CN106580246B - A kind of funduscopy device, its manufacturing method and use its imaging method - Google Patents
A kind of funduscopy device, its manufacturing method and use its imaging method Download PDFInfo
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- 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
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Abstract
The present invention provides a kind of funduscopy devices, including：Mounting bracket；Object lens are set on mounting bracket and are arranged close to eyeball to be seen, and object lens are lenticular convex lens, object lens are first convex plane of refraction close to the face of eyeball to be seen, object lens are second convex plane of refraction away from the face of eyeball to be seen, to amplify eyeball to be seen, to amplify eyeball to be seen；And field lens, it is set on mounting bracket and is set to the side that object lens deviate from eyeball to be seen, field lens is cancavo-convex convex lens, field lens is the recessed plane of refraction of object close to the face of object lens, field lens is the convex plane of refraction of object away from the face of object lens, and the recessed refraction of object is bent towards object lens direction, to shorten focal length；Wherein, first convex plane of refraction, second convex plane of refraction, the convex plane of refraction of object and the recessed plane of refraction of object are non-spherical structure.Beneficial effects of the present invention：Not only observation visual angle range had been extended, but also has improved the quality for observing image.
Description
Technical field
The present invention relates to ophthalmologic operation devices, and in particular to a kind of funduscopy device, its manufacturing method and uses it
Imaging method.
Background technology
Oculi posterior segment perform the operation, especially in vitrectomy, operative doctor need accurately through cornea, pupil,
The tissues such as crystalline lens clearly observe the posterior retina on eyeground.The common apparatus of ophthalmologic operation, surgical operation microscope are logical
It often is only used for anterior ocular segment microsurgery, such as：The prosthomeres such as cornea and cataract operation etc..So supplement must be passed through
Inspection system tested eyeground region could be observed by microscope with surgical operation microscope joint imaging.It is public in United States Patent (USP)
A kind of ophthalmic operating microscope system that document number is US2009/279052A1 is opened, since magnifying glass and type minifier are ball
Face structure and lead to have aberration, therefore the image definition observed is weaker, can not see true structure, causes to perform the operation
Person can not can be clearly seen that the structure that eyeground structure is just looked at also has deformation, cause operator between structure size, structure
The making a mistake in judgment such as distance, need the operation of position to make troubles to being found in operation, and then surgical effect is caused to reduce.
Invention content
The present invention provides a kind of funduscopy device, its manufacturing method and its imaging method is used, solves existing skill
Lead to have the problem of aberration because using magnifying glass and type minifier to be spheric structure in art.
To achieve the above object, present invention employs the following technical solutions：
A kind of funduscopy device, including：
Mounting bracket；
Object lens are set on mounting bracket and are arranged close to eyeball to be seen, and object lens are lenticular convex lens, and object lens lean on
The face of nearly eyeball to be seen is first convex plane of refraction, and object lens are second convex plane of refraction away from the face of eyeball to be seen, to put
Big eyeball to be seen；And
Field lens, is set on mounting bracket and is set to the side that object lens deviate from eyeball to be seen, and field lens is cancavo-convex
Convex lens, field lens close to the face of object lens be the recessed plane of refraction of object, field lens away from object lens face be the convex plane of refraction of object, object it is recessed refraction towards
Object lens direction is bent, to shorten focal length；
Wherein, first convex plane of refraction, second convex plane of refraction, the convex plane of refraction of object and the recessed plane of refraction of object are aspherical
Structure.
Preferably, the focal range of the object lens is：850mm~1150mm；
The focal range of the field lens is：8mm~15mm；
Spacing range is between the object lens and field lens：120mm~160mm.
Preferably, the value range of the minimum thickness of object lens is：9.78mm to 16.33mm；
The value range of the focal length of first convex plane of refraction is：9.15mm to 15.93mm；
The value range of the focal length of second convex plane of refraction is：118.207mm to 185.174mm.
