CN104267491A - Microscope objective - Google Patents
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- CN104267491A CN104267491A CN201410597557.8A CN201410597557A CN104267491A CN 104267491 A CN104267491 A CN 104267491A CN 201410597557 A CN201410597557 A CN 201410597557A CN 104267491 A CN104267491 A CN 104267491A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/02—Objectives
Abstract
The invention discloses a microscope objective and belongs to the field of optics. The microscope objective comprises thirteen spherical glass lenses arranged in the same optical axis, wherein the thirteen spherical glass lenses are sequentially arranged from an object space to an image space as follows: the first lens and the second lens are arranged firstly; the third lens, the fourth lens and the fifth lens are combined into a balsaming lens group; the sixth lens, the seventh lens and the eighth lens are combined into a balsaming lens group; the ninth lens and the tenth lens are combined into a balsaming lens group; the eleventh lens, the twelfth lens and the thirteenth lens are combined into a balsaming lens group. The microscope objective can realize high-resolution imaging and has the characteristics of large field of view, high resolution ratio, small size, mature processing process, low cost and the like.
Description
Technical field
The invention belongs to optical field, more particularly, relate to a kind of micro objective.
Background technology
Microscope has become the requisite high technology equipment of a lot of industry research, in some accurate miniature field widespread uses, has irreplaceable effect especially in medical treatment and scientific research etc.
The size of the visual field of micro objective can affect range of observation, and visual field is larger, and observable scope is larger, object observing that like this can be better and complete; Have all kinds of micro objective in the world at present, but the visual field that technically can reach at present generally remains on about 20mm, and maximum visual field also only has 25mm, and be all only applicable to visualization aspect; Along with the development of science and technology, a lot of field has started the technology applying ccd image collection aspect automatically at present, therefore need the visual field of larger micro objective, and the visual field of the micro objective of routine cannot satisfy the demands.
China Patent No.: 200810087210.3 applyings date: on 03 24th, 2008, disclose the patent that a name is called a kind of micro objective, it is by least four lens or lens combination (L
1, L
2A, L
2B, L
3, L
4A, L
4B, G
1, G
2) form and can preferably be used to improve picture contrast.According to this invention, observe from object side, the first lens and the second lens (L can be integrated into by with the concentrically aligned outside phase-plate of optical axis
2Aor L
2B) between air space in and take out from this air space.Arrange phase-plate with limiting and explicitly actual pupil be displaced to the first two lens (L of micro objective
1and L
2A, L
2B) or lens combination between air space in allow the micro objective being designed to bright field modification to be at first redesigned as relatively simple phase contrast modification, but its visual field is still less, and manufacturing cost is high.
China Patent No.: 200780016306.4 applyings date: on 04 26th, 2007, disclose the patent document that a name is called a kind of micro objective, it has preferred antisymmetric lens or lens combination, and imaging scale is-100 times, and visual field value is 20.According to this invention, this micro objective is made up of 9 lens and 3 attaching components, the lens formed by an approximate half-sphere mirror L1 with positive light coke from object side (left side), the concave-convex lens L2 with positive light coke, have positive light coke double attaching components G1, there is another double attaching components G2 of positive light coke, there is the double attaching components G3 of negative power, be finally the concave-convex lens L9 with negative power.By adopting the identical attaching components of structure and lens pair, picture contrast can be improved, but it has that visual field value is low and production cost is high, processing difficulties.
Summary of the invention
1. the problem that will solve
Visual field for existing micro objective is little, and the problem that the visual field of the micro objective of routine cannot satisfy the demands and cost is high, the invention provides a kind of micro objective, visual field is large, resolution is high, volume is little, processing technology is easy to operate, cost is low advantage that it has.
