CN206166900U - Handheld fundus camera - Google Patents
Handheld fundus camera Download PDFInfo
- Publication number
- CN206166900U CN206166900U CN201620725250.6U CN201620725250U CN206166900U CN 206166900 U CN206166900 U CN 206166900U CN 201620725250 U CN201620725250 U CN 201620725250U CN 206166900 U CN206166900 U CN 206166900U
- Authority
- CN
- China
- Prior art keywords
- fundus camera
- hand
- main part
- fixation lamp
- lens barrel
- 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.)
- Expired - Fee Related
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- Eye Examination Apparatus (AREA)
Abstract
The utility model discloses a handheld fundus camera, including the casing and with casing matched with lens cone, handheld fundus camera still is provided with and looks the lamp admittedly to admittedly look the eyes of not surveyd, admittedly it is located to look the lamp handheld fundus camera's the outside. Compared with the prior art, the utility model discloses handheld fundus camera is provided with and is located the lamp is looked in consolidating of the handheld fundus camera outside for the fixed optical axis of being shot the eye, and then realize the fixed optical axis of being shot the eye through the conjugation ability of staring of eyes, thereby the smooth signal interference who has avoided traditional and look admittedly the lamp to set up in the lens cone to bring, and then the drawback of production ghost image.
Description
Technical field
The utility model is related to a kind of hand fundus camera, more particularly to a kind of hand-held eye-ground photography with fixation lamp
Machine.
Background technology
In order to ensure photographing high-quality human eye retina's image, when shooting eye fundus image using hand fundus camera
It is required that the angle between the optical axis of the human eye's visual axis being taken and the hand-held fundus camera remains certain angle.For
This allows human eye to fix the sighting target watched attentively, it is necessary to set, so that the optical axis of the eye that is taken maintains certain position.
In order to solve the above problems, existing hand fundus camera is directly to set sighting target in the optical path, and watches institute attentively
The eyes for stating sighting target are exactly the eye that is taken.But there is following defect in this kind of method.First, many patients are simple eye illness, and
And diseased eye there are problems that watching attentively, therefore such patient is cannot to fix the optical axis by setting sighting target in the optical path.Its
Secondary, the visible ray introduced in the optical path for fixation can increase the intensity of veiling glare, it is easy to form ghost image.Finally, in the optical path
Setting sighting target can cause that the assembling of optical system, debugging difficulty are substantially improved, and be unfavorable for extensive assembling production.
In view of the above problems, it is necessary to a kind of new hand fundus camera 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 hand fundus camera,
The hand fundus camera is provided with the fixation lamp outside the hand fundus camera, is used to the fixed eye that is not taken
The optical axis, and then the optical axis of the fixed eye that is taken is realized by the conjugate gaze ability of eyes.
In order to solve the above technical problems, the technical solution of the utility model is as described below：
A kind of hand fundus camera, including housing and the lens barrel that is engaged with the housing, the hand-held eyeground are shone
Camera is additionally provided with fixation lamp, and so as to the eyes that fixation is not observed, the fixation lamp position is in the hand fundus camera
Outside.
Further, the housing includes main part and stretches out the handle to be formed, institute from the main part side
State main part matched with the lens barrel；The fixation lamp is arranged on the main part, and positioned at the main part with it is described
The matched side of lens barrel.
Further, the fixation lamp position is at the close main part on the lens barrel.
Further, the quantity of the fixation lamp is two, and on the axisymmetrical of the lens barrel.
Further, the hand fundus camera is additionally provided with control circuit, to control the brightness of the fixation lamp.
Further, the fixation lamp is LED or diode laser or light diffuser.
The beneficial effects of the utility model are：Compared to prior art, the utility model hand fundus camera is provided with
Fixation lamp on the outside of the hand fundus camera, is used to the optical axis of the fixed eye that is not taken, and then being total to by eyes
Yoke stares ability to realize the optical axis of the fixed eye that is taken, and the light brought in lens barrel is arranged at so as to avoid traditional fixation lamp
Signal is disturbed, and then the drawbacks of generation ghost image.
