CN203709994U - Ophthalmic optics tomography system for realizing switching between anterior segment imaging and posterior segment imaging - Google Patents
Ophthalmic optics tomography system for realizing switching between anterior segment imaging and posterior segment imaging Download PDFInfo
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- CN203709994U CN203709994U CN201420065163.3U CN201420065163U CN203709994U CN 203709994 U CN203709994 U CN 203709994U CN 201420065163 U CN201420065163 U CN 201420065163U CN 203709994 U CN203709994 U CN 203709994U
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- 238000003384 imaging method Methods 0.000 title claims abstract description 80
- 238000003325 tomography Methods 0.000 title abstract 4
- 230000003287 optical effect Effects 0.000 claims abstract description 36
- 238000012014 optical coherence tomography Methods 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000005286 illumination Methods 0.000 claims description 58
- 238000002591 computed tomography Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 3
- 238000002603 single-photon emission computed tomography Methods 0.000 claims 10
- 238000000034 method Methods 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 230000004438 eyesight Effects 0.000 abstract description 3
- 238000012634 optical imaging Methods 0.000 abstract description 2
- 210000000695 crystalline len Anatomy 0.000 description 142
- 230000000694 effects Effects 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 4
- 210000003128 head Anatomy 0.000 description 3
- 230000002459 sustained effect Effects 0.000 description 3
- 210000004087 cornea Anatomy 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 208000031471 Macular fibrosis Diseases 0.000 description 1
- 208000003435 Optic Neuritis Diseases 0.000 description 1
- 208000002367 Retinal Perforations Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000030533 eye disease Diseases 0.000 description 1
- 210000004220 fundus oculi Anatomy 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000002189 macula lutea Anatomy 0.000 description 1
- 208000029233 macular holes Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000001749 optic atrophy Diseases 0.000 description 1
- 210000001328 optic nerve Anatomy 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Abstract
The utility model belongs to the field of optical imaging and discloses an ophthalmic optics tomography system for realizing the switching between anterior segment imaging and posterior segment imaging. The system comprises an OCT (optical coherence tomography) optical path, and an illuminating optical path, an objective lens, a lens and a photoelectric conversion unit which are connected with the OCT optical path; illuminating light from the illuminating optical path is focused by the objective lens, is transmitted to the eye ground, is reflected and then is imaged through the objective lens, and the formed image serving as an object space is imaged on the photoelectric conversion unit through the lens, and the outer end of the objective lens is provided with a lens assembly which is assembled to realize the anterior segment imaging and is disassembled to realize the posterior segment imaging. The ophthalmic optics tomography system can realize the switching between the anterior segment imaging and the posterior segment imaging, can realize high-quality imaging according to human eyes with different visions and has higher lateral resolution; meanwhile, the ophthalmic optics tomography system is compact in structural design, the space can be effectively utilized, and the degree of comfort of an examinee is the highest in the anterior segment testing process.
Description
Technical field
This utility model belongs to optical imaging field, is specifically related to a kind of opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched of realizing.
Background technology
Means of optical coherence tomography (OCT), is a kind of new optical diagnostic method, has Noninvasive, untouchable feature.Existing ophthalmic optical coherence tomographic apparatus or can only be to oculi posterior segment imaging, for example, to amphiblestroid inspection, the diagnosis of fundus oculi disease is also had to its indispensable effect, especially to optic nerve (as optic neuritis, optic atrophy), macula lutea disease (as idiopathic macular hole, premacular membranes), detachment of retina, middle slurry, in ooze etc. and to have larger auxiliary diagnosis effect.Can only be to anterior ocular segment imaging, i.e. bio-measurement and the oculopathy research of the ocular anterior segment structure such as corneal, Fang Jiao, crystalline lens, and can carry out preoperative and postoperative dynamic observation and realtime imaging.But do not have a kind of device to use at an examination equipment for eye, realize the simple method of switching of anterior ocular segment imaging and oculi posterior segment imaging.
Utility model content
This utility model provides a kind of can realize the opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched, and its object is to solve and on same examination equipment for eye, cannot realizes anterior ocular segment imaging and the problem to the switching of oculi posterior segment Imaging fast.
The technical solution of the utility model is such:
Realize the opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched, comprising: OCT light path, illumination path and fundus imaging light path; Described fundus imaging light path comprises object lens, the lens and the photoelectric conversion unit that from axle, arrange; The illumination light of described illumination path focuses on and injects optical fundus through described object lens, after reflection again by described object lens imaging, imaging as object space through described lens imaging on described photoelectric conversion unit, it is characterized in that: described object lens arranged outside have can dismantle, realize eye to prosthomere imaging and battery of lens that oculi posterior segment imaging is switched.
