CN110398832A - Near-infrared and LONG WAVE INFRARED two waveband microcobjective - Google Patents
Near-infrared and LONG WAVE INFRARED two waveband microcobjective Download PDFInfo
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- CN110398832A CN110398832A CN201910623980.3A CN201910623980A CN110398832A CN 110398832 A CN110398832 A CN 110398832A CN 201910623980 A CN201910623980 A CN 201910623980A CN 110398832 A CN110398832 A CN 110398832A
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- 230000005499 meniscus Effects 0.000 claims abstract description 112
- 230000003287 optical effect Effects 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000037361 pathway Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 21
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims description 12
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 7
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- 238000013461 design Methods 0.000 description 11
- 230000005855 radiation Effects 0.000 description 10
- 230000000007 visual effect Effects 0.000 description 7
- 238000000799 fluorescence microscopy Methods 0.000 description 6
- 241000700608 Sagitta Species 0.000 description 4
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- 230000018109 developmental process Effects 0.000 description 3
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- 238000001514 detection method Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000399 optical microscopy Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 240000008067 Cucumis sativus Species 0.000 description 1
- 235000010799 Cucumis sativus var sativus Nutrition 0.000 description 1
- 101000801088 Homo sapiens Transmembrane protein 201 Proteins 0.000 description 1
- 101100233058 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) IMA2 gene Proteins 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/02—Objectives
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/18—Arrangements with more than one light path, e.g. for comparing two specimens
Abstract
Near-infrared and LONG WAVE INFRARED two waveband microcobjective are related to microcobjective technical field, solve the problems, such as to need the micro-imaging for observing fluorescence information and biological tissue's growth course in biological tissue simultaneously.Including common optical pathways system, short wavelength-NIR system and LONG WAVE INFRARED system, common optical pathways system includes the medium water set gradually, parallel flat, first positive meniscus lens, first diverging meniscus lens and beam splitter, short wavelength-NIR system includes the first diaphragm set gradually, second positive meniscus lens, first cemented doublet and the second cemented doublet, LONG WAVE INFRARED system includes the second diaphragm set gradually, third positive meniscus lens, second diverging meniscus lens, third diverging meniscus lens and the 4th positive meniscus lens, first cemented doublet is even aspheric surface closest to the surface of the second positive meniscus lens and the surface for closing on the second image planes of the 4th positive meniscus lens.The present invention, which can differentiate biological tissue's internal fine structure and observe biological tissue, slowly grows process.
Description
Technical field
The present invention relates to microcobjective systems technology fields, and in particular to near-infrared and the micro- object of LONG WAVE INFRARED two waveband
Mirror.
Background technique
The imaging spectral range of traditional fluorescence has focused largely on visible light to one area of near-infrared (400~900nm), exists
The low disadvantage low with spatial resolution of tissue penetration depths, which greatly limits the applications of fluorescence imaging method.2nd area of near-infrared
Fluorescence imaging (NIR- II, 1000~1700nm) compared to one area of near-infrared in living tissue have less photonic absorption and
Scattering and lower tissue autofluorescence characteristic, can greatly improve the tissue penetration depths and spatial resolution of fluorescence imaging.
Any object that all temperature are higher than absolute zero (i.e. -273 DEG C) in nature can generate infra-red radiation, all may be used
It is considered as the source of infrared radiation, according to the thermal radiation property of biological tissue, chooses the infrared spy of matched (corresponding sensitive wave length)
It surveys device and detects its heat radiation, according to the radiation energy size measured, add reasonable detector by designing corresponding optical system
The infra-red radiation of biological tissue can passively be received, and this radiation information is converted into human eye it is observed that thermal-induced imagery.
We can observe its corresponding structure by thermal-induced imagery, can be used for bio-medical analysis in conjunction with corresponding technological means.
Microcobjective is the important component of optical microscopy, while being also the major contributing portion of microscope imaging performance
Part.In biomedical applications, two area's fluorescence imaging of near-infrared can be observed and be differentiated in biological tissue under dark surrounds
Cucumber and its property.Traditional optical microscopy needs to provide exterior lighting light source, can not be in observation group under dark situations
Knit details and metamorphosis, using LONG WAVE INFRARED heat radiation characteristic we can be by observe it from the characteristic of radiation and grow up
The variation of journey is observed.With the increase of biomedical detection demand, though have multiclass microcobjective in the world at present, it is existing micro-
Object lens are also unable to satisfy requirement of the biomedical aspect field to microcobjective, and therefore, biological tissue can be observed by needing one kind
Internal Fluorescent also observes the microcobjective of its slowly developmental process, studies one kind and can observe biological tissue's Internal Fluorescent and also observes
Slowly the near-infrared of developmental process and LONG WAVE INFRARED two waveband microcobjective are of great significance for biological tissue.
