CN213248985U - Small animal fundus camera - Google Patents
Small animal fundus camera Download PDFInfo
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- CN213248985U CN213248985U CN202021907081.0U CN202021907081U CN213248985U CN 213248985 U CN213248985 U CN 213248985U CN 202021907081 U CN202021907081 U CN 202021907081U CN 213248985 U CN213248985 U CN 213248985U
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- 241001465754 Metazoa Species 0.000 title claims description 35
- 238000005286 illumination Methods 0.000 claims abstract description 64
- 239000000835 fiber Substances 0.000 claims abstract description 40
- 239000013307 optical fiber Substances 0.000 claims abstract description 35
- 238000003384 imaging method Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 12
- 239000005304 optical glass Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229910052724 xenon Inorganic materials 0.000 claims 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 6
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 4
- 210000004087 cornea Anatomy 0.000 description 4
- 210000003128 head Anatomy 0.000 description 4
- 206010019909 Hernia Diseases 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 206010012689 Diabetic retinopathy Diseases 0.000 description 1
- 208000010412 Glaucoma Diseases 0.000 description 1
- 208000006550 Mydriasis Diseases 0.000 description 1
- 208000022873 Ocular disease Diseases 0.000 description 1
- 208000017442 Retinal disease Diseases 0.000 description 1
- 206010038923 Retinopathy Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 208000002780 macular degeneration Diseases 0.000 description 1
- 238000000034 method Methods 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
- 238000012216 screening Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model provides a toy eye ground camera, include: an imaging system and an illumination system. The imaging system comprises a camera, a first lens and a conical lens which are sequentially arranged. The illumination system includes a light source and an illumination fiber. The conical lens comprises a conical mounting frame and a plurality of lenses. The toper mounting bracket is toper tubular structure and both ends are equipped with the opening. A plurality of lenses with different diameters are arranged inside the conical mounting frame. The number of the illumination optical fibers is multiple, and each illumination optical fiber is arranged outside the conical mounting frame. So set up, can not produce the reverberation that enters into in the camera when illuminating the toy eye ground for the formation of image of eye ground in camera department is more clear, has solved among the prior art light easily when penetrating into the eye ground from the cornea center and has produced stronger reverberation and lead to the unclear problem of camera formation of image effectively. And components such as a diaphragm and the like are not arranged, the imaging system and the illumination system are mutually independent, light rays do not need to pass through various lenses, and light quantity loss is effectively reduced.
Description
Technical Field
The utility model relates to an eye ground camera technical field, more specifically say, relate to a toy eye ground camera.
Background
The fundus camera is widely applied in the process of diagnosing various human retinopathy, and is a common medical instrument for screening and diagnosing diseases such as diabetic retinopathy, glaucoma, macular degeneration and the like. However, in some cases, direct observation of human beings has many uncertain factors, so clinical experiments are usually performed on small animals by using a small animal fundus camera to study various causes of ocular diseases. The small animal eye ground camera in the prior art uses the principle of a geometric light path, the imaging and the illumination are integrated, namely illumination light generally needs to enter the eye ground after passing through a diaphragm and a plurality of lenses, so that the imaging is unclear because on one hand the central curvature of the cornea of the small animal is large and strong reflected light can be caused, and on the other hand, the light is reflected or refracted when passing through the diaphragm and a plurality of lenses, so that the light has large energy loss. Therefore, how to solve the problems that the reflected light generated by the small animal camera in the prior art causes unclear fundus imaging and the light has large energy loss is a technical problem which needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a little animal eye ground camera that avoids the reverberation to influence the imaging definition and light energy loss is little.
In order to solve the above problem, the utility model provides a toy eye ground camera, include: an imaging system and an illumination system, wherein the imaging system comprises a camera, a first lens and a conical lens which are arranged in sequence, the illumination system comprises a light source and an illumination optical fiber, the conical lens comprises a conical mounting frame and a plurality of lenses with different diameters, the conical mounting frame is in a conical cylindrical structure, openings are formed in two ends of the conical mounting frame, the diameter of the conical mounting frame is gradually reduced along the direction from the camera to the conical lens, a plurality of lenses with different diameters are arranged in the conical mounting frame in the order from large to small in diameter, the number of the illumination optical fibers is multiple, each illumination optical fiber is arranged outside the conical mounting frame, and the first end of each illuminating optical fiber extends to the opening of the thin end of the conical mounting rack, and the second end of each illuminating optical fiber is connected with the light source, so that the light of the light source is transmitted to the illuminating optical fiber.
