CN111134615A - Refractive adjustment device of eye ground camera and eye ground camera - Google Patents
Refractive adjustment device of eye ground camera and eye ground camera Download PDFInfo
- Publication number
- CN111134615A CN111134615A CN202010116067.7A CN202010116067A CN111134615A CN 111134615 A CN111134615 A CN 111134615A CN 202010116067 A CN202010116067 A CN 202010116067A CN 111134615 A CN111134615 A CN 111134615A
- Authority
- CN
- China
- Prior art keywords
- driving
- rear cover
- lens cone
- adjusting
- refraction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
-
- 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
-
- 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
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/14—Arrangements specially adapted for eye photography
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
Abstract
The invention provides a refractive adjustment device of a fundus camera and the fundus camera, wherein the adjustment device comprises: a front lens barrel, one end of which is suitable for mounting an eyepiece; one end of the rear lens cone is fixedly connected with the other end of the front lens cone; one end of the refraction adjusting rear cover is movably sleeved with the other end of the rear lens cone, and the other end of the refraction adjusting rear cover is suitable for fixedly mounting a photographing component; the first adjusting device is used for adjusting the front lens cone to axially extend and retract and driving the rear lens cone and the refraction adjusting rear cover to move together; and the second adjusting device is used for adjusting the refraction adjusting rear cover to axially extend and retract relative to the rear lens cone. According to the refractive adjusting device of the fundus camera, the refractive adjusting range is large through the structural design of the first adjusting device and the second adjusting device, and the fundus camera can be adapted to take pictures clearly under various conditions.
Description
Technical Field
The invention relates to the technical field of medical ophthalmic optical instruments, in particular to a refraction adjusting device of an eye fundus camera and the eye fundus camera.
Background
The fundus camera is mainly used for shooting human retina images so as to facilitate medical staff to check fundus diseases or assist the medical staff to judge the state of illness of other organs. The blood vessels of the eyeground are the only blood vessels which can be directly observed by the human body through the body surface, medical personnel can check whether the optic nerve, retina, choroid and refraction medium of the eyeground have pathological changes through an eyeground camera, and can diagnose and judge the disease condition of other system diseases through the assistance of the eyeground camera, for example, screening retinal pictures to detect cerebral infarction, cerebral hemorrhage, cerebral arteriosclerosis, brain tumor, diabetes, nephropathy, hypertension, retinopathy of prematurity, glaucoma, age-related macular degeneration and the like. Since detection of these diseases earlier is more advantageous for clinical treatment, fundus cameras are widely used for clinical screening of fundus diseases, and are indispensable medical instruments.
At present, fundus camera equipment on the market has small refractive adjustment range, some fundus camera equipment needs manual operation, the operation is complex, and the adjustment efficiency is poor.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the technical defect of small refractive adjustment range of the fundus camera in the prior art, and provide a fundus camera refractive adjustment device with a large refractive adjustment range.
To this end, the present invention provides a refraction adjusting apparatus of a fundus camera, comprising:
a front lens barrel, one end of which is suitable for mounting an eyepiece;
one end of the rear lens cone is fixedly connected with the other end of the front lens cone;
one end of the refraction adjusting rear cover is movably sleeved with the other end of the rear lens cone, and the other end of the refraction adjusting rear cover is suitable for fixedly mounting a photographing component;
also comprises
The first adjusting device is used for adjusting the front lens cone to axially extend and retract and driving the rear lens cone and the refraction adjusting rear cover to move together;
and the second adjusting device is used for adjusting the refraction adjusting rear cover to axially extend and retract relative to the rear lens cone.
As a preferable aspect, the first adjusting means includes:
the driving cylinder is sleeved outside the front lens barrel and is provided with a driving spiral through hole and a positioning rotating through hole;
the front lens cone driving column is fixedly arranged outside the front lens cone and extends into the driving spiral through hole;
the lens cone fixing seat is sleeved outside the driving cylinder and is provided with a lens cone guiding through hole and a front lens cone positioning column; the front lens cone driving column extending out of the driving spiral through hole extends into the lens cone guiding through hole; the front lens cone positioning column extends into the positioning rotating through hole;
the first driving structure is used for driving the driving cylinder to rotate so as to drive the front lens barrel to move.
As a preferable aspect, the first driving structure includes:
the first driving motor is fixedly arranged on the lens cone fixing seat;
the coupling is connected with a driving shaft of the first driving motor;
the first belt wheel is connected with the coupling;
the first driving ring is sleeved outside the driving barrel and fixedly connected with the driving barrel;
a first belt sleeved on the first belt wheel and the first driving ring.