Summary of the invention
To solve the above-mentioned problems, the present invention provides near-infrared and LONG WAVE INFRARED two waveband microcobjective.
Used technical solution is as follows in order to solve the technical problem by the present invention:
Near-infrared and LONG WAVE INFRARED two waveband microcobjective, which is characterized in that including common optical pathways system, short wavelength-NIR
System and LONG WAVE INFRARED system, the common optical pathways system include that the medium water set gradually, parallel flat, the first positive bent moon are saturating
Mirror, the first diverging meniscus lens and beam splitter, the short wavelength-NIR system include the first diaphragm set gradually, the second positive bent moon
Lens, the first cemented doublet and the second cemented doublet, first cemented doublet closest to the second positive meniscus lens
Surface be even aspheric surface, the LONG WAVE INFRARED system includes the second diaphragm set gradually, third positive meniscus lens, second
Diverging meniscus lens, third diverging meniscus lens and the 4th positive meniscus lens, the 4th positive meniscus lens close on the second image planes
Surface is even aspheric surface；
Incident beam is successively incident on after medium water, parallel flat, the first positive meniscus lens and the first diverging meniscus lens
Beam splitter；Short wavelength-NIR wave band light beam in incident beam is incident on short wavelength-NIR system after beam splitter reflects, short
The first image planes are obtained in front of wave near-infrared system；Long wave infrared region light beam in incident beam is incident on after beam splitter transmits
LONG WAVE INFRARED system obtains the second image planes in front of LONG WAVE INFRARED system.
The beneficial effects of the present invention are:
1, near-infrared of the invention and LONG WAVE INFRARED two waveband microcobjective, it is negative curved by the first positive meniscus lens and first
Month lens combination carrys out correcting chromatic aberration, to prevent common optical pathways system residual color difference to short wavelength-NIR system and LONG WAVE INFRARED below
System image quality has an impact.
2, by using the first cemented doublet with even aspheric surface surface in short wavelength-NIR system, in long wave
Using the 4th positive meniscus lens with even aspheric surface surface in infrared system, monochrome correction aberration can be very good, improve
Optical characteristics improves image quality, enhances system resolution.
3, by using common optical pathways system by two different Band fusions of near-infrared and LONG WAVE INFRARED a to system
In, it can be achieved that two wave bands of real-time detection near-infrared and LONG WAVE INFRARED information, have and fluorescence imaging be presented and detects biological group
The ability for knitting growth course is widely used in biomedicine detection and imaging.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of near-infrared of the invention and LONG WAVE INFRARED two waveband microcobjective.
Fig. 2 is the two waveband optic path schematic diagram of near-infrared of the invention and LONG WAVE INFRARED two waveband microcobjective.
Fig. 3 is the optic path signal of the near infrared band of near-infrared of the invention and LONG WAVE INFRARED two waveband microcobjective
Figure.
Fig. 4 is the near infrared band of near-infrared of the present invention and LONG WAVE INFRARED two waveband microcobjective as a height of 0mm of object
MTF curve figure.
Fig. 5 is the near infrared band of near-infrared of the present invention and LONG WAVE INFRARED two waveband microcobjective as a height of 0.8mm of object
MTF curve figure.
Fig. 6 is the near infrared band of near-infrared of the present invention and LONG WAVE INFRARED two waveband microcobjective as a height of 1.5mm of object
MTF curve figure.
Fig. 7 is the curvature of field figure of the near infrared band of near-infrared of the present invention and LONG WAVE INFRARED two waveband microcobjective.
Fig. 8 is the distortion figure of the near infrared band of near-infrared of the present invention and LONG WAVE INFRARED two waveband microcobjective.
Fig. 9 is that the optic path of the long wave infrared region of near-infrared of the invention and LONG WAVE INFRARED two waveband microcobjective is shown
It is intended to.
