CN109589087A - A kind of fundus camera optical system - Google Patents
A kind of fundus camera optical system Download PDFInfo
- Publication number
- CN109589087A CN109589087A CN201910063889.0A CN201910063889A CN109589087A CN 109589087 A CN109589087 A CN 109589087A CN 201910063889 A CN201910063889 A CN 201910063889A CN 109589087 A CN109589087 A CN 109589087A
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- China
- Prior art keywords
- fundus camera
- light source
- optical system
- light
- camera optical
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- 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.)
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- 230000003287 optical effect Effects 0.000 title claims abstract description 30
- 238000003384 imaging method Methods 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 claims abstract description 6
- 210000001747 pupil Anatomy 0.000 claims description 10
- 239000013589 supplement Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000005286 illumination Methods 0.000 abstract description 3
- 210000001508 eye Anatomy 0.000 description 16
- 208000006550 Mydriasis Diseases 0.000 description 6
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 210000005252 bulbus oculi Anatomy 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000002577 ophthalmoscopy Methods 0.000 description 2
- 210000001525 retina Anatomy 0.000 description 2
- 206010020772 Hypertension Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 210000004087 cornea Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 206010012601 diabetes mellitus Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 229940023490 ophthalmic product Drugs 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000004256 retinal image Effects 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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
- A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means
-
- 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
- A61B3/15—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing
- A61B3/156—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing for blocking
- A61B3/158—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing for blocking of corneal reflection
Abstract
This application discloses a kind of fundus camera optical systems, including imaging system, lighting system and filming apparatus；Imaging system includes the nethike embrane object lens positioned at same optical axis, relaying microscope group and postposition microscope group；Nethike embrane object lens are for making from the reflected light of human eye into first time picture；Relaying microscope group is used for for the first time as making image rotation effect, and second of picture of formation；Postposition microscope group is used for second as collimating, and forms third time picture；Lighting system includes light source and driver, and light source can issue visible light, and driver can adjust the brightness that light source issues light；Filming apparatus is used for third time as shooting.Thus, it can be achieved that it is cost effective, camera, the focusing program, power supply of intelligent mobile terminal is utilized, or even image transmitting can be carried out using its wireless transport module；Without dedicated illumination system lenses, simplify the structure of entire fundus camera system, improve the efficiency of light energy utilization, the size and weight of entire fundus camera system can be greatly reduced, are convenient for carrying.
Description
Technical field
The present invention relates to fundus cameras more particularly to one kind to exempt from mydriasis shooting human eye eye fundus image, the simple eyeground of structure
Camera optical system.
Background technique
Fundus camera is a kind of instrument of ingestible retinal images.As one step of key of diagnosis and treatment, funduscopy is in eye
Occupy extremely important status in section, meaning is not only limited to the diagnosis to ophthalmology disease again.Since eyeground is rich in various dynamic
Vein blood vessel, funduscopy have become the important evidence for monitoring a variety of systemic diseases.In conventional diagnostic mode, doctors
By naked eyes and subjective judgement, it is difficult to make eyeground pathological changes accurate objectively analysis.Therefore, advanced optics is introduced in clinic
Instrument and computer aided system are increasingly becoming new industry development trend.Compared with developed countries, eye-ground photography technology is in
State is still at an early stage, and the prone country as health diseases such as myopia, diabetes, hypertension, Chinese medical system pair
The demand of high level ophthalmic product will continue vigorous.
Application No. is the patent of " 201610545834.X " " fundus camera and its optical systems ", have invented a kind of portable
Fundus camera, but independent imaging sensor and display screen are contained in its system, structure complexity increase, thus its reduce at
This space is limited.
Application No. is the patent of " 201810052799.7 ", " a kind of portable based on mobile phone dual camera exempts from mydriasis eyeground
Camera ", invented a kind of optical system, the optical system in conjunction with mobile phone after can possess the function of fundus camera.But it is wanted
The specific Dual-camera handset asked, suitability are bad；And illumination module is complicated.
Application No. is the patent of " 201810209132.3 " " it is a kind of be used in combination with intelligent mobile terminal exempt from mydriasis eyeground
Camera ", invented it is a kind of be used in combination with intelligent mobile terminal exempt from mydriasis fundus camera, but it needs that photoconverter is added,
Make increased costs.And light structures are complicated.
The above-mentioned fundus camera that can be used in combination with intelligent mobile terminal, does not have before meeting medicine testing requirements
Put reduces cost as far as possible, and eyeground detecting instrument is made to enter family.
Summary of the invention
In view of the deficiency of current fundus camera, the present invention provides one kind, and to exempt from mydriasis shooting human eye eye fundus image, structure simple
Fundus camera optical system, the fundus camera be able to carry out exempts from mydriasis shooting human eye eye fundus image, solve fundus camera structure
Complicated problem.