As a preferable mode, the first drive ring includes:
an annular body;
the fixing legs are arranged on the inner side face of the annular main body integrally and are used for being in contact and fixed connection with the driving cylinder.
As a preferred scheme, the belt fixing device further comprises a belt limiting part, the cross section of the belt limiting part is U-shaped, the belt limiting part is clamped and fixed between two adjacent fixing pins, after the U-shaped groove accommodates a part of the annular main body, two side walls of the U-shaped groove are higher than a part of the annular main body and used for limiting the first belt.
As a preferable aspect, the second adjusting means includes:
the rear cover driving column is fixedly arranged on the outer wall of the part of the rear lens cone, which extends into the rear cover 3 for refractive adjustment;
the rear cover guide through hole is arranged on the refraction adjustment rear cover and is used for the rear cover driving column to penetrate out;
the driving sleeve is sleeved on the refraction adjustment rear cover, and the inner wall of the driving sleeve is provided with a driving thread which can be matched with the exposed part of the rear cover driving column after penetrating through the rear cover guiding through hole;
the limiting cover is sleeved on the refraction adjusting rear cover, is positioned outside the driving sleeve and is relatively fixed with the refraction adjusting rear cover through a limiting structure;
and the second driving structure is used for driving the driving sleeve to rotate so as to drive the refraction adjustment rear cover to move.
As a preferred scheme, the inner wall of the limiting cover is provided with a limiting hole, and the refractive adjustment back cover opposite to the limiting hole is provided with a limiting column.
As a preferable aspect, the second driving structure includes:
the second driving motor is fixedly arranged on the refraction adjusting rear cover;
a second pulley connected to a driving shaft of the second driving motor;
and the second belt is sleeved on the second belt wheel and the driving sleeve.
Preferably, the rear cover guide through hole extends along the axial direction, and the adjusting length is 5-8 mm.
The invention also provides a fundus camera comprising the refraction adjusting device.
The technical scheme provided by the invention has the following advantages:
1. the invention relates to a refraction adjusting device of an eyeground camera, which comprises a front lens cone, a rear lens cone, a refraction adjusting rear cover, a first adjusting device and a second adjusting device, wherein the first adjusting device is used for adjusting the front lens cone to axially extend and retract and driving the rear lens cone and the refraction adjusting rear cover to act together; according to the refractive adjusting device of the fundus camera, the first adjusting device is used for adjusting the front lens cone to axially stretch and retract and is mainly used for capturing an observed object, and when the observed object is captured, the second adjusting device adjusts the refractive adjusting rear cover to axially stretch and retract so as to adjust an image to be in a clear state; according to the refractive adjusting device of the fundus camera, the refractive adjusting range is large through the structural design of the first adjusting device and the second adjusting device, and the fundus camera can be adapted to take pictures clearly under various conditions.
2. The invention relates to a refraction adjusting device of an eyeground camera, wherein a first adjusting device comprises a driving cylinder, a front lens cone driving column, a lens cone fixing seat and a first driving structure; the design of the positioning rotating through hole and the positioning column of the front lens cone ensures that the driving cylinder can only do radial rotation and can not do axial movement; because one end of the rear lens cone is fixedly connected with the other end of the front lens cone, and the refraction adjusting rear cover is sleeved on the other end of the rear lens cone, when the first adjusting device drives the front lens cone to axially move, the rear lens cone, the refraction adjusting rear cover and the photographing assembly are simultaneously driven to axially move in a telescopic manner.
3. The invention relates to a refraction adjusting device of an eyeground camera.A first driving structure comprises a first driving motor, a coupler, a first belt wheel, a first driving ring and a first belt, wherein the first driving motor drives the first driving ring to rotate through the coupler, the first belt wheel and the first belt so as to drive a driving barrel to rotate.
4. According to the refraction adjusting device of the fundus camera, the first driving ring comprises the annular main body and the plurality of fixing feet, the first driving ring is fixedly connected with the driving barrel in a contact mode through the fixing feet, and the plurality of fixing feet are arranged on the inner side face of the annular main body, so that the problem that the annular main body is heavy due to the fact that the annular main body is too thick is solved.
