CN203354522U - Human eye optic test model - Google Patents
Human eye optic test model Download PDFInfo
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- CN203354522U CN203354522U CN 201320308146 CN201320308146U CN203354522U CN 203354522 U CN203354522 U CN 203354522U CN 201320308146 CN201320308146 CN 201320308146 CN 201320308146 U CN201320308146 U CN 201320308146U CN 203354522 U CN203354522 U CN 203354522U
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Abstract
The utility model discloses a human eye optic test model. The human eye optic test model comprises a cornea lens suite, a pupil, a crystalline lens suite, transparent liquid, an eye ground test target and a cylindrical shell; furthermore, the eye ground test target can be a resolution ratio test target and a layered structure test target. The human eye optic test model is of the optical structure of a human eye, the human eye optic test model accords with aniaometropia of the human eye, two kinds of test targets are arranged at the eye ground, and as for am eye ground camera and other single-layer imaging equipment, the resolution ratio test target can be adopted to detect the maximum resolution which can be reached by a system. As for an eye ground confocal scanning imager, an eye ground optical coherent chromatography imager and other imaging equipment used for imaging of retina deep information, the layered structure test target is adopted and can show the longitudinal cutting structure of the imaging equipment, and therefore the longitudinal resolution ratio and the transverse resolution ratio of the imaging equipment in tissue are detected and evaluated.
Description
Technical field
This utility model relates to opthalmic optics's test model, relates in particular to a kind of test model of the opthalmic optics for fundus imaging.
Background technology
The model of the simulation human eye existed in the market is divided into two classes substantially: a class is the anatomical model of eyeball, in detail lively displaying comprise the form on cornea, iris, crystalline lens, optical fundus etc., being mainly used in biology or medical teaching uses, understand the physiological structure of eyes for the student, do not possess optical property; Another kind of human-eye model, there is certain optical parametric, be mainly used in making the student to understand the image-forming principle of eyes in teaching, or practise using ophthalmoscope etc. directly to observe the instrument and equipment of eyes for the ophthalmology intern, can not observe the amphiblestroid longitudinal cutting structure in optical fundus with optical detecting method, and not possess quantitative function.
For optical fundus optical coherent chromatographic imaging instrument OCT and optical fundus confocal scanning imager CSLO etc. to fundus imaging to detect the fundus imaging equipment on optical fundus, the current domestic unified standard testing model in industry that do not have, for evaluating the imaging performance parameter of these equipment.
The utility model content
The problem existed for solving existing model, this utility model provides a kind of opthalmic optics's test model, and this model possesses the optical texture of human eye, the dioptric parameter that meets human eye, and be equipped with two kinds of test targets in the position, optical fundus, and can replace human eye, accurately detect the imaging performance parameter of imaging device.
The purpose of this utility model is to provide a kind of test model of the opthalmic optics for fundus imaging.
Opthalmic optics for fundus imaging test model of the present utility model comprises: corneal lens external member, pupil, lens external member, transparency liquid, optical fundus test target and tubular shell; Wherein, test target in optical fundus is arranged on the bottom of tubular shell; The corneal lens external member arranges the top of tubular shell and by its sealing; Pupil is positioned at the inner surface of corneal lens external member; The lens external member be arranged on pupil inner surface and and optical fundus test target between distance be an image-forming range; Be full of transparency liquid in tubular shell; The effective focal length that image-forming range is the common lens that form of lens external member, corneal lens external member and transparency liquid; Further, test target in optical fundus is divided into two kinds: resolution test target and hierarchy test target.
The corneal lens external member is equivalent to the cornea of human eye, further comprises corneal lens and corneal lens carriage, and corneal lens is positioned at the central authorities of corneal lens carriage.
Pupil is equivalent to the pupil of human eye, and the center of pupil is provided with through hole, and remainder is lighttight, thereby light enters model by through hole.The diameter of through hole is between 3～8mm.The material of pupil adopts lighttight material, or comprises lighttight material at its outer surface.
The lens external member is equivalent to the crystalline lens of human eye, further comprises crystalline lens carriage and lens, and lens is positioned at the central authorities of crystalline lens carriage.
Transparency liquid is the material close with the refractive index of aqueous humor, as pure water, normal saline or artificial vitreous etc.
Except the through hole of pupil, other parts of opthalmic optics's test model are lighttight.Can adopt pupil and cylindrical case is lighttight material, or other parts except through hole are wrapped up with lighttight material.
