CN206443683U - Ultra-wide angle eyeground imaging system - Google Patents
Ultra-wide angle eyeground imaging system Download PDFInfo
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- CN206443683U CN206443683U CN201621208148.5U CN201621208148U CN206443683U CN 206443683 U CN206443683 U CN 206443683U CN 201621208148 U CN201621208148 U CN 201621208148U CN 206443683 U CN206443683 U CN 206443683U
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- curved surface
- scanning mirror
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- eyeground
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Abstract
The utility model discloses a kind of ultra-wide angle eyeground imaging system, including light source, optical splitter, scan components, optical reflector of curved surface, detecting pinhole and image-forming assembly, the scan components include the first scanning mirror scanned in a first direction and the second scanning mirror scanned in second direction；The light that the light source is sent is reflected, subsequently into eyeground by the first scanning mirror, optical reflector of curved surface, the second scanning mirror, optical reflector of curved surface respectively after the optical splitter；Light into eyeground along backtracking to the optical splitter, is then passed through the detecting pinhole after retinal reflex, and enters the image-forming assembly.Compared to prior art, the utility model ultra-wide angle eyeground imaging system is to realize fundus imaging by being totally reflected, and effectively prevent lens mould composition as the ghost image brought.Again because the curvature of optical reflector of curved surface is gradually changed, therefore the light reflected through the optical reflector of curved surface can enter eyeground with larger incidence angle, it is achieved thereby that big view field imaging.
Description
Technical field
The utility model is related to a kind of eyeground imaging system, more particularly to a kind of total-reflection type cofocus scanning fundus imaging system
System.
Background technology
Fundus camera belongs to medical imaging field, for obtaining human eye retina's image, so that healthcare givers checks eyeground
Disease or medical assistance personnel judge the state of an illness of other organs.Because the blood vessel on eyeground is that human body uniquely can be direct by body surface
It was observed that blood vessel, healthcare givers can check optic nerve, retina, choroid and the dioptric on eyeground by fundus camera
Medium whether there is lesion, while can also be diagnosed by the assistance of fundus camera to other systemic diseases and the state of an illness is sentenced
It is disconnected, for example detect cerebral infarction, cerebral hemorrhage, cerebral arteriovenous malformation, brain tumor, diabetes, nephrosis, high blood by screening retinograph
Pressure, retinopathy of prematurity, glaucoma, astogeny macular degeneration etc..It is more early to detect that these diseases are more conducive to clinic to control
Treat, therefore fundus camera is commonly used to Clinical screening fundus oculi disease, as indispensable medicine equipment.
At present, fundus camera mainly realizes fundus imaging by lens module.But, lens module meeting indirect illumination light,
So as to form ghost image, image quality is influenceed.In addition, the imaging viewing field of lens mould group imaging system is smaller, it is impossible to meet medical people
Demand of the member to big view field imaging.
In view of the above problems, it is necessary to a kind of new eyeground imaging system is provided, to solve the above problems.
Utility model content
In view of the shortcomings of the prior art, the technical problem that the utility model is solved is to provide a kind of ultra-wide angle fundus imaging system
System, the ultra-wide angle eyeground imaging system can be prevented effectively from lens mould composition as the ghost image brought, and can realize big visual field
Imaging.
In order to solve the above technical problems, what the technical solution of the utility model was realized in：
A kind of ultra-wide angle eyeground imaging system, including light source, optical splitter, scan components, detecting pinhole and image-forming assembly,
The scan components include the first scanning mirror scanned in a first direction and the second scanning mirror scanned in second direction；It is special
Levy and be：The ultra-wide angle eyeground imaging system also includes the optical reflector of curved surface being oppositely arranged with the scan components；The light
The light that source is sent is passed through after the optical splitter, respectively by the first scanning mirror, optical reflector of curved surface, the second scanning mirror, optical reflector of curved surface
Reflection, subsequently into eyeground；Into eyeground light by after retinal reflex again respectively through optical reflector of curved surface, the second scanning mirror, song
The optical splitter is returned after face reflective mirror, the reflection of the first scanning mirror, and through the detecting pinhole after the spectrophotometric reflection,
Into the image-forming assembly.
Further, the optical reflector of curved surface is in ellipsoid planar, and concave surface is reflecting surface.
Further, first scanning mirror reflexes to fortune of the light of the optical reflector of curved surface on the optical reflector of curved surface
Dynamic rail mark is parabola；Second scanning mirror reflexes to motion of the light of the optical reflector of curved surface on the optical reflector of curved surface
Track is parabola.
Further, rotational angle of first scanning mirror within the unit interval is the first scan angle；Described first sweeps
Retouch mirror and reflex to movement locus of the light of the optical reflector of curved surface on the optical reflector of curved surface in the unit interval for the first track
Line, the angle between the tangent line of first trajectory in starting point and the tangent line in terminal is the first track angle；Described first sweeps
Retouch angle, the difference of the first track angle is constant.