5. The refractive adjustment device of the fundus camera further comprises a belt limiting piece, wherein the belt limiting piece is clamped and fixed between the two adjacent fixing pins, and after the U-shaped groove accommodates a part of the annular main body, two side walls of the U-shaped groove are higher than the part of the annular main body and are used for limiting the first belt. The belt limiting part is arranged, so that the first belt cannot easily slip off from the annular main body, and is firmer and firmer.
6. The second adjusting device comprises a rear cover driving column, a rear cover guiding through hole, a driving sleeve, a limiting cover and a second driving structure, wherein the second driving structure drives the driving sleeve to rotate, and the rear cover driving column moves in a driving thread of the driving sleeve to push the driving sleeve and the limiting cover so as to drive the rear cover to move for refractive adjustment.
7. According to the refraction adjusting device of the fundus camera, the second driving structure comprises the second driving motor, the second belt wheel and the second belt, and the second driving motor drives the driving sleeve to rotate through the second belt wheel and the second belt so as to drive the refraction adjusting rear cover to move.
8. According to the refraction adjusting device of the fundus camera, the guide through hole of the rear cover extends along the axial direction, the length is 5-8mm, and the requirements of most human eyes on adjustment (from capture to clear adjustment) can be basically met.
9. The invention also provides an eyeground camera, which adopts the refraction adjusting device and has all the advantages of the refraction adjusting device.
Drawings
To more clearly illustrate the technical solutions in the prior art or the embodiments of the present invention, the drawings used in the description of the prior art or the embodiments are briefly introduced below.
FIG. 1 is a schematic view of the overall configuration of a fundus camera refraction adjusting apparatus of the present invention.
Fig. 2 is an exploded view of the driving sleeve, the lens barrel fixing seat and the front lens barrel positioning post in fig. 1.
Fig. 3 is a perspective view of the front barrel positioning post in fig. 2.
Fig. 4 is a schematic structural view of the first drive ring and the first belt of fig. 1.
Fig. 5 is an exploded view of the structure of the rear lens barrel, the refractive adjustment rear cover, the driving sleeve and the limit cover. Reference numerals: 1. a front barrel; 2. a rear barrel; 3. a refractive adjustment posterior cap; 4. a photographing component; 51. a drive cylinder; 52. driving the spiral through hole; 53. positioning the spiral through hole; 54. a front barrel drive post; 55. a lens barrel fixing seat; 56. a lens barrel guide through hole; 57. a front lens barrel positioning column; 61. a first drive motor; 62. a coupling; 63. a first pulley; 64. a first drive ring; 641. an annular body; 642. a fixing leg; 65. a first belt; 66. a belt limiting piece; 71. a rear cover drive post; 72. a rear cover guide through hole; 73. a drive sleeve; 74. a limiting cover; 81. a second drive motor; 82. a second pulley; 83. a second belt.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings.
Example 1
The present embodiment provides a refraction adjusting apparatus of a fundus camera, as shown in fig. 1, including: a front lens barrel 1, one end of which is suitable for being provided with an eyepiece; one end of the rear lens cone 2 is fixedly connected with the other end of the front lens cone 1; one end of the refraction adjusting rear cover 3 is movably sleeved with the other end of the rear lens cone 2, and the other end of the refraction adjusting rear cover 3 is suitable for fixedly mounting a photographing component 4; the adjusting device is used for adjusting the front lens cone 1 to axially extend and retract and driving the rear lens cone 2 and the refraction adjusting rear cover 3 to move together; and the second adjusting device is used for adjusting the refraction adjusting rear cover 3 to axially extend and retract relative to the rear lens cone 2.
In the refractive adjusting device of the fundus camera, a first adjusting device is used for adjusting the front lens cone 1 to axially extend and retract and is mainly used for capturing an observed object, and when the observed object is captured, a second adjusting device is used for adjusting the refractive adjusting rear cover 3 to axially extend and retract so as to adjust an image to be in a clear state; the refractive adjustment device of the fundus camera of the embodiment has the advantages that through the structural design of the first adjustment device and the second adjustment device, the refractive adjustment range is large, and the fundus can be adapted to various conditions to take pictures clearly.
As shown in fig. 1 to 3, the first adjusting means includes: the driving cylinder 51 is sleeved outside the front lens barrel 1 and is provided with a driving spiral through hole 52 and a positioning rotating through hole 53; a front lens barrel driving column 54 fixedly arranged outside the front lens barrel 1 and extending into the driving spiral through hole 52; the lens cone fixing seat 55 is sleeved outside the driving cylinder 51 and is provided with a lens cone guiding through hole 56 and a front lens cone positioning column 57; the front lens cone driving column 54 extending out of the driving spiral through hole 52 extends into the lens cone guiding through hole 56; the front lens cone positioning column 57 extends into the positioning rotating through hole 53; and the first driving structure is used for driving the driving cylinder 51 to rotate so as to drive the front lens barrel 1 to move.