Preferably, the refractive index of object lens is equal to 1.192, and Abbe number is equal to 49.440791；
The formula of first convex plane of refraction is：
In formula, X1For the radial distance of first convex plane of refraction, Y1For the vertical range of first convex plane of refraction, coefficient a1
Value range be：- 0.0001 to -0.0007, coefficient b1Value range be：1.4761014*10-6To 7.5000000*10-6, coefficient e1Value range be：-1.1264882*10-9To -8.1000000*10-9, coefficient d1Value range be：-
0.8755397*10-10To -3.8755397*10-10, C1For the inverse of base radius, value range is：ExtremelyConstant of the cone K1Value range be：- 0.812968~-2.812968；Preferably, a1=-
0.00033914087, b1=3.4761014*10-6, e1=-3.6264882*10-9, d1=-1.4755397*10-10,K1=-0.922968；
The formula of second convex plane of refraction is：
In formula, X2For the radial distance of second convex plane of refraction, Y2For the vertical range of second convex plane of refraction, coefficient a2
Value range be：-0.83000000*10-6To -3.2100000*10-6, coefficient b2Value range be：-0.9736000*
10-9To -2.7372000*10-9, coefficient e2Value range be：2.3313300*10-11To 5.7822133*10-11, coefficient d2
Value range be：-1.3313300*10-12To 1.53217511*10-12, C2For the inverse of base radius, value range is：ExtremelyConstant of the cone K2Value range be：- 0.4122346 to -0.9802233；Preferably, a2
=-1.4728644*10-6, b2=-1.7336099*10-9, e2=3.6078133*10-11, d2=0.2335289*10-12,K2=-0.6701225.
Preferably, the value range of the minimum thickness of field lens is：1.84mm to 4.78mm；
The value range of the focal length of the recessed plane of refraction of object is：1.34mm to 4.92mm；
The value range of the focal length of the convex plane of refraction of object is：19.63mm to 45.62mm.
Preferably, the refractive index of field lens is equal to 1.585, and Abbe number is equal to 29.90000；
The formula of the recessed plane of refraction of object is：
In formula, X3For the radial distance of the recessed plane of refraction of object, Y3For the vertical range of the recessed plane of refraction of object, coefficient a3Value model
Enclose for：0.8963241*10-6To 2.9356247*10-6, coefficient b3Value range be：-3.2597623*10-8To-
0.6321846*10-8, coefficient e3Value range be：2.1057946*10-12To 9.2356794*10-12, coefficient d3Value
Ranging from：-8.43157*10-15To -2.64572*10-15, C3For the inverse of base radius, value range is：ExtremelyConstant of the cone K3Value range be：- 172.5894 to -114.5007；Preferably, a3=
1.6767963*10-6, b3=-1.7942319*10-8, e3=5.5102419*10-12, d3=-5.29404*10-15,K3=-137.5483；
The formula of the convex plane of refraction of object is：
In formula, X4For the radial distance of the convex plane of refraction of object, Y4For the vertical range of the convex plane of refraction of object, coefficient a4Value model
Enclose for：1.3784521*10-6To 6.2897613*10-6, coefficient b4Value range be：-5.0279451*10-8To-
0.8467912*10-8, coefficient e4Value range be：0.5379154*10-11To 3.5479125*10-11, coefficient d4Value
Ranging from：-9.4157201*10-15To -4.0579561*10-15, C4For the inverse of base radius, value range is：
ExtremelyConstant of the cone K4Value range be：- 51.07431 to -22.47211；Preferably, a4=
3.5516848*10-6, b4=-2.1451818*10-8, e4=1.9764215*10-11, d4=-6.5634435*10-15,K4=-31.62963；
In order to realize the funduscopy device, in order to use in performing the operation, it is preferred that the mounting bracket includes：
Field fixed part, object lens are installed on a fixed part；
Object fixed part, field lens are installed on object fixed part；
Fixed frame, the fixing end of fixed frame is for being installed on microscope stand, erecting bed successively on the free end of fixed frame
Fixed part and object fixed part.
The present invention also provides a kind of imaging methods using above-mentioned funduscopy device, use above-mentioned funduscopy device
Close to eyeball to be seen, observing eye bottom.
Preferably, first convex plane of refraction of funduscopy device distance between observing eyeball is 1mm~3mm.
The present invention also provides a kind of production methods of above-mentioned funduscopy device, include the following steps：
Step 1: being made to field lens green body and object lens green body by Shooting Technique using plastic material；
Step 2: carrying out plated film on the surface of field lens green body and the surface of object lens green body, field lens and object lens are obtained.
