CN210842990U - Portable bracket for acquiring fundus image and imaging system - Google Patents
Portable bracket for acquiring fundus image and imaging system Download PDFInfo
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- CN210842990U CN210842990U CN201920659155.4U CN201920659155U CN210842990U CN 210842990 U CN210842990 U CN 210842990U CN 201920659155 U CN201920659155 U CN 201920659155U CN 210842990 U CN210842990 U CN 210842990U
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Abstract
The utility model provides a portable support and imaging system for acquireing eye ground image, the optics and the lighting system of solving current eye ground camera are comparatively complicated, the volume is comparatively huge, are not suitable for the problem that the operation of flowing used. The portable support comprises a support plate, an optical lens and a telescopic adjusting component; the two ends of one side of the supporting plate are provided with bayonets, and the other side of the supporting plate is connected with the optical lens through a telescopic adjusting assembly; a light through hole for a camera light path of the smart phone to pass through and a lighting hole for a flash lamp light path to pass through are formed in the supporting plate, and the light through hole is aligned with the optical lens; the telescopic adjusting component is used for adjusting the distance between the optical lens and the supporting plate; the imaging system comprises a smart phone and the portable support, and the smart phone is clamped at a clamping opening of the supporting plate.
Description
Technical Field
The utility model relates to a supplementary inspection instrument of medical science, concretely relates to portable support and imaging system for acquireing eye ground image.
Background
The eye is used as a visual organ of the human perception world, an inverted real image of an external scene is formed on a retina through an eye optical system, and the retina is equivalent to a receiver in an optical imaging system and is important for acquiring external information. Therefore, the retina is the only tissue of the whole body that allows observation of blood vessels and their distribution in vivo and under non-invasive conditions, and is now an important window for diagnosis of eye diseases and related systemic diseases. The capillary angiopathy of retina can diagnose diseases such as hypertension, diabetes, thrombus and the like at an early stage, so fundus imaging examination is also a popular object for clinical medicine and modern scientific research.
Currently, fundus optical imaging inspection instruments mainly include: ophthalmoscopes, fundus cameras, laser scanning ophthalmoscopes and optical coherence tomography have characteristics, but the fundus camera has the most wide application in terms of maturity, production cost, practicability and operation difficulty of the current technical development.
The imaging of the fundus camera is fundamentally realized by illuminating the fundus with a good light source to achieve the purpose of optically clear imaging, the design of the light source directly influences the imaging effect of the fundus, and the light intensity needs to be fully considered to ensure that the safety of human eyes is not damaged.
The fundus camera, as an optical instrument for directly imaging the fundus, can not only be used for examining common ophthalmic diseases such as cataract and glaucoma, but also for early diagnosing systemic diseases such as hypertension and diabetes, and has become popular examination equipment for clinical medicine and modern scientific research.
However, the existing fundus camera adopts larger office or diagnosis and treatment room equipment, the optical and lighting systems of the fundus camera are complex, the equipment volume is huge, and in addition, the fundus camera is mostly fixed in use mode and is not suitable for mobile operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a portable support and imaging system for acquireing eye ground image in order to solve the problem that the optics and the lighting system of current eye ground camera are comparatively complicated, bulky, unsuitable mobile operation uses.
The technical scheme of the utility model is that:
a portable support for acquiring images of the fundus of the eye, characterized in that: comprises a supporting plate, an optical lens and a telescopic adjusting component; the two ends of one side of the supporting plate are provided with bayonets, and the other side of the supporting plate is connected with the optical lens through a telescopic adjusting assembly; a light through hole for a camera light path of the smart phone to pass through and a lighting hole for a flash lamp light path to pass through are formed in the supporting plate, and the light through hole is aligned with the optical lens; the telescopic adjusting component is used for adjusting the distance between the optical lens and the supporting plate.
Furthermore, an optical filter is arranged at the position of the lighting hole on the supporting plate.