Figure 10 is the long wave infrared region of near-infrared of the present invention and LONG WAVE INFRARED two waveband microcobjective as a height of 0mm of object
MTF curve figure.
Figure 11 works as a height of 0.8mm of object for the long wave infrared region of near-infrared of the present invention and LONG WAVE INFRARED two waveband microcobjective
When MTF curve figure.
Figure 12 works as a height of 1.5mm of object for the long wave infrared region of near-infrared of the present invention and LONG WAVE INFRARED two waveband microcobjective
When MTF curve figure.
Figure 13 is the curvature of field figure of the long wave infrared region of near-infrared of the present invention and LONG WAVE INFRARED two waveband microcobjective.
Figure 14 is the distortion figure of the long wave infrared region of near-infrared of the present invention and LONG WAVE INFRARED two waveband microcobjective.
In figure: 1, medium water, 2, parallel flat, the 3, first positive meniscus lens, the 4, first diverging meniscus lens, 5, beam splitter,
6, the first diaphragm, the 7, second positive meniscus lens, the 8, first cemented doublet, the 9, second cemented doublet, the 10, first image planes, 11,
Third positive meniscus lens, the 12, second diverging meniscus lens, 13, third diverging meniscus lens, the 14, the 4th positive meniscus lens, 15, second
Image planes.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and examples.
Near-infrared and LONG WAVE INFRARED two waveband microcobjective, the present invention be directed to the short-wave band of near-infrared and LONG WAVE INFRAREDs
The optical system for the microcobjective that the two wave bands of wave band can share.
Near-infrared and LONG WAVE INFRARED two waveband microcobjective of the invention includes common optical pathways system, short wavelength-NIR system
With LONG WAVE INFRARED system.Such as Fig. 1, common optical pathways system includes that the medium water 1 set gradually, parallel flat 2, the first positive bent moon are saturating
Mirror 3, the first diverging meniscus lens 4 and beam splitter 5.Short wavelength-NIR system includes the first diaphragm 6 set gradually, the second positive bent moon
Lens 7, the first cemented doublet 8, the second cemented doublet 9.LONG WAVE INFRARED system includes setting gradually the second diaphragm, third just
Meniscus lens 11, the second diverging meniscus lens 12, third diverging meniscus lens 13, the 4th positive meniscus lens 14.First cemented doublet 8
Including first surface, second surface, third surface, the transmission sequence of light beam is from first surface, to second from the object side to the image side
Third surface is arrived on surface again, and first surface is even aspheric surface, that is to say, that the first cemented doublet 8 closest to second just
The surface of meniscus lens 7 is even aspheric surface.The surface that 4th positive meniscus lens 14 closes on the second image planes 15 is even aspheric surface.
Incident beam includes short wavelength-NIR wave band light beam and long wave infrared region light beam, and index path is as shown in Fig. 2, incidence
Light beam is successively incident on beam splitting after medium water 1, parallel flat 2, the first positive meniscus lens 3, the first diverging meniscus lens 4 from object space
Mirror 5, incident beam are reflected through medium water 1, are assembled, through the refraction of parallel flat 2, through the first positive meniscus lens 3 through the first negative bent moon
Lens 4 are incident on beam splitter 5 after dissipating.Short wavelength-NIR wave band light beam in incident beam, which is incident on beam splitter 5, can occur instead
It penetrates, short wavelength-NIR wave band light beam is the reflected beams of beam splitter 5, and the long wave infrared region light beam in incident beam is incident on point
Beam mirror 5 can transmit, and long wave infrared region light beam is the transmitted light beam of beam splitter 5.Short wavelength-NIR wave band light beam is through beam splitting
Mirror 5 can reflect, and short wavelength-NIR system is incident on after reflection, and the first image planes 10 are obtained in front of short wavelength-NIR system；
The reflected beams are incident on the second positive meniscus lens 7 after the first diaphragm 6 limits beam, successively through the convergence of the second positive meniscus lens 7, first
Cemented doublet 8 is assembled, the second cemented doublet 9 obtains the first image planes 10 after assembling.Long wave infrared region light beam is through beam splitter 5
It is incident on LONG WAVE INFRARED system after transmission, the second image planes 15 are obtained in front of LONG WAVE INFRARED system；Transmitted light beam is through the second diaphragm
Third positive meniscus lens 11 is incident on after limit beam, light beam is successively assembled, through third positive meniscus lens 11 through the second diverging meniscus lens
12 divergings are assembled through third diverging meniscus lens 13, obtain the second image planes 15 after the convergence of the 4th positive meniscus lens 14.First image planes
It is corresponding at 10 to place short wavelength-NIR detector, corresponding placement Long Wave Infrared Probe at the second image planes 15.