After the first driving structure drives the driving cylinder 51 to rotate, the driving threaded through hole 52 arranged on the driving cylinder 51 pushes the front lens barrel driving column 54, so as to drive the front lens barrel 1 to move; the design of the positioning and rotating through hole 53 and the front lens cone positioning column 54 ensures that the driving cylinder can only do radial rotation and can not do axial movement; because one end of the back lens cone 2 is fixedly connected with the other end of the front lens cone 1, and the refraction adjusting back cover 3 is sleeved on the other end of the back lens cone 2, when the first adjusting device drives the front lens cone 1 to axially move, the back lens cone 2, the refraction adjusting back cover 3 and the photographing component 4 are simultaneously driven to axially move in a telescopic way.
As shown in fig. 1, the first driving structure includes: a first driving motor 61 fixedly disposed on the barrel fixing base 55; a coupling 62 connected to a drive shaft of the first drive motor 61; a first pulley 63 connected to the coupling 62; the first driving ring 64 is sleeved outside the driving cylinder 51 and fixedly connected with the driving cylinder 51; a first belt 65 fitted over the first pulley 63 and the first drive ring 64. The first driving motor 61 drives the first driving ring 64 to rotate through the coupling 62, the first belt wheel 63 and the first belt 65, and further drives the driving cylinder 51 to rotate.
As shown in fig. 4, the first drive ring 64 includes: an annular body 641; the number of the fixing legs 642 is 4, and the fixing legs are integrally arranged on the inner side surface of the annular main body 641 and are used for being in contact with and fixedly connected with the driving cylinder 51. The first driving ring 64 is fixedly connected with the driving cylinder 51 by the fixing feet 642, and the arrangement of 4 fixing feet 642 on the inner side surface of the annular main body 641 reduces the weight of the first driving ring 64 and is lighter.
The belt limiting part 66 is U-shaped in cross section, the belt limiting part 66 is fixed between two adjacent fixing legs 642 in a clamping manner, and after the U-shaped groove accommodates a part of the annular main body 641, two side walls of the U-shaped groove are higher than a part of the annular main body 641 to limit the first belt 65. The belt stopper 66 is disposed such that the first belt 65 cannot easily slip off the ring-shaped body 641, and is more durable and firm.
As shown in fig. 5, the second adjusting means includes: a rear cover driving post 71 fixedly provided on an outer wall of an inner portion of the rear barrel 2 extending into the refraction adjusting rear cover 3; a rear cover guide through hole 72 provided in the refraction adjustment rear cover 3 for the rear cover driving column 71 to pass through; the driving sleeve 73 is sleeved on the refraction adjustment rear cover 3, and the inner wall of the driving sleeve is provided with a driving thread which can be matched with the exposed part of the rear cover driving column 71 after penetrating through the rear cover guiding through hole 72; the limiting cover 74 is sleeved on the refraction adjusting rear cover 3, is positioned outside the driving sleeve 73, and is relatively fixed with the refraction adjusting rear cover 3 through a limiting structure; and the second driving structure is used for driving the driving sleeve 73 to rotate, so as to drive the refraction adjusting rear cover 3 to move.
The second driving structure drives the driving sleeve 73 to rotate, the rear cover driving column 71 moves in the driving thread of the driving sleeve 73, and pushes the driving sleeve 73 and the limiting cover 74 to further drive the refraction adjusting rear cover 3 to move; thereby adjusting the position of the photographing assembly.
The inner wall of the limit cover 74 is provided with a limit hole, and the refractive adjustment rear cover 3 opposite to the limit hole is provided with a limit column.
As shown in fig. 1, the second driving structure includes: a second driving motor 81 fixedly provided on the refraction adjusting rear cover 3; a second pulley 82 connected to a drive shaft of the second drive motor 81; and a second belt 83 sleeved on the second belt wheel 82 and the driving sleeve 73.