Optical fundus test target is equivalent to the retina of human eye, adopts resolution test target or hierarchy test target.The resolution test target is for to be provided with test chart at the bottom of opaque target, and test chart adopts the optical resolution test chart of standard, as 1951USAF(just), NBS1963A(just).For the imaging device of the monolayers such as fundus camera, adopt the resolution test target, by imaging device, model is carried out to imaging, can the accessible ultimate resolution of detection system.Hierarchy test target material adopts macromolecular material, as silicone elastomer (silicone elastomer) and acrylic PMMA etc.; The multilamellar that comprises even thickness, the thickness of every one deck is between 30～120 μ m.Every one deck in hierarchy test target has different refractive indexs, and its absorptance and scattering coefficient approach amphiblestroid optical parametric.Be mixed with the nanoparticle of known dimensions in hierarchy test target, be equivalent in retina the not homogeneous structure as blood vessel etc.; The material of nanoparticle can be TiO
2, SiO
2, or golden nanometer particle; The size of nanoparticle is between 200～500nm.Imaging device for optical fundus confocal scanning imager and optical fundus optical coherent chromatographic imaging instrument etc. to the imaging of retina the deep information, adopt hierarchy test target, imaging device carries out imaging to model, can present its longitudinal cutting structure, thus longitudinal resolution and the lateral resolution of detecting and assessing imaging device in tissue.
Opthalmic optics's test model of the present utility model, can replace human eye, is used for detecting the imaging performance parameter of fundus imaging equipment, and imaging device is to the model imaging, and the readability by judging imaging is to detect the imaging performance parameter of these imaging devices.Advantage of the present utility model:
This utility model provides a kind of opthalmic optics's test model, this model possesses the optical texture of human eye, the dioptric parameter that meets human eye, and at two kinds of optical fundus test targets of position, optical fundus outfit, resolution test target and hierarchy test target, be respectively used to its longitudinal resolution and lateral resolution in tissue of the accessible ultimate resolution of detection system and detecting and assessing.
The accompanying drawing explanation
The structural representation that Fig. 1 is Gullstrand-Le Grand schematic eye;
The profile that Fig. 2 is the test model of the opthalmic optics for fundus imaging of the present utility model;
The structural representation of the resolution test target of the embodiment that Fig. 3 is the test model of the opthalmic optics for fundus imaging of the present utility model, wherein (a) is the front view of resolution test target, (b) is the enlarged drawing of test chart;
The profile of the hierarchy test target of the embodiment that Fig. 4 is the test model of the opthalmic optics for fundus imaging of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, by embodiment, this utility model is described further.
The structural representation that Fig. 1 is Gullstrand-Le Grand schematic eye, as shown in Figure 1, human eye comprises cornea 01, aqueous humor 031, pupil, crystalline lens 02, vitreous body 032 and retina 04, each structure parameter of this schematic eye is as following table:
As shown in Figure 2, according to the schematic eye of above-mentioned human eye, opthalmic optics's test model of the present embodiment comprises: corneal lens external member 1, pupil 2, lens external member 3, transparency liquid, optical fundus test target 4 and tubular shell 5; Wherein, test target 4 in optical fundus is arranged on the bottom of tubular shell 5; Corneal lens external member 1 arranges the top of tubular shell 5 and by its sealing; Pupil 2 is positioned at the inner surface of corneal lens external member 1; Lens external member 3 be arranged on pupil 2 inner surface and and optical fundus test target 4 between distance be an image-forming range.Further, corneal lens external member 1 comprises corneal lens 11 and corneal lens carriage 12, and corneal lens 11 is fixed on the central authorities of corneal lens carriage 12 by pressure ring 13, between corneal lens external member 1 and tubular shell, by sealing ring 14, seals.The center of pupil 2 is provided with through hole, and remainder is lighttight, and for the imaging device that needs mydriasis, the diameter of pupil can reach 8mm, and for the imaging device of exempting from mydriasis, the diameter of pupil is 3～4mm.Lens external member 3 comprises crystalline lens carriage 32 and lens 31, and lens 31 is fixed on the central authorities of crystalline lens carriage 32 by pressure ring 33.
In the present embodiment, design parameter is: lens all adopt MgF
2the planoconvex lens of plated film, corneal lens 11 diameter 12.0mm wherein, focal length 24.0mm; Lens 31 diameter 15.0mm, focal length 22.5mm; Transparency liquid adopts pure water.
As shown in Fig. 3 (a), the resolution test target is to be provided with test chart at the bottom of opaque target, and as shown in Figure 3 (b), the 1951USAF(of test chart employing standard is just) the optical resolution test chart.
As shown in Figure 4, hierarchy test target comprise thickness all and four layers, the thickness of every one deck is 50～60 μ m, gross thickness is at 200～240 μ m, this is amphiblestroid approximate thickness.Material adopts silicone elastomer (silicone elastomer).Every one deck in hierarchy test target has different refractive indexs, tests and joins as required, and the scope of refractive index is between 1.41～1.49, and its absorptance and scattering coefficient approach amphiblestroid optical parametric.Be mixed with the nanoparticle of known dimensions in hierarchy test target, between the size 200～500nm of nanoparticle.
Resolution test target and hierarchy test target, be respectively used to its longitudinal resolution and lateral resolution in tissue of the accessible ultimate resolution of detection system and detecting and assessing, and resolution reaches micron dimension.