Preferably, the first ends of the illumination optical fibers are attached to the outer wall of the conical mounting frame, and the first ends of the illumination optical fibers are arranged along the circumferential direction of the conical mounting frame.
Preferably, the liquid optical fiber is further included, each of the illumination optical fibers is combined with the liquid optical fiber, and the light source is connected with the illumination optical fiber through the liquid optical fiber.
Preferably, the camera further comprises an adjustable base, and the first lens is arranged on the adjustable base and used for adjusting the distance between the first lens and the camera.
Preferably, the camera is a CCD camera.
Preferably, the number of the lenses is three, and the lenses are respectively a second lens, a third lens and a fourth lens, the diameter of the second lens is larger than that of the third lens, and the diameter of the third lens is larger than that of the fourth lens.
Preferably, the diameter of the fourth lens is in the range of 1.2-3 mm.
Preferably, the illumination fiber is an optical glass fiber or a transparent plastic fiber.
Preferably, the light source is an LED lamp.
Preferably, the light source is a hernia lamp.
The utility model provides an among the technical scheme, a toy eye ground camera, include: an imaging system and an illumination system. The imaging system comprises a camera, a first lens and a conical lens which are sequentially arranged. Wherein, the illumination system comprises a light source and an illumination optical fiber. The conical lens comprises a conical mounting frame and a plurality of lenses with different diameters. The toper mounting bracket is toper tubular structure and both ends are equipped with the opening, and in the direction along camera to conical lens, the diameter of toper mounting bracket reduces gradually. A plurality of lenses with different diameters are arranged in the conical mounting frame in the order from large to small. The quantity of illumination optic fibre is a plurality of, and each illumination optic fibre all sets up outside the toper mounting bracket, and the first end of each illumination optic fibre all extends to the thin end opening part of toper mounting bracket, and the second end of each illumination optic fibre is connected with the light source to make the light transmission of light source to illumination optic fibre.
So set up, imaging system and lighting system are independent each other, the light that lighting system's light source produced transmits the thin end to conical lens through illumination optic fibre, when observing the eye ground of toy with conical lens, illumination optic fibre distributes in conical lens's circumference, the great cornea center of curvature has been avoided when light enters into the eye ground of toy, can not produce the reverberation that enters into in the camera when illuminating the eye ground of toy, make the formation of image of eye ground in camera department more clear, the problem that light easily produces stronger reverberation when penetrating into the eye ground from the cornea center among the prior art and leads to the camera not clear of formation of image has been solved effectively. And, the utility model provides a toy eye ground camera does not have parts such as diaphragm, imaging system and lighting system mutual independence, and light also need not to pass through various lens, has reduced the light quantity loss effectively.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a small animal fundus camera in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of the cone lens shown in FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an isometric view of the cone lens of FIG. 2;
fig. 5 is a schematic ray path diagram of the small animal fundus camera in fig. 1 when the small animal fundus camera takes a small animal fundus image.
In fig. 1-5:
1. a CCD camera; 2. a first lens; 3. a conical mounting bracket; 4. an illumination fiber; 5. a liquid optical fiber; 6. an adjustable base; 7. a second lens; 8. a third lens; 9. a fourth lens; 10. a housing; 11. a conversion head; 12. the cornea.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.