2. technical scheme
In order to solve the problem, the technical solution adopted in the present invention is as follows:
A kind of micro objective, comprise 13 spherical lenses of shaft device of sharing the same light, be arranged in order to image space from object space, be respectively from object space to 13 of image space spherical lenses: the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens, the 9th lens, the tenth lens, the 11 lens, the 12 lens and the 13 lens, first lens face is concave surface to object space, is convex surface towards image space, second lens face is convex surface to object space, is convex surface towards image space, 3rd lens, the 4th lens and the 5th lens combination are balsaming lens group, and wherein the 3rd lens face is convex surface to object space, are concave surface towards image space, 4th lens face is convex surface to object space, is convex surface towards image space, 5th lens face is concave surface to object space, is convex surface towards image space, the 3rd lens face to the concave surface of image space and the 4th lens face glued together to the convex surface of object space, the 4th lens face is combined to the convex surface of image space and the 5th lens face to the concave glue of object space, 6th lens, the 7th lens and the 8th lens combination are balsaming lens group, and wherein the 6th lens face is convex surface to object space, are concave surface towards image space, 7th lens face is convex surface to object space, is concave surface towards image space, 8th lens face is convex surface to object space, is convex surface towards image space, the 6th lens face to the concave surface of image space and the 7th lens face glued together to the convex surface of object space, the 7th lens face to the concave surface of image space and the 8th lens face glued together to the convex surface of object space, 9th lens and the tenth lens combination are balsaming lens group, and wherein the 9th lens face is convex surface to object space, are convex surface towards image space, tenth lens face is concave surface to object space, is concave surface towards image space, and the 9th lens face is combined to the convex surface of image space and the tenth lens face to the concave glue of object space, 11 lens, the 12 lens and the 13 lens combination are balsaming lens group, and wherein the 11 lens face is concave surface to object space, are concave surface towards image space, 12 lens face is convex surface to object space, be convex surface towards image space, 13 lens face is concave surface to object space, be concave surface towards image space, 11 lens face to the concave surface of image space and the 12 lens face glued together to the convex surface of object space, the 12 lens face is combined to the convex surface of image space and the 13 lens face to the concave glue of object space, above-mentioned 13 lens are nineteen minute surface altogether, the concave surface of the first lens is the first minute surface, the convex surface of the first lens is the second minute surface, second lens face is the 3rd minute surface to the convex surface of object space, second lens face is the 4th minute surface to the convex surface of image space, 3rd lens face is the 5th minute surface to the convex surface of object space, 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, 5th lens face is the 8th minute surface to the convex surface of image space, 6th lens face is the 9th minute surface to the convex surface of object space, the cemented surface of the 6th lens and the 7th lens is the tenth minute surface, the cemented surface of the 7th lens and the 8th lens is the 11 minute surface, 8th lens face is the 12 minute surface to the convex surface of image space, 9th lens face is the 13 minute surface to the convex surface of object space, the cemented surface of the 9th lens and the tenth lens is the 14 minute surface, tenth lens face is the 15 minute surface to the concave surface of image space, 11 lens face is the 16 minute surface to the concave surface of object space, the cemented surface of the 11 lens and the 12 lens is the 17 minute surface, the cemented surface of the 12 lens and the 13 lens is the 18 minute surface, 13 lens face is the 19 minute surface to 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;
11 minute surface is R11=12.205 ~ 12.715mm, D11=5.932 ~ 6.060mm, ψ 11=9.089 ~ 9.272mm;
12 minute surface is R12=-124.989 ~-123.738mm, D12=0.283 ~ 0.305mm, ψ 12=8.853 ~ 9.040mm;
13 minute surface is R13=17.398 ~ 18.115mm, D13=5.932 ~ 6.060mm, ψ 13=8.152 ~ 8.325mm;
14 minute surface is R14=-28.091 ~-26.985mm, D14=5.932 ~ 6.060mm, ψ 14=7.137 ~ 7.285mm;
15 minute surface is R15=40.957 ~ 42.215mm, D15=7.912 ~ 8.080mm, ψ 15=5.441 ~ 5.560mm;
16 minute surface is R16=-13.645 ~-12.970mm, D16=2.457 ~ 2.535mm, ψ 16=3.241 ~ 3.345mm;
17 minute surface is R17=18.323 ~ 19.080mm, D17=5.041 ~ 5.150mm, ψ 17=3.141 ~ 3.245mm;
18 minute surface is R18=-5.901 ~-5.606mm, D18=2.457 ~ 2.535mm, ψ 18=3.017 ~ 3.115mm;
19 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 clear aperature of the first minute surface, the implication of R2-R19, D2-D19 and ψ 2-ψ 19 the like, the structural parameters of nineteen minute surface see the following form:
The structural parameters of table 1 nineteen minute surface
Preferably, the focal length of described first lens is 39.87mm, the focal length of the second lens is 46.54mm, the balsaming lens group focal length of the 3rd lens, the 4th lens and the 5th lens combination is-758.05mm, the balsaming lens group focal length of the 6th lens, 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, and the balsaming lens group focal length of the 11 lens, the 12 lens and the 13 lens combination is-6.94mm.
