CN104267491B - A kind of microscope objective - Google Patents
A kind of microscope objective Download PDFInfo
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- CN104267491B CN104267491B CN201410597557.8A CN201410597557A CN104267491B CN 104267491 B CN104267491 B CN 104267491B CN 201410597557 A CN201410597557 A CN 201410597557A CN 104267491 B CN104267491 B CN 104267491B
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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Abstract
The invention discloses a kind of microscope objective, belong to optical field.13 spherical glass lens of it shaft device that includes sharing the same light, it is arranged in order to image space from thing side: the first lens, second lens, wherein the three, the four, the 5th lens combinations are balsaming lens group, six, the seven, the 8th lens combinations are balsaming lens group, nine, the tenth lens combinations are balsaming lens group, the 11st, the 12nd, the 13rd lens combination be balsaming lens group.This microscope objective can realize the imaging of high resolution, has the features such as visual field is big, resolution is high, volume is little, processing technique is ripe, low cost.
Description
Technical field
The invention belongs to optical field, more particularly, it relates to a kind of microscope objective.
Background technology
Microscope has become the requisite high technology equipment of a lot of industry research, extensively applies in some accurate miniature fields, special
In medical treatment and scientific research etc., not there is irreplaceable effect.
The size of the visual field of microscope objective can affect range of observation, and visual field is the biggest, and observable scope is the biggest, such energy
More preferable and complete object observing；The most existing all kinds of microscope objectives, but the visual field one that technically can reach at present
As be maintained at about 20mm, and the visual field of maximum also only has 25mm, and is all only applicable to visualization aspect；Along with science and technology
Development, the technology in terms of at present a lot of fields have started to apply ccd image collection automatically, it is therefore desirable to bigger microscope thing
The visual field of mirror, and the visual field of the microscope objective of routine will be unable to meet demand.
China Patent No.: 200810087210.3 applyings date: on 03 24th, 2008, disclose a entitled one micro-
The patent of endoscope objective lens, it is by least four lens or battery of lens (L1, L2A, L2B, L3, L4A, L4B, G1, G2) composition is also
Can be preferably used to improve picture contrast.According to this invention, observe from object side, the phase of alignment can be concentric with the optical axis
Plate is integrated into the first lens and the second lens (L2AOr L2BTake out in air space between) and from this air space.Limited
Surely arrange phase-plate and explicitly actual pupil is displaced to the first two lens (L of microscope objective1And L2A、L2B) or thoroughly
Air space between mirror group allow the microscope objective being initially designed as bright field modification be redesigned as relatively simple
Phase contrast modification, but its visual field is the least, and also manufacturing cost is high.
China Patent No.: 200780016306.4 applyings date: on 04 26th, 2007, disclose a entitled one micro-
The patent document of endoscope objective lens, it has preferred antisymmetric lens or battery of lens, and imaging scale is-100 times, and visual field value is 20.
According to this invention, this microscope objective is made up of 9 lens and 3 attaching components, from object side (left side) be initially by
Have lens, the meniscus L2 with positive light coke that one half-sphere mirror L1 of approximation of positive light coke formed, to have positive light burnt
The double attaching components G1 of degree, there is another double attaching components G2 of positive light coke, there is the double bonding of negative power
Element G3, is finally the meniscus L9 with negative power.By using the attaching components and lens pair that structure is identical, can
To improve picture contrast, but it exists, and visual field value is low and production cost is high, processing difficulties.
Summary of the invention
Problem to be solved
Visual field for existing microscope objective is little, and the visual field of the microscope objective of routine will be unable to meet demand and also cost is high
Problem, the present invention provides a kind of microscope objective, it has, and visual field is big, resolution is high, volume is little, processing technique easily operates,
The advantage of low cost.