According to an aspect of the present invention, a kind of fundus camera optical system is provided, including imaging system, lighting system and
Filming apparatus；
Imaging system includes the nethike embrane object lens positioned at same optical axis, relaying microscope group and postposition microscope group；
Nethike embrane object lens are for making from the reflected light of human eye into first time picture；
Relaying microscope group is used for for the first time as making image rotation effect, and second of picture of formation；
Postposition microscope group is used for second as collimating, and forms third time picture；
Lighting system includes light source and driver, and light source can issue visible light, and driver can adjust light source and issue light
Brightness；
Filming apparatus is used for third time as shooting.
In some embodiments: nethike embrane object lens are made of single element lens, which is spherical lens or aspherical
Lens.
In some embodiments: postposition microscope group is collimation lens.
In some embodiments: light source and pupil are conjugated about nethike embrane object lens.
In some embodiments: filming apparatus and pupil are conjugated about imaging system.
In some embodiments: light source deviates optical axis setting.
In some embodiments: the first polarizing film is equipped between light source and nethike embrane object lens, at the diaphragm face of imaging system
Equipped with the second polarizing film, the long axis direction of the first polarizing film and the second polarizing film is orthogonal.
In some embodiments: filming apparatus is intelligent mobile terminal.
In some embodiments: driver includes that single-chip microcontroller, bluetooth are taken pictures control module, LED light supplement lamp constant current driving
Circuit, single-chip microcontroller and bluetooth control module of taking pictures are electrically connected, and single-chip microcontroller is electrically connected by LED light supplement lamp constant-current drive circuit with light source
It connects, bluetooth control module of taking pictures is connect with filming apparatus signal.
Technical effect of the invention are as follows:
The first, can be achieved it is cost effective, be utilized intelligent mobile terminal camera, focusing program, power supply, or even can benefit
Image transmitting is carried out with its wireless transport module.
The second, without dedicated illumination system lenses, simplify the structure of entire fundus camera system, improve the efficiency of light energy utilization.
The second, due to simplifying structure, the size and weight of entire fundus camera system can be greatly reduced, conveniently be taken
Band.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of fundus camera optical system of the present invention；
Fig. 2 is a kind of driver signal input and output figure of fundus camera optical system of the present invention；
Fig. 3 is a kind of drive circuit figure of fundus camera optical system of the present invention；
Fig. 4 is a kind of LED light supplement lamp constant-current drive circuit figure of fundus camera optical system of the present invention.
Specific embodiment
Illustrate with reference to the accompanying drawing, invention is further described in detail.
As shown in Figure 1, a kind of fundus camera optical system, including imaging system 90, lighting system and filming apparatus 60；
Imaging system 90 includes the nethike embrane object lens 20 positioned at same optical axis 80, relaying microscope group 40 and postposition microscope group 50；
Nethike embrane object lens 20 are for making from the reflected light of human eye into first time as 30；
Relaying microscope group 40 is used for first time as 30 make image rotation effect, and second of picture 32 of formation；
Postposition microscope group 50 is used for second as 32 collimate, and forms third time picture；
Lighting system includes light source 73 and driver, and light source 73 deviates optical axis 80 and is arranged, and light source 73 can be LED light, disappear
Except eye cornea backlight, light source 73 can issue visible light, can adjust for white light or the light of narrow wavelength, driver
The brightness of the sending light of light source 73；Light source 73 is located at the conjugation with pupil of human 13 about nethike embrane object lens.
Filming apparatus 60 is used for third time as shooting.Filming apparatus 60 and pupil 13 are total about imaging system 90
Yoke.Filming apparatus 60 is intelligent mobile terminal, is in the present embodiment smart phone, has rear camera 61 and display screen
62。
Wherein, nethike embrane object lens 20 are made of single element lens, can be spherical lens, and non-spherical lens is then more preferably；Nethike embrane object
The effect of mirror is to make from the reflected light of human eye into first time picture, moreover serve as the dioptric element of lighting system.
Postposition microscope group 50 is collimation lens, and its role is to, as collimating, make to enter intelligent mobile terminal to second
The light of rear camera be in less parallel light, and make one eye pupil borescopic imaging in the entrance pupil of the rear camera of intelligent mobile terminal
At or near place.
More optimized mode is that the first polarizing film 72,90 light of imaging system are equipped between light source 73 and nethike embrane object lens 20
The second polarizing film 71 is nearby added in late face 31 or diaphragm face 31；First polarizing film 72 block range be include that light source 73 is direct
The light of sending, but do not stop the light into imaging system aperture diaphragm；The range of blocking of second polarizing film 71 is imaging system hole
Diameter diaphragm；First polarizing film 72 is orthogonal with the long axis direction of the second polarizing film 71.Eliminate nethike embrane object lens reflect to be formed it is miscellaneous
Astigmatism.