Further, rotational angle of second scanning mirror within the unit interval is the second scan angle；Described second sweeps
Retouch mirror and reflex to movement locus of the light of the optical reflector of curved surface on the optical reflector of curved surface in the unit interval for the second track
Line, the angle between the tangent line of second trajectory in starting point and the tangent line in terminal is the second track angle；Described second sweeps
Retouch angle, the difference of the second track angle is constant.
Further, the optical splitter is half-reflecting half mirror.
Further, the optical splitter is hollow reflective mirror.
Further, the optical splitter is dichroic mirror.
Further, first scanning mirror is resonant scanning mirror or rotating polygon scanning mirror；Second scanning
Mirror is mechanical scan mirror.
Further, it is additionally provided with condenser lens between the optical splitter and detecting pinhole.
The beneficial effects of the utility model are：Compared to prior art, the utility model ultra-wide angle eyeground imaging system is
Fundus imaging is realized by being totally reflected, lens mould composition is effectively prevent as the ghost image brought, and then improve imaging
Quality.Gradually changed again due to the curvature of optical reflector of curved surface, thus the light reflected through the optical reflector of curved surface can with compared with
Big incidence angle enters eyeground（The visual angle imaging on 100 ° ~ 180 ° of eyeground can be realized）, it is achieved thereby that big view field imaging.
Brief description of the drawings
Fig. 1 show the structural representation of the utility model ultra-wide angle eyeground imaging system.
Embodiment
Refer to shown in Fig. 1, the utility model ultra-wide angle eyeground imaging system 100 includes light source 10, optical splitter 20, scanning
Component 30, optical reflector of curved surface 40, detecting pinhole 50 and the image-forming assembly 60 being oppositely arranged with the scan components 30.It is described to sweep
Retouching component 30 includes the first scanning mirror 31 scanned in a first direction and the second scanning mirror 32 scanned in second direction, described
First direction, second direction are orthogonal.The light that the light source 10 is sent is passed through after the optical splitter 20, respectively by the first scanning mirror
31st, optical reflector of curved surface 40, the second scanning mirror 32, optical reflector of curved surface 40 reflect, subsequently into eyeground.Light into eyeground is by view
Returned respectively after optical reflector of curved surface 40, the second scanning mirror 32, optical reflector of curved surface 40, the reflection of the first scanning mirror 31 again after film reflection
The optical splitter 20, and the detecting pinhole 50 is passed through after the optical splitter 20 reflection, into the image-forming assembly 60.
Refer to shown in Fig. 1, the light source 10 can be the complex light of Single wavelength laser or multi-wavelength, also may be used
To be natural light.The optical splitter 20 can be dichroic mirror or half-reflecting half mirror or hollow reflective mirror.Institute
Stating also has collimation lens 71 between light source 10 and the optical splitter 20 so that the light that light source 10 is sent is penetrated in the form of directional light
To the optical splitter 20.First scanning mirror 31 can be resonant scanning mirror or rotating polygon scanning mirror.Institute
It is mechanical scan mirror or other big angle rotary scanning mirrors to state the second scanning mirror 32.The optical reflector of curved surface 40 is spherical mirror
Or ellipsoidal mirror, and concave surface is reflecting surface.There is condenser lens 72 between the detecting pinhole 50 and the optical splitter 20.Institute
Image-forming assembly 60 is stated for imaging sensor.
Compared to prior art, the utility model ultra-wide angle eyeground imaging system 100 is to realize eyeground by being totally reflected
Imaging, lens mould composition is effectively prevent as the ghost image brought, and then improves image quality.Again due to optical reflector of curved surface
40 curvature is gradually changed, therefore the light reflected through the optical reflector of curved surface 40 can enter eyeground with larger incidence angle
（The visual angle imaging on 100 ° ~ 180 ° of eyeground can be realized）, it is achieved thereby that big view field imaging.The utility model ultra-wide angle eyeground into
As system 100 can apply to autofluorescence retina radiography, choroid radiography, near infrared imaging, color fundus imaging etc..
In addition, in order to obtain more preferable image quality, the optical reflector of curved surface 40 is also designed to following styles：
First scanning mirror 31 reflexes to motion of the light of the optical reflector of curved surface 40 on the optical reflector of curved surface 40
Track is parabola；Second scanning mirror 32 reflexes to the light of the optical reflector of curved surface 40 on the optical reflector of curved surface 40
Movement locus is parabola.
In addition, in order to realize uniform scanning, the optical reflector of curved surface 40 is also designed to following styles：
Rotational angle of first scanning mirror 31 within the unit interval is the first scan angle.First scanning mirror 31 is anti-
Movement locus of the light of the optical reflector of curved surface 40 on the optical reflector of curved surface in the unit interval is incident upon for the first trajectory, institute
It is the first track angle to state the angle between tangent line of first trajectory in starting point and the tangent line in terminal.First scan angle,
The difference of first track angle is constant.