The rear cover guide through hole 72 extends along the axial direction, the adjusting length is 5-8mm, and the requirements of most human eyes for adjustment (from catching to clear adjustment) can be basically met
The adjusting process of the fundus camera diopter adjusting device in the embodiment is as follows:
one end of the front lens barrel is aligned with the eye to be shot after being provided with the eyepiece; controlling a first driving motor 61 to start, driving a first driving ring 64 to rotate through a coupler 62, a first belt wheel 63 and a first belt 65, driving a driving barrel 51 to rotate by the first driving ring 64, driving a front lens barrel driving column 54 to be pushed by a driving thread through hole 52 arranged on the driving barrel 51 so as to further push the front lens barrel 1 to move axially, and meanwhile, limiting a front lens positioning column 57 by a positioning rotating through hole 53 to prevent the driving barrel 51 from moving axially; when the eyes to be discharged are found, the first driving motor 61 stops; the second driving motor 81 is started, the driving sleeve 73 is driven to rotate through the second belt wheel 82 and the second belt 83, the rear cover driving column 71 moves in the driving thread of the driving sleeve 73, the driving sleeve 73 is pushed to move, the driving sleeve 73 extrudes the limiting cover 74 or the refractive adjustment rear cover 3, the axial movement of the refractive adjustment rear cover 3 relative to the rear lens barrel 2 is realized, and therefore the captured eye image is adjusted clearly.
Example 2
The present embodiment provides a fundus camera including the refraction adjusting apparatus according to any one of embodiment 1.
The adoption of the refraction adjusting device has all the advantages of the adoption of the refraction adjusting device.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A refractive adjustment apparatus of a fundus camera, comprising:
a front lens barrel (1) with one end suitable for mounting an eyepiece;
one end of the rear lens cone (2) is fixedly connected with the other end of the front lens cone (1);
one end of the refraction adjusting rear cover (3) is movably sleeved with the other end of the rear lens cone (2), and the other end of the refraction adjusting rear cover (3) is suitable for fixedly mounting a photographing component (4);
the method is characterized in that: also comprises
The first adjusting device is used for adjusting the front lens cone (1) to axially extend and retract and driving the rear lens cone (2) and the refraction adjusting rear cover (3) to move together;
and the second adjusting device is used for adjusting the refraction adjusting rear cover (3) to axially extend and retract relative to the rear lens cone (2).
2. A refractive adjustment device of claim 1, wherein: the first adjusting device includes:
the driving cylinder (51) is sleeved outside the front lens barrel (1) and is provided with a driving spiral through hole (52) and a positioning rotating through hole (53);
the front lens cone driving column (54) is fixedly arranged outside the front lens cone (1) and extends into the driving spiral through hole (52);
the lens cone fixing seat (55) is sleeved outside the driving cylinder (51) and is provided with a lens cone guiding through hole (56) and a front lens cone positioning column (57); the front lens cone driving column (54) extending out of the driving spiral through hole (52) extends into the lens cone guiding through hole (56); the front lens cone positioning column (57) extends into the positioning and rotating through hole (53);
the first driving structure is used for driving the driving cylinder (51) to rotate so as to drive the front lens barrel (1) to move.
3. A refractive adjustment device according to claim 2, wherein: the first drive structure includes:
the first driving motor (61) is fixedly arranged on the lens cone fixing seat (55);
a coupling (62) connected to a drive shaft of the first drive motor (61);
a first pulley (63) connected to the coupling (62);
the first driving ring (64) is sleeved outside the driving cylinder (51) and is fixedly connected with the driving cylinder (51);
a first belt (65) fitted over the first pulley (63) and the first drive ring (64).
4. A refractive adjustment device according to claim 3, wherein: the first drive ring (64) includes:
an annular body (641);
a plurality of fixing feet (642) are integrally arranged on the inner side surface of the annular main body (641) and are used for being in contact and fixed connection with the driving cylinder (51).
5. A refractive adjustment device according to claim 4, wherein: the belt limiting piece (66) is U-shaped in cross section, the belt limiting piece (66) is clamped and fixed between the two adjacent fixing feet (642), the U-shaped groove is used for accommodating a part of the annular main body (641), and the two side walls of the U-shaped groove are higher than a part of the annular main body (641) and used for limiting the first belt (65).
6. A refractive adjustment device of claim 1, wherein: the second adjusting device includes:
a rear cover driving column (71) fixedly arranged on the outer wall of the part of the rear lens cone (2) extending into the rear refractive adjustment cover 3;
the rear cover guide through hole (72) is arranged on the refraction adjustment rear cover (3) and is used for allowing the rear cover driving column (71) to penetrate out;
the driving sleeve (73) is sleeved on the refraction adjustment rear cover (3), and the inner wall of the driving sleeve is provided with a driving thread which can be matched with the exposed part of the rear cover driving column (71) after penetrating through the rear cover guiding through hole (72);
the limiting cover (74) is sleeved on the refraction adjusting rear cover (3), is positioned on the outer side of the driving sleeve (73), and is relatively fixed with the refraction adjusting rear cover (3) through a limiting structure;
and the second driving structure is used for driving the driving sleeve (73) to rotate so as to drive the refraction adjustment rear cover (3) to move.