As shown in Fig. 2, driver includes that single-chip microcontroller, bluetooth are taken pictures control module, LED light supplement lamp constant-current drive circuit, it is single
Piece machine and bluetooth control module of taking pictures are electrically connected, and single-chip microcontroller is electrically connected by LED light supplement lamp constant-current drive circuit with light source, bluetooth
Control module of taking pictures is connect with 60 signal of filming apparatus, and bluetooth takes pictures control module with shoot button.
As shown in figure 3, using 32 monolithics of Cortex-M3 core as main control chip, taken pictures control by O mouthfuls of I and bluetooth
Module connection, real-time detection shoot button simultaneously open pwm signal driving LED light filling function in time.
As shown in figure 4, the circuit is LED light supplement lamp constant-current drive circuit, constant current output chip TPS62130 highest can be defeated
300mA driving current out, pwm control signal can control LED light brightness by the adjustable output size of current of DEF pin.
Light source 73 issues light and reaches successively after polarizing film 72, nethike embrane object lens 20, the pupil 13 of human eye 10, eyeball 12
Human eye retina 11；In human eye retina 11 diffusing reflection occurs for light, and the light after reflection successively passes through eyeball 12, pupil 13, nethike embrane
After object lens 20, at first time as 30；After light enters back into the polarizing film 71 in imaging system diaphragm face 31, into relaying microscope group
40, at second as 32；Light enters after postposition microscope group 50 again in the rear camera 61 of intelligent mobile terminal, finally eyeground
Image is shown on display screen 62.
Open intelligent mobile terminal shooting software, driver by LED light supplement lamp constant-current drive circuit control light source with
Lower brightness holding is always on, and brightness can be observed and shown on intelligent mobile terminal display screen for a long time with detected person
Eyeground picture can be seen clearly substantially to be advisable, and the light for enabling detected person notice that observing eye bottom camera internal light source issues passes through adjusting
Human eye to nethike embrane object lens distance and human eye angle, to see that whole light spot image is advisable, at this time tester touch display screen with
It allows rear camera to focus, after focusing, is taken pictures the shooting button of control module by pressing bluetooth, camera starts
Exposure is carried out, while driver rapidly promotes the brightness of light source, finally obtains clearly eyeground picture, finally saves eyeground figure
Light-source brightness is dropped back to lower luminance state by picture, driver.
The above is only one embodiment of the present invention, it is noted that those skilled in the art,
Without departing from the concept of the premise of the invention, some similar deformation and improvement can be made, these also should be regarded as this
Within the protection scope of invention.
Claims (9)
1. a kind of fundus camera optical system, it is characterised in that: including imaging system (90), lighting system and filming apparatus
(60)；
The imaging system (90) includes the nethike embrane object lens (20), relaying microscope group (40) and postposition microscope group positioned at same optical axis
(50)；
The nethike embrane object lens (20) are for making from the reflected light of human eye at for the first time as (30)；
The relaying microscope group (40) is used to make image rotation effect to picture (30) for the first time, and forms second as (32)；
The postposition microscope group (50) is used to collimate second of picture (32), and forms third time picture；
The lighting system includes light source (73) and driver, and the light source (73) can issue visible light, the driver energy
Enough adjust the brightness that the light source (73) issue light；
The filming apparatus (60) is used for third time as shooting.
2. a kind of fundus camera optical system according to claim 1, it is characterised in that: the nethike embrane object lens (20) are by list
Piece lens composition, the single element lens are spherical lens or non-spherical lens.
3. a kind of fundus camera optical system according to claim 1, it is characterised in that: subject to the postposition microscope group (50)
Straight lens.
4. a kind of fundus camera optical system according to claim 1, it is characterised in that: the light source (73) and pupil
(13) it is conjugated about nethike embrane object lens (20).
5. a kind of fundus camera optical system according to claim 1, it is characterised in that: filming apparatus (60) and pupil
(13) it is conjugated about the imaging system (90).
6. a kind of fundus camera optical system according to claim 4, it is characterised in that: the light source (73) deviates optical axis
Setting.
7. a kind of fundus camera optical system according to claim 1, it is characterised in that: the light source (73) and the net
The first polarizing film (72) are equipped between film object lens (20), the second polarizing film is equipped at the diaphragm face (31) of the imaging system (90)
(71), the long axis direction of first polarizing film (72) and the second polarizing film (71) is orthogonal.