Compared with the prior art, the present invention has the advantages that：
1) by the way that object lens are arranged, observation visual angle range is extended；By the way that field lens is arranged, focal length is shortened, due to the use of person
Distance is limited between eyeground to be seen, and the shortening to of focal length obtains real image when user observing eye bottom and provide condition, avoids
Phenomena such as imaging distortion being caused because the virtual image is provided, and then improve the quality for observing image；
2) in the imaging method using the funduscopy device, first convex plane of refraction of setting funduscopy device arrives
Distance is 1mm~3mm between observing eyeball, avoids the object lens used in the prior art that from must being put into as using contact lenses
In eyes to be seen, so avoid because object lens must be placed into eyes to be seen cause generate glasses allergy phenomena such as, simultaneously
Make it possible to be clearly apparent eyeground structure by the setting of the object distance；
3) it due to the material expensive that existing product uses, needs to sterilize use repeatedly, and autoclave sterilization is led repeatedly
Cause is unable to plated film, influence optical property can make field lens in the production method of the funduscopy device using plastic material
And object lens, reduce cost, disposable for the product provides condition, it is no longer necessary to it sterilizes repeatedly, thus the making
Plated film is also carried out in method on the surface of field lens and object lens, considerably increases the transmitance of system, improves optical property.
Description of the drawings
Fig. 1 is imaging system figure in funduscopy device；
Fig. 2 is the structural schematic diagram of funduscopy device；
Fig. 3 is MTF curve figure when only having single object lens in the prior art；
Fig. 4 is the MTF curve figure of the funduscopy device of embodiment 1；
Fig. 5 is the MTF curve figure of the funduscopy device of embodiment 2；
Fig. 6 is the MTF curve figure of the funduscopy device of embodiment 3；
Fig. 7 is the imaging system figure of the funduscopy device of embodiment 4；
Fig. 8 is the MTF curve figure of the funduscopy device of embodiment 4；
Fig. 9 is the spectrogram of the field lens or object lens that are obtained using the production method of the funduscopy device of embodiment 7.
Specific implementation mode
Embodiment 1 is to embodiment 3：
As shown in Figure 1, a kind of funduscopy device is proposed in the present embodiment group, including：
Mounting bracket (Fig. 1 does not show)；
Object lens 1 are set on mounting bracket and are arranged close to eyeball 3 to be seen, and object lens 1 are lenticular convex lens, object
Mirror 1 is first convex plane of refraction 11 close to the face of eyeball 3 to be seen, and object lens 1 are second convex folding away from the face of eyeball 3 to be seen
Face 12 is penetrated, to amplify eyeball 3 to be seen；And
Field lens 2, is set on mounting bracket and is set to the side that object lens 1 deviate from eyeball 3 to be seen, and field lens 2 is bumps
The convex lens of shape, field lens 2 are the recessed plane of refraction 21 of object close to the face of object lens 1, and field lens 2 is the convex plane of refraction 22 of object away from the face of object lens 1,
The recessed plane of refraction 21 of object is bent to 1 direction of object lens, to shorten focal length；
Wherein, first convex plane of refraction, 11, second convex planes of refraction 12, the convex plane of refraction 22 of object and the recessed plane of refraction 21 of object are equal
For non-spherical structure.Amplified by the way that object lens 1 are arranged, the details on eyeground can be amplified, to observe；Simultaneously by the way that field lens is arranged
2, the light of amplified image is converged after field lens 2, to shorten focal length, and then improves image quality, mounting bracket
Setting field lens 2 and object lens 1 are installed, convenient for user use.
In order to be amplified to eyeground by object lens 1, the focal range of the object lens 1 is：850mm~1150mm；Simultaneously
In order to shorten focal length, the focal range of the field lens 2 is：8mm~15mm；Spacing range is between the object lens 1 and field lens 2：
120mm~160mm.Since the focal range of object lens 1 is：850mm~1150mm is observed to be seen using the funduscopy device
When eyeball 3, it is amplified due to treat observation eyeball 3, the distance between object lens 1 and eyeball 3 to be seen are much larger than object
The focal length of mirror 1 can form upright, amplification a virtual image according to convex lens imaging principle by object lens 1；Due to the object lens 1
Spacing range is between field lens 2：120mm~160mm, therefore space is further dissipated to the light of the virtual image formed, with
The picture of a diminution is obtained when avoiding field lens 2 from shortening focal length instead；Since the focal range of the field lens 2 is：8mm~
15mm so that focal length becomes smaller, while if field lens 2 arrives the distance between object and pressed without object lens 1 much larger than 2 times of focal lengths of field lens 2
According to normal convex lens it is original for, the real image that can be stood upside down, be reduced, but pass through object lens 1 and field lens 2 while make
With real image that is rear, being stood upside down, be amplified, and image imaging clearly.