Rotational angle of second scanning mirror 32 within the unit interval is the second scan angle.The second scanning mirror reflection
Extremely movement locus of the light of the optical reflector of curved surface 40 within the upper unit interval of optical reflector of curved surface 40 is the second trajectory, institute
It is the second track angle to state the angle between tangent line of second trajectory in starting point and the tangent line in terminal.Second scan angle,
The difference of second track angle is constant.
In particular, for the person of ordinary skill of the art, made under teaching of the present utility model
For equivalence changes of the present utility model, it should be included in the scope that present utility model application the scope of the claims is advocated.
Claims (10)
1. a kind of ultra-wide angle eyeground imaging system, including light source, optical splitter, scan components, detecting pinhole and image-forming assembly, institute
Stating scan components includes the first scanning mirror scanned in a first direction and the second scanning mirror scanned in second direction；Its feature
It is：The ultra-wide angle eyeground imaging system also includes the optical reflector of curved surface being oppositely arranged with the scan components；The light source
The light sent is passed through after the optical splitter, anti-by the first scanning mirror, optical reflector of curved surface, the second scanning mirror, optical reflector of curved surface respectively
Penetrate, subsequently into eyeground；Into eyeground light by after retinal reflex again respectively through optical reflector of curved surface, the second scanning mirror, curved surface
The optical splitter is returned after reflective mirror, the reflection of the first scanning mirror, and the detecting pinhole is passed through after the spectrophotometric reflection, is entered
Enter the image-forming assembly.
2. ultra-wide angle eyeground imaging system as claimed in claim 1, it is characterised in that：The optical reflector of curved surface is in ellipsoid
Shape, and concave surface is reflecting surface.
3. ultra-wide angle eyeground imaging system as claimed in claim 1, it is characterised in that：First scanning mirror reflexes to described
Movement locus of the light of optical reflector of curved surface on the optical reflector of curved surface is parabola；Second scanning mirror reflexes to the song
Movement locus of the light of face reflective mirror on the optical reflector of curved surface is parabola.
4. ultra-wide angle eyeground imaging system as claimed in claim 1, it is characterised in that：First scanning mirror is in the unit interval
Interior rotational angle is the first scan angle；The light that first scanning mirror reflexes to the optical reflector of curved surface is reflective in the curved surface
Movement locus on mirror in the unit interval is the first trajectory, tangent line of first trajectory in starting point and the tangent line in terminal
Between angle be the first track angle；First scan angle, the difference of the first track angle are constant.
5. ultra-wide angle eyeground imaging system as claimed in claim 1, it is characterised in that：Second scanning mirror is in the unit interval
Interior rotational angle is the second scan angle；The light that second scanning mirror reflexes to the optical reflector of curved surface is reflective in the curved surface
Movement locus on mirror in the unit interval is the second trajectory, tangent line of second trajectory in starting point and the tangent line in terminal
Between angle be the second track angle；Second scan angle, the difference of the second track angle are constant.
6. ultra-wide angle eyeground imaging system as claimed in claim 1, it is characterised in that：The optical splitter is half-reflecting half mirror.
7. ultra-wide angle eyeground imaging system as claimed in claim 1, it is characterised in that：The optical splitter is hollow reflective mirror.
8. ultra-wide angle eyeground imaging system as claimed in claim 1, it is characterised in that：The optical splitter is dichroic mirror.
9. ultra-wide angle eyeground imaging system as claimed in claim 1, it is characterised in that：First scanning mirror is resonance scanning
Mirror or rotating polygon scanning mirror；Second scanning mirror is mechanical scan mirror.
10. ultra-wide angle eyeground imaging system as claimed in claim 1, it is characterised in that：The optical splitter and detecting pinhole it
Between be additionally provided with condenser lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621208148.5U CN206443683U (en) | 2016-11-09 | 2016-11-09 | Ultra-wide angle eyeground imaging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621208148.5U CN206443683U (en) | 2016-11-09 | 2016-11-09 | Ultra-wide angle eyeground imaging system |
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| Publication Number | Publication Date |
|---|---|
| CN206443683U true CN206443683U (en) | 2017-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621208148.5U Expired - Fee Related CN206443683U (en) | 2016-11-09 | 2016-11-09 | Ultra-wide angle eyeground imaging system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106388765A (en) * | 2016-11-09 | 2017-02-15 | 苏州微清医疗器械有限公司 | Ultra-wide field fundus imaging system |
-
2016
- 2016-11-09 CN CN201621208148.5U patent/CN206443683U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106388765A (en) * | 2016-11-09 | 2017-02-15 | 苏州微清医疗器械有限公司 | Ultra-wide field fundus imaging system |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170829 Termination date: 20191109 |