Preferably, refractive index/the Abbe number (nd/vd) of described first lens is 1.80166/44.26, refractive index/the Abbe number of the second lens is 1.43335/94.52, refractive index/Abbe number the 1.85544/36.59 of the 3rd lens, 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 11 lens is 1.85544/36.59, refractive index/the Abbe number of the 12 lens is 1.92286/20.88, refractive index/the Abbe number of the 13 lens is 1.85544/36.59.
Preferably, its maximum field of view is 50mm.
Micro objective of the present invention, whole employing spheric glass, process with characterization processes completely compatible with existing optical mirror slip, low cost of manufacture, and under the structural parameters of the nineteen minute surface provided in the present invention, can realize the visual field increasing micro objective, the visual field of micro objective can reach 50mm, reaches the effect significantly increasing micro objective visual field completely.
3. beneficial effect
Compared to prior art, beneficial effect of the present invention is:
(1) micro objective of the present invention, all adopts spheric glass, processes with characterization processes completely compatible, low cost of manufacture with existing optical mirror slip;
(2), under the structural parameters of nineteen minute surface that the present invention provides, can realize the visual field increasing micro objective, the visual field of micro objective can reach 50mm, reaches the effect significantly increasing micro objective visual field completely;
(3) structure of the present invention is simple, reasonable in design, is easy to manufacture.
Accompanying drawing explanation
Fig. 1 is the structural representation of micro objective of the present invention;
Fig. 2 is under ZEMAX software simulation goes out embodiments of the invention 1 parameter, the parameter list of the visual field of micro objective;
Fig. 3, Fig. 4, Fig. 5 and Fig. 6 are that ZEMAX software simulation goes out under Fig. 2 visual field imposes a condition, micro objective image quality design sketch; Wherein Fig. 3 is optical path difference, its horizontal ordinate is normalization aperture, ordinate is the optical path difference of reference chief ray in units of wave number, Fig. 4 is the monochromatic encircled energy based on diffraction, its horizontal ordinate is the radius of diffraction pattern, ordinate is that energy in current radius accounts for the number percent of gross energy, Fig. 5 is polychromatic light optical transfer function, its horizontal ordinate is spatial frequency, and ordinate is transfer function values, Fig. 6 is ripple difference, and it is the optical path difference between actual corrugated and reference sphere.
In figure: L1-first lens; L2-second lens; L3-the 3rd lens; L4-the 4th lens; L5-the 5th lens; L6-the 6th lens; L7-the 7th lens; L8-the 8th lens; L9-the 9th lens; L10-the tenth lens; L11-the 11 lens; L12-the 12 lens; L13-the 13 lens.
Embodiment
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 micro objective, comprise 13 spherical lenses of shaft device of sharing the same light, be arranged in order to image space from object space, be respectively from object space to 13 of image space spherical lenses: the first lens L1, the 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 11 lens L11, the 12 lens L12 and the 13 lens L13, first lens L1 is concave surface towards object space, is convex surface towards image space, second lens L2 is convex surface towards object space, is 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 is convex surface towards object space, are concave surface towards image space, 4th lens L4 is convex surface towards object space, is convex surface towards image space, 5th lens L5 is concave surface towards object space, be convex surface towards image space, 3rd lens L3 towards the concave surface of image space and the 4th lens L4 glued together towards the convex surface of object space, the 4th lens L4 is combined towards the convex surface of image space and the 5th lens L5 towards the concave glue of object space, 6th lens L6, the 7th lens L7 and the 8th lens L8 are combined as balsaming lens group, and wherein the 6th lens L6 is convex surface towards object space, are concave surface towards image space, 7th lens L7 is convex surface towards object space, is concave surface towards image space, 8th lens L8 is convex surface towards object space, be convex surface towards image space, 6th lens L6 towards the concave surface of image space and the 7th lens L7 glued together towards the convex surface of object space, the 7th lens L7 towards the concave surface of image space and the 8th lens L8 glued together towards the convex surface of object 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 object space, is convex surface towards image space, tenth lens L10 is concave surface towards object space, is concave surface towards image space, and the 9th lens L9 is combined towards the convex surface of image space and the tenth lens L10 towards the concave glue of object space, 11 lens L11, the 12 lens L12 and the 13 lens L13 are combined as balsaming lens group, and wherein the 11 lens L11 is concave surface towards object space, are concave surface towards image space, 12 lens L12 is convex surface towards object space, be convex surface towards image space, 13 lens L13 is concave surface towards object space, be concave surface towards image