2. technical scheme
In order to solve the problems referred to above, the technical solution adopted in the present invention is as follows:
A kind of microscope objective, including 13 spherical lenss of shaft device of sharing the same light, is arranged in order, from thing side to image space from thing side
13 spherical lenss to image space be respectively as follows: the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens,
6th lens, the 7th lens, the 8th lens, the 9th lens, the tenth lens, the 11st lens, the 12nd lens and the 13rd
Lens；First lens are concave surface towards thing side, are convex surface towards image space；Second lens are convex surface towards thing side, towards image space are
Convex surface；3rd lens, the 4th lens and the 5th lens combination are balsaming lens group, and wherein the 3rd lens are convex surface towards thing side,
It is concave surface towards image space；4th lens are convex surface towards thing side, are convex surface towards image space；5th lens are concave surface towards thing side,
Being convex surface towards image space, the 3rd lens are glued together towards the convex surface of thing side towards concave surface and the 4th lens of image space, and the 4th is saturating
Minute surface is combined towards the concave glue of thing side to the convex surface of image space and the 5th lens；6th lens, the 7th lens and the 8th lens
Being combined as balsaming lens group, wherein the 6th lens are convex surface towards thing side, are concave surface towards image space；7th lens towards thing side are
Convex surface, is concave surface towards image space；8th lens are convex surface towards thing side, are convex surface towards image space, and the 6th lens are towards image space
Concave surface and the 7th lens are glued together towards the convex surface of thing side, and the 7th lens are towards the concave surface of image space and the 8th lens towards thing side
Convex surface glued together；9th lens and the tenth lens combination are balsaming lens group, and wherein the 9th lens are convex surface towards thing side,
It is convex surface towards image space；Tenth lens are concave surface towards thing side, are concave surface towards image space, the 9th lens towards image space convex surface with
Tenth lens are combined towards the concave glue of thing side；11st lens, the 12nd lens and the 13rd lens combination are glued saturating
Mirror group, wherein the 11st lens are concave surface towards thing side, are concave surface towards image space；12nd lens are convex surface towards thing side, face
Being convex surface to image space, the 13rd lens are concave surface towards thing side, are concave surface towards image space, and the 11st lens are towards the concave surface of image space
Glued together towards the convex surface of thing side with the 12nd lens, the 12nd lens are towards the convex surface of image space and the 13rd lens towards thing
The concave glue of side is combined；Above-mentioned 13 lens nineteen minute surface altogether, the concave surface of the first lens is the first minute surface, and first is saturating
The convex surface of mirror is the second minute surface, and the second lens are the 3rd minute surface towards the convex surface of thing side, and the second lens are towards the convex surface of image space
Four minute surfaces, the 3rd lens are the 5th minute surface towards the convex surface of thing side, and the cemented surface of the 3rd lens and the 4th lens is the 6th minute surface,
The cemented surface of the 4th lens and the 5th lens is the 7th minute surface, and the 5th lens are the 8th minute surface towards the convex surface of image space, the 6th lens
Convex surface towards thing side is the 9th minute surface, and the cemented surface of the 6th lens and the 7th lens is the tenth minute surface, the 7th lens and the 8th saturating
The cemented surface of mirror is the 11st minute surface, and the 8th lens are the 12nd minute surface towards the convex surface of image space, convex towards thing side of the 9th lens
Face is the 13rd minute surface, and the cemented surface of the 9th lens and the tenth lens is the 14th minute surface, and the tenth lens towards the concave surface of image space are
15th minute surface, the 11st lens are the 16th minute surface towards the concave surface of thing side, the 11st lens and the cemented surface of the 12nd lens
Being the 17th minute surface, the cemented surface of the 12nd lens and the 13rd lens is the 18th minute surface, recessed towards image space of the 13rd lens
Face is the 19th minute surface；The structural parameters of nineteen minute surface are:
First minute surface is R1=-59.625～-59.025mm, D1=4.287～4.425mm, ψ 1=12.251～12.508mm；
Second minute surface is R2=-21.915～-21.255mm, D2=0.186～0.205mm, ψ 2=12.799～13.060mm；
3rd minute surface is R3=29.956～30.575mm, D3=7.912～8.080mm, ψ 3=14.176～14.325mm；
4th minute surface is R4=-58.077～-57.502mm, D4=0.186～0.205mm, ψ 4=14.036～14.185mm；
5th minute surface is R5=39.981～40.390mm, D5=1.554～1.630mm, ψ 5=13.167～13.440mm；
6th minute surface is R6=19.487～20.085mm, D6=10.937～11.055mm, ψ 6=12.217～12.465mm；
7th minute surface is R7=-20.093～-19.495mm, D7=1.559～1.630mm, ψ 7=11.889～12.135mm；
8th minute surface is R8=-48.143～-47.655mm, D8=0.186～0.205mm, ψ 8=12.127～12.380mm；
9th minute surface is R9=15.869～16.360mm, D9=5.932～6.060mm, ψ 9=11.522～11.715mm；
Tenth minute surface is R10=42.436～42.870mm, D10=2.457～2.535mm, ψ 10=10.727～10.950mm；
11st minute surface is R11=12.205～12.715mm, D11=5.932～6.060mm, ψ 11=9.089～9.272mm；
12nd minute surface is R12=-124.989～-123.738mm, D12=0.283～0.305mm, ψ 12=8.853～9.040mm；
13rd minute surface is R13=17.398～18.115mm, D13=5.932～6.060mm, ψ 13=8.152～8.325mm；
14th minute surface is R14=-28.091～-26.985mm, D14=5.932～6.060mm, ψ 14=7.137～7.285mm；
15th minute surface is R15=40.957～42.215mm, D15=7.912～8.080mm, ψ 15=5.441～5.560mm；
16th minute surface is R16=-13.645～-12.970mm, D16=2.457～2.535mm, ψ 16=3.241～3.345mm；
17th minute surface is R17=18.323～19.080mm, D17=5.041～5.150mm, ψ 17=3.141～3.245mm；
18th minute surface is R18=-5.901～-5.606mm, D18=2.457～2.535mm, ψ 18=3.017～3.115mm；
19th minute surface is R19=10.679～11.010mm, D19=199.109～201.078mm, ψ 19=2.749～2.868mm.
Wherein R1 is the radius of curvature of the first minute surface；D1 is the minute surface distance of the first minute surface；ψ 1 is effective light hole of the first minute surface
Footpath, the implication of R2-R19, D2-D19 and ψ 2-ψ 19 the like, the structural parameters of nineteen minute surface see table:
The structural parameters of table 1 nineteen minute surface
Preferably, the focal length of described first lens is 39.87mm, and the focal length of the second lens is 46.54mm, the 3rd lens,
The balsaming lens group focal length of four lens and the 5th lens combination is-758.05mm, the 6th lens, the 7th lens and the 8th lens combination
Balsaming lens group focal length be 75.85mm, the balsaming lens group focal length of the 9th lens and the tenth lens combination is 511.89mm,
The balsaming lens group focal length of 11 lens, the 12nd lens and the 13rd lens combination is-6.94mm.
Preferably, the refractive index/Abbe number (nd/vd) of described first lens is 1.80166/44.26, the refractive index of the second lens
/ Abbe number is 1.43335/94.52, the refractive index of the 3rd lens/Abbe number 1.85544/36.59, the refractive index of the 4th lens/
Abbe number is 1.43335/94.52, and the refractive index/Abbe number of the 5th lens is 1.80166/44.26, the refractive index of the 6th lens
/ Abbe number is 1.43335/94.52, and the refractive index/Abbe number of the 7th lens is 1.78800/47.49, the refractive index of the 8th lens
/ Abbe number is 1.43335/94.52, and the refractive index/Abbe number of the 9th lens is 1.43335/94.52, the refractive index of the tenth lens
/ Abbe number is 1.69211/54.54, and the refractive index/Abbe number of the 11st lens is 1.85544/36.59, the folding of the 12nd lens
The rate of penetrating/Abbe number is 1.92286/20.88, and the refractive index/Abbe number of the 13rd lens is 1.85544/36.59.
Preferably, its maximum field of view is 50mm.
The microscope objective of the present invention, all uses spherical lens, completely compatible with characterization processes with the processing of existing optical glass,
Under low cost of manufacture, and the structural parameters of the nineteen minute surface be given in the present invention, it is possible to achieve increase the visual field of microscope objective,
The visual field of microscope objective can reach 50mm, is fully achieved the effect significantly increasing microscope objective visual field.
3. beneficial effect
Compared to prior art, the invention have the benefit that
(1) microscope objective of the present invention, all uses spherical lens, the most double with characterization processes with the processing of existing optical glass
Hold, low cost of manufacture；
(2) under the structural parameters of the nineteen minute surface that the present invention is given, it is possible to achieve increase the visual field of microscope objective, microscope
The visual field of object lens can reach 50mm, is fully achieved the effect significantly increasing microscope objective visual field；
(3) present configuration is simple, reasonable in design, it is easy to manufacture.
