CN107976794A - A kind of variable mating plate thickness and the mating plate of length illuminate microscopical lighting system - Google Patents

A kind of variable mating plate thickness and the mating plate of length illuminate microscopical lighting system Download PDF

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CN107976794A
CN107976794A CN201810031689.2A CN201810031689A CN107976794A CN 107976794 A CN107976794 A CN 107976794A CN 201810031689 A CN201810031689 A CN 201810031689A CN 107976794 A CN107976794 A CN 107976794A
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mating plate
group
zoom
length
burnt
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CN107976794B (en
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曾春梅
姜连
马锁冬
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Suzhou University
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Suzhou University
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00Microscopes
    • G02B21/0004Microscopes specially adapted for specific applications
    • G02B21/002Scanning microscopes
    • G02B21/0024Confocal scanning microscopes (CSOMs) or confocal "macroscopes"; Accessories which are not restricted to use with CSOMs, e.g. sample holders
    • G02B21/0032Optical details of illumination, e.g. light-sources, pinholes, beam splitters, slits, fibers
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938Using specific optical elements
    • G02B27/095Refractive optical elements
    • G02B27/0955Lenses
    • G02B27/0966Cylindrical lenses

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Microscoopes, Condenser (AREA)

Abstract

The invention belongs to micro-imaging technique field, and in particular to a kind of mating plate illuminates microscope illumination light path;A kind of variable mating plate thickness and the mating plate illumination microscope illumination light path system of length are provided:Included successively by thing side to image side along optical axis arrangement:Laser light source, four constituent element mechanical compensations of full spherical mirror are without burnt zoom beam-expanding system, cylindrical lens, microcobjective;The light sent from laser light source, by the change that outgoing laser beams bore is realized without burnt zoom beam-expanding system, again a kind of piece light is formed by the cylindrical lens that rotation axis is rotated by 90 ° of optical axis by one, the piece light formed goes abatement due to the spherical aberration produced without burnt zoom beam-expanding system and cylindrical lens by an aplanasia microcobjective again, and the light intensity of whole mating plate can be made more uniform, the observation to the biological specimen in the range of certain size can be realized in the case where being changed without mating plate lighting system.