Further: between the photocentre of described battery of lens and the photocentre of described object lens, have difference in height, the value of described difference in height is injected the location positioning of described object lens according to incident illumination.
Further: described object lens are arranged in the first debugging lens device; Described battery of lens is arranged in the second debugging lens device; Described the first debugging lens device and described the second debugging lens device removably connect by magnet.
Further: described illumination path comprises and setting gradually: described illumination light, illumination light condenser lens, filtering element (cartridge) mirror and dichroic mirror; Described illumination light is focused on by described object lens after described dichroic mirror outgoing.
Further: described illumination path also comprises the relay lens being arranged between described condenser lens and described dichroic mirror.
Further: described illumination path also comprises the sub-light path of indication, and the sub-light path of described indication comprises indication light source and pilot light light source condenser; Described indication light source and pilot light condenser lens are arranged in the incident position of the reflecting surface of filter lens successively.
Further: described illumination light is that wavelength is illumination light or the LED uniform area light source of the scope viewing area of 600～800nm.
Further: when described illumination light is HONGGUANG, when described indication light source is green glow, described filter lens is HONGGUANG transmit green reflecting mirror.
Further: described OCT light path comprises calculation control device, OCT system and the scanning means connecting in turn, the light that described OCT system is sent is after scanning scanning means, again through described dichroic mirror reflects to described object lens, after described object lens transmission, enter human eye, then be back to OCT system by the former road of human eye.
Further: described battery of lens is the combination of single lens or a plurality of lens.
Useful technique effect of the present utility model: due to anterior ocular segment (cornea) and oculi posterior segment (optical fundus) structure difference, adopt oculi posterior segment OCT camera lens cannot make light beam focus on respectively in these two positions.Oculi posterior segment OCT camera lens can only focus at oculi posterior segment light beam, but cannot make light beam joint before eyes focus on, this utility model can be realized light beam joint before eyes and oculi posterior segment focusing respectively simply and easily, can realize high-quality imaging for the human eye of different visions, there is higher lateral resolution.When needs are realized anterior ocular segment imaging, only need to the second debugging lens device of the first debugging lens device outer end fit on of object lens with battery of lens be housed, making originally can be to anterior ocular segment imaging to the opticianry computed tomography (SPECT) system of oculi posterior segment imaging, and the primary optical axis that makes incident illumination can keep and the optical axis of object lens is on sustained height, the best angle that when optimization is measured anterior ocular segment, head is placed; If desired realize oculi posterior segment imaging, only the second debugging lens device need be removed.This structural design is compact, can effectively utilize space, and makes the level of comfort in measured's joint test process before eyes reach best.By assembling or dismantle battery of lens, can realize the switching that eye is measured and oculi posterior segment is measured anterior ocular segment.
accompanying drawing explanation
Fig. 1 is the system light path figure during to oculi posterior segment imaging;
Fig. 2 debugs after lens device for increasing by second, the system light path figure during to anterior ocular segment imaging.
Fig. 3 is in Fig. 1 during to oculi posterior segment imaging, the local index path between human eye and object lens L4.
Fig. 4 is in Fig. 2 during to anterior ocular segment imaging, and the optical axis of battery of lens L6 and object lens L4 is placed on to the local index path on same level height.
Fig. 5 is in Fig. 2 during to anterior ocular segment imaging, and the optical axis of battery of lens L6 and the optical axis of injecting human eye are placed on to the local index path on same level height.
Fig. 6 is the scheme of installation of battery of lens L6 and object lens L4.
In figure, each part sequence number and corresponding title are respectively: 1, illumination light; 2, indication light source; 3, filter lens; 4, dichroic mirror; 5, as; 6, photoelectric conversion unit; 7, scanning means; 8, human eye; 9, the first debugging lens device; 10, the second debugging lens device; L1, illumination light condenser lens; L2, pilot light condenser lens; L3, relay lens; L4, object lens; L5, lens; L6, battery of lens.
The specific embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain this utility model, and be not used in restriction this utility model.