Accompanying drawing explanation
Fig. 1 is the structural representation of the microscope objective of the present invention；
Fig. 2 is that ZEMAX software simulates under embodiments of the invention 1 parameter, the parameter list of the visual field of microscope objective；
Fig. 3, Fig. 4, Fig. 5 and Fig. 6 are that ZEMAX software simulates under Fig. 2 visual field imposes a condition, microscope objective imaging
Mass effect figure；Wherein Fig. 3 is optical path difference, and its abscissa is normalization aperture, and vertical coordinate is that the reference in units of wave number is main
The optical path difference of light, Fig. 4 are monochromatic encircled energy based on diffraction, and its abscissa is the radius of diffraction pattern, vertical seat
The energy being designated as in current radius accounts for the percentage ratio of gross energy, Fig. 5 is polychromatic light optical transfer function, and its abscissa is space frequency
Rate, vertical coordinate be transfer function values, Fig. 6 be ripple difference, it be the optical path difference between actual corrugated and reference sphere.
In figure: L1-the first lens；L2-the second lens；L3-the 3rd lens；L4-the 4th lens；L5-the 5th lens；L6-
Six lens；L7-the 7th lens；L8-the 8th lens；L9-the 9th lens；L10-the tenth lens；L11-the 11st lens；L12-
12nd lens；L13-the 13rd lens.
Detailed description of the invention
Describe the present invention below in conjunction with concrete accompanying drawing.
Embodiment 1
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of microscope objective, including the 13 of shaft device of sharing the same light
Sheet spherical lens, is arranged in order to image space from thing side, from thing side to 13 spherical lenss of image space be respectively as follows: the first lens L1,
Second lens L2, the 3rd lens L3, the 4th lens L4, the 5th lens L5, the 6th lens L6, the 7th lens L7, the 8th
Lens L8, the 9th lens L9, the tenth lens L10, the 11st lens L11, the 12nd lens L12 and the 13rd lens L13；
First lens L1 is concave surface towards thing side, is convex surface towards image space；Second lens L2 is convex surface towards thing side, towards image space is
Convex surface；3rd lens L3, the 4th lens L4 and the 5th lens L5 are combined as balsaming lens group, wherein the 3rd lens L3 towards
Thing side is convex surface, is concave surface towards image space；4th lens L4 is convex surface towards thing side, is convex surface towards image space；5th lens
L5 is concave surface towards thing side, is convex surface towards image space, and the 3rd lens L3 is towards the concave surface of image space and the 4th lens L4 towards thing side
Convex surface glued together, the 4th lens L4 is combined towards the convex surface of image space and the 5th lens L5 towards the concave glue of thing side；
6th lens L6, the 7th lens L7 and the 8th lens L8 are combined as balsaming lens group, and wherein the 6th lens L6 towards thing side is
Convex surface, is concave surface towards image space；7th lens L7 is convex surface towards thing side, is concave surface towards image space；8th lens L8 towards
Thing side is convex surface, is convex surface towards image space, and the 6th lens L6 is towards the concave surface of image space and the 7th lens L7 towards the convex surface of thing side
Glued together, the 7th lens L7 is glued together towards the convex surface of thing side towards concave surface and the 8th lens L8 of image space；9th
Lens L9 and the tenth lens L10 is combined as balsaming lens group, and wherein the 9th lens L9 is convex surface towards thing side, towards image space is
Convex surface；Tenth lens L10 is concave surface towards thing side, is concave surface towards image space, and the 9th lens L9 is towards the convex surface and of image space
Ten lens L10 are combined towards the concave glue of thing side；11st lens L11, the 12nd lens L12 and the 13rd lens L13
Being combined as balsaming lens group, wherein the 11st lens L11 is concave surface towards thing side, is concave surface towards image space；12nd lens L12
Being convex surface towards thing side, be convex surface towards image space, the 13rd lens L13 is concave surface towards thing side, is concave surface towards image space, the