Description

A kind of variable mating plate thickness and the mating plate of length illuminate microscopical lighting system
Technical field
The invention belongs to micro-imaging technique field, and in particular to a kind of mating plate illuminates microscope illumination light path.
Background technology
Mating plate illumination microscope is a kind of new light microscope.It is different from traditional fluorescence microscope, mating plate illumination Microscopical illumination path is mutually perpendicular to fluorescence detection light path.Illuminating bundle forms within the specific limits by cylindrical lens Very thin thickness, well-proportioned sheet beam, and detect light path and detection imaging, exciting light are carried out in the direction vertical with illumination path Beam is limited near detection object lens focal plane.The phototoxicity of mating plate illumination microscope imaging is weak, and image taking speed is fast, is adapted for living Body tissue three-dimensional is imaged and long-time real time imagery, can obtain the real-time dynamic of cell and subcellsular level.Therefore, mating plate shines Obvious micro mirror has very important meaning for life science.
The microscopical layer of mating plate illumination is cut ability and is mainly determined by mating plate thickness, and its visual field is exactly the length of whole mating plate Degree.3D figure such as the attached drawings 1 of mating plate show that it is Rayleigh that its thickness, which is defined as laser by the size (w) with a tight waist after illumination objective lens, visual field, Distance (L), clear aperture are defined as mating plate height (h).Observe various sizes of sample, it is desirable to mating plate thickness and length also have Institute is different.What the microscopical mating plate thickness of existing most of mating plate and length were to determine, so to different size samples This observation just needs replacing different types of mating plate microscope, and this greatly limits mating plate to illuminate microscopical use scope. Since the shape of mating plate is related with the laser beam bore for inciding cylindrical mirror, this patent proposes a kind of nothing based on full spherical mirror The design of burnt zoom beam-expanding system is to obtain the new method of the mating plate of thickness and length consecutive variations so that is illuminated in a mating plate Accomplish the observation to different size samples in a certain range on microscope.
2011G.Ritter et al.[1]Devise a full cylindrical mirror without burnt zoom beam-expanding system, it expands ratio For 6.3, and it is applied in mating plate illumination microscope, realizes the observation to different size samples.But due to its full column It is smaller that what face mirror system was realized expand, and the different size ranges of the sample that can be observed are also smaller;And due to whole system For full cylindrical mirror, processing and adjustment are all especially difficult, and manufacture and assembly cost are very high.
[1]G,Ritter,Jan-Hendrik,Spille,Tim,Kaminski,and,Ulrich, Kubitscheck*.A cylindrical zoom lens unit for adjustable optical sectioning in light sheet microscopy[J].OSA,2010,2(138857):185-193。
Changchun University of Science and Technology Liu Huan in 2010 is precious, An Zhiyong et al. have developed a expand than the three-component zooming for 2-12 Beam-expanding system, is mainly used in laser radar and laser range finder[2].Laser is expanded although also achieving, due to The overall length of the system changes with expanding than change, it is impossible to applied in mating plate fluorescent illumination microscope.
[2] Liu Huanbao, peace will is brave, and high Yu contains, and Xiao makees a kind of river Design for Laser Expanding Optical System with Variable Focus [J] Changchun reason Work college journal (natural science edition), 2010,33 (04):43-45.
The content of the invention
The object of the present invention is to provide a kind of variable mating plate thickness and the mating plate of length to illuminate microscope illumination light path system, In the case where being changed without mating plate lighting system, the observation to the biological specimen in the range of certain size is realized.
To achieve the above object of the invention, the technical scheme is that:
A kind of variable mating plate thickness and the mating plate of length illuminate microscopical lighting system, are included successively by thing side to image side Along optical axis arrangement:Laser light source, without burnt zoom beam-expanding system, cylindrical lens, microcobjective, wherein described expand without burnt zoom Beam system for full spherical mirror four constituent element mechanical compensations without burnt zoom beam-expanding system, the four constituent element mechanical compensations are without burnt zoom Beam-expanding system fixes group, zoom group, compensation group and fixes group afterwards before being followed successively by from thing side to image side, Jiao of the preceding fixed group Away from for just, the focal length of zoom group be bear, the focal length of compensation group be bear, the focal length of fixed group is just afterwards;Sent out from the laser light source The light gone out is used to the collimated light beam being modulated to column by first fixed group without burnt zoom beam-expanding system, the cylindrical lens After being imaged at the front focus of fixed group, the light from rear fixed group outgoing is collimated light beam, is passed through for surface wave, zoom group and compensation group It is compressed in by the cylindrical lens that rotation axis is rotated by 90 ° of optical axis at postposition microcobjective front focus, finally by the micro- thing of aplanasia Mirror eliminates the spherical aberration introduced without burnt zoom beam-expanding system and cylindrical lens, obtains required mating plate.
