CN208969325U - Apochromatic micro objective - Google Patents
Apochromatic micro objective Download PDFInfo
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- CN208969325U CN208969325U CN201821644576.1U CN201821644576U CN208969325U CN 208969325 U CN208969325 U CN 208969325U CN 201821644576 U CN201821644576 U CN 201821644576U CN 208969325 U CN208969325 U CN 208969325U
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- lens
- micro objective
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/02—Objectives
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The utility model relates to a kind of apochromatic micro objectives (1) comprising have most nine lens (L in total1To L9) three subsystems (G1, G2, G3).
Description
Technical field
The utility model relates to a kind of apochromatic micro objectives.The utility model further relates to a kind of with this object
The microscope of mirror.
Background technique
Apochromatic micro objective be it is known, utilize at least 0.8 numerical aperture imaging at least 1.25mm
Object field.Apochromatic micro objective usually constructs complicated and very long.
Utility model content
The technical problem to be solved by the utility model is to improve this object lens, it is provided in particular in compact construction
Apochromatic micro objective of mode.
The technical problem is solved by object lens with the following characteristics, and the object lens include
1.1 three subsystems, wherein from sample plane
1.2 first subsystems
1.1.1 there is length l1, be applicable in for the length: 0.9F≤l1≤F, and
It 1.1.2 include the meniscus shaped lens with refracting power towards object plane arching, the absolute value of refracting power is small
In 0.025, wherein the meniscus shaped lens of the first subsystem is by refraction in the case where wavelength e=546nm at least 1.85
Rate ne, the i.e. glass of ne >=1.85 are constituted,
1.3 second subsystems
1.3.1 by least three there is the subgroup of most six lens in total to constitute, wherein two in three subgroups
A by single convergent lens, single convex lens is constituted in other words, and the list convergent lens is made of fluor crown,
1.3.2 there is focal length f2, be applicable in for the focal length: 1.83F < f2 < 2.36F, and
1.3.3 there is length l2, be applicable in for the length: 2.75F < l2 < 3.2F, and
1.4 third subsystems
1.4.1 have be configured to double adhesive (Zweifachkittglied), it is saturating towards the falcate of image arching
Mirror, with convergent lens and divergent lens, wherein convergent lens is made of fluor crown, and wherein, divergent lens is by having
There is refractive index ne< 1.57 short flint glass is constituted,
1.4.2 have refracting power, absolute value less than 0.014, and
1.4.3 there is length l3, be applicable in for the length: 1.05F < l3 < 1.1F.
The core of the utility model is that object lens are made of most nine lens, and the lens are arranged as also referred to as subsystem
Three groups of system.
One aspect according to the present utility model, the meniscus shaped lens of the first subsystem in the wavelength of 546nm by having
The glass of at least 1.85 refractive index is constituted.The glass can especially lanthanum glass.
Other aspect according to the present utility model, the second subsystem include three subgroups.Two of them subgroup by
Simple lens is especially made of single convergent lens, and the simple lens is especially made of fluor crown.
Other aspect according to the present utility model, the second subsystem include six lens of highest.
Two lens of other aspect according to the present utility model, third subsystem are made of different glass.Third
The convergent lens of subsystem is especially made of fluor crown.The divergent lens of third subsystem is especially by short flint glass
It constitutes.It is especially made of the glass with refractive index ne < 1.57.
Other aspect according to the present utility model, object lens include by at least four glass structures with different refractive index
At lens.It is possible thereby to realize apochromatism in the spectral region of 380nm to 900nm.Micro objective therefore especially
Apochromatic object lens of finger beam band.This is in the color bands with digital sensor, especially with the color bandwidth greater than human eye
Serve when using to wide sensor combinations particularly advantageous.
Other aspect according to the present utility model, object lens are dry objectives, the object lens used that is, non-steepedly.This can be real
In the application for now object lens being used to not allow to impregnate.
Other aspect according to the present utility model, object lens have at least 0.8, especially at least 0.85 numerical aperture.
The numerical aperture of object lens is also possible to 0.9.
It is possible thereby to realize the high-resolution of object lens.
Other aspect according to the present utility model, the general construction length of object lens are maximum 50mm.It for example can be
48mm。
In other words, object lens have very compact make.
Other aspect according to the present utility model, object lens include maximum nine lens.
This facilitates the compact make of object lens.