Furthermore, the optical filter is a gradient optical filter, and the gradient optical filter has gradually changed transmittance or gradually changed spectrum wave band;
the gradual change optical filter is installed in a mode of an optical filter frame or an optical filter wheel and is used for switching optical filters with different transmittances or different wave bands to achieve the acquisition of fundus images or multispectral images.
Furthermore, the telescopic adjusting assembly comprises a guide column, a sliding rod and a locking column with a thread lock; one end of the guide post is fixedly connected with the support plate, the central shaft of the other end of the guide post is provided with a guide hole, one end of the sliding rod is fixedly connected with the optical lens, and the other end of the sliding rod extends into the guide hole and can smoothly and axially move in the guide hole;
the side wall of the guide post is provided with a guide strip hole; the locking post passes behind the direction rectangular hole and with slide bar other end threaded connection, and the locking post can remove in the direction rectangular hole, rotates the locking post and can be fixed with slide bar and guide post locking.
Furthermore, the adjusting range of the telescopic adjusting component is 80-250 mm.
Furthermore, the guide post and the sliding rod are both of thin-wall structures; and reinforcing ribs are arranged at the connecting parts of the guide columns and the supporting plates.
Furthermore, the optical lens comprises a lens frame and optical lenses arranged in the lens frame, and the lower end of the lens frame is connected with the sliding rod; the optical lens is an aspherical lens and is made of ZF 7.
Further, the curvature radius of the central point of the aspherical mirror is 31.54mm and 62mm respectively, the central thickness is 15mm, and the diameter is 45 mm.
Furthermore, the surface of the aspherical mirror is plated with an antireflection film.
And simultaneously, the utility model provides a portable imaging system for obtaining eye ground image, its special character lies in: the device comprises a smart phone and the portable bracket for acquiring the fundus image; the smart phone is clamped at the bayonet of the supporting plate.
Compared with the prior art, the utility model, following technological effect has:
1. the utility model discloses the backup pad is smart mobile phone adapting unit, based on the smart mobile phone appearance, designs into the bayonet socket form, does not need extra fastening part, convenient operation, according to the camera of cell-phone and the overall arrangement of flash light, is equipped with logical unthreaded hole and illumination hole in the backup pad, portable support simple structure, small, convenient to carry, has brought very big facility for the user to shoot, is suitable for using in the mobile operation; the distance between the optical lens and the supporting plate is adjusted by the telescopic adjusting component, so that the telescopic adjusting component can be suitable for clear imaging of the eye ground states of different people.
2. The utility model discloses can be equipped with the gradual change light filter in the illumination hole position department of backup pad, through adjusting the gradual change light filter, the adjustable luminous intensity of projecting on eyes avoids cell-phone flash light luminance too high, shines eyes for a long time, causes the injury to eyes. Moreover, the acquisition of the fundus multispectral image can be realized by replacing the spectrum gradient optical filter with the same interface.
3. The utility model discloses a guide post and slide bar cooperation, locking post are fixed, the regulation distance, and apart from the regulation mode simple to it has the rectangular hole of direction to open on the guide post lateral wall, provides the guide effect, and it is rotatory when preventing apart from adjusting.
4. The utility model discloses a guide post adopts thin wall construction, slide bar to adopt minor diameter entity structure, can reduce the weight of support, is equipped with the strengthening rib on the guide post simultaneously, increases the intensity of support in the lightweight.
5. The utility model discloses optical lens adopts aspherical mirror, reduces optical system's complexity, weakens outside stray light to the influence of eye ground formation of image, and the optical lens material is ZF7, and the low price is with low costs.
6. The utility model discloses a to increase transmissivity, plate antireflection coating on the optical lens surface.
7. The utility model discloses portable imaging system utilizes portable support, combines current smart mobile phone from camera and the flash light of taking, makes ordinary smart mobile phone can shoot the image after the distant place or enlargies, can be applicable to the medical science inspection, uses in the portable suitable mobile operation of convenient operation.