7. The refractive adjustment apparatus of claim 6, wherein: the inner wall of the limiting cover (74) is provided with a limiting hole, and the refractive adjustment rear cover (3) opposite to the limiting hole is provided with a limiting column.
8. The refractive adjustment apparatus of claim 6, wherein: the second driving structure includes:
the second driving motor (81) is fixedly arranged on the refraction adjustment rear cover (3);
a second pulley (82) connected to a drive shaft of the second drive motor (81);
and the second belt (83) is sleeved on the second belt wheel (82) and the driving sleeve (73).
9. The refractive adjustment apparatus of claim 6, wherein: the rear cover guide through hole (72) extends along the axial direction, and the adjusting length is 5-8 mm.
10. An eye fundus camera, characterized in that: comprising a refractive adjustment device as defined in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010116067.7A CN111134615A (en) | 2020-02-25 | 2020-02-25 | Refractive adjustment device of eye ground camera and eye ground camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010116067.7A CN111134615A (en) | 2020-02-25 | 2020-02-25 | Refractive adjustment device of eye ground camera and eye ground camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111134615A true CN111134615A (en) | 2020-05-12 |
Family
ID=70527950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010116067.7A Pending CN111134615A (en) | 2020-02-25 | 2020-02-25 | Refractive adjustment device of eye ground camera and eye ground camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111134615A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112220448A (en) * | 2020-10-14 | 2021-01-15 | 上海鹰瞳医疗科技有限公司 | Fundus camera and fundus image synthesis method |
-
2020
- 2020-02-25 CN CN202010116067.7A patent/CN111134615A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112220448A (en) * | 2020-10-14 | 2021-01-15 | 上海鹰瞳医疗科技有限公司 | Fundus camera and fundus image synthesis method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11553981B2 (en) | Digital-based medical devices | |
| CA2908725C (en) | Multiple-view composite ophthalmic iridocorneal angle imaging system | |
| EP3785602B1 (en) | Multi-spectral fundus imaging system and method using dynamic visual stimulation | |
| Everdell et al. | Multispectral imaging of the ocular fundus using light emitting diode illumination | |
| US20090153796A1 (en) | Multi-functional optometric-ophthalmic system for testing diagnosing, or treating, vision or eyes of a subject, and methodologies thereof | |
| US10039450B2 (en) | Ophthalmologic apparatus | |
| EP2449958A1 (en) | Evaluating metabolism of the eye | |
| US10799113B2 (en) | Probe for iridocorneal angle imaging | |
| JP5170625B2 (en) | Infrared fundus photographing method and apparatus | |
| WO2004112599A1 (en) | Opthalmic camera, opthalmic camera adaptor and methods for determining a haemoglobin and glucose level of a patient | |
| JP2011224377A (en) | Arrangement for attaining high-precision measurement of eye | |
| CN110960188A (en) | Eye fundus camera and vision fixing device thereof | |
| US9131837B2 (en) | Method and apparatus for imaging the choroid | |
| CN111134615A (en) | Refractive adjustment device of eye ground camera and eye ground camera | |
| US9566000B2 (en) | Method for detecting amyloid beta plaques and drusen | |
| US20140307227A1 (en) | Ophthalmic observation apparatus and method of using the same | |
| CN212415704U (en) | Refractive adjustment device of eye ground camera and eye ground camera | |
| US20220257116A1 (en) | Fundus image photography apparatus having automatic focusing function | |
| CN211355396U (en) | Eye fundus camera and vision fixing device thereof | |
| CN113974957B (en) | Lens barrel for fundus massage device and fundus massage device | |
| JP2023024700A (en) | Ophthalmologic apparatus | |
| CN205493774U (en) | Hand -held type fundus camera | |
| CN112472023B (en) | Intelligent automatic eye disease screening robot | |
| Tornow et al. | Binocular video ophthalmoscope for simultaneous recording of sequences of the human retina to compare dynamic parameters | |
| Wakaiki et al. | Indocyanine green angiography for examining the normal ocular fundus in dogs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |