CN110477857A - A kind of holography fundus camera - Google Patents
A kind of holography fundus camera Download PDFInfo
- Publication number
- CN110477857A CN110477857A CN201910886452.7A CN201910886452A CN110477857A CN 110477857 A CN110477857 A CN 110477857A CN 201910886452 A CN201910886452 A CN 201910886452A CN 110477857 A CN110477857 A CN 110477857A
- Authority
- CN
- China
- Prior art keywords
- light
- optical path
- reference beam
- holography
- fundus camera
- 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
- 238000001093 holography Methods 0.000 title claims description 12
- 230000003287 optical effect Effects 0.000 claims abstract description 47
- 210000001747 pupil Anatomy 0.000 claims abstract description 12
- 210000001525 retina Anatomy 0.000 claims abstract description 6
- 230000002207 retinal effect Effects 0.000 claims abstract description 6
- 230000000644 propagated effect Effects 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 6
- 210000001508 eye Anatomy 0.000 abstract description 8
- 210000005252 bulbus oculi Anatomy 0.000 abstract description 3
- 230000011514 reflex Effects 0.000 abstract description 3
- 210000004087 cornea Anatomy 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 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
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/14—Arrangements specially adapted for eye photography
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Eye Examination Apparatus (AREA)
- Holo Graphy (AREA)
Abstract
The present invention relates to a kind of holographic fundus cameras, are made of object light beam optical path, reference beam optical path.Comprising: light source, for issuing directional light；Spatial filter, for eliminating stray light；The directional light that light source issues is divided into object beam and reference beam by beam splitter；Object beam is propagated to pupil of human, and reaches retina after the pupil of human, then form Returning beam after the retinal reflex by object light beam optical path；Reference beam optical path propagates the reference beam formed through beam splitter；Holographic light-sensitive plate is generated on it by Returning beam and reference beam and interferes and record interference image, and the interference image reproduces the hologram image of human eye under the irradiation of reference beam.The hologram image can clearly be observed that diameter is 5 microns of retinal cone, moreover it is possible to observe the composition part of eyes, the form of cornea, crystal, vitreum and retina.The hologram that eyes single exposure obtains can provide the permanent record of entire eyeball structure, there is important clinical meaning.
Description
Technical field
The invention belongs to opticianry apparatus fields, and in particular to a kind of holography fundus camera.
Background technique
Fundus camera is the important medical optical instrument of ophthalmology.The fundus camera that Hospitals at Present has generally used, with
Ordinary camera is similar, and what is formed on its egative film or photoelectric cell (such as CCD, CMOS) is the two dimension of a true three-dimension object
It indicates.This is because this mode only has recorded the intensity distribution of light, without the phase of recording light, thus that we obtain
It is the photo of a two dimensional image.With the raising of medical level, clinically need to obtain the eyeground of high-resolution solid
Photo.Then holographic fundus camera will provide more advanced Medical Devices to realize this demand.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of holographic fundus camera.
To achieve the above object, the present invention provides the following technical scheme that a kind of holography fundus camera comprising:
Light source, for issuing directional light；
The directional light that light source issues is divided into object beam and reference beam by beam splitter；
Object beam is propagated to pupil of human, and reaches retina after the pupil of human, then through the view by object light beam optical path
Returning beam is formed after retinal reflection；
Reference beam optical path propagates the reference beam formed through beam splitter；
Holographic light-sensitive plate is generated on it by Returning beam and reference beam and interferes and record interference image, the interference image
Under the irradiation of reference beam, the hologram image of human eye is reproduced.
Installation space filter in optical path between the light source and beam splitter.
The object light beam optical path includes the first optical path for object beam to be exposed to pupil of human and by Returning beam
Propagate to the second optical path of holographic light-sensitive plate.
First optical path is the fiber optic bundle by annular array.
First optical path includes the first reflective mirror, light splitting part and the mesh being successively arranged along the optical axis of object light beam optical path
Mirror.
Annular light bar is set on front side of first reflective mirror.
Second optical path includes eyepiece, light splitting part and the lens being successively arranged along the optical axis of Returning beam optical path
Group.
The reference beam propagation unit includes that reflecting element successively is arranged along the optical axis of reference beam optical path.
The reflecting element is the second reflective mirror or prism.
Beneficial effects of the present invention: reference beam optical path shares the laser in object light beam optical path, spatial filter, through being divided
It after element, is separated with object light beam optical path, a reflecting element is set again in reference beam optical path, and above-mentioned laser is through an above-mentioned system
Reference beam is projected after this reflecting element on holographic light-sensitive plate after column optical element.In this way, object beam and reference beam are just
It is formed on holographic dry plate and interferes and record interference image.Obtained interference image, under the irradiation of reference beam, it will generate
The reproduction of hologram image.