With reference to figure 1, Fig. 1 is the index path to the probe of oculi posterior segment optical coherence tomography system, comprising: OCT light path, illumination path and object lens L4 and photoelectric conversion unit 6.The illumination light 1 of illumination path enters human eye 8 after the serial optical element of illumination path after object lens L4 transmission again, and finally, in the reflection of the oculi posterior segment place of human eye 8, the light being reflected back, after object lens L4 transmission, forms as 5 again.Picture 5 imagings on photoelectric conversion unit 6 after lens L5 transmission.Photoelectric conversion unit 6 is converted into the signal of telecommunication by optical signal.The light channel structure of Fig. 1 reflection is merely able to the measurement to the oculi posterior segment of human eye, although this light channel structure can be realized the anterior ocular segment imaging to human eye 8, cannot make to focus on light beam joint before eyes, so image quality is very poor.If realize the high-quality anterior ocular segment imaging to human eye 8, need to increase optical lens or optical lens group L6 (see figure 2) in the outside of object lens L4 optical axis, the focal position that changes original optical path is assembled light beam, thereby is obtained high-quality image in the anterior ocular segment of human eye 8.
Referring to figs. 2 and 6.Fig. 2 is the improved index path with the probe that can realize oculi posterior segment imaging and the mutual optical coherence tomography system of switching of anterior ocular segment imaging.Its implementation is such: in Fig. 6, install dismountable the second debugging lens device 10 that battery of lens L6 is housed in the outside that the first debugging lens device 9 of object lens L4 is housed, then human eye 8 is placed in to the outside port of the second debugging lens device 10.Owing to having increased battery of lens L6 between human eye 8 and the first debugging lens device 9, make the light path of originally injecting human eye 8 that change occur, to oculi posterior segment, imaging has become anterior ocular segment imaging.If want to recover the function of oculi posterior segment imaging, only the second debugging lens device 10 that is built-in with battery of lens L6 need to be disassembled.For the convenience of dismounting, the first debugging lens device 9 and second is debugged between lens device 10 as removably connecting.Specific to the present embodiment, the first debugging lens device 9 and the second debugging lens device 10 junctions are provided with the Magnetitum of attracting each other.Because the first debugging lens device 9 is fixed on anterior ocular segment/oculi posterior segment test instrunment (not shown), therefore installing and removing the second debugging lens device 10 just seems very convenient.
Adopt the light channel structure shown in Fig. 2, the technique effect that can be achieved as follows: due to anterior ocular segment (cornea) and oculi posterior segment (optical fundus) structure difference, adopt oculi posterior segment OCT camera lens cannot make light beam focus on respectively in these two positions.Oculi posterior segment OCT camera lens can only focus at oculi posterior segment light beam, but cannot make light beam joint before eyes focus on, this utility model can be realized light beam joint before eyes and oculi posterior segment focusing respectively simply and easily, can realize high-quality imaging for the human eye of different visions, has higher lateral resolution.When needs are realized anterior ocular segment imaging, only need to the second debugging lens device 10 of the first debugging lens device 9 outer end fit ons of object lens L4 with battery of lens L6 be housed, making originally can be to anterior ocular segment imaging to the opticianry computed tomography (SPECT) system of oculi posterior segment imaging, and the primary optical axis that makes incident illumination can keep and the optical axis of object lens is on sustained height, the best angle that when optimization is measured anterior ocular segment, head is placed; If desired realize oculi posterior segment imaging, only the second debugging lens device 10 need be removed.This structural design is compact, can effectively utilize space, and makes the level of comfort in measured's joint test process before eyes reach best.By assembling or dismantle the second debugging lens device 10, can realize the switching that eye is measured and oculi posterior segment is measured anterior ocular segment.
The shape of the first debugging lens device 9 and the second debugging lens device 10 can be for various, but their profile decision design becomes debugging barrel shape cylindraceous, is like this to consider situation about matching with object lens L4, battery of lens L6 profile, and integral body is coordinated more.
With reference to figure 6, further, in order to facilitate detected person can check anterior ocular segment pathological changes under the state of the most comfortable, need to by those who are investigated's eye level be placed on before battery of lens L6, make human eye 8 and battery of lens L6 on same level axle position simultaneously.But accomplish this point, the optical axis of the optical axis of object lens L4 and battery of lens L6 need to be arranged to have certain difference in height d, thereby assurance battery of lens L6 and human eye are at sustained height, see Fig. 2 and Fig. 5.With reference to figure 4, if the photocentre of object lens L4 and battery of lens L6 is at same level height, the incident illumination of finally injecting human eye 8 just there will be the down phenomenon of deviation, when to anterior ocular segment imaging, those who are investigated need to upwards look up certain angle by head, thereby have increased the discomfort of those who are investigated in test process.Moreover, if in same level height, there is the down phenomenon of deviation owing to injecting the incident illumination of human eye in the photocentre between object lens L4 and battery of lens L6, be also unfavorable for battery of lens L6 in space rational layout.