8. a kind of fundus camera optical system according to claim 1, it is characterised in that: the filming apparatus (60) is intelligence
It can mobile terminal.
9. a kind of fundus camera optical system according to claim 1, it is characterised in that: the driver includes monolithic
Machine, bluetooth are taken pictures control module, LED light supplement lamp constant-current drive circuit, and the single-chip microcontroller and the bluetooth are taken pictures control module electricity
Connection, the single-chip microcontroller is electrically connected by the LED light supplement lamp constant-current drive circuit with light source (73), and the bluetooth is taken pictures control
Module is connect with filming apparatus (60) signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063889.0A CN109589087A (en) | 2019-01-23 | 2019-01-23 | A kind of fundus camera optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063889.0A CN109589087A (en) | 2019-01-23 | 2019-01-23 | A kind of fundus camera optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109589087A true CN109589087A (en) | 2019-04-09 |
Family
ID=65964710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910063889.0A Pending CN109589087A (en) | 2019-01-23 | 2019-01-23 | A kind of fundus camera optical system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141187A (en) * | 2019-04-17 | 2019-08-20 | 南京览视医疗科技有限公司 | One kind is portable to exempt from mydriasis fundus camera |
| CN112932406A (en) * | 2021-01-26 | 2021-06-11 | 宁波明星科技发展有限公司 | Fundus camera optical system |
| CN114587268A (en) * | 2022-04-06 | 2022-06-07 | 上海观爱医疗科技有限公司 | Full-automatic optometry topographic map instrument and optometry method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068932A (en) * | 1975-05-23 | 1978-01-17 | Canon Kabushiki Kaisha | Optical instrument for examining the eye fundus |
| JP2000116602A (en) * | 1998-10-09 | 2000-04-25 | Canon Inc | Retinal camera |
| US20020126257A1 (en) * | 2000-07-28 | 2002-09-12 | Katsuhiko Kobayashi | Ocular optical characteristic measuring apparatus |
| CN108175375A (en) * | 2017-12-28 | 2018-06-19 | 中国科学院西安光学精密机械研究所 | A kind of portable eyeground imaging system and its imaging method |
| CN108814545A (en) * | 2018-03-14 | 2018-11-16 | 北京理工大学 | It is a kind of be used in combination with smart phone exempt from mydriasis fundus camera |
| CN210019286U (en) * | 2019-01-23 | 2020-02-07 | 启东晟涵医疗科技有限公司 | Fundus camera optical system |
-
2019
- 2019-01-23 CN CN201910063889.0A patent/CN109589087A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068932A (en) * | 1975-05-23 | 1978-01-17 | Canon Kabushiki Kaisha | Optical instrument for examining the eye fundus |
| JP2000116602A (en) * | 1998-10-09 | 2000-04-25 | Canon Inc | Retinal camera |
| US20020126257A1 (en) * | 2000-07-28 | 2002-09-12 | Katsuhiko Kobayashi | Ocular optical characteristic measuring apparatus |
| CN108175375A (en) * | 2017-12-28 | 2018-06-19 | 中国科学院西安光学精密机械研究所 | A kind of portable eyeground imaging system and its imaging method |
| CN108814545A (en) * | 2018-03-14 | 2018-11-16 | 北京理工大学 | It is a kind of be used in combination with smart phone exempt from mydriasis fundus camera |
| CN210019286U (en) * | 2019-01-23 | 2020-02-07 | 启东晟涵医疗科技有限公司 | Fundus camera optical system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141187A (en) * | 2019-04-17 | 2019-08-20 | 南京览视医疗科技有限公司 | One kind is portable to exempt from mydriasis fundus camera |
| CN112932406A (en) * | 2021-01-26 | 2021-06-11 | 宁波明星科技发展有限公司 | Fundus camera optical system |
| CN114587268A (en) * | 2022-04-06 | 2022-06-07 | 上海观爱医疗科技有限公司 | Full-automatic optometry topographic map instrument and optometry method |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Baicheng Inventor after: Zeng Xiangyu Inventor after: Tian Miao Inventor after: Xu Banglian Inventor after: Li Xufeng Inventor before: Li Bocheng Inventor before: Zeng Xiangyu Inventor before: Tian Miao Inventor before: Xu Banglian Inventor before: Li Xufeng |
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Effective date of registration: 20210604 Address after: Room 4004, 4 / F, unit 3, building 8, 160 basheng Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 200120 Applicant after: Shanghai guanai Medical Technology Co.,Ltd. Address before: No. 500, Linyang Road, Qidong Economic Development Zone, Nantong City, Jiangsu Province Applicant before: QIDONG SHENGHAN MEDICAL TECHNOLOGY Co.,Ltd. |