The hologram image can clearly be observed that diameter is 5 microns of retinal cone, moreover it is possible to observe eye
The composition part of eyeball, the form of cornea, crystal, vitreum and retina.The hologram that eyes single exposure obtains can provide
The permanent record of entire eyeball structure, there is important clinical meaning.
Detailed description of the invention
Fig. 1 is the light path schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the light path schematic diagram of the embodiment of the present invention 2.
Fig. 3 is that the fiber optic bundle of the embodiment of the present invention 2 arranges end view.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. shall be understood in a broad sense,
For example, " fixation " may be a fixed connection, it may be a detachable connection, or integral；It can be mechanical connection, be also possible to
Electrical connection；It can be directly connected, the connection inside two elements or two can also be can be indirectly connected through an intermediary
The interaction relationship of a element, unless otherwise restricted clearly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and should not be understood as
Its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment
Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution
Conflicting or cannot achieve when occur will be understood that the combination of this technical solution is not present, also not the present invention claims guarantor
Within the scope of shield.
The present invention provides a kind of holographic fundus cameras comprising:
Light source, for issuing directional light, wherein light source uses laser；
The directional light that light source issues is divided into object beam and reference beam by beam splitter；
Object beam is propagated to pupil of human, and reaches retina after the pupil of human, then through the view by object light beam optical path
Returning beam is formed after retinal reflection；
Reference beam optical path propagates the reference beam formed through beam splitter；
Holographic light-sensitive plate is generated on it by Returning beam and reference beam and interferes and record interference image, the interference image
Under the irradiation of reference beam, the hologram image of human eye is reproduced.
Installation space filter between light source and beam splitter carries out stray light elimination by spatial filter.
Embodiment 1
As shown in Figure 1, laser 1 issues collimated light beam, after spatial filter 2 eliminates stray light, through beam splitter 3, it is divided into two
Shu Guang, i.e. object beam and reference beam.On the optical axis of object light beam optical path, equipped with annular light bar 4 to prevent corneal center position
It is reflective.Then object beam is through reflective mirror 5, and light splitting part 6, ocular lens 7, into eye pupil hole, arrival eyeground 8 illuminates at this time
The object being recorded i.e. eyeground.The light returned through fundus reflex, then through ocular lens 7, light splitting part 6, lens group 9 is fallen in complete
It ceases on photographic plate 10.
Another aspect is equipped with reflective mirror or prism 11, reference beam is projected entirely on the optical axis of reference beam optical path
It ceases on photographic plate 10.In this way, object beam and reference beam, which just on holographic light-sensitive plate, generate to interfere, simultaneously records interference image.
Embodiment 2
As shown in Fig. 2, laser 1 issues collimated light beam, after spatial filter 2 eliminates stray light, through beam splitter 3, arrival is pressed
Then the fiber optic bundle that the fiber optic bundle 12 of annular array, i.e. end face such as Fig. 3 mode arrange directly reaches pupil portion by fiber optic bundle
Position, to illuminate eyeground 8.After fundus reflex is returned, through ocular lens 7, eyeground lens group 9 is fallen on holographic light-sensitive plate 10.
Another aspect is equipped with reflective mirror or prism 11 on the optical axis of reference beam optical path, projects light beams upon holographic sense
On tabula rasa 10, in this way, object beam and reference beam, which just on holographic light-sensitive plate, generate to interfere, simultaneously records interference image.
Embodiment is not construed as limitation of the present invention, but any based on spiritual improvements introduced of the invention, all should be
Within protection scope of the present invention.
Claims (8)
1. a kind of holography fundus camera, it is characterised in that: comprising:
Light source, for issuing directional light；
Spatial filter, for eliminating stray light；
The directional light that light source issues is divided into object beam and reference beam by beam splitter；
Object beam is propagated to pupil of human, and reaches retina after the pupil of human, then through the view by object light beam optical path
Returning beam is formed after retinal reflection；
Reference beam optical path propagates the reference beam formed through beam splitter；
Holographic light-sensitive plate is generated on it by Returning beam and reference beam and interferes and record interference image, the interference image
Under the irradiation of reference beam, the hologram image of human eye is reproduced.
2. holography fundus camera according to claim 1, it is characterised in that: the object light beam optical path includes for by object
Light beam exposes to the first optical path of pupil of human and Returning beam is propagated to the second optical path of holographic light-sensitive plate.
3. holography fundus camera according to claim 2, it is characterised in that: first optical path is by annular array
Fiber optic bundle.
4. holography fundus camera according to claim 2, it is characterised in that: first optical path includes successively along object light
The first reflective mirror, light splitting part and the ocular lens of the optical axis setting of beam optical path.
5. holography fundus camera according to claim 4, it is characterised in that: setting annular on front side of first reflective mirror
Light bar.