Drawings
FIG. 1 is a schematic structural view of a portable imaging system for obtaining fundus images according to the present invention;
FIG. 2 is a schematic view of a directional structure of the portable imaging system for obtaining fundus images of the present invention;
FIG. 3 is a bottom view of FIG. 2;
fig. 4 is a left side view of fig. 2.
Wherein the reference numbers are as follows:
1-support plate, 11-bayonet, 12-light through hole, 13-optical filter, 2-optical lens, 21-picture frame, 22-optical lens, 3-telescopic adjusting component, 31-guide column, 32-sliding rod, 33-locking column, 34-guide strip hole and 4-smart phone.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in fig. 1 to 4, a portable stand for acquiring fundus images includes a support plate 1, an optical lens 2, and a telescopic adjustment assembly 3; a bayonet 11 is arranged at two ends of one side of the supporting plate 1 and used for mounting the smart phone 4, and the other side of the supporting plate is connected with the optical lens 2 through the telescopic adjusting component 3; a light through hole 12 for passing through a camera light path of the smart phone 4 and an illumination hole for passing through a flash light path are formed in the supporting plate 1, and the light through hole 12 is aligned with the optical lens 2; the telescopic adjustment assembly 3 is used for adjusting the distance between the optical lens 2 and the support plate 1.
Based on the combination of the support and the smart phone 4, the portable imaging system for acquiring the fundus images is provided, the system is based on the portable fundus photographing and photographing functions of the smart phone 4, no external power supply or device is needed, the power supply of the smart phone is used for supplying power, the display screen of the smart phone can display information, real-time display and photographing of the fundus images can be realized, and the storage, processing and information classification of the fundus images can be realized by using the functions of the smart phone, so that the establishment and medical analysis of a later-stage database are facilitated; the eye fundus structure can be directly inspected by directly observing the artery, vein, optic nerve, retina and the like of the eye fundus, so that the eye diseases can be found, and the abnormalities prompting the pathological changes of other parts of the body can be found, wherein the most important thing is the blood vessel change caused by diabetes or hypertension.
The optical system of this embodiment includes smart mobile phone 4 and foretell portable support, the support is mainly by backup pad 1 based on smart mobile phone 4 that has bayonet socket 11, optical imaging optical lens 2 constitutes with the flexible adjusting part 3 of distance adjustment, the both ends of 1 one side of backup pad are bayonet socket 11 designs, match with the cell-phone appearance, can block on the cell-phone steadily, camera and the overall arrangement of light flash lamp according to the cell-phone, be equipped with the illumination hole that logical unthreaded hole 12 that the camera light path of cell-phone passes through and light path pass through in backup pad 1, backup pad 1 blocks with the cell-phone after, the light path through-hole matches with the camera and the light position of cell-phone. The cell-phone card is connected with optical lens 2 through flexible adjusting part 3 in the rear end of backup pad 1, at the front end of backup pad 1.
In order to ensure the adaptability of eyes to flash light of the mobile phone, the light filter 13 is arranged on the support plate 1 and is positioned at the position of the lighting hole, namely, a gradual change light filter wheel is designed at the position of the light source, and two specifications are matched, wherein one specification is that the transmittance is continuously changed, and the other specification is that the wavelength of light is continuously changed, so that the acquisition of the multispectral image of the fundus oculi is realized. The gradual change transmittance filter wheel realizes transmittance gradual change by plating optical film systems with different transmittances, the transmittance of the installed circular attenuation sheet is continuously gradual change along the circumferential direction, the change value is 20% -90%, the intensity of light projected onto eyes is adjusted by rotating the hand wheel, the brightness of the mobile phone flash lamp is prevented from being too high, the eyes are irradiated for a long time, and the eyes are prevented from being injured. The spectrum gradual change filter wheel realizes that light with single wavelength can pass through a certain position intelligently by plating a spectrum film system with continuously gradual change and different wave bands, the spectrum change range is 0.4-0.95 mu m, and the direction of the filter wheel is adjusted by rotating a hand wheel to realize multispectral information of an eyeground image. The rotating center of the filter wheel is 6mm away from the center of the light source, a rotating shaft mounting hole is designed in the support plate 1 of the bayonet 11, the filter wheel is mounted by using the rotating shaft, the filter wheel can be rotated by being stirred by hands on the upper portion of the wheel, and the filter wheel can also be rotated by electric switching.