Other aspect according to the present utility model, it is at least object field of 1.25mm that object lens, which have diameter, thus obtain compared with
High optical conductivity.
Object lens are particularly suitable for the microscope applications with digital imagery.Here, can be used with small pixel and big picture
The high performance sensor of field.This can be realized is imaged big field while high-resolution.
Another technical problem to be solved in the utility model is to improve a kind of microscope.The technical problem is by having
It is solved according to the microscope of the object lens of description before.
Microscope especially optical microscopy.Microscope especially can have the radiation source in broadband.Microscopical light source
Spectral region especially can be from 380nm at least 900nm.
Other aspect according to the present utility model, microscope include digital picture detection device, such as CCD camera.
Detailed description of the invention
Other details and advantage of the utility model are by with reference to the accompanying drawings obtaining the description of embodiment.In the accompanying drawings:
Fig. 1 shows schematical vertical section that cutting is obtained according to the optical component of the micro objective of the first variant schemes
Face figure；With
Fig. 2 shows schematical vertical sections that cutting is obtained according to the optical component of the micro objective of the second variant schemes
Face figure.
Specific embodiment
Fig. 1 shows the longitudinal section that the arragement construction for the optics component part that cutting is used for microscopical object lens 1 obtains.
Furthermore it is exemplarily illustrated the trend of central main beam HS and two edges beam RS1, RS2 in the accompanying drawings.
Due to illustrative clarity, the mechanical composition part of object lens 1 is not shown in the accompanying drawings.
In addition, cover glass coverslip DG in other words is shown in the attached drawings.The coverslip is arranged as, so that its front side
In the object plane in other words region of sample plane OE.
The especially apochromatic micro objective of object lens 1.Its especially dry objective, the object lens used that is, non-steepedly.
Object lens 1 have high optical conductivity.
Object lens 1 are characterized in that compact make.It especially has the structure length I less than 50mmges。
Object lens 1 include three subsystems G1, G2 and G3.
The characteristic of the optics component part of subsystem G1, G2 and G3 described below from object plane OE.
First subsystem G1 includes the first lens L1, it is configured to meniscus shaped lens.The meniscus shaped lens encircles towards object
It is bent.Therefore, lens L1It is concave-convex lens from object.
First subsystem G1 has length L1, it is applicable in: 0.9F≤L1≤ F, wherein the focal length of F expression object lens 1.
Lens L1It is made of glass, there is at least 1.85 refractive index ne, i.e. ne in the case where wavelength e=546nm
≥1.85。
Lens L1With refracting power ρ1, absolute value less than 0.025, | ρ | < 0.025.
Lens L1With the thickness l along main beam HS measurement 7.8mm1.Lens L1Thickness especially highest 10mm, especially
It is highest 9mm, especially highest 8mm, especially highest 7.8mm.
Lens L1The especially lens with maximum gauge of object lens 1.
The second subsystem G2 is disposed with after the first subsystem G1.Between first subsystem G1 and the second subsystem G2
Distance is 0.1mm.
Second subsystem G2 includes at least three subgroup UG1, UG2 and UG3.Second subsystem is especially by three
Subgroup UG1, UG2 and UG3 are constituted.
Two subgroups UG1 and UG3 pass through simple lens L2And L6It is formed.
Second subsystem G2 has focal length f2, it is applicable in: 1.83F < F2<2.36F。
Second subsystem G2 has length l2, it is applicable in: 2.75F < l2<3.2F。
Second subsystem G2 includes five lens L2To L6.It generally includes not more than six lens.
Subgroup UG1 is by simple lens L2It constitutes.Lens L2Especially convergent lens.
Lens L2It is configured to meniscus shaped lens.
Lens L2It is made of fluor crown.It is especially by having the glass of refractive index ne in the range of 1.4 to 1.6
It constitutes.
Second subgroup UG2 is configured to three heavy mails (Dreifachglied).It includes lens L3、L4And L5。
Lens L3It is configured to concave-convex lens.
Lens L5It is configured to biconvex lens.
It is arranged in lens L3With L5Between lens L4It is configured to biconcave lens.
Lens L3And L5It is made of identical glass types.
Lens L4It is made, has than lens L of following glass types3And L5Bigger refractive index ne.
Subgroup UG3 includes simple lens L6。
Lens L6It is configured to convergent lens.
Lens L6It is configured to biconvex lens.