space, 11 lens L11 towards the concave surface of image space and the 12 lens L12 glued together towards the convex surface of object space, the 12 lens L12 is combined towards the convex surface of image space and the 13 lens L13 towards the concave glue of object space, above-mentioned 13 lens are 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 is the 3rd minute surface towards the convex surface of object space, second lens L2 is the 4th minute surface towards the convex surface of image space, 3rd lens L3 is the 5th minute surface towards the convex surface of object space, 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 is the 8th minute surface towards the convex surface of image space, 6th lens L6 is the 9th minute surface towards the convex surface of object space, 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 11 minute surface, 8th lens L8 is the 12 minute surface towards the convex surface of image space, 9th lens L9 is the 13 minute surface towards the convex surface of object space, the cemented surface of the 9th lens L9 and the tenth lens L10 is the 14 minute surface, tenth lens L10 is the 15 minute surface towards the concave surface of image space, 11 lens L11 is the 16 minute surface towards the concave surface of object space, the cemented surface of the 11 lens L11 and the 12 lens L12 is the 17 minute surface, the cemented surface of the 12 lens L12 and the 13 lens L13 is the 18 minute surface, 13 lens L13 is the 19 minute surface towards the concave surface of image space, the structural parameters of nineteen minute surface are:
The structural parameters of table 2 embodiment 1 nineteen minute surface
Described in it, the focal length of described first lens is 39.87mm, the focal length of the second lens is 46.54mm, the balsaming lens group focal length of the 3rd lens, the 4th lens and the 5th lens combination is-758.05mm, the balsaming lens group focal length of the 6th lens, 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, and the balsaming lens group focal length of the 11 lens, the 12 lens and the 13 lens combination is-6.94mm.
Refractive index/the Abbe number (nd/vd) also having the first lens described in the present embodiment is in addition 1.80166/44.26, refractive index/the Abbe number of the second lens is 1.43335/94.52, refractive index/Abbe number the 1.85544/36.59 of the 3rd lens, 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 11 lens is 1.85544/36.59, refractive index/the Abbe number of the 12 lens is 1.92286/20.88, refractive index/the Abbe number of the 13 lens is 1.85544/36.59.
Gone out the experimental result of above parameter by ZEMAX software simulation, 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 micro objective.As can be seen from the parameter of Fig. 2, the visual field of its micro objective is 50mm.Reach the visual field of significantly improving micro objective completely.The visual field that its experimental result reaches micro objective is equally 50mm, reaches the effect significantly increasing micro objective visual field completely.
What Fig. 3 optical path difference was shown is under Large visual angle, and the situation of dispersion, as can be seen from image, under different visual field, optical path difference relation under the pupil coordinate of its meridional component and sagitta of arc component, X, Y represent sagitta of arc component and meridional component respectively, and the maximum perpendicular ratio of image is ± 5.000 wavelength, , see figure from left to right from top to bottom, the first width image represents that visual field point is 0.00mm, optical path difference curve map under the pupil coordinate of its meridional component and sagitta of arc component, and take abscissa axis as benchmark, it is 0.546 that each curve from the bottom to top represents wavelength respectively, 0.644, 0.480, the curve of 0.436, the second width image represents that visual field point is 12.50mm, optical path difference curve map under the pupil coordinate of its meridional component and sagitta of arc component, and take abscissa axis as benchmark, it is 0.546 that each curve from the bottom to top represents wavelength respectively, 0.644, 0.480, the curve of 0.436, the 3rd width image represents that visual field point is 17.68mm, and optical path difference curve map under the pupil coordinate of its meridional component and sagitta of arc component take abscissa axis as benchmark, and it is 0.546 that each curve from the bottom to top represents wavelength respectively, 0.644, 0.480, the curve of 0.436, the 4th width image represents that visual field point is 21.65mm, and optical path difference curve map under the pupil coordinate of its meridional component and sagitta of arc component take abscissa axis as benchmark, and it is 0.546 that each curve from the bottom to top represents wavelength respectively, 0.644, 0.480, the curve of 0.436, the 5th width image represents that visual field point is 25.00mm, and optical path difference curve map under the pupil coordinate of its meridional component and sagitta of arc component take abscissa axis as benchmark, and it is 0.546 that each curve from the bottom to top represents wavelength respectively, 0.644, 0.480, the curve of 0.436.Curve wherein in every secondary curve map is the closer to abscissa axis, and its optical path difference is better, and the dispersion that can be embodied whole visual field by image is better.