In present embodiment, the refractive index of medium water 1 is 1.34, Abbe number 57.9.Parallel flat 2 is that two sides is all flat
The lens in face, 2 material of parallel flat are ZnS.First positive meniscus lens, 3 material is ZnSe, and concave surface is towards object space, incident light
Beam first passes through its concave surface.First diverging meniscus lens, 4 material is ZnS, and towards object space, it is recessed that incident beam first passes through its for concave surface
Face.The material of beam splitter 5 be ZnSe, and beam splitter 5 be coated with close to the surface of object space make short wavelength-NIR reflect and long wave is red
The membrane system of outer transmission.Second positive meniscus lens, 7 material is ZnS, concave surface the first image planes 10 of direction.First cemented doublet 8 and
The material of two cemented doublets 9 is ZnSe and ZnS, and the first cemented doublet 8 is pair that ZnSe lens and ZnS lens compose
Balsaming lens, for ZnSe lens close to object space, ZnS lens are even close to the surface of object space close to image space, and in ZnSe lens
It is secondary aspherical；Second cemented doublet 9 is the cemented doublet that ZnS lens and ZnSe lens compose, and ZnS lens are close to object
Side, ZnSe lens are close to image space.11 material of third positive meniscus lens is Ge and the second diaphragm is located at third positive meniscus lens 11 and leans on
On the surface of nearly object space, concave surface the second image planes 15 of direction.Second diverging meniscus lens, 12 material is ZnS, convex surface direction
Second image planes 15.13 material of third diverging meniscus lens is Ge, concave surface the second image planes 15 of direction.4th diverging meniscus lens, 14 material is
ZnS, concave surface the second image planes 15 of direction and ZnS lens are even aspheric surfaces on the surface close to image space.Present embodiment
In the first diaphragm 6 and the second positive meniscus lens 7 be not overlapped；Second diaphragm and third positive meniscus lens 11 are overlapped, the second diaphragm position
In on the surface that third positive meniscus lens 11 closes on beam splitter 5.7, first pairs of first diaphragm 6, the second positive meniscus lens gluings are saturating
Mirror 8 and the coaxial arrangement of the second cemented doublet 9.Second diaphragm, third positive meniscus lens 11, the second diverging meniscus lens 12, third
Diverging meniscus lens 13 and the coaxial arrangement of the 4th positive meniscus lens 14.Medium water 1, parallel flat 2, the first positive meniscus lens 3, first
Diverging meniscus lens 4 and beam splitter 5 are coaxially disposed.
Near-infrared and the setting of LONG WAVE INFRARED two waveband microcobjective optical index can be found in table 1.
Table 1:
| Optical design parameters | Index request |
| Service band | 1.5~1.7 μm；8~12 μm |
| Numerical aperture | 0.4 |
| Operating distance | 3.5mm |
| Visual field | 2.121mm*2.121mm |
| The curvature of field | <1mm |
| Distortion | < 2% |
Near-infrared structure such as Fig. 3 of near-infrared and LONG WAVE INFRARED two waveband microcobjective, near-infrared and LONG WAVE INFRARED double wave
The short wavelength-NIR optical path of section microcobjective are as follows: incident beam first passes through medium water 1, then passes through parallel flat 2, then passes through
First positive meniscus lens 3 is assembled, and is then dissipated by the first diverging meniscus lens 4, is reflected then in turn through beam splitter 5, then pass through
The first diaphragm 6 is crossed, then the second positive meniscus lens 7 is assembled again, the first cemented doublet 8 is assembled, and finally passes through second pair of gluing
Lens 9 converge in the first image planes 10.The lens data of short wavelength-NIR optical path is shown in Table 2.