The distance adjustment mechanism that flexible adjusting part 3 removed for driving optical lens 2, it is 80mm ~ 250mm to realize the distance control range between optical lens 2 and the backup pad 1, under the normal condition, flexible adjusting part 3 includes guide post 31, slide bar 32 and have the locking post 33 of screw thread locking, guide post 31 design diameter is 12mm, inside is the cooperation cylinder hole, the cylinder hole degree of depth is 100mm, can ensure that flexible adjusting part 3 adjusts along the axial distance of light path in inside, can adapt to the clear formation of image of different personnel's eye ground states, distance control range can reach 80 mm. In order to prevent the distance adjustment, the imaging is stable and does not rotate based on the orientation of the mobile phone, a guide strip hole 34 is designed on the side wall of the guide column 31, the straight edge of the guide strip hole is parallel to the axis of the guide column, the width of the guide strip hole 34 is 3mm, the length of the guide strip hole 34 is 80mm, and the requirement of the distance adjustment range is met. In order to reduce the weight of the product, the guide column 3 adopts a thin-wall structure, the average wall thickness is 1.5mm, and the sliding rod 32 adopts a small-size diameter solid structure, the diameter of which is 5 mm. In order to increase the supporting rigidity, a reinforcing rib structure is designed at the stress concentration position on the upper part of the guide column 31, so that the weight is reduced and the strength of parts is increased. Guide post 31 one end links firmly with backup pad 1, and its other end is opened has the guiding hole, and the one end and the optical lens 2 of slide bar 32 link firmly, and in its other end stretched into the guiding hole, the diameter of slide bar 32 can be 8mm, with the cooperation of guide post 31 cavity hole, can be in cavity hole internal plain ground axial displacement. The end part of the sliding rod 32, which extends into the guide post 31, is designed with a locking post 33 with a thread lock, the locking post 33 is moved by the guide post 31 along the guide strip hole 34 on the guide post 31, and after the distance is adjusted to a proper position, the locking post 33 is rotated to lock and fix the sliding rod 32. In this embodiment, one end of the guide post 31 is fixedly connected to the support plate 1 as a component (integrally formed), one end of the sliding rod 32 is fixedly connected to the optical lens 2 as a component, and the lower end of the lens frame 21 is connected to one end of the sliding rod 32 as a component.
In order to reduce the complexity of an optical system, the influence of external stray light on fundus imaging is avoided or weakened as much as possible. The optical lens 2 is designed to be an aspheric structure, which is the medical 35D standard. The optical glass material adopts ZF7 material, so the price is low, the cost is easy to reduce, and the product production is realized. In order to increase the transmittance, the surface of the lens is plated with a plurality of layers of antireflection films, the wavelength range of the film system is 450 nm-800 nm, the average transmittance is more than 98 percent, and the quality of the film layer is determined according to the industry or theThe national military standard specifies implementation. The central point curvature radius of the aspheric lens is 31.54mm and 62mm respectively, the central thickness is 15mm, and the aspheric equation is designed as
The diameter of the lens is 45mm, and the effective aperture is 40 mm.
The above description is only for the preferred embodiment of the present invention, and the technical solution of the present invention is not limited thereto, and any known modifications made by those skilled in the art on the basis of the main technical idea of the present invention belong to the technical scope to be protected by the present invention.