What the monochromatic encircled energy based on diffraction of Fig. 4 was shown is under Large visual angle, embody reasonable encircled energy, as can be seen from image, make a datum line, each curve is crossing with datum line from the bottom to top, its every bar curve represents that visual field point is 25.00mm respectively, 21.65mm, 17.68mm, 0.00mm, during 12.50mm, relation between the energy percentage of visual field and spot radius, wherein go up most the relation that a curve is ideally energy percentage and spot radius, other curves therewith between ideal curve gap the smaller the better, the good capability set moderate in whole visual field can be embodied from image.
What Fig. 5 polychromatic light optical transfer function was shown is under Large visual angle, can find out that its contrast is very good, and as can be seen from image, in image, T is meridional component, and S is sagitta of arc component, make a datum line, each curve is crossing with datum line from the bottom to top, its Article 1 curve represents that visual field point is the transport function of the meridional component of 25.00mm, Article 2 curve represents that visual field point is the transport function of the meridional component of 21.65mm, Article 3 curve represents that visual field point is the transport function of the meridional component of 17.68mm, Article 4 curve represents that visual field point is the transport function of the meridional component of 12.50mm, Article 5 curve represents that visual field point is the transport function of the sagitta of arc component of 25.00mm, Article 6 curve represents that visual field point is the transport function of the sagitta of arc component of 21.65mm, Article 7 curve represents that visual field point is the transport function of the sagitta of arc component of 17.68mm, Article 8 curve represents that visual field point is the transport function of the meridional component of 0.00mm and the transport function of sagitta of arc component, Article 9 curve represents that visual field point is the transport function of the sagitta of arc component of 12.50mm.Wherein Article 10 curve is transfer curve ideally, and other curves therewith ideal curve are better close to expression performance, can find out that its contrast of whole visual field is very good by image.
What Fig. 6 ripple difference was shown is under Large visual angle, and ripple difference and theoretical value are close to perfect.
Embodiment 2
With embodiment 1, difference is the structural parameters of nineteen minute surface, specifically sees the following form:
The structural parameters of nineteen minute surface in table 3 embodiment 2
The visual field that its experimental result reaches micro objective is equally 50mm, reaches the visual field significantly increasing micro objective completely.Embodiment 3
With embodiment 1, difference is the structural parameters of 14 minute surfaces, specifically sees the following form:
The structural parameters of nineteen minute surface in table 4 embodiment 3
The visual field that its experimental result reaches micro objective is equally 50mm, reaches the effect significantly increasing micro objective visual field completely.
Claims (5)
1. a micro objective, comprise 13 spherical lenses of shaft device of sharing the same light, be arranged in order from object space to image space, be respectively from object space to 13 of image space spherical lenses: 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), 11 lens (L11), 12 lens (L12) and the 13 lens (L13), it is characterized in that: the first lens (L1) are concave surface towards object space, is convex surface towards image space, second lens (L2) are convex surface towards object space, 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 object space, are concave surface towards image space, 4th lens (L4) are convex surface towards object space, are convex surface towards image space, 5th lens (L5) are concave surface towards object space, be convex surface towards image space, 3rd lens (L3) towards the concave surface of image space and the 4th lens (L4) glued together towards the convex surface of object space, the 4th lens (L4) are combined towards the convex surface of image space and the 5th lens (L5) towards the concave glue of object space, 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 object space, are concave surface towards image space, 7th lens (L7) are convex surface towards object space, are concave surface towards image space, 8th lens (L8) are convex surface towards object space, be convex surface towards image space, 6th lens (L6) towards the concave surface of image space and the 7th lens (L7) glued together towards the convex surface of object space, the 7th lens (L7) towards the concave surface of image space and the 8th lens (L8) glued together towards the convex surface of object 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 object space, are convex surface towards image space, tenth lens (L10) are concave surface towards object space, 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 object space, 11 lens (L11), the 12 lens (L12) and the 13 lens (L13) are combined as balsaming lens group, and wherein the 11 lens (L11) are concave surface towards object space, are concave surface towards image space, 12 lens (L12) are convex surface towards object space, be convex surface towards image space, 13 lens (L13) are concave surface towards object space, be concave surface towards image space, 11 lens (L11) towards the concave surface of image space and the 12 lens (L12) glued together towards the convex surface of object space, the 12 lens (L12) are combined towards the convex surface of image space and the 13 lens (L12) towards the concave glue of object space.