For the ease of design when using optical design software Zemax software, in 5 material of near-infrared partial data beam splitter
It is set as MIRROR, the glass material of table 2 corresponds to the INFRARED glass library in Zemax software, and ZnS corresponding is ZNS_
BROAD, ZnSe corresponding are ZNSE, and Ge corresponding is GE_OLD.In table 2, STO indicates diaphragm face, and OBJ indicates object plane, IMA1
Indicate the first image planes 10, the corresponding parallel flat 2 of face serial number 1 and 2, corresponding first positive meniscus lens 3 of face serial number 3,4, face serial number 5,6
Corresponding first diverging meniscus lens 4, the corresponding beam splitter 5 of face serial number 8,9 and 12, corresponding first diaphragm 6 of face serial number 13,15 He of face serial number
16 corresponding second positive meniscus lens 7, the corresponding first pair of gluing 8 of face serial number 17,18 and 19, face serial number 20,22 and 23 corresponding second
Double glued 9, face serial number 21 is virtual face, not shown in the diagram.
Table 2:
As shown in Table 2, it is interrupted in progress optical design using coordinate, it is related to 11 in coordinate discontinuity surface, that is, face serial number 7,10
Parameter is shown in Table 3.
Table 3:
| Face serial number | Y is eccentric | Tilt X |
| 7 | 0 | 45 |
| 10 | 0 | 45 |
| 11 | 0 | 0 |
Wherein inclination X is indicated around the inclined angle of X-axis.
The even aspheric surface mirror surface formula of the first cemented doublet 8 and the 4th positive meniscus lens 14 in the present invention is all full
Foot:
In above formula: h indicates the Y axis coordinate value of each point on lens surface；C is the inverse of the radius of curvature r of lens surface；k
For circular cone coefficient；a1、a2、a3、a4For order aspherical coefficients；Z be it is aspherical along optical axis direction when being highly the position of h, away from
Distance vector height from aspheric vertex of surface.
Table 4 is the even aspheric surface coefficient table of face serial number 17 in table 2, wherein E represents scientific notation,
Table 4:
Fig. 4 to fig. 6 is the MTF curve of the near infrared band of near-infrared of the present invention and LONG WAVE INFRARED two waveband microcobjective,
Fig. 7 is the curvature of field figure of near infrared band, and Fig. 8 is the distortion figure of near infrared band.
LONG WAVE INFRARED structure such as Fig. 9 of near-infrared and LONG WAVE INFRARED two waveband microcobjective, near-infrared and LONG WAVE INFRARED are double
The LONG WAVE INFRARED optical path of wave band microcobjective are as follows: then incident beam first passes through medium water 1 by parallel flat 2, then pass through
First positive meniscus lens 3 is assembled, and is then dissipated by the first diverging meniscus lens 4, is transmitted then in turn through beam splitter 5, then pass through
After crossing the second diaphragm limit beam, successively assembled by third positive meniscus lens 11, by the diverging of the second diverging meniscus lens 12, by the
Three diverging meniscus lenses 13 assemble, finally converge in the second image planes 15 by the 4th positive meniscus lens 14.LONG WAVE INFRARED optical path
Lens data is shown in Table 5.
In table 5, STO indicates diaphragm face, and OBJ indicates that object plane, IMA2 indicate that the second image planes 15, the correspondence of face serial number 1 and 2 are parallel
Corresponding first positive meniscus lens 3 of plate 2, face serial number 3,4, corresponding first diverging meniscus lens 4 of face serial number 5,6, face serial number 8,9 and 12
Corresponding beam splitter 5, corresponding second diaphragm of face serial number 13, the corresponding third positive meniscus lens of face serial number 13 and 14 11 (the second diaphragm and
Third positive meniscus lens 11 is overlapped), corresponding second diverging meniscus lens 12 of face serial number 18 and 19, the corresponding third of face serial number 20 and 21 is born
Meniscus lens 13, corresponding 4th positive meniscus lens 14 of face serial number 22 and 23, face serial number 15,16,17 is virtual face, is shown not in figure
Show.
Table 5:
As shown in Table 5, it is interrupted in progress optical design using coordinate, it is related to 11 in coordinate discontinuity surface, that is, face serial number 7,10
Parameter is shown in Table 6.
Table 6:
| Face serial number | Y is eccentric | Tilt X |
| 7 | 0 | 45 |
| 10 | 0 | -45 |
| 11 | -0.245 | 0 |
Wherein Y bias indicates to need to be arranged Y bias (unit mm) because optical axis and reference axis be not coaxial, keeps it same
Axis.
Table 7 is the even aspheric surface coefficient table of face serial number 23 in table 5.
Table 7:
Figure 10 to Figure 12 is that the MTF of the long wave infrared region of near-infrared of the present invention and LONG WAVE INFRARED two waveband microcobjective is bent
Line, wherein curve a indicates T diffraction limit, and block curve b indicates S diffraction limit, curve LS0When a height of 0mm of expression thing
The visual field in sagitta of arc direction, curve LT0Indicate the visual field of meridian direction when expression thing a height of 0mm, curve LS0.8Expression thing is a height of
The visual field in sagitta of arc direction when 0.8mm, curve LT0.8Indicate the visual field of meridian direction when expression thing a height of 0.8mm, curve LS1.5Table
The visual field in sagitta of arc direction when showing a height of 1.5mm of object, curve LT1.5Indicate the visual field of meridian direction when expression thing a height of 1.5mm.
Figure 13 is the curvature of field figure of long wave infrared region, and Figure 14 is the distortion figure of long wave infrared region.
In optical lens design field, MTF is an important indicator for evaluating optical system imaging quality height, it is counted
Diffraction modulation transfer function value at all field positions of letting it pass, contrast when reflecting optical system to object different frequency
Transmission capacity.The near-infrared of Fig. 4,5,6 and Figure 10,11, the 12 respectively near-infrared and LONG WAVE INFRARED two waveband microcobjective
With LONG WAVE INFRARED MTF curve, mtf value is bigger, curve is more steady, then image quality is better.It can be with from Fig. 4,5,6,10,11 and 12
It is relatively more steady, it is seen that the camera lens has preferable image quality, reaches respectively it can be seen that MTF curve is substantially close to diffraction limit
The target of design.
In optical design arts, distortion refers to mistake of the optical system to object imaging relative to object itself
True degree, the curvature of field are also known as filed curvature.When lens are there are when the curvature of field, the intersection point of entire light beam is not overlapped with ideal image point, although
Clearly picture point can be obtained in each specified point, but entirely as plane is then a curved surface.Fig. 7 and Figure 13 is respectively near-infrared
With the near-infrared of LONG WAVE INFRARED two waveband microcobjective and the curvature of field figure of LONG WAVE INFRARED, Fig. 8 and Figure 14 are respectively near-infrared and length
The near-infrared and LONG WAVE INFRARED distortion figure of wave infrared double-waveband microcobjective.Near-infrared part curvature of field figure as shown in Figure 7, camera lens
Meridianal curvature of field and Sagittal field curvature are respectively less than 0.2mm, the LONG WAVE INFRARED part curvature of field as shown in Figure 13, the meridianal curvature of field and the sagitta of arc of camera lens
The curvature of field is respectively less than 0.2mm, and curvature of field numerical value is not too greatly, to reach the target of design.When distortion is less than 3%, imaging is not seen
Deformation, as shown in Figure 8 less than 2%, LONG WAVE INFRARED fractional distortion is less than this secondary design near-infrared distortion figure as shown in Figure 14
2%, image quality deformation is smaller, reaches the target of design, and distortion and the curvature of field all reach the target of design, it is seen that the camera lens
There is preferable image quality.
Near-infrared and LONG WAVE INFRARED two waveband microcobjective provided by the invention, parallel flat 2 therein are equivalent to micro-
Coverslip in system can make observation biological tissue relatively fixed, while can be to avoid biological tissue and optical system eyeglass
Direct contact stain eyeglass etc..Near-infrared and LONG WAVE INFRARED two waveband microcobjective pass through the first positive meniscus lens 3 and first
The combination of diverging meniscus lens 4 carrys out correcting chromatic aberration, to prevent common optical pathways system residual color difference to short wavelength-NIR system and length below
Wave infrared system image quality has an impact.The first pair of glue with even aspheric surface surface is used in short wavelength-NIR system simultaneously
Lens 8 are closed, using the 4th positive meniscus lens 14 with even aspheric surface surface in LONG WAVE INFRARED system, can be very good school
Positive aberration improves optical characteristics, improves image quality, enhances system resolution.Near-infrared and LONG WAVE INFRARED two waveband of the invention
Microcobjective, it is that near-infrared and LONG WAVE INFRARED two is different by the way of common optical pathways system (Shared aperture adds beam splitter 5)
Band fusion into a system, it can be achieved that the information of two wave bands of real-time detection short wavelength-NIR and LONG WAVE INFRARED, in biology
It is closely red by shortwave with the application of the invention, deep layer fluorescence imaging is presented and differentiates the ability of biological tissue's growth course in terms of medicine
External system observes the fluorescence inside cultivated biological tissue, (long from radiation when being grown by LONG WAVE INFRARED system and biological tissue
Wave infrared emanation) characteristic observation biological tissue's developmental process variation.The present invention can detecte fluorescence and generate it is infrared heat at
Picture, image quality is high, is capable of the requirement of details observation, meets requirement of the biomedical aspect field to microcobjective.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. near-infrared and LONG WAVE INFRARED two waveband microcobjective, which is characterized in that including common optical pathways system, short wavelength-NIR system
System and LONG WAVE INFRARED system, the common optical pathways system includes the medium water (1) set gradually, parallel flat (2), first just curved
Moon lens (3), the first diverging meniscus lens (4) and beam splitter (5), the short wavelength-NIR system include the first light set gradually
Late (6), the second positive meniscus lens (7), the first cemented doublet (8) and the second cemented doublet (9), first pair of gluing are saturating
The surface closest to the second positive meniscus lens (7) of mirror (8) is even aspheric surface, and the LONG WAVE INFRARED system includes setting gradually
The second diaphragm, third positive meniscus lens (11), the second diverging meniscus lens (12), third diverging meniscus lens (13) and the 4th just curved
Moon lens (14), the surface for closing on the second image planes (15) of the 4th positive meniscus lens (14) are even aspheric surface；
Incident beam is successively through medium water (1), parallel flat (2), the first positive meniscus lens (3) and the first diverging meniscus lens (4)
After be incident on beam splitter (5)；It is close that short wavelength-NIR wave band light beam in incident beam is incident on shortwave after beam splitter (5) reflection
Infrared system obtains the first image planes (10) in front of short wavelength-NIR system；Long wave infrared region light beam warp in incident beam
It is incident on LONG WAVE INFRARED system after beam splitter (5) transmission, the second image planes (15) are obtained in front of LONG WAVE INFRARED system.
2. near-infrared as described in claim 1 and LONG WAVE INFRARED two waveband microcobjective, which is characterized in that the medium water
(1) refractive index is 1.34, Abbe number 57.9.
3. near-infrared as described in claim 1 and LONG WAVE INFRARED two waveband microcobjective, which is characterized in that described first is just curved
Month lens (3) concave surface is towards object space, and the first diverging meniscus lens (4) concave surface is towards object space, the second positive meniscus lens (7) concave surface direction
First image planes (10), third positive meniscus lens (11) concave surface direction the second image planes (15), the second diverging meniscus lens (12) convex surface court
To the second image planes (15), third diverging meniscus lens (13) concave surface direction the second image planes (15), the 4th positive meniscus lens (14) concave surface
Towards the second image planes (15).
4. near-infrared as described in claim 1 and LONG WAVE INFRARED two waveband microcobjective, which is characterized in that the first pair of glue
The material for closing lens (8) and the second cemented doublet (9) is ZnSe and ZnS；The material of beam splitter (5) is ZnSe；First just
Meniscus lens (3) material is ZnSe；First diverging meniscus lens (4) material is ZnS；Second positive meniscus lens (7) material is ZnS；
Third positive meniscus lens (11) material is Ge；Second diverging meniscus lens (12) material is ZnS；Third diverging meniscus lens (13) material
For Ge；4th positive meniscus lens (14) material is ZnS.
5. near-infrared as described in claim 1 and LONG WAVE INFRARED two waveband microcobjective, which is characterized in that the microcobjective
The distortion of produced figure is less than 2%.
6. near-infrared as described in claim 1 and LONG WAVE INFRARED two waveband microcobjective, which is characterized in that first diaphragm
(6), the second positive meniscus lens (7), the first cemented doublet (8) and the second cemented doublet (9) coaxial arrangement.
7. near-infrared as described in claim 1 and LONG WAVE INFRARED two waveband microcobjective, which is characterized in that second light
Door screen, third positive meniscus lens (11), the second diverging meniscus lens (12), third diverging meniscus lens (13) and the 4th positive meniscus lens
(14) it is coaxially disposed.
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| CN201910623980.3A CN110398832A (en) | 2019-07-11 | 2019-07-11 | Near-infrared and LONG WAVE INFRARED two waveband microcobjective |
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