Claims (10)
1. A portable stand for acquiring images of the fundus of the eye, characterized in that: comprises a supporting plate (1), an optical lens (2) and a telescopic adjusting component (3);
bayonets (11) are arranged at two ends of one side of the supporting plate (1), and the other side of the supporting plate is connected with the optical lens (2) through a telescopic adjusting component (3);
a light through hole (12) for a camera light path of the smart phone (4) to pass through and a lighting hole for a flash light path to pass through are formed in the supporting plate (1), and the light through hole (12) is aligned with the optical lens (2);
the telescopic adjusting component (3) is used for adjusting the distance between the optical lens (2) and the supporting plate (1).
2. A portable stand for acquiring fundus images according to claim 1, characterized in that: and an optical filter (13) is arranged at the position of the lighting hole on the support plate (1).
3. A portable stand for acquiring fundus images according to claim 2, wherein:
the optical filter (13) is a gradient optical filter, and the gradient optical filter has gradient transmittance or gradient spectrum wave band;
the gradual change optical filter is installed in a mode of an optical filter frame or an optical filter wheel and is used for switching optical filters with different transmittances or different wave bands to achieve the acquisition of fundus images or multispectral images.
4. A portable stand for acquiring fundus images according to claim 1, 2 or 3, characterized in that:
the telescopic adjusting component (3) comprises a guide post (31), a sliding rod (32) and a locking post (33) with a thread lock;
one end of the guide post (31) is fixedly connected with the support plate (1), the other end of the guide post is provided with a guide hole, one end of the sliding rod (32) is fixedly connected with the optical lens (2), and the other end of the sliding rod extends into the guide hole and can smoothly and axially move in the guide hole;
the side wall of the guide post (31) is provided with a guide strip hole (34);
the locking column (33) penetrates through the guide strip hole (34) and then is in threaded connection with the other end of the sliding rod (32), the locking column (33) can move in the guide strip hole (34), and the sliding rod (32) and the guide column (31) can be locked and fixed by the locking column (33).
5. A portable stand for acquiring fundus images according to claim 4, wherein: the adjusting range of the telescopic adjusting component (3) is 80-250 mm.
6. A portable stand for acquiring fundus images according to claim 5, wherein: the guide post (31) is of a thin-wall structure, and the sliding rod (32) is of a small-diameter solid structure;
and an axial reinforcing rib is arranged at the connecting part of the guide column (31) and the support plate (1).
7. A portable stand for acquiring fundus images according to claim 6, wherein: the optical lens (2) comprises a lens frame (21) and an optical lens (22) arranged in the lens frame (21), wherein the lower end of the lens frame (21) is connected with one end of a sliding rod (32);
the optical lens (22) is an aspherical mirror and is made of ZF 7.
8. A portable stand for acquiring fundus images according to claim 7, wherein: the curvature radius of the central point of the aspherical mirror is 31.54mm and 62mm respectively, the central thickness is 15mm, and the diameter is 45 mm.
9. A portable stand for acquiring fundus images according to claim 8, wherein: and two surfaces of the aspherical mirror are plated with antireflection films.
10. A portable imaging system for acquiring a fundus image, characterized by: comprising a smartphone (4) and a portable support for acquiring fundus images according to any one of claims 1 to 9;
the smart phone (4) is clamped at the bayonet (11) of the support plate (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920659155.4U CN210842990U (en) | 2019-05-09 | 2019-05-09 | Portable bracket for acquiring fundus image and imaging system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920659155.4U CN210842990U (en) | 2019-05-09 | 2019-05-09 | Portable bracket for acquiring fundus image and imaging system |
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| CN210842990U true CN210842990U (en) | 2020-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110151124A (en) * | 2019-05-09 | 2019-08-23 | 中国科学院西安光学精密机械研究所 | It is a kind of for obtaining the portable rack and imaging system of eye fundus image |
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2019
- 2019-05-09 CN CN201920659155.4U patent/CN210842990U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110151124A (en) * | 2019-05-09 | 2019-08-23 | 中国科学院西安光学精密机械研究所 | It is a kind of for obtaining the portable rack and imaging system of eye fundus image |
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