2. a kind of micro objective according to claim 1, it is characterized in that: described 13 lens are 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 object space, 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 object space, 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 object space, 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 11 minute surface, 8th lens (L8) are the 12 minute surface towards the convex surface of image space, 9th lens (L9) are the 13 minute surface towards the convex surface of object space, the cemented surface of the 9th lens (L9) and the tenth lens (L10) is the 14 minute surface, tenth lens (L10) are the 15 minute surface towards the concave surface of image space, 11 lens (L11) are the 16 minute surface towards the concave surface of object space, the cemented surface of the 11 lens (L11) and the 12 lens (L12) is the 17 minute surface, the cemented surface of the 12 lens (L12) and the 13 lens (L13) is the 18 minute surface, 13 lens (L13) are the 19 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;
11 minute surface is R11=12.205 ~ 12.715mm, D11=5.932 ~ 6.060mm, ψ 11=9.089 ~ 9.272mm;
12 minute surface is R12=-124.989 ~-123.738mm, D12=0.283 ~ 0.305mm, ψ 12=8.853 ~ 9.040mm;
13 minute surface is R13=17.398 ~ 18.115mm, D13=5.932 ~ 6.060mm, ψ 13=8.152 ~ 8.325mm;
14 minute surface is R14=-28.091 ~-26.985mm, D14=5.932 ~ 6.060mm, ψ 14=7.137 ~ 7.285mm;
15 minute surface is R15=40.957 ~ 42.215mm, D15=7.912 ~ 8.080mm, ψ 15=5.441 ~ 5.560mm;
16 minute surface is R16=-13.645 ~-12.970mm, D16=2.457 ~ 2.535mm, ψ 16=3.241 ~ 3.345mm;
17 minute surface is R17=18.323 ~ 19.080mm, D17=5.041 ~ 5.150mm, ψ 17=3.141 ~ 3.245mm;
18 minute surface is R18=-5.901 ~-5.606mm, D18=2.457 ~ 2.535mm, ψ 18=3.017 ~ 3.115mm;
19 minute surface is R19=10.679 ~ 11.010mm, D19=199.109 ~ 201.078mm, ψ 19=2.749 ~ 2.868mm.
3. a kind of micro objective 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, 11 lens, the balsaming lens group focal length of the 12 lens and the 13 lens combination is-6.94mm.
4. a kind of micro objective 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, refractive index/Abbe number the 1.85544/36.59 of the 3rd lens, 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 11 lens is 1.85544/36.59, refractive index/the Abbe number of the 12 lens is 1.92286/20.88, refractive index/the Abbe number of the 13 lens is 1.85544/36.59.
5. according to a kind of micro objective in claim 1,2 or 3 described in any one, it is characterized in that: described micro objective maximum field of view is 50mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061862A (en) * | 2018-08-27 | 2018-12-21 | 中国科学院苏州生物医学工程技术研究所 | A kind of micro objective of big field of view number |
| CN109298507A (en) * | 2017-07-25 | 2019-02-01 | 宁波舜宇车载光学技术有限公司 | Optical lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109298507A (en) * | 2017-07-25 | 2019-02-01 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN109298507B (en) * | 2017-07-25 | 2021-01-08 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN109061862A (en) * | 2018-08-27 | 2018-12-21 | 中国科学院苏州生物医学工程技术研究所 | A kind of micro objective of big field of view number |
| CN109061862B (en) * | 2018-08-27 | 2021-01-15 | 中国科学院苏州生物医学工程技术研究所 | Microscope objective lens with large visual field number |
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