Lens L6It is made of fluor crown.
Lens L6It is the lens with maximum gauge of object lens 1.
Lens L6By with lens L3And L5Identical glass types are made.
Subsystem G3 includes having lens L7And L8Double adhesive.Double adhesive forms meniscus shaped lens.Falcate
Lens are especially towards image arching.
Lens L7It constructs lenticularly.It refers in particular to convergent lens.Lens L7It is preferred that being made of fluor crown.It is especially
Can by with lens L2Identical glass is made.
Lens L8Construct to double concave.It is configured to divergent lens.
Lens L8It is made of short flint glass.It is especially made of the glass with refractive index ne < 1.57.
Lens L8It can be made of, have than lens L following glass7The bigger refractive index ne of glass.
With lens L7And L8Adhesive refracting power ρ3Absolute value less than 0.014, | ρ3|<0.014。
The structure length l of third subsystem3In the range of 1.05F to 1.1F.
Lens L7The surface Fl towards object plane OE13With lens L6With surface Fl13Opposed surface Fl12Have
4.42mm distance.The general construction length I of object lensgesEspecially in the range of 4.7F to 5.3F.
According to the design data of the object lens of Fig. 1 again itemizing in table 1.
Table 1
Tube lens described in table 2 are incorporated in, object lens 1 have 20 times of amplification factor.Object lens 1 have 0.8 number
It is worth aperture.Object lens 1 have the object field size of 1.25mm.Object lens 1 have the focal length of 8.225mm.Object lens 1 and the first tube lens have
There is the distance of 127mm.
Summarize in table 2 for designing selection of the setting for the details of the tube lens unit of object lens 1.
| Surface number | Radius of curvature r [mm] | Thickness d or distance [mm] | Refractive index ne | Abbe number υe |
| 1 | 189.417 | 10.900 | 1.58212 | 53.59 |
| 2 | -189.417 | 60.000 | ||
| 3 | It is infinitely great | 80.000 | 1.51872 | 63.96 |
| 4 | It is infinitely great | 48.200 | ||
| 5 | Intermediate image plane |
Table 2
Tube lens unit has the focal length of 164.5mm.
The alternative embodiment of object lens 1 is shown in FIG. 2.The embodiment of object lens 1 according to fig. 2 is corresponding in many aspects
In the design according to Fig. 1, therefore it can be referred to.Difference is described below.Object lens 1 according to fig. 2 include nine lens L1
To L9。
The design in particular, in that the second subsystem G2 is distinguished in the design of lens 1 according to fig. 2.In the alternative,
Subsystem G2 includes the single convergent lens L for being configured to meniscus shaped lens2, form the first subgroup UG1.
The subsystem further includes double-convex type convergent lens L3, form the second subgroup UG2.
The subsystem further includes third subgroup UG3.Third subgroup UG3 is formed by two double adhesives.Third
Grouping includes lens L4To L7。
Lens L5And L6It is made of identical glass.Lens L4And L7Equally it is made of identical glass.
The detailed design data of alternative according to fig. 2 is enumerated in table 3.
Table 3
The alternative shown in figure 2 of object lens 1 has 0.9 numerical aperture.About putting for object lens 1 according to fig. 2
Big multiple, object field size and focal length reference pair are according to the explanation of the alternative of Fig. 1.
Tube lens device can also correspondingly be constructed with description before.
Broadband, apochromatic object lens 1 refer to high-resolution micro objective.It can be in 380nm at least
It is used in the spectral region of 900nm.Its application for being therefore particularly suitable for the broadband in terms of color.It is particularly suitable for having number
Word image detection device (such as form is CCD camera), the microscope especially with high resolution sensor.