Further, with reference to figure 5, for the size of the difference in height difference d of the photocentre of object lens L4 and the photocentre of battery of lens L6, need to determine according to the incoming position of injecting the incident illumination of object lens L4.
With reference to figure 1, before said illumination path comprise illumination light 1, illumination light condenser lens L1, indication light source 2, pilot light condenser lens L2, filter lens 3, dichroic mirror 4, object lens L4.The preferential illumination light that adopts the scope viewing area that wavelength is 600～800nm of illumination light 1.The continuous light optically focused that illumination light condenser lens Ll sends illumination light 1, and make light source be radiated at uniformly optical fundus.Certainly, also can adopt luminous uniform LED light source to replace illumination light 1.Indication light source 2, when optical fundus is detected, plays the fixedly effect of sight line.The light optically focused that pilot light condenser lens L2 sends indication light source 2, and make pilot light be radiated at uniformly optical fundus.Also can adopt luminous uniform LED light source to replace indication light source 2 and pilot light condenser lens L2.Filter lens 3 is arranged between illumination light condenser lens L1 and dichroic mirror 4, and indication light source 2 and pilot light condenser lens L2 are arranged in the incident position of the reflecting surface of filter lens 3 successively, and filter lens 3 transmission illumination light and reflection pilot light are to dichroic mirror 4.Preferably, what adopt when illumination light 1 is HONGGUANG, and indication light source 2 adopts while being green glow, and filter lens 3 adopts HONGGUANG anti-(penetrating) mirror of (penetrating) green glow thoroughly.If the light source of system adopts near infrared light, dichroic mirror 4 adopts visible ray anti-(penetrating) mirror of (penetrating) infrared light thoroughly.Preferably, between filter lens 3 and dichroic mirror 4, be also provided with relay lens L3.
Human eye, object lens L4, lens L5 and CCD6 have formed fundus imaging light path.In Fig. 2, as 5 expression light, by optical fundus imaging after object lens L4, it is imaged on CCD6 by lens L5 as object space again.Lens L5 arranges in the mode of the angle of state deflection by arranging from axle, the optical axis that this deflection angle makes lens L5 over against this as 5.
The ultimate principle of light path work is as follows.First, when observing optical fundus, light illumination light 1, output illumination light.Light indication light source 2 simultaneously and carry out the fixing of sight line.Illumination light is assembled through illumination light condenser lens L1, then light microscopic 3, relay lens L3 and dichroic mirror 4 after filtration, then focus on and incide optical fundus through object lens L4, illuminate optical fundus.Incide the illumination light on optical fundus in fundus imaging reflection, and the light of reflection passes through object lens L4 imaging again, imaging 5 is through lens L5, finally imaging on CCD6.CCD6 is converted to digital electric signal by the optical image signal receiving, and further generates eye fundus image signal.
With reference to figure 2, different with Fig. 1, in Fig. 2, between object lens L4 and human eye 8, increased battery of lens L6, changed the focal position of incident illumination in light path, the incident illumination that makes to inject human eye 8 can joint imaging before eyes.But the path that incident illumination and reflected light are walked is except increasing battery of lens L6, and front is stated the same.
Further, with reference to figure 1 and Fig. 2, illumination path also comprises the sub-light path of the indication of branch.This indicates sub-light path to comprise indication light source 2 and pilot light condenser lens L2.The light that indication light source 2 sends, after pilot light condenser lens L2 transmission, is injected into the reflecting surface of filter lens 3, after filter lens 3 reflections, successively by relay lens L3, dichroic mirror 4, object lens L4, through battery of lens L6, enters human eye or directly enters human eye.This indicates the effect of sub-light path to be sight line to be fixed.