In order to realize that " focal range of object lens 1 is：850mm~1150mm ", the value range of the minimum thickness of object lens 1
For：9.78mm to 16.33mm；The value range of the focal length of first convex plane of refraction 11 is：9.15mm to 15.93mm；Second
The value range of the focal length of convex plane of refraction 12 is：118.207mm to 185.174mm.The focal length of object lens 1 by object lens 1 thickness,
The focal length of one convex plane of refraction 11 and second convex plane of refraction 12 determines, therefore passes through the thickness of object lens 1, first convex refraction
The setting of the focal length of face 11 and second convex plane of refraction 12, is achieved that the setting of the focal length to object lens 1.
In order to realize that " value range of the focal length of first convex plane of refraction 11 is：9.15mm to 15.93mm；Second convex
The value range of the focal length of plane of refraction 12 is：The refractive index of 118.207mm to 185.174mm ", object lens 1 are equal to 1.192, Abbe
Coefficient is equal to 49.440791；
The formula of first convex plane of refraction 11 is：
In formula, X1For the radial distance of first convex plane of refraction 11, Y1For the vertical range of first convex plane of refraction 11, it is
Number a1Value range be：- 0.0001 to -0.0007, coefficient b1Value range be：1.4761014*10-6Extremely
7.5000000*10-6, coefficient e1Value range be：-1.1264882*10-9To -8.1000000*10-9, coefficient d1Value
Ranging from：-0.8755397*10-10To -3.8755397*10-10, C1For the inverse of base radius, value range is：ExtremelyConstant of the cone K1Value range be：- 0.812968~-2.812968；Preferably, a1
=-0.00033914087, b1=3.4761014*10-6, e1=-3.6264882*10-9, d1=-1.4755397*10-10,K1=-0.922968；
The formula of second convex plane of refraction 12 is：
In formula, X2For the radial distance of second convex plane of refraction 12, Y2For the vertical range of second convex plane of refraction 12, it is
Number a2Value range be：-0.83000000*10-6To -3.2100000*10-6, coefficient b2Value range be：-
0.9736000*10-9To -2.7372000*10-9, coefficient e2Value range be：2.3313300*10-11To 5.7822133*
10-11, coefficient d2Value range be：-1.3313300*10-12To 1.53217511*10-12, C2For the inverse of base radius, take
Value is ranging from：ExtremelyConstant of the cone K2Value range be：- 0.4122346 to -0.9802233；It is excellent
Choosing, a2=-1.4728644*10-6, b2=-1.7336099*10-9, e2=3.6078133*10-11, d2=0.2335289*
10-12,K2=-0.6701225.Due to first convex plane of refraction 11 focal length by object lens 1 refractive index
Determine that the focal length of second convex plane of refraction 12 is by the refractive index of object lens 1 and second with the curve form of first convex plane of refraction 11
The curve form of convex plane of refraction 12 determines, therefore is set to the refractive index of object lens 1, the curved surface of first convex plane of refraction 11
The curve form of shape and second convex plane of refraction 12 set, to obtain needing first convex plane of refraction 11 of focal length
With second convex plane of refraction 12.
In order to realize that " focal range of field lens 2 is：The value range of 8mm~15mm ", the minimum thickness of field lens 2 is：
1.84mm to 4.78mm；The value range of the focal length of the recessed plane of refraction of object 21 is：1.34mm to 4.92mm；The coke of the convex plane of refraction of object 22
Away from value range be：19.63mm to 45.62mm.The focal length of field lens 2 is convex by the recessed plane of refraction 21 of thickness, object and object of field lens 2
The focal length of plane of refraction 22 determines, therefore setting by the focal length of the thickness of field lens 2, the recessed plane of refraction 21 of object and the convex plane of refraction of object 22
It is fixed, it is achieved that the setting of the focal length to field lens 2.