Finally it should be noted that, the purpose of publicizing and implementing mode is to help further to understand this utility model, but it will be appreciated by those skilled in the art that: in the spirit and scope that do not break away from this utility model and appended claim, various substitutions and modifications are all possible.Therefore, this utility model should not be limited to the disclosed content of embodiment, and the scope that the claimed scope of this utility model defines with claims is as the criterion.
Claims (10)
1. opthalmic optics's test model, opthalmic optics's test model for the imaging performance parameter for evaluating fundus imaging equipment, it is characterized in that, described opthalmic optics's test model comprises: corneal lens external member (1), pupil (2), lens external member (3), transparency liquid, optical fundus test target (4) and tubular shell (5); Wherein, described optical fundus test target (4) is arranged on the bottom of tubular shell (5); Described corneal lens external member (1) is arranged on the top of tubular shell (5) and by its sealing; Described pupil (2) is positioned at the inner surface of corneal lens external member (1); Described lens external member (3) be arranged on pupil (2) inner surface and and optical fundus test target (4) between distance be an image-forming range; Be full of transparency liquid in described tubular shell (5); The effective focal length that described image-forming range is the common lens that form of lens external member (3), corneal lens external member (1) and transparency liquid; Further, described optical fundus test target (4) is divided into two kinds: resolution test target and hierarchy test target.
2. opthalmic optics's test model as claimed in claim 1, it is characterized in that, described corneal lens external member (1) further comprises corneal lens (11) and corneal lens carriage (12), and described corneal lens (11) is positioned at the central authorities of corneal lens carriage (12).
3. opthalmic optics's test model as claimed in claim 1, is characterized in that, the center of described pupil (2) is provided with through hole, and remainder is lighttight, and the diameter of through hole is between 3～8mm.
4. opthalmic optics's test model as claimed in claim 1, it is characterized in that, described lens external member (3) further comprises crystalline lens carriage (32) and lens (31), and described lens (31) is positioned at the central authorities of crystalline lens carriage (32).
5. opthalmic optics's test model as claimed in claim 1, is characterized in that, described transparency liquid is the material close with the refractive index of aqueous humor.
6. opthalmic optics's test model as claimed in claim 1, it is characterized in that, except the through hole of pupil (2), other parts of described opthalmic optics's test model are lighttight, the material of pupil (2) and cylindrical case is lighttight material, or other parts except through hole are by lighttight material parcel.
7. opthalmic optics's test model as claimed in claim 1, is characterized in that, described resolution test target is for to be provided with test chart at the bottom of opaque target, the optical resolution test chart that test chart is standard.
8. opthalmic optics's test model as claimed in claim 1, is characterized in that, the material of described hierarchy test target is macromolecular material; The multilamellar that comprises even thickness, the thickness of every one deck is between 30～120 μ m.
9. opthalmic optics's test model as claimed in claim 8, is characterized in that, the every one deck in described hierarchy test target has different refractive indexs, and its absorptance and scattering coefficient approach amphiblestroid optical parametric.
10. opthalmic optics's test model as claimed in claim 1, is characterized in that, comprises the nanoparticle of known dimensions in described hierarchy test target, and the material of nanoparticle is TiO
2, SiO
2, one or more in gold nano grain; Size is between 200～500nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320308146 CN203354522U (en) | 2013-05-31 | 2013-05-31 | Human eye optic test model |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320308146 CN203354522U (en) | 2013-05-31 | 2013-05-31 | Human eye optic test model |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103315703A (en) * | 2013-05-31 | 2013-09-25 | 北京大学 | Human eye optical test model for fundus imaging |
| WO2018161386A1 (en) * | 2017-03-09 | 2018-09-13 | 广州永士达医疗科技有限责任公司 | Device for evaluating imaging performance of oct apparatus, and method for using same |
| CN109613634A (en) * | 2018-12-29 | 2019-04-12 | 东南大学 | A kind of simulation human eye pupil regulating system and its control method |
| US20200288117A1 (en) * | 2019-03-04 | 2020-09-10 | Nikon Corporation | Resolution test chart and artificial eye for assessing fundus imaging systems |
-
2013
- 2013-05-31 CN CN 201320308146 patent/CN203354522U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103315703A (en) * | 2013-05-31 | 2013-09-25 | 北京大学 | Human eye optical test model for fundus imaging |
| CN103315703B (en) * | 2013-05-31 | 2015-08-12 | 北京大学 | A kind of opthalmic optics's test model for fundus imaging |
| WO2018161386A1 (en) * | 2017-03-09 | 2018-09-13 | 广州永士达医疗科技有限责任公司 | Device for evaluating imaging performance of oct apparatus, and method for using same |
| CN109613634A (en) * | 2018-12-29 | 2019-04-12 | 东南大学 | A kind of simulation human eye pupil regulating system and its control method |
| US20200288117A1 (en) * | 2019-03-04 | 2020-09-10 | Nikon Corporation | Resolution test chart and artificial eye for assessing fundus imaging systems |
| US11652981B2 (en) * | 2019-03-04 | 2023-05-16 | Nikon Corporation | Resolution test chart and artificial eye for assessing fundus imaging systems |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20160531 |