Above-mentioned four constituent elements mechanical compensation is without burnt zoom beam-expanding system, and the distance between fixed group and rear fixed group are kept before it It is constant, realize the overall length of whole lighting system not with expand than change and the technique effect that changes.Such lighting system Overall length is fixed, and can simplify the Machine Design of system, convenient for users to the observation to sample.
Above-mentioned four constituent elements mechanical compensation without burnt zoom beam-expanding system, first fixed group, zoom group, compensation group and rear fixed group Focal length is followed successively by " positive and negative, negative, positive ".Can realize shorter system overall length in the case of system visual field is less, be conducive to be The miniaturization of system;This setting, realizes:System overall length is fixed;System overall length is shorter;Avoid higher laser energy damage mirror The technique effect of piece.
What the aplanasia microcobjective was brought has the technical effect that:Both eliminated without burnt zoom beam-expanding system and cylindrical lens The spherical aberration of introducing, reduces design and difficulty of processing without burnt zoom beam-expanding system and cylindrical lens, and makes the light intensity of mating plate more Uniformly.
Preferably:Above-mentioned four constituent elements mechanical compensation is without burnt zoom beam-expanding system, system stop laser before first fixed group The place with a tight waist of light source, this setting can fix stop position and size, greatly reduce the difficulty of Machine Design, and make system Total light energy is constant.
Preferably:First fixed group is made of an one negative, positive two panels simple lens, and zoom group is a monolithic negative lens, compensation group It is that two panels bears simple lens, rear fixed group is two panels positive single lens.That brings has the technical effect that:Preceding fixed group for it is one negative, one just two Piece simple lens, first piece of negative lens cause less laser beam to increase, avoid laser and be focused into smaller focus on eyeglass, Eyeglass is damaged, rear a piece of positive lens compression light drift angle causes whole system bore to be unlikely to excessive.Zoom group is selected single negative Lens so that whole system structure is compacter.Compensation group uses two panels to bear simple lens make it that whole compensation group focal power is negative While so that focal power distribution is more uniform, avoids drift angle larger on single refraction sphere.Fixation is organized as two panels just afterwards Simple lens, while fixed group focal power is positive after guarantee is whole, mutually compensates for the spherical aberration of the two panels negative lens of compensation group, subtracts Small system aberration.
The incident light that laser light source is sent in above-mentioned technical proposal shoot laser beam mouth after without burnt zoom beam-expanding system Footpath is 1-10mm.Shoot laser beam bore has the technical effect that for what 1-10mm was brought:It is emitted after without burnt zoom beam-expanding system Laser beam is most absolutely between twenties microns, can be adapted for observation in several microns by the mating plate thickness that cylindrical lens are adjusted to Several animal and plant cells and embryo's sample;In addition shoot laser beam bore is 1-10mm after without burnt zoom beam-expanding system, also Can guarantee that mating plate width and light intensity in rational scope:If shoot laser beam bore is too small, obtained mating plate width is small, can Sample range for observation also diminishes, if shoot laser beam bore is excessive, can increase the size of rear end cylindrical lens, and meeting Reduce the light intensity in mating plate width range.
The zoom ratio of no burnt zoom beam-expanding system is 10 times.That brings has the technical effect that:10 times are selected to expand without burnt zoom Beam system both can obtain required mating plate thickness and length in the case where being not required multistage to expand, and reduce whole system Design difficulty.In addition, 10 times of beam-expanding systems also cause the rear part lens hole footpath of system to be unlikely to excessive, and increase processing and The difficulty of adjustment.
Preferable cylindrical lens are plano-convex cylindrical lens in above-mentioned technical proposal.The incident light that laser light source is sent passes through to be become without Jiao After times beam-expanding system then vertical incidence modulates light in blocks, the skill brought to plano-convex cylindrical lens by the pillar face of plano-convex cylindrical lens Art effect is:1st, circular light spot is compressed into wire hot spot;2nd, system spherical aberration is reduced;3rd, plano-convex cylindrical lens compared to biconvex or The adjustment easy to process of person's concave-concave cylindrical lens.
In specific above-mentioned technical proposal:The image-side numerical aperture NA=0.25 of aplanasia microcobjective, back work distance from More than or equal to 7mm.The setting of image-side numerical aperture NA=0.25 is effectively guaranteed luminous flux, difference is expanded the mating plate than under It is attained by due layer and cuts ability;Back work distance can not only ensure sample placement space from the setting more than or equal to 7mm, but also not Whole system can be made to seem lengthy.
To sum up, the order passed through in the technical program by light, the light respectively sent from laser light source, by four constituent elements Mechanical compensation realizes the change of outgoing laser beams bore without burnt zoom beam-expanding system, then is revolved by one by rotation axis of optical axis Turn 90 ° of cylindrical lens and form a kind of lamella light, the lamella light formed again by an aplanasia microcobjective go abatement due to The spherical aberration that no burnt zoom beam-expanding system and cylindrical lens produce;Along optical axis direction, incident laser enters without burnt zoom beam-expanding system It is later collimated, then it is compressed in its focal plane by cylindrical lens.Microcobjective is placed on cylindrical lens post-compensation system spherical aberration, So that the light intensity of whole mating plate keeps uniformity.Lighting system is except a cylindrical lens are employed, its lap is all sphere, this causes The processing of whole system and assembly cost are greatly lowered.
Brief description of the drawings
Fig. 1:The mating plate 3D figures that mating plate illumination microscope is formed;
Fig. 2:System it is low expand than when light path schematic diagram;
Fig. 3:System expanded in than when light path schematic diagram;
Fig. 4:System height expand than when light path schematic diagram;
Fig. 5:Point range figure of the system in low expand than (1);
Fig. 6:Point range figure when system is expanded in than (6);
Fig. 7:Point range figure of the system when height is expanded than (10);
Fig. 8:Physical optics of the system in low expand than (1) propagates (POP) figure;
Fig. 9:Physical optics when system is expanded in than (6) propagates (POP) figure;
Figure 10:Physical optics of the system when height is expanded than (10) propagates (POP) figure;
Wherein:
1 is first fixed group;
2 be zoom group;
3 be compensation group;
4 be after fix group;
5 be cylindrical lens;
6 be microcobjective.
Embodiment
The invention will be further described with reference to the accompanying drawings and embodiments:
Embodiment one:
A kind of variable mating plate thickness and the mating plate of length illuminate microscopical lighting system, as shown in Figure 1, by thing side to picture Side is included along optical axis arrangement successively:Laser light source, without burnt zoom beam-expanding system, cylindrical lens 5, microcobjective 6.The laser Optical source wavelength λ=532nm, waist radius 0.5mm.No burnt zoom beam-expanding system for full spherical mirror four constituent element mechanical compensations without Burnt zoom beam-expanding system, the four constituent element mechanical compensations fixed group before being followed successively by without burnt zoom beam-expanding system from thing side to image side 1st, zoom group 2, compensation group 3, rear fixed group 4, each constituent element focal length are followed successively by positive and negative, negative, positive, are sent from the laser light source Light is fixed at the front focus of group after group, zoom group, compensation group are fixed before without burnt zoom beam-expanding system and is imaged on, from rear fixation The light of group outgoing is collimated light beam, by burnt before being compressed in postposition microcobjective as the cylindrical lens that rotation axis is rotated by 90 ° using optical axis At point, the spherical aberration introduced without burnt zoom beam-expanding system and cylindrical lens is eliminated finally by anaberration microcobjective, is obtained required The mating plate wanted.
A kind of variable mating plate thickness and the mating plate of length illuminate microscopical lighting system, by attached drawing 2- Fig. 4 it is low/medium/ Height is expanded than light path schematic diagram, designs a kind of mating plate illumination microscope illumination system, and optical system structure parameter is as shown in table 1, In addition to being wherein cylinder except 16 faces, its lap is sphere.Wherein:Diaphragm face is located at face 1, and face 2 to face 15 expands for system zoom System, face 16 to face 17 are the cylindrical lens being rotated by 90 ° using optical axis as rotation axis.Virtual face 18 is guarantee cylindrical lens to microcobjective Between distance be equal to the sum of objective focal length and cylindrical lens focal length set by, face 19 to face 24 is aplanasia microcobjective, and face 25 is light Girdle the waist place for piece center, i.e. image space.Table 2 lists face sequence number 5,7,11 in table 1 and corresponds to three airspaces, is respectively that zoom expands When before the distance between fixed group and zoom group, zoom group and compensation group, compensation group and rear fixed group.Structure 1-3 is respectively to become Burnt beam-expanding system is being expanded than the airspace for 1,6 and 10.
1 optical system structure parameter of table
Face sequence number Vertex curvature radius R (mm) Thickness (mm) Half bore Material
1 Infinity 12 2
2 -6.442 1 2 H-LAK11
3 -7.214 2 2.1
4 9.561 1 2.2 H-ZK9B
5 17.024 Variable air interval 2.1
6 7.612 0.8 1.6 H-BAK4
7 3.915 Variable air interval 1.5
8 6.724 1.8 2.6 H-LAK51A
9 5.808 7.7 2.4
10 -12.631 3 3.2 H-LAK51A
11 19.772 Variable air interval 3.6
12 -110.458 10.9 15 H-ZLAF71
13 -53.082 3.5 17.6
14 -4176.809 9.6 19.1 H-ZLAF71
15 -78.267 5 20
16 Infinity/76.793 5 20 H-K9L
17 Infinity 145.6 19.8
18 Infinity 73.4 19.951
19 63.305 19.1 20 H-BAK2
20 -75.330 20 20 ZF2
21 -552.152 41.3 20
22 30.054 16.9 20 H-BAK2
23 -27.715 20.000 20 ZF2
24 51.641 9.1 20
25 Infinity / / /
2 difference of table expand than when airspace (unit:mm)
Fig. 5-Fig. 7 for the lighting system respectively it is basic, normal, high expand than when point range figure, three kinds of structures of corresponding table 2.From Difference expand than point range figure in as can be seen that with expand than increase, the length of point range figure shortening.Indicate and expand ratio The length of bigger mating plate is shorter, and thickness is thinner.
The physical optics of the lighting system propagates (POP) figure respectively as Figure 8-Figure 10, three kinds of structures of corresponding table 2. Scheme from POP it can be seen that it is basic, normal, high expand than when whole system waist radius realize change from big to small, Rayleigh Distance from big to small, can meet the illumination to different size samples in a certain range.
From the point of view of design result, which realizes mating plate size in the case of the complicated zoom system, pancreatic system of no addition Change, reduce material and processing cost.Meanwhile system does not add yet and is difficult to the aspherical of adjustment.Entirely become in this example The overall length of burnt beam-expanding system is not above 120mm, compared to other overall lengths in the zoom beam-expanding system of 200mm or so, shortens 80mm, makes lighting system compacter.
The technical program unspecified part belongs to technology well known to those skilled in the art.

Claims (6)

1. a kind of variable mating plate thickness and the mating plate of length illuminate microscopical lighting system, edge is included by thing side to image side successively Optical axis arrangement:Laser light source, without burnt zoom beam-expanding system, cylindrical lens, microcobjective, wherein described expand without burnt zoom System expands for four constituent element mechanical compensations of full spherical mirror without burnt zoom beam-expanding system, the four constituent element mechanical compensations without burnt zoom Beam system fixes group, zoom group, compensation group and fixes group, described first fixed group, zoom afterwards before being followed successively by from thing side to image side The focal length of group, compensation group and rear fixed group is followed successively by positive and negative, negative, positive, and the light sent from the laser light source passes through without burnt zoom The light of beam-expanding system outgoing is collimated light beam, and the microcobjective is aplanasia microcobjective.
2. variable mating plate thickness according to claim 1 and the mating plate of length illuminate microscopical lighting system, its feature It is:The incident light that the laser light source is sent shoot laser beam bore after without burnt zoom beam-expanding system is 1-10mm.
3. a kind of variable mating plate thickness according to claim 2 and the mating plate of length illuminate microscopical lighting system, its It is characterized in that:The zoom ratio without burnt zoom beam-expanding system is 10 times.
4. variable mating plate thickness according to claim 3 and the mating plate of length illuminate microscopical lighting system, its feature It is:The cylindrical lens are plano-convex cylindrical lens.
5. variable mating plate thickness according to claim 4 and the mating plate of length illuminate microscopical lighting system, its feature It is:The microcobjective is image-side numerical aperture NA=0.25, and back work distance is from the aplanatic lens more than or equal to 7mm.
6. the mating plate of variable mating plate thickness and length according to one of claim 1-5 illuminates microscopical lighting system, Wherein described first fixed group is made of an one negative, positive two panels lens, and zoom group is a piece of negative lens, compensation group by it is one negative, one Just two pieces of lens composition, rear fixed group by one just, a negative two panels lens form.
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Cited By (9)

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CN109060736A (en) * 2018-06-27 2018-12-21 北京天天极因科技有限公司 Mating plate fluorescent microscopic imaging device and detection method for the imaging of transparence drop
CN109143562A (en) * 2018-09-12 2019-01-04 苏州大学 A kind of variable mating plate lighting system based on zoom principle
CN109884801A (en) * 2018-12-31 2019-06-14 苏州大学 Continuous vari-focus laser shaping system
CN110416872A (en) * 2019-07-31 2019-11-05 天津大学 Radian and the tunable arc beam delivery system of width
CN110543004A (en) * 2019-08-27 2019-12-06 杭州图谱光电科技有限公司 Digital microscope objective with high magnification and large zoom ratio
CN110865464A (en) * 2019-11-25 2020-03-06 深圳市深大极光科技有限公司 Laser projection device
CN111240000A (en) * 2020-03-03 2020-06-05 长春理工大学 Fluorescent microscope capable of continuously changing magnification
CN113126273A (en) * 2019-12-30 2021-07-16 长春长光华大智造测序设备有限公司 Bar-shaped illumination optical system of microscope objective
CN115291373A (en) * 2022-07-28 2022-11-04 广州长步道光学科技有限公司 Focal length extension subassembly of FA industrial lens

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Publication number Priority date Publication date Assignee Title
CN109060736A (en) * 2018-06-27 2018-12-21 北京天天极因科技有限公司 Mating plate fluorescent microscopic imaging device and detection method for the imaging of transparence drop
CN109143562A (en) * 2018-09-12 2019-01-04 苏州大学 A kind of variable mating plate lighting system based on zoom principle
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CN109884801A (en) * 2018-12-31 2019-06-14 苏州大学 Continuous vari-focus laser shaping system
CN110416872A (en) * 2019-07-31 2019-11-05 天津大学 Radian and the tunable arc beam delivery system of width
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CN110865464A (en) * 2019-11-25 2020-03-06 深圳市深大极光科技有限公司 Laser projection device
CN113126273A (en) * 2019-12-30 2021-07-16 长春长光华大智造测序设备有限公司 Bar-shaped illumination optical system of microscope objective
CN113126273B (en) * 2019-12-30 2022-12-23 长春长光华大智造测序设备有限公司 Bar-shaped lighting optical system of microobjective
CN111240000A (en) * 2020-03-03 2020-06-05 长春理工大学 Fluorescent microscope capable of continuously changing magnification
CN115291373A (en) * 2022-07-28 2022-11-04 广州长步道光学科技有限公司 Focal length extension subassembly of FA industrial lens

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