In order to realize that " value range of the focal length of the recessed plane of refraction of object 21 is：1.34mm to 4.92mm；The convex plane of refraction of object 22
The value range of focal length is：The refractive index of 19.63mm to 45.62mm ", field lens 2 are equal to 1.585, and Abbe number is equal to
29.90000；
The formula of the recessed plane of refraction of object 21 is：
In formula, X3For the radial distance of the recessed plane of refraction of object 21, Y3For the vertical range of the recessed plane of refraction of object 21, coefficient a3Take
Value is ranging from：0.8963241*10-6To 2.9356247*10-6, coefficient b3Value range be：-3.2597623*10-8To-
0.6321846*10-8, coefficient e3Value range be：2.1057946*10-12To 9.2356794*10-12, coefficient d3Value
Ranging from：-8.43157*10-15To -2.64572*10-15, C3For the inverse of base radius, value range is：ExtremelyConstant of the cone K3Value range be：- 172.5894 to -114.5007；Preferably, a3=
1.6767963*10-6, b3=-1.7942319*10-8, e3=5.5102419*10-12, d3=-5.29404*10-15,K3=-137.5483；
The formula of the convex plane of refraction of object 22 is：
In formula, X4For the radial distance of the convex plane of refraction of object 22, Y4For the vertical range of the convex plane of refraction of object 22, coefficient a4Take
Value is ranging from：1.3784521*10-6To 6.2897613*10-6, coefficient b4Value range be：-5.0279451*10-8To-
0.8467912*10-8, coefficient e4Value range be：0.5379154*10-11To 3.5479125*10-11, coefficient d4Value
Ranging from：-9.4157201*10-15To -4.0579561*10-15, C4For the inverse of base radius, value range is：
ExtremelyConstant of the cone K4Value range be：- 51.07431 to -22.47211；Preferably, a4=
3.5516848*10-6, b4=-2.1451818*10-8, e4=1.9764215*10-11, d4=-6.5634435*10-15,K4=-31.62963.Due to the recessed plane of refraction of object 21 focal length by field lens 2 the recessed folding of refractive index and object
The curve form for penetrating face 21 determines, the focal length of the convex plane of refraction of object 22 by field lens 2 the convex plane of refraction of refractive index and object 22 curved
Shape determines, therefore is set to the refractive index of field lens 2, the song of the curve form of the recessed plane of refraction of object 21 and the convex plane of refraction of object 22
Face shape set, to obtain needing the recessed plane of refraction 21 of the object of focal length and the convex plane of refraction of object 22.
To embodiment in following table 1, embodiment 2 and embodiment 3 represent funduscopy device by fluorescence detector into
Row quality of optical imaging detects,
Specifically, in embodiment 1, the aspherical parameter of first convex plane of refraction 11：a1=-0.0001, b1=
1.4761014*10-6, e1=-1.1264882*10-9, d1=-0.8755397*10-10,K1=-
0.812968；The aspherical parameter of second convex plane of refraction 12：a2=-0.83000000*10-6, b2=-0.9736000*10-9,
e2=2.3313300*10-11, d2=-1.3313300*10-12,K2=-0.4122346；The recessed refraction of object
The aspherical parameter in face 21：a3=0.8963241*10-6, b3=-3.2597623*10-8, e3=2.1057946*10-12, d3=-
8.43157*10-15,K3=-172.5894；The aspherical parameter of the convex plane of refraction of object 22：a4=
1.3784521*10-6, b4=-5.0279451*10-8, e4=0.5379154*10-11, d4=-9.4157201*10-15,K4=-51.07431.
In embodiment 2, the aspherical parameter of first convex plane of refraction 11：a1=-0.00033914087, b1=
3.4761014*10-6, e1=-3.6264882*10-9, d1=-1.4755397*10-10,K1=-
0.922968；The aspherical parameter of second convex plane of refraction 12：a2=-1.4728644*10-6, b2=-1.7336099*10-9,
e2=3.6078133*10-11, d2=0.2335289*10-12,K2=-0.6701225；The recessed refraction of object
The aspherical parameter in face 21：a3=1.6767963*10-6, b3=-1.7942319*10-8, e3=5.5102419*10-12, d3=-
5.29404*10-15,K3=-137.5483；The aspherical parameter of the convex plane of refraction of object 22：a4=
3.5516848*10-6, b4=-2.1451818*10-8, e4=1.9764215*10-11, d4=-6.5634435*10-15,K4=-31.62963.
In embodiment 3, the aspherical parameter of first convex plane of refraction 11：a1=-0.0007, b1=7.5000000*10-6,
e1=-8.1000000*10-9, d1=-3.8755397*10-10,K1=-2.812968；Second convex
The aspherical parameter of plane of refraction 12：a2=-3.2100000*10-6, b2=-2.7372000*10-9, e2=5.7822133*10-11, d2=1.53217511*10-12,K2=-0.9802233；The aspherical ginseng of the recessed plane of refraction of object 21
Number：a3=2.9356247*10-6, b3=-0.6321846*10-8, e3=9.2356794*10-12, d3=-2.64572*10-15,K3=-114.5007；The aspherical parameter of the convex plane of refraction of object 22：a4=6.2897613*10-6, b4
=-0.8467912*10-8, e4=3.5479125*10-11, d4=-4.0579561*10-15,K4
=-22.47211.