6. holography fundus camera according to claim 3, it is characterised in that: second optical path includes successively along return
Ocular lens, light splitting part and the lens group of the optical axis setting of beam path.
7. holography fundus camera according to claim 1, it is characterised in that: the reference beam optical path includes successively edge
Reflecting element is arranged in the optical axis of reference beam optical path.
8. it is according to claim 7 holography fundus camera, it is characterised in that: the reflecting element be the second reflective mirror or
Prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910886452.7A CN110477857A (en) | 2019-09-19 | 2019-09-19 | A kind of holography fundus camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910886452.7A CN110477857A (en) | 2019-09-19 | 2019-09-19 | A kind of holography fundus camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110477857A true CN110477857A (en) | 2019-11-22 |
Family
ID=68558701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910886452.7A Pending CN110477857A (en) | 2019-09-19 | 2019-09-19 | A kind of holography fundus camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110477857A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3460887A (en) * | 1965-12-20 | 1969-08-12 | American Optical Corp | Apparatus for viewing interior parts of an eye and holographically recording phase and amplitude information received therefrom |
| CN203811529U (en) * | 2014-04-29 | 2014-09-03 | 昆明理工大学 | Holographic detection device based on LED (Light Emitting Diode) light source |
| US9179841B2 (en) * | 2010-11-24 | 2015-11-10 | University Of South Florida | Adaptive optics ophthalmic imager without wavefront sensor or wavefront corrector |
| US20160015264A1 (en) * | 2014-07-17 | 2016-01-21 | Samsung Electronics Co., Ltd. | Imaging system and method for diagnostic imaging |
| CN105324649A (en) * | 2013-06-20 | 2016-02-10 | 赛莱特私人有限公司 | Ocular metrology employing spectral wavefront analysis of reflected light |
| CN210902960U (en) * | 2019-09-19 | 2020-07-03 | 温州高视雷蒙光电科技有限公司 | Holographic fundus camera |
-
2019
- 2019-09-19 CN CN201910886452.7A patent/CN110477857A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3460887A (en) * | 1965-12-20 | 1969-08-12 | American Optical Corp | Apparatus for viewing interior parts of an eye and holographically recording phase and amplitude information received therefrom |
| US9179841B2 (en) * | 2010-11-24 | 2015-11-10 | University Of South Florida | Adaptive optics ophthalmic imager without wavefront sensor or wavefront corrector |
| CN105324649A (en) * | 2013-06-20 | 2016-02-10 | 赛莱特私人有限公司 | Ocular metrology employing spectral wavefront analysis of reflected light |
| CN203811529U (en) * | 2014-04-29 | 2014-09-03 | 昆明理工大学 | Holographic detection device based on LED (Light Emitting Diode) light source |
| US20160015264A1 (en) * | 2014-07-17 | 2016-01-21 | Samsung Electronics Co., Ltd. | Imaging system and method for diagnostic imaging |
| CN210902960U (en) * | 2019-09-19 | 2020-07-03 | 温州高视雷蒙光电科技有限公司 | Holographic fundus camera |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3309615B2 (en) | Image observation apparatus and binocular image observation apparatus using the same | |
| US7993000B2 (en) | Method and apparatus for imaging an eye of a small animal | |
| JP2000231060A5 (en) | ||
| JPS5843090B2 (en) | Ophthalmological device with adjustment system | |
| GB2034499A (en) | Ophthalmological apparatus | |
| CN109893086A (en) | A kind of fundus camera that lighting source is coaxial with fixation light source | |
| JP2003167212A (en) | Video imparting apparatus | |
| CN111134616A (en) | Fundus camera lighting system and fundus camera | |
| JP2927445B2 (en) | Stereoscopic fundus camera | |
| US5914770A (en) | Ophthalmological examination instrument and method for operation thereof | |
| CN110477857A (en) | A kind of holography fundus camera | |
| CN210902960U (en) | Holographic fundus camera | |
| US6126287A (en) | Operation microscope | |
| KR101394382B1 (en) | Optical coherence tomography device for simultaneous photographing retina and choroid | |
| JPH05245109A (en) | Eyeground camera | |
| JPS6034378B2 (en) | fundus camera | |
| JPS6145723A (en) | Non-scattered iris type eyeground camera | |
| JP2938488B2 (en) | Surgical microscope | |
| JPH041622B2 (en) | ||
| JPS6125762Y2 (en) | ||
| DONALDSON | Stereophotographic systems | |
| JPH02203833A (en) | Cubic eyeground camera | |
| SU1292726A1 (en) | Apparatus for investigating and photographing fundus of the eye | |
| JPS6132642Y2 (en) | ||
| JP2707257B2 (en) | Fundus camera |
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 |