11 lens L11 are glued together towards the convex surface of thing side towards concave surface and the 12nd lens L12 of image space, the 12nd lens L12
It is combined towards the convex surface of image space and the 13rd lens L13 towards the concave glue of thing side；Above-mentioned 13 lens nineteen mirror altogether
Face, the concave surface of the first lens L1 is the first minute surface, and the convex surface of the first lens L1 is the second minute surface, and the second lens L2 is towards thing
The convex surface of side is the 3rd minute surface, and the second lens L2 is the 4th minute surface towards the convex surface of image space, convex towards thing side of the 3rd lens L3
Face is the 5th minute surface, and the cemented surface of the 3rd lens L3 and the 4th lens L4 is the 6th minute surface, the 4th lens L4 and the 5th lens
The cemented surface of L5 is the 7th minute surface, and the 5th lens L5 is the 8th minute surface towards the convex surface of image space, and the 6th lens L6 is towards thing side
Convex surface is the 9th minute surface, and the cemented surface of the 6th lens L6 and the 7th lens L7 is the tenth minute surface, the 7th lens L7 and the 8th saturating
The cemented surface of mirror L8 is the 11st minute surface, and the 8th lens L8 is the 12nd minute surface towards the convex surface of image space, the 9th lens L9 face
Being the 13rd minute surface to the convex surface of thing side, the cemented surface of the 9th lens L9 and the tenth lens L10 is the 14th minute surface, and the tenth is saturating
Mirror L10 is the 15th minute surface towards the concave surface of image space, and the 11st lens L11 is the 16th minute surface towards the concave surface of thing side, the tenth
The cemented surface of one lens L11 and the 12nd lens L12 is the 17th minute surface, the 12nd lens L12's and the 13rd lens L13
Cemented surface is the 18th minute surface, and the 13rd lens L13 is the 19th minute surface towards the concave surface of image space；The structure ginseng of nineteen minute surface
Number is:
The structural parameters of table 2 embodiment 1 nineteen minute surface
The focal length of its described first lens is 39.87mm, and the focal length of the second lens is 46.54mm, the 3rd lens, the 4th
The balsaming lens group focal length of lens and the 5th lens combination is-758.05mm, the 6th lens, the 7th lens and the 8th lens combination
Balsaming lens group focal length is 75.85mm, and the balsaming lens group focal length of the 9th lens and the tenth lens combination is 511.89mm, the tenth
The balsaming lens group focal length of one lens, the 12nd lens and the 13rd lens combination is-6.94mm.
Additionally also having the refractive index/Abbe number (nd/vd) of the first lens described in the present embodiment is 1.80166/44.26, and second is saturating
Refractive index/the Abbe number of mirror is 1.43335/94.52, the refractive index of the 3rd lens/Abbe number 1.85544/36.59, the 4th lens
Refractive index/Abbe number be 1.43335/94.52, the refractive index/Abbe number of the 5th lens is 1.80166/44.26, the 6th lens
Refractive index/Abbe number be 1.43335/94.52, the refractive index/Abbe number of the 7th lens is 1.78800/47.49, the 8th lens
Refractive index/Abbe number be 1.43335/94.52, the refractive index/Abbe number of the 9th lens is 1.43335/94.52, the tenth lens
Refractive index/Abbe number be 1.69211/54.54, the refractive index/Abbe number of the 11st lens is 1.85544/36.59, the 12nd
Refractive index/the Abbe number of lens is 1.92286/20.88, and the refractive index/Abbe number of the 13rd lens is 1.85544/36.59.
The experimental result of above parameter is simulated by ZEMAX software, as shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6,
Fig. 2 is the parameter list of the visual field of microscope objective.By the parameter of Fig. 2 it can be seen that the visual field of its microscope objective is 50mm.
It is fully achieved the visual field that microscope objective is greatly improved.It is 50mm that its experimental result reaches the visual field of microscope objective equally, complete
Entirely reach significantly to increase the effect of microscope objective visual field.