Referring to fig. 1-5, an embodiment of the present invention provides a small animal fundus camera, including an imaging system and an illumination system. The imaging system includes a camera, a first lens 2, and a conical lens arranged in order. The illumination system comprises a light source and an illumination fiber 4. The camera may be a CCD camera 1, and the CCD camera 1 belongs to the prior art, and may be referred to as a CCD image sensor, which is a semiconductor device capable of converting an optical image into a digital signal. The conical lens comprises a conical mounting frame 3 and a plurality of lenses with different diameters. The conical mounting frame 3 is integrally of a conical cylindrical structure, and two ends of the conical mounting frame 3 are open. The diameter of the conical mount 3 gradually decreases in the direction from the camera to the conical lens. Several lenses with different diameters are arranged in the conical mounting frame 3 in the order of the diameters from large to small, that is, in the direction from the camera to the conical lens, the several lenses with different diameters are arranged in the order of the diameters from large to small in the conical mounting frame 3. The number of the illumination fibers 4 is plural. Each illumination optical fiber 4 all sets up outside toper mounting bracket 3, and the first end of each illumination optical fiber 4 all extends to the thin end opening part of toper mounting bracket 3, and the second end of each illumination optical fiber 4 is connected with the light source to make the light transmission of light source to illumination optical fiber 4. When the fundus camera for the small animal is used for observing the fundus of the small animal, the thin end of the conical lens is close to the eye of the small animal, at the moment, light of the light source can be transmitted along the illumination optical fiber 4 and emitted out from the first end of the illumination optical fiber 4 to enter the fundus of the small animal, the fundus of the small animal reflects the light, and the light reflected by the fundus of the small animal sequentially passes through the conical lens and the first lens to enter the camera for imaging. As shown in fig. 3, optionally, the small animal fundus camera further includes a tapered housing 10 provided outside the tapered mount 3, and a conversion head 11. The shell 10 and the conversion head 11 are respectively arranged at two ends of the conical mounting frame 3 and are respectively in threaded connection with the conical mounting frame 3. The housing 10 is sleeved outside the conical mounting frame 3, and a gap for the illumination optical fiber 4 to enter is formed between the inner wall of the housing 10 and the outer wall of the conical mounting frame 3. Referring to fig. 2-4, the conversion head 11 and the conical mounting bracket 3 are provided with passages for the illumination fibers 4, respectively, and the first end of each illumination fiber 4 can extend into the gap between the housing 10 and the conical mounting bracket 3 in the direction of the arrow shown in the figure. Referring to fig. 1, optionally, the first ends of the plurality of illumination fibers 4 are attached to the outer wall of the conical mounting frame 3, and the first ends of the plurality of illumination fibers 4 are arranged along the circumference of the conical mounting frame 3, that is, the first ends of all the illumination fibers 4 form an annular aperture around the opening of the thin end of the conical mounting frame 3, so that the illumination effect is better. Alternatively, the illumination fiber 4 may be adhesively attached to the tapered mounting frame 3, or the illumination fiber 4 may be pressed against the surface of the tapered mounting frame 3 by the housing 10.
So set up, imaging system and lighting system are independent each other, light that lighting system's light source produced transmits the thin end to conical lens through illumination optic fibre 4, when observing the eye ground of little animal with conical lens, illumination optic fibre 4 distributes in conical lens's circumference, refer to fig. 5, light has avoided the great cornea 12 center of curvature when entering into little animal eye ground, can not produce the reverberation that enters into the camera when illuminating little animal eye ground, the direction reflection of reverberation to keeping away from the center can not enter into the camera promptly, make the formation of image of eye ground of little animal in camera department more clear, the problem that light easily produces stronger reverberation when incidenting into the eye ground from cornea 12 center among the prior art leads to the camera not clear of formation of image has been solved effectively. And, the utility model provides a toy eye ground camera does not have parts such as diaphragm, imaging system and lighting system mutual independence, and light also need not to pass through various lens, has reduced the light quantity loss effectively.
In some embodiments, the small animal fundus camera further comprises a liquid optical fiber 5, each illumination optical fiber 4 is combined with the liquid optical fiber 5, and the light source is connected with the illumination optical fiber 4 through the liquid optical fiber 5. The liquid optical fiber 5 belongs to a product in the prior art, and the structural principle is not described in detail, and the light source is connected with the illumination optical fiber 4 through the liquid optical fiber 5, so that the light quantity loss can be reduced, and the generated light can be guided into the illumination optical fiber 4.
In some embodiments, the small animal fundus camera further comprises an adjustable mount 6, the first lens 2 being disposed on the adjustable mount 6 to adjust the spacing between the first lens 2 and the camera. So set up, after carrying out the mydriasis to the toy, paste the conical lens with the eyes of toy, adjust the interval between first lens 2 and the camera to can adjust the definition that the toy eye ground is imaged in the camera.