Claims (14)
1. one kind has apochromatic micro objective (1) of focal length (F), including
1.1 three subsystems (G1, G2, G3), wherein from sample plane (the OE)
1.2 first subsystems (G1)
1.1.1 there is length (l1), is applicable in for the length (l1): 0.9F≤l1≤F, and
It 1.1.2 include that there is refracting power (ρ towards object plane (OE) arching1) meniscus shaped lens (L1), refracting power it is exhausted
To value less than 0.025, wherein the meniscus shaped lens (L of the first subsystem (G1)1) by having in the case where wavelength e=546nm
At least 1.85 refractive index (ne), the i.e. glass of ne >=1.85 are constituted,
1.3 second subsystems (G2)
1.3.1 by least three there are the subgroups of most six lens in total to constitute, wherein two in three subgroups by
Single convergent lens (L2、L6；L2、L3) constitute, the list convergent lens is made of fluor crown,
1.3.2 there is focal length (f2), is applicable in for the focal length (f2): 1.83F < f2 < 2.36F, and
1.3.3 there is length (l2), is applicable in for the length (l2): 2.75F < l2 < 3.2F, and
1.4 third subsystem (G3)
1.4.1 have and be configured to double adhesive, meniscus shaped lens towards image arching, with convergent lens (L7；L8) and
Divergent lens (L8；L9), wherein convergent lens (L7；L8) be made of fluor crown, and wherein, divergent lens (L8；L9) by having
There is refractive index ne< 1.57 short flint glass is constituted,
1.4.2 there is refracting power (ρ3), absolute value less than 0.014, and
1.4.3 there is length (l3), is applicable in for the length (l3): 1.05F < l3 < 1.1F.
2. apochromatic micro objective (1) according to claim 1, which is characterized in that the second subsystem (G2) packet
Include three lens (L3、L5、L6；L2、L5、L6), the lens are applicable in n by havingeThe glass of < 1.44 refractive index (ne) is constituted.
3. apochromatic micro objective (1) according to claim 1, which is characterized in that third subsystem (G3)
First lens (L7、L8) by the first lens (L with the second subsystem (G2)2) or the second lens (L3) identical glass constitutes.
4. apochromatic micro objective (1) according to claim 1, which is characterized in that the micro objective packet
Include the lens (L being made of at least four glass with different refractive index (ne)1、L2、L3、L4、L5、L6、L7、L8；L1、L2、
L3、L4、L5、L6、L7、L8、L9)。
5. apochromatic micro objective (1) according to claim 1, which is characterized in that the micro objective is
Dry objective.
6. apochromatic micro objective (1) according to claim 1, which is characterized in that the micro objective tool
There is at least 0.8 numerical aperture (NA).
7. apochromatic micro objective (1) according to claim 1, which is characterized in that the micro objective tool
There is the general construction length (l of highest 50mmges)。
8. apochromatic micro objective (1) according to claim 1, which is characterized in that the micro objective packet
Include most nine lens (Li)。
9. apochromatic micro objective (1) according to claim 1, it is characterised in that straight at least 1.25mm
The object field of diameter.
10. apochromatic micro objective (1) according to claim 1, it is characterised in that following design data:
11. apochromatic micro objective (1) according to any one of claim 1 to 9, it is characterised in that following
Design data:
12. a kind of microscope has apochromatic micro objective (1) according to any one of the preceding claims.
13. microscope according to claim 12, the microscope has digital picture detection device.
14. microscope according to claim 12 or 13, the microscope has the lens barrel with following design data saturating
Mirror unit:
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017218169.9A DE102017218169B3 (en) | 2017-10-11 | 2017-10-11 | Apochromatic microscope objective and microscope |
| DE102017218169.9 | 2017-10-11 |
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| Publication Number | Publication Date |
|---|---|
| CN208969325U true CN208969325U (en) | 2019-06-11 |
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ID=65526812
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821644576.1U Active CN208969325U (en) | 2017-10-11 | 2018-10-09 | Apochromatic micro objective |
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| Country | Link |
|---|---|
| CN (1) | CN208969325U (en) |
| DE (1) | DE102017218169B3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110764226A (en) * | 2019-10-29 | 2020-02-07 | 华中科技大学 | Large-view-field micro microscope objective |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020216081A1 (en) | 2020-12-16 | 2022-06-23 | Carl Zeiss CMP GmbH | Apochromatic microscope objective and microscope |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10317746B4 (en) | 2003-04-17 | 2010-11-25 | Carl Zeiss Jena Gmbh | Planapochromatic microscope objective |
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2017
- 2017-10-11 DE DE102017218169.9A patent/DE102017218169B3/en active Active
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- 2018-10-09 CN CN201821644576.1U patent/CN208969325U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110764226A (en) * | 2019-10-29 | 2020-02-07 | 华中科技大学 | Large-view-field micro microscope objective |
| CN110764226B (en) * | 2019-10-29 | 2020-12-18 | 华中科技大学 | Large-view-field micro microscope objective |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017218169B3 (en) | 2019-03-21 |
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