What Fig. 3 optical path difference was shown is under big visual field, the situation of dispersion, by image it can be seen that under different visual fields, its
Optical path difference relation under the pupil coordinate of meridional component and sagitta of arc component, X, Y represent sagitta of arc component and meridional component, image respectively
Maximum perpendicular ratio be ± 5.000 wavelength；From top to bottom, seeing figure from left to right, the first width graphical representation visual field point is 0.00mm,
Optical path difference curve chart under the pupil coordinate of its meridional component and sagitta of arc component, on the basis of axis of abscissas, each curve from the bottom to top
Representing the curve that wavelength is 0.546,0.644,0.480,0.436 respectively, the second width graphical representation visual field point is 12.50mm, its
Optical path difference curve chart under the pupil coordinate of meridional component and sagitta of arc component, on the basis of axis of abscissas, each curve from the bottom to top divides
Not representing the curve that wavelength is 0.546,0.644,0.480,0.436, the 3rd width graphical representation visual field point is 17.68mm, its son
Optical path difference curve chart under the pupil coordinate of noon component and sagitta of arc component, on the basis of axis of abscissas, each curve from the bottom to top is respectively
Representing the curve that wavelength is 0.546,0.644,0.480,0.436, the 4th width graphical representation visual field point is 21.65mm, its meridian
Optical path difference curve chart under the pupil coordinate of component and sagitta of arc component, on the basis of axis of abscissas, each curve generation respectively from the bottom to top
Table wavelength is the curve of 0.546,0.644,0.480,0.436, and the 5th width graphical representation visual field point is 25.00mm, and its meridian divides
Optical path difference curve chart under the pupil coordinate of amount and sagitta of arc component, on the basis of axis of abscissas, each curve from the bottom to top represents respectively
Wavelength is the curve of 0.546,0.644,0.480,0.436.Wherein the curve in every secondary curve chart is the closer to axis of abscissas, its light
Path difference is the best, image the dispersion that can embody whole visual field is preferable.
What the monochromatic encircled energy based on diffraction of Fig. 4 was shown is under big visual field, embodies reasonable energy and concentrates
Degree, it can be seen that make a datum line from image, each curve intersects from the bottom to top with datum line, and its every curve represents respectively
When visual field point is 25.00mm, 21.65mm, 17.68mm, 0.00mm, 12.50mm, the energy percentage of visual field and hot spot
Relation between radius, goes up most the relation that curve is ideally energy percentage and spot radius, other curves
And gap is the smaller the better between this ideal curve, whole visual field preferable capability set moderate can be embodied from image.
What Fig. 5 polychromatic light optical transfer function was shown is under big visual field, it can be seen that its contrast is the best, can from image
To find out, in image, T is meridional component, and S is sagitta of arc component；Making a datum line, each curve intersects from the bottom to top with datum line,
Its Article 1 curve represents the transmission function of the meridional component that visual field point is 25.00mm, and Article 2 curve represents that visual field point is
The transmission function of the meridional component of 21.65mm, Article 3 curve represents the transmission function of the meridional component that visual field point is 17.68mm,
Article 4 curve represents the transmission function of the meridional component that visual field point is 12.50mm, and Article 5 curve represents that visual field point is
The transmission function of the sagitta of arc component of 25.00mm, Article 6 curve represents the transmission function of the sagitta of arc component that visual field point is 21.65mm,
Article 7 curve represents the transmission function of the sagitta of arc component that visual field point is 17.68mm, and Article 8 curve represents that visual field point is 0.00mm
The transmission function and the transmission function of sagitta of arc component of meridional component, Article 9 curve represents that visual field point is the sagitta of arc minute of 12.50mm
The transmission function of amount.Wherein Article 10 curve is transfer curve ideally, and other curves more connect with this ideal curve
Nearly expression performance is the best, image can be seen that its contrast of whole visual field is the best.
What Fig. 6 ripple difference was shown is under big visual field, and ripple difference and theoretical value are close to perfect.
Embodiment 2
With embodiment 1, except that the structural parameters of nineteen minute surface, it is specifically shown in following table:
The structural parameters of nineteen minute surface in table 3 embodiment 2
It is 50mm that its experimental result reaches the visual field of microscope objective equally, is fully achieved the visual field significantly increasing microscope objective.
Embodiment 3
With embodiment 1, except that the structural parameters of 14 minute surfaces, it is specifically shown in following table:
The structural parameters of nineteen minute surface in table 4 embodiment 3
It is 50mm that its experimental result reaches the visual field of microscope objective equally, is fully achieved and significantly increases microscope objective visual field
Effect.