By the MTF of the prior art of the MTF curve figure of embodiment shown in fig. 4 to fig. 61 to embodiment 3 as shown in figure 3
Curve graph compares：Corresponding each spatial frequency, the mould of embodiment 1 to the optical transfer function of embodiment 3 is than the prior art
The mould of optical transfer function is big, and tends to 0 value, spatial frequency for the mould of the optical transfer function of some spectrum prior arts
Bigger, the mould difference in size of the optical transfer function of the different spectrum of the prior art is bigger, illustrates embodiment 1 to embodiment 3
Image quality is significantly better than the prior art, therefore being capable of relatively existing skill using the funduscopy device of embodiment 1 to embodiment 3
Art significantly improves image quality.
The MTF curve figure of embodiment 1 to the embodiment 3 of fig. 4 to fig. 6 is compared to each other：, it is apparent that embodiment 2
The mould size of optical transfer function concentrate within the scope of 0.55~0.85Ip/mm substantially, and have in embodiment 3 and embodiment 1
The mould size of the optical transfer function of some spectrum does not focus on 0.55~0.85Ip/mm ranges, and embodiment 3 and implementation
The mould that the optical transfer function of the spectrum in 0.55~0.85Ip/mm is not focused in example 1 is smaller, therefore embodiment 3 and reality
Although apply example 1 improves image quality compared with the prior art, not as good as the image quality of embodiment 2, embodiment 2 at image quality
Amount is best, therefore embodiment 2 is optimum way.
Embodiment 4：
The present embodiment and embodiment 1 to embodiment 3 difference lies in：1) imaging system figure as shown in Figure 7 is used, it can be with
, it is evident that in figure the shape of field lens 2 ' and above-described embodiment it is inconsistent, there is contrary flexure phenomenon (i.e. in the shape of field lens 2 '
It is：Although the recessed plane of refraction 21 ' of object and the convex 22 ' middle part of plane of refraction of object are bent towards 1 ' direction of object lens, the recessed plane of refraction of object
21 ' occur at the both ends of field lens 2 ' to away from 1 ' direction buckling phenomenon of object lens with the convex plane of refraction 22 ' of object), but the field lens
2 ' remain able to improve image quality.
Following table is the parameter of object lens 1 ' and field lens 2 ' in the embodiment：
The aspherical parameter of first convex plane of refraction 11 '：a1=-0.00063914087, b1=6.4761014*10-6, e1
=-7.3264882*10-9, d1=-2.8755397*10-10,K1=-1.377143；Second convex folding
Penetrate the aspherical parameter in face 12 '：a2=-2.4728644*10-6, b2=-3.4336099*10-9, e2=7.2078133*10-11,
d2=0,K2=-0.9937；The aspherical parameter of the recessed plane of refraction of object 21 '：a3=1.7013508*10-5, b3=-4.7320885*10-8, e3=5.445366*10-12, d3=3.550946*10-15,K3
=22.17395；The aspherical parameter of the convex plane of refraction of object 22 '：a4=8.8994761*10-6, b4=-3.129282*10-8, e4=
2.5760318*10-11, d4=-1.8769041*10-14,K4=-51.06332.
The present embodiment and 2 field lens of embodiment and object lens it is most like, the present embodiment is differed only in embodiment 2：The
The aspherical parameter of one convex plane of refraction 11 ', second convex plane of refraction 12 ', the recessed plane of refraction 21 ' of object and the convex plane of refraction of object 22 '
It is inconsistent (to that is to say：First convex plane of refraction 11 ', second convex plane of refraction 12 ', the recessed plane of refraction 21 ' of object and the convex plane of refraction of object
22 ' bending situations are had any different with embodiment 1 to embodiment 3).
The mould size of the optical transfer function of embodiment 4 concentrates within the scope of 0.3~0.85Ip/mm substantially, for difference
Light for the mould of optical transfer function of embodiment 4 relatively concentrate, and the modulus value of the optical transfer function of embodiment 4 also compares
Greatly, therefore good imaging quality.The comparison of the present embodiment and 3 image quality of embodiment 1, embodiment 2 and embodiment：It can be apparent
Find out, the mould size of the optical transfer function of embodiment 4 concentrates within the scope of 0.3~0.85Ip/mm substantially, and in Fig. 4 and Fig. 6
The embodiment 1 respectively shown is compared with embodiment 3, and the modulus value of the optical transfer function of embodiment 4 is bigger than embodiment 1 and embodiment 3, because
The image quality of this embodiment 4 is better than the image quality of embodiment 1 and embodiment 3；Fig. 8 and Fig. 5 are compared, embodiment 2
The mould size of optical transfer function concentrate within the scope of 0.55~0.85Ip/mm substantially, and the optical transfer function of embodiment 4
Modulus value it is more smaller than embodiment 2, therefore the image quality of embodiment 4 is slightly worse than the image quality of embodiment 2.