With reference to figure 1 and Fig. 2, to realize the opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched and also comprise a road light path, that is exactly OCT light path.OCT light path comprises: the calculation control device, OCT system and the scanning means 7 that connect in turn.The light that OCT light path is sent is after scanning scanning means, then through dichroic mirror 4 reflection, reflected light is injected object lens L4, enters oculi posterior segment through object lens L4 transmission is laggard, and in oculi posterior segment imaging; Or joint imaging before eyes after battery of lens L6 again after object lens L4.After anterior ocular segment imaging or oculi posterior segment imaging, reflected light An Yuan road is back to OCT system.Calculation control device is processed the optical information of the anterior ocular segment of human eye or oculi posterior segment information through computer, with image mode, be presented on computer display.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. the opticianry computed tomography (SPECT) system that realization is switched the imaging of anterior ocular segment oculi posterior segment, comprising: OCT light path, illumination path and fundus imaging light path; Described fundus imaging light path comprises object lens, the lens and the photoelectric conversion unit that from axle, arrange; The illumination light of described illumination path focuses on and injects optical fundus through described object lens, after reflection again by described object lens imaging, imaging as object space through described lens imaging on described photoelectric conversion unit, it is characterized in that: described object lens arranged outside have can dismantle, realize anterior ocular segment imaging and battery of lens that oculi posterior segment imaging is switched.
2. a kind of opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched of realizing as claimed in claim 1, it is characterized in that: the photocentre of described battery of lens and the photocentre of described object lens have difference in height, the value of described difference in height is injected the location positioning of described object lens according to incident illumination.
3. a kind of opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched of realizing as claimed in claim 1 or 2, is characterized in that: described object lens are arranged in the first debugging lens device; Described battery of lens is arranged in the second debugging lens device; Described the first debugging lens device and described the second debugging lens device removably connect by magnet.
4. a kind of opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched of realizing as claimed in claim 1, is characterized in that: described illumination path comprises and setting gradually: described illumination light, illumination light condenser lens, filtering element (cartridge) mirror and dichroic mirror; Described illumination light is focused on by described object lens after described dichroic mirror outgoing.
5. a kind of opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched of realizing as claimed in claim 4, is characterized in that: described illumination path also comprises the relay lens being arranged between described illumination light condenser lens and described dichroic mirror.
6. a kind of opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched of realizing as claimed in claim 5, is characterized in that: described illumination path also comprises the sub-light path of indication, and the sub-light path of described indication comprises indication light source and pilot light light source condenser; Described indication light source and pilot light condenser lens are arranged in the incident position of the reflecting surface of filter lens successively.
7. a kind of opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched of realizing as described in right 1, is characterized in that: described illumination light is that wavelength is illumination light or the LED uniform area light source of the scope viewing area of 600～800nm.
8. a kind of opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched of realizing as claimed in claim 7, is characterized in that: when described illumination light is HONGGUANG, when described indication light source is green glow, described filter lens is HONGGUANG transmit green reflecting mirror.
9. a kind of as described in right 1 realizes the opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched, it is characterized in that: described OCT light path comprises calculation control device, OCT system and the scanning means connecting in turn, the light that described OCT system is sent is after scanning scanning means, again through described dichroic mirror reflects to described object lens, after described object lens transmission, enter human eye, then be back to OCT system by the former road of human eye.
10. as claim 1, a kind of opticianry computed tomography (SPECT) system that the imaging of anterior ocular segment oculi posterior segment is switched of realizing in 2,4-9 described in any one, is characterized in that: described battery of lens is the combination of single lens or a plurality of lens.
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| CN201420065163.3U CN203709994U (en) | 2014-02-14 | 2014-02-14 | Ophthalmic optics tomography system for realizing switching between anterior segment imaging and posterior segment imaging |
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| CN201420065163.3U CN203709994U (en) | 2014-02-14 | 2014-02-14 | Ophthalmic optics tomography system for realizing switching between anterior segment imaging and posterior segment imaging |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108784645A (en) * | 2018-07-18 | 2018-11-13 | 视微影像(河南)科技有限公司 | A kind of switching device of optics microscope group |
| CN111643050A (en) * | 2020-06-10 | 2020-09-11 | 苏州比格威医疗科技有限公司 | Ophthalmic optical imaging system |
-
2014
- 2014-02-14 CN CN201420065163.3U patent/CN203709994U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108784645A (en) * | 2018-07-18 | 2018-11-13 | 视微影像(河南)科技有限公司 | A kind of switching device of optics microscope group |
| CN108784645B (en) * | 2018-07-18 | 2020-06-23 | 视微影像(河南)科技有限公司 | Switching device of optical lens group |
| CN111643050A (en) * | 2020-06-10 | 2020-09-11 | 苏州比格威医疗科技有限公司 | Ophthalmic optical imaging system |
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