Claims (5)
1. a microscope objective, 13 spherical lenss including shaft device of sharing the same light, it is arranged in order to image space from thing side, from thing side, 13 spherical lenss to image space are respectively as follows: the first lens (L1), second lens (L2), 3rd lens (L3), 4th lens (L4), 5th lens (L5), 6th lens (L6), 7th lens (L7), 8th lens (L8), 9th lens (L9), tenth lens (L10), 11st lens (L11), 12nd lens (L12) and the 13rd lens (L13)；It is characterized in that: the first lens (L1) are concave surface towards thing side, are convex surface towards image space；Second lens (L2) are convex surface towards thing side, are convex surface towards image space；3rd lens (L3), the 4th lens (L4) and the 5th lens (L5) are combined as balsaming lens group, and wherein the 3rd lens (L3) are convex surface towards thing side, are concave surface towards image space；4th lens (L4) are convex surface towards thing side, are convex surface towards image space；5th lens (L5) are concave surface towards thing side, it is convex surface towards image space, 3rd lens (L3) are glued together towards the convex surface of thing side towards concave surface and the 4th lens (L4) of image space, and the 4th lens (L4) are combined towards the convex surface of image space and the 5th lens (L5) towards the concave glue of thing side；6th lens (L6), the 7th lens (L7) and the 8th lens (L8) are combined as balsaming lens group, and wherein the 6th lens (L6) are convex surface towards thing side, are concave surface towards image space；7th lens (L7) are convex surface towards thing side, are concave surface towards image space；8th lens (L8) are convex surface towards thing side, it is convex surface towards image space, 6th lens (L6) are glued together towards the convex surface of thing side towards concave surface and the 7th lens (L7) of image space, and the 7th lens (L7) are glued together towards the convex surface of thing side towards concave surface and the 8th lens (L8) of image space；9th lens (L9) and the tenth lens (L10) are combined as balsaming lens group, and wherein the 9th lens (L9) are convex surface towards thing side, are convex surface towards image space；Tenth lens (L10) are concave surface towards thing side, are concave surface towards image space, and the 9th lens (L9) are combined towards the convex surface of image space and the tenth lens (L10) towards the concave glue of thing side；11st lens (L11), the 12nd lens (L12) and the 13rd lens (L13) are combined as balsaming lens group, and wherein the 11st lens (L11) are concave surface towards thing side, are concave surface towards image space；12nd lens (L12) are convex surface towards thing side, it is convex surface towards image space, 13rd lens (L13) are concave surface towards thing side, it is concave surface towards image space, 11st lens (L11) are glued together towards the convex surface of thing side towards concave surface and the 12nd lens (L12) of image space, and the 12nd lens (L12) are combined towards the convex surface of image space and the 13rd lens (L12) towards the concave glue of thing side.
nullA kind of microscope objective the most according to claim 1，It is characterized in that: described 13 lens nineteen minute surface altogether，The concave surface of the first lens (L1) is the first minute surface，The convex surface of the first lens (L1) is the second minute surface，Second lens (L2) are the 3rd minute surface towards the convex surface of thing side，Second lens (L2) are the 4th minute surface towards the convex surface of image space，3rd lens (L3) are the 5th minute surface towards the convex surface of thing side，The cemented surface of the 3rd lens (L3) and the 4th lens (L4) is the 6th minute surface，The cemented surface of the 4th lens (L4) and the 5th lens (L5) is the 7th minute surface，5th lens (L5) are the 8th minute surface towards the convex surface of image space，6th lens (L6) are the 9th minute surface towards the convex surface of thing side，The cemented surface of the 6th lens (L6) and the 7th lens (L7) is the tenth minute surface，The cemented surface of the 7th lens (L7) and the 8th lens (L8) is the 11st minute