Referring to fig. 3, optionally, the number of lenses is three, namely a second lens 7, a third lens 8 and a fourth lens 9, the diameter of the second lens 7 is larger than that of the third lens 8, and the diameter of the third lens 8 is larger than that of the fourth lens 9. Optionally, the fourth lens 9 has a diameter in the range of 1.2-3 mm.
Optionally, the illumination fiber 4 is an optical glass fiber or a transparent plastic fiber.
Optionally, the light source is an LED lamp or a hernia lamp.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A small animal fundus camera, comprising: imaging system and lighting system, imaging system is including camera, first lens (2) and the conical lens of arranging in order, lighting system includes light source and illumination optic fibre (4), the conical lens includes the different lens of toper mounting bracket (3) and a plurality of diameter, toper mounting bracket (3) are toper tubular structure and both ends are equipped with the opening, along the camera to on the direction of conical lens, the diameter of toper mounting bracket (3) reduces gradually, a plurality of diameter is different the lens are installed inside toper mounting bracket (3) according to the order of diameter from big to little, the quantity of illumination optic fibre (4) is a plurality of, each illumination optic fibre (4) all set up toper mounting bracket (3) are outside, and each the first end of illumination optic fibre (4) all extends to the thin end opening part of toper mounting bracket (3), the second end of each illuminating optical fiber (4) is connected with the light source, so that the light of the light source is transmitted to the illuminating optical fiber (4).
2. The fundus camera according to claim 1, wherein the first ends of the plurality of illumination fibers (4) are attached to the outer wall of the conical mounting frame (3), and the first ends of the plurality of illumination fibers (4) are arranged along the circumference of the conical mounting frame (3).
3. The small animal fundus camera according to claim 1, further comprising a liquid fiber (5), each of said illumination fibers (4) being combined with said liquid fiber (5), said light source being connected to said illumination fibers (4) through said liquid fiber (5).
4. The small animal fundus camera according to claim 1, further comprising an adjustable mount (6), the first lens (2) being disposed on the adjustable mount (6) for adjusting a spacing between the first lens (2) and the camera.
5. The small animal fundus camera according to claim 1, characterized in that the camera is a CCD camera (1).
6. The small animal fundus camera according to claim 1, characterized in that the number of said lenses is three, respectively a second lens (7), a third lens (8) and a fourth lens (9), the diameter of said second lens (7) being greater than the diameter of said third lens (8), the diameter of said third lens (8) being greater than the diameter of said fourth lens (9).
7. The small animal fundus camera according to claim 6, characterized in that the diameter of the fourth lens (9) ranges from 1.2-3 mm.
8. The small animal fundus camera according to claim 1, characterized in that the illumination fiber (4) is an optical glass fiber or a transparent plastic fiber.
9. The small animal fundus camera according to claim 1, wherein said light source is an LED lamp.
10. The small animal fundus camera according to claim 1, wherein said light source is a xenon lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021907081.0U CN213248985U (en) | 2020-09-03 | 2020-09-03 | Small animal fundus camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021907081.0U CN213248985U (en) | 2020-09-03 | 2020-09-03 | Small animal fundus camera |
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| Publication Number | Publication Date |
|---|---|
| CN213248985U true CN213248985U (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021907081.0U Active CN213248985U (en) | 2020-09-03 | 2020-09-03 | Small animal fundus camera |
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| CN (1) | CN213248985U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115308977A (en) * | 2022-08-04 | 2022-11-08 | 中冶赛迪信息技术(重庆)有限公司 | Cyclone type camera sight sweeping barrel |
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2020
- 2020-09-03 CN CN202021907081.0U patent/CN213248985U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115308977A (en) * | 2022-08-04 | 2022-11-08 | 中冶赛迪信息技术(重庆)有限公司 | Cyclone type camera sight sweeping barrel |
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Effective date of registration: 20240109 Address after: British Virgin Islands Patentee after: Opputo Technology Co.,Ltd. Address before: 100089 room w-101, 2nd floor, W District, anningzhuang back street, Haidian District, Beijing Patentee before: Beijing Xinlian Photoelectric Technology Co.,Ltd. |