In conclusion using 1 ' the come observing eye bottom of field lens 2 ' and object lens in embodiment 4, eyeground can be clearly apparent
The shape of structure, field lens 2 ' is more flexible.
Embodiment 5：
The present embodiment and above-described embodiment 1 to embodiment 4 difference lies in：In order to facilitate use, the present embodiment is to installation
Frame is designed.
As shown in Fig. 2, the mounting bracket includes：
Field fixed part 41, object lens 1 are installed on a fixed part 41；
Object fixed part 42, field lens 2 are installed on object fixed part 42；
Fixed frame 43, the fixing end of fixed frame 43 is for being installed on microscope stand, on the free end of fixed frame 43 successively
Erecting bed fixed part 41 and object fixed part 42.
Of course, it should be understood that in order to enable imaging effect is more preferable, since object distance is 1 when the funduscopy device uses
~3mm can be fixed to microscopical height and the extended length of fixed frame 43, by the eyeground by the way that fixed part 44 is arranged
Object distance is 1~3mm when check device uses, because microscope position is fixed when operation, by the way that fixed part 44 is arranged fixed to aobvious
The height of micro mirror, set 43 fixing end of fixed frame to bed surface height；Pass through the extended length of setting fixed frame 43 again, so that it may
(it is to the distance between eyeball clearly to set object lens 1：Object distance) range of the eyes to bed surface because everyone lies on a bed
Substantially certain, it is thus user-friendly.
Embodiment 6：
The present embodiment and embodiment 1 to embodiment 4 difference lies in：The present embodiment is a kind of to use embodiment 1 to embodiment 4
The imaging method of any funduscopy device, using above-mentioned funduscopy device close to eyeball 3 to be seen, observing eye
Bottom.
As shown in Figure 1, first convex plane of refraction 11 of funduscopy device distance between observing eyeball is 1mm~3mm.
Due in the funduscopy device, the focal range of object lens 1 is：850mm~1150mm；The focal range of the field lens 2 is：
8mm~15mm；Spacing range is between the object lens 1 and field lens 2：120mm~160mm, the eyeground clearly amplified in order to obtain
Image, first convex plane of refraction 11 is to, away from that cannot be more than 3mm, funduscopy device is when in use in order to prevent between observation eyeball
Because contacting with eyeball cause that eyes are caused to damage, first convex plane of refraction 11 between observation eyeball away from 1mm cannot be less than,
Therefore first convex plane of refraction 11 of funduscopy device distance between observing eyeball is 1mm~3mm.
Embodiment 7：
The present embodiment and embodiment 1 to embodiment 6 difference lies in：
The present embodiment provides a kind of production methods of funduscopy device in above-described embodiment, include the following steps：
Step 1: being made to field lens green body and object lens green body by Shooting Technique using plastic material；
Step 2: carrying out plated film on the surface of field lens green body and the surface of object lens green body, field lens and object lens are obtained.
Fig. 9 is that general illumination is mapped to the spectrogram obtained on the field lens or object lens obtained using the production method, due to
Field lens has all carried out plated film on the surface as the material that object lens use, therefore the spectrogram that they must beat is consistent.From figure
9 can be seen that the light for different wave length, although percent reflectivity is different, the light of most of wavelength is through interlude
Part percent reflectivity ranging from 0.2~2.0 after mirror or object lens, the value range is relatively low, thus after plated film field lens and object lens optics
Performance is improved.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with
Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the right of invention.