surface，8th lens (L8) are the 12nd minute surface towards the convex surface of image space，9th lens (L9) are the 13rd minute surface towards the convex surface of thing side，The cemented surface of the 9th lens (L9) and the tenth lens (L10) is the 14th minute surface，Tenth lens (L10) are the 15th minute surface towards the concave surface of image space，11st lens (L11) are the 16th minute surface towards the concave surface of thing side，The cemented surface of the 11st lens (L11) and the 12nd lens (L12) is the 17th minute surface，The cemented surface of the 12nd lens (L12) and the 13rd lens (L13) is the 18th minute surface，13rd lens (L13) are the 19th minute surface towards the concave surface of image space；The structural parameters of nineteen minute surface are:
First minute surface is R1=-59.625～-59.025mm, D1=4.287～4.425mm, ψ 1=12.251～12.508mm；
Second minute surface is R2=-21.915～-21.255mm, D2=0.186～0.205mm, ψ 2=12.799～13.060mm；
3rd minute surface is R3=29.956～30.575mm, D3=7.912～8.080mm, ψ 3=14.176～14.325mm；
4th minute surface is R4=-58.077～-57.502mm, D4=0.186～0.205mm, ψ 4=14.036～14.185mm；
5th minute surface is R5=39.981～40.390mm, D5=1.554～1.630mm, ψ 5=13.167～13.440mm；
6th minute surface is R6=19.487～20.085mm, D6=10.937～11.055mm, ψ 6=12.217～12.465mm；
7th minute surface is R7=-20.093～-19.495mm, D7=1.559～1.630mm, ψ 7=11.889～12.135mm；
8th minute surface is R8=-48.143～-47.655mm, D8=0.186～0.205mm, ψ 8=12.127～12.380mm；
9th minute surface is R9=15.869～16.360mm, D9=5.932～6.060mm, ψ 9=11.522～11.715mm；
Tenth minute surface is R10=42.436～42.870mm, D10=2.457～2.535mm, ψ 10=10.727～10.950mm；
11st minute surface is R11=12.205～12.715mm, D11=5.932～6.060mm, ψ 11=9.089～9.272mm；
12nd minute surface is R12=-124.989～-123.738mm, D12=0.283～0.305mm, ψ 12=8.853～9.040mm；
13rd minute surface is R13=17.398～18.115mm, D13=5.932～6.060mm, ψ 13=8.152～8.325mm；
14th minute surface is R14=-28.091～-26.985mm, D14=5.932～6.060mm, ψ 14=7.137～7.285mm；
15th minute surface is R15=40.957～42.215mm, D15=7.912～8.080mm, ψ 15=5.441～5.560mm；
16th minute surface is R16=-13.645～-12.970mm, D16=2.457～2.535mm, ψ 16=3.241～3.345mm；
17th minute surface is R17=18.323～19.080mm, D17=5.041～5.150mm, ψ 17=3.141～3.245mm；
18th minute surface is R18=-5.901～-5.606mm, D18=2.457～2.535mm, ψ 18=3.017～3.115mm；
19th minute surface is R19=10.679～11.010mm, D19=199.109～201.078mm, ψ 19=2.749～2.868mm.
A kind of microscope objective the most according to claim 2, it is characterized in that: the focal length of described first lens (L1) is 39.87mm, the focal length of the second lens (L2) is 46.54mm, 3rd lens, the balsaming lens group focal length of the 4th lens and the 5th lens combination is-758.05mm, 6th lens, the balsaming lens group focal length of the 7th lens and the 8th lens combination is 75.85mm, the balsaming lens group focal length of the 9th lens and the tenth lens combination is 511.89mm, 11st lens, the balsaming lens group focal length of the 12nd lens and the 13rd lens combination is-6.94mm.
nullA kind of microscope objective the most according to claim 3，It is characterized in that: the refractive index/Abbe number of described first lens (L1) is 1.80166/44.26，Refractive index/the Abbe number of the second lens is 1.43335/94.52，The refractive index of the 3rd lens/Abbe number 1.85544/36.59，Refractive index/the Abbe number of the 4th lens is 1.43335/94.52，Refractive index/the Abbe number of the 5th lens is 1.80166/44.26，Refractive index/the Abbe number of the 6th lens is 1.43335/94.52，Refractive index/the Abbe number of the 7th lens is 1.78800/47.49，Refractive index/the Abbe number of the 8th lens is 1.43335/94.52，Refractive index/the Abbe number of the 9th lens is 1.43335/94.52，Refractive index/the Abbe number of the tenth lens is 1.69211/54.54，Refractive index/the Abbe number of the 11st lens is 1.85544/36.59，Refractive index/the Abbe number of the 12nd lens is 1.92286/20.88，Refractive index/the Abbe number of the 13rd lens is 1.85544/36.59.
5. according to a kind of microscope objective described in any one in claim 1,2 or 3, it is characterised in that: described microscope objective maximum field of view is 50mm.
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