudinal plane that is located by inspection person's eyes to can feed back actual distance to the inspection person in real time, actual working distance and corresponding working distance refraction degree when the retina shadow is moved and is neutralized.
2. The video mirror of claim 1 wherein the distance detection means is operable to allow the inspector to actively save the actual working distance reading during neutralization of retinal motility and the corresponding working distance diopter.
3. The imaging mirror of claim 1, wherein the imaging mirror is a spot or strip imaging mirror.
4. The invention of claim 1 wherein said scope includes a scope handle and a scope lens, said distance detection device being fixedly mounted between said scope handle and said scope lens.
5. The scope of claim 1, wherein the distance detection means comprises a distance sensor on the back surface, the distance sensor detecting a distance measured by the distance sensor that, after correction, is capable of detecting an actual distance between the scope aperture and a longitudinal plane in which the subject's eye lies.
6. The motion detector of claim 5, wherein the distance measuring sensor measures distance by a principle of reflection of non-visible light, which is light outside a visible wavelength range of human eyes that cannot induce a human eye adjusting function.
7. The video scope of claim 5 or 6, wherein the distance detection device further comprises a backlit display screen on the front face, and the distance feedback function of the distance detection device feeds back to the inspector by displaying a numerical value on the display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321814918.0U CN220898672U (en) | 2023-07-11 | 2023-07-11 | But working distance's examining mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321814918.0U CN220898672U (en) | 2023-07-11 | 2023-07-11 | But working distance's examining mirror |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220898672U true CN220898672U (en) | 2024-05-07 |
Family
ID=90914479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321814918.0U Active CN220898672U (en) | 2023-07-11 | 2023-07-11 | But working distance's examining mirror |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220898672U (en) |
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2023
- 2023-07-11 CN CN202321814918.0U patent/CN220898672U/en active Active
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