Claims (4)
1. a kind of funduscopy device, which is characterized in that including：
Mounting bracket；
Object lens are set on mounting bracket and are arranged close to eyeball to be seen, and object lens are lenticular convex lens, and object lens are close to be waited for
The face for observing eyeball is first convex plane of refraction, and object lens are second convex plane of refraction away from the face of eyeball to be seen, are waited for amplification
Observe eyeball；And
Field lens, is set on mounting bracket and is set to the side that object lens deviate from eyeball to be seen, and field lens is cancavo-convex convex lens
Mirror, field lens are the recessed plane of refraction of object close to the face of object lens, and field lens is the convex plane of refraction of object away from the face of object lens, and the recessed refraction of object is towards object lens
Direction is bent, to shorten focal length；
First convex plane of refraction, second convex plane of refraction, the convex plane of refraction of object and the recessed plane of refraction of object are non-spherical structure；It is described
The focal range of object lens is：850mm~1150mm；The focal range of the field lens is：8mm~15mm；The object lens and field lens
Between spacing range be：120mm~160mm；
The value range of the minimum thickness of object lens is：9.78mm to 16.33mm；The value range of the focal length of first convex plane of refraction
For：9.15mm to 15.93mm；The value range of the focal length of second convex plane of refraction is：118.207mm to 185.174mm；Object lens
Refractive index be equal to 1.192, Abbe number be equal to 49.440791；
The formula of first convex plane of refraction is：
In formula, X1For the radial distance of first convex plane of refraction, Y1For the vertical range of first convex plane of refraction, coefficient a1Take
Value is ranging from：- 0.0001 to -0.0007, coefficient b1Value range be：1.4761014*10-6To 7.5000000*10-6, it is
Number e1Value range be：-1.1264882*10-9To -8.1000000*10-9, coefficient d1Value range be：-
0.8755397*10-10To -3.8755397*10-10, C1For the inverse of base radius, value range is：ExtremelyConstant of the cone K1Value range be：- 0.812968~-2.812968；
The formula of second convex plane of refraction is：
In formula, X2For the radial distance of second convex plane of refraction, Y2For the vertical range of second convex plane of refraction, coefficient a2Take
Value is ranging from：-0.83000000*10-6To -3.2100000*10-6, coefficient b2Value range be：-0.9736000*10-9
To -2.7372000*10-9, coefficient e2Value range be：2.3313300*10-11To 5.7822133*10-11, coefficient d2Take
Value is ranging from：-1.3313300*10-12To 1.53217511*10-12, C2For the inverse of base radius, value range is：ExtremelyConstant of the cone K2Value range be：- 0.4122346 to -0.9802233；
The value range of the minimum thickness of field lens is：1.84mm to 4.78mm；The value range of the focal length of the recessed plane of refraction of object is：
1.34mm to 4.92mm；The value range of the focal length of the convex plane of refraction of object is：19.63mm to 45.62mm；The refractive index of field lens is equal to
1.585, Abbe number is equal to 29.90000；
The formula of the recessed plane of refraction of object is：
In formula, X3For the radial distance of the recessed plane of refraction of object, Y3For the vertical range of the recessed plane of refraction of object, coefficient a3Value range be：
0.8963241*10-6To 2.9356247*10-6, coefficient b3Value range be：-3.2597623*10-8To -0.6321846*
10-8, coefficient e3Value range be：2.1057946*10-12To 9.2356794*10-12, coefficient d3Value range be：-
8.43157*10-15To -2.64572*10-15, C3For the inverse of base radius, value range is：ExtremelyConstant of the cone K3Value range be：- 172.5894 to -114.5007；
The formula of the convex plane of refraction of object is：
In formula, X4For the radial distance of the convex plane of refraction of object, Y4For the vertical range of the convex plane of refraction of object, coefficient a4Value range be：
1.3784521*10-6To 6.2897613*10-6, coefficient b4Value range be：-5.0279451*10-8To -0.8467912*
10-8, coefficient e4Value range be：0.5379154*10-11To 3.5479125*10-11, coefficient d4Value range be：-
9.4157201*10-15To -4.0579561*10-15, C4For the inverse of base radius, value range is：ExtremelyConstant of the cone K4Value range be：- 51.07431 to -22.47211.
2. funduscopy device according to claim 1, which is characterized in that a1=-0.00033914087, b1=
3.4761014*10-6, e1=-3.6264882*10-9, d1=-1.4755397*10-10,K1=-
0.922968；a2=-1.4728644*10-6, b2=-1.7336099*10-9, e2=3.6078133*10-11, d2=
0.2335289*10-12,K2=-0.6701225.
3. funduscopy device according to claim 2, which is characterized in that a3=1.6767963*10-6, b3=-
1.7942319*10-8, e3=5.5102419*10-12, d3=-5.29404*10-15,K3=-
137.5483, a4=3.5516848*10-6, b4=-2.1451818*10-8, e4=1.9764215*10-11, d4=-
6.5634435*10-15,K4=-31.62963.
4. funduscopy device according to any one of claims 1 to 3, which is characterized in that the mounting bracket includes：
Field fixed part, object lens are installed on a fixed part；
Object fixed part, field lens are installed on object fixed part；
Fixed frame, the fixing end of fixed frame is for being installed on microscope stand, and erecting bed is fixed successively on the free end of fixed frame
Portion and object fixed part.
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