Brief description of the drawings
Fig. 1 show the schematic perspective view of the utility model hand fundus camera.
Fig. 2 is the schematic perspective view of another angle of hand fundus camera shown in Fig. 1.
The partial enlarged drawing of hand fundus camera shown in Fig. 3 bitmaps 2.
Specific embodiment
Refer to shown in Fig. 1 and Fig. 2, the utility model hand fundus camera 100 include housing 10 and with it is described
The lens barrel 20 that housing 10 is engaged.The housing 10 includes main part 11 and stretches out to be formed from the side of the main part 11
Handle 12.The main part 11 is matched with the lens barrel 20.Imaging lens arrangement is provided with the lens barrel 20（Do not scheme
Show）And lighting source（It is not shown）.
Refer to shown in Fig. 2 and Fig. 3, the hand fundus camera 100 is additionally provided with fixation lamp 30.The fixation lamp
30 outsides for being located at the hand fundus camera 100, so as to the eyes that fixation is not observed, so as to be coagulated by the conjugation of eyes
The optical axis of the fixed eye that is taken is realized depending on ability.In the present embodiment, the fixation lamp 30 is arranged on the main part 11,
And positioned at the main part 11 and the matched side of the lens barrel 20, but in other embodiments, the fixation lamp 30 is also
May be located at and be close at the main part 11 on the lens barrel 20.In the present embodiment, the quantity of the fixation lamp 30 is 2,
And on the axisymmetrical of the lens barrel 20, but in other embodiments, the quantity of the fixation lamp 30 can also be 1
It is individual, or more than 2.The hand fundus camera 100 is additionally provided with control circuit（It is not shown）, it is described to control
The brightness of fixation lamp.The fixation lamp 30 is LED or diode laser or light diffuser.
Compared to prior art, the utility model hand fundus camera 100 is by being arranged at the hand-held eye-ground photography
The optical axis that the fixation lamp 30 in the outside of machine 100 and the conjugate gaze ability of eyes not only realize the eye that is taken is fixed, and is kept away
Exempt from traditional fixation lamp and be arranged at the optical signal interference brought in the lens barrel 20, and then the drawbacks of generation ghost image.
Claims (6)
1. a kind of hand fundus camera, including housing and the lens barrel being engaged with the housing, it is characterised in that：The hand
Hold fundus camera and be additionally provided with fixation lamp, so as to the eyes that fixation is not observed, the fixation lamp position is in the hand-held eyeground
The outside of camera.
2. hand fundus camera as claimed in claim 1, it is characterised in that：The housing includes main part and from the master
Body portion side stretches out the handle to be formed, and the main part is matched with the lens barrel；The fixation lamp is arranged at the master
In body portion, and positioned at the main part side matched with the lens barrel.
3. hand fundus camera as claimed in claim 1, it is characterised in that：The housing includes main part and described in
Main part side stretches out the handle to be formed, and the main part is matched with the lens barrel；The fixation lamp position is in the mirror
On cylinder at the main part.
4. hand fundus camera as claimed in claim 2 or claim 3, it is characterised in that：The quantity of the fixation lamp is two, and
Axisymmetrical on the lens barrel.
5. hand fundus camera as claimed in claim 1, it is characterised in that：The hand fundus camera is additionally provided with control
Circuit processed, to control the brightness of the fixation lamp.
6. hand fundus camera as claimed in claim 1, it is characterised in that：The fixation lamp is LED or diode
Laser or light diffuser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620725250.6U CN206166900U (en) | 2016-07-12 | 2016-07-12 | Handheld fundus camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620725250.6U CN206166900U (en) | 2016-07-12 | 2016-07-12 | Handheld fundus camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206166900U true CN206166900U (en) | 2017-05-17 |
Family
ID=58673525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620725250.6U Expired - Fee Related CN206166900U (en) | 2016-07-12 | 2016-07-12 | Handheld fundus camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206166900U (en) |
-
2016
- 2016-07-12 CN CN201620725250.6U patent/CN206166900U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20180712 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |