CN105116520B - A kind of infrared relaying image transfer lens of application chalcogenide glass - Google Patents
A kind of infrared relaying image transfer lens of application chalcogenide glass Download PDFInfo
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- CN105116520B CN105116520B CN201510622276.8A CN201510622276A CN105116520B CN 105116520 B CN105116520 B CN 105116520B CN 201510622276 A CN201510622276 A CN 201510622276A CN 105116520 B CN105116520 B CN 105116520B
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- eyeglass
- lens
- chalcogenide glass
- image transfer
- cemented lens
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- 239000005387 chalcogenide glass Substances 0.000 title claims abstract description 30
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 239000000571 coke Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 28
- 229910052732 germanium Inorganic materials 0.000 claims description 11
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 239000005864 Sulphur Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000003331 infrared imaging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012634 optical imaging Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- PFNQVRZLDWYSCW-UHFFFAOYSA-N (fluoren-9-ylideneamino) n-naphthalen-1-ylcarbamate Chemical compound C12=CC=CC=C2C2=CC=CC=C2C1=NOC(=O)NC1=CC=CC2=CC=CC=C12 PFNQVRZLDWYSCW-UHFFFAOYSA-N 0.000 description 1
- 241000700608 Sagitta Species 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000007516 diamond turning Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/0095—Relay lenses or rod lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Lenses (AREA)
- Glass Compositions (AREA)
Abstract
A kind of infrared relaying image transfer lens of application chalcogenide glass, including along optical axis spaced the first cemented lens and the second cemented lens from the object side to the image side, it is characterised in that：First cemented lens is bonded by the first eyeglass and the second eyeglass, second cemented lens is bonded by the 3rd eyeglass and the 4th eyeglass, first eyeglass is the falcate eyeglass of positive light coke, second eyeglass is the falcate eyeglass of negative power, 3rd eyeglass is the falcate eyeglass of negative power, and the 4th eyeglass is the falcate eyeglass of positive light coke.Present invention application chalcogenide glass LONG WAVE INFRARED relaying image transfer lens, with preferable optical property, are realized 1 in 8~12 μ m wavelength ranges：1 relaying image rotation.
Description
Technical field
The present invention relates to a kind of camera lens, the LONG WAVE INFRARED relaying image transfer lens of more particularly to a kind of application chalcogenide glass.
Background technology
The use of the purpose of relaying relay system is that the picture of a position is transformed on another position, relays image transfer lens
For extended parallel port system or flipped image, it is adaptable in various imaging applications, such as endoscope, rifle are aimed at, periscope system
System, and in microscope and military infrared imaging system etc..Relaying image transfer lens are placed on mesh using array or imaging len
Behind mirror, it is intended to extend the length of imaging system, or installed in the case where the object to be checked can not be approached.
The material of conventional infrared lens includes germanium, zinc sulphide, zinc selenide etc..On the one hand these materials prepare cost pole
Height, is unfavorable for the large-scale promotion of commercial market, on the other hand can only be added using costly and time-consuming Single point diamond turning o technology
Sphere or aspheric lens required for the imaging of work high-quality.In addition, conventional infra-red material species is few, refractive index, refractive index
Temperature coefficient, Abbe constant, thermal coefficient of expansion etc. concern optical system achromatism, the optical parametric selection of heat differential also more has
Limit.Therefore, many limitations also are brought for the lens design of infrared imaging system.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of LONG WAVE INFRARED relaying image transfer lens of application chalcogenide glass.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：A kind of infrared relaying of application chalcogenide glass turns
As camera lens, including along optical axis spaced the first cemented lens and the second cemented lens from the object side to the image side, it is characterised in that：
First cemented lens is bonded by the first eyeglass and the second eyeglass, and second cemented lens is by the 3rd eyeglass and the 4th
Eyeglass is bonded, and first eyeglass is the falcate eyeglass of positive light coke, and the second eyeglass is the falcate mirror of negative power
Piece, the 3rd eyeglass is the falcate eyeglass of negative power, and the 4th eyeglass is the falcate eyeglass of positive light coke.
First eyeglass and the 4th eyeglass are symmetrical, and second eyeglass and the 3rd eyeglass are symmetrical.
Preferably, above-mentioned first, second, third and fourth eyeglass meets following condition：
0.8 ＜ f11/f1The ＜ of ＜ 0.9,4 | f12/f1| ＜ 5, | f11| ＜ | f12|, | f11|=| f22|, | f12|=| f21|, 4 ＜ |
f21/f2| the ＜ f of ＜ 5,0.822/f1＜ 0.9, | f21| ＞ | f22|, wherein f11、f12、f21And f22Respectively first, second, third He
The focal length of 4th eyeglass, f1And f2The respectively focal length of the first cemented lens and the second cemented lens.
Preferably, diaphragm is provided between first cemented lens and the second cemented lens, the diaphragm is the first bonding
Symmetrical centre between lens and the second cemented lens.
Preferably, the first cemented lens and the second cemented lens respectively by germanium material and chalcogenide glass material bonding and
Into.
Preferably, the object distance and image distance of the camera lens are 170mm.
Preferably, the thing of the camera lens is high and image height is 80mm.
As the alternative embodiment of the present invention, first eyeglass and the 4th eyeglass are germanium material, second eyeglass and the
Three eyeglasses are chalcogenide glass material；Or second eyeglass and the 3rd eyeglass are germanium material, first eyeglass and the 4th eyeglass
For chalcogenide glass material.
Compared with prior art, the advantage of the invention is that using emerging infra-red material --- chalcogenide glass is replaced in recent years
In generation, conventional infra-red material prepared eyeglass, the relatively inexpensive convenience of preparation technology, so as to significantly reduce the high infrared mirror of image quality of making
The time of head and financial cost, by rational constituent optimization, can targetedly design preparation has special refractive index, folding
The chalcogenide glass of the optical parametrics such as rate temperature coefficient is penetrated, the design freedom of infrared optical imaging system has effectively been expanded.This
Invention application chalcogenide glass LONG WAVE INFRARED relaying image transfer lens, with preferable optical property, realize 8~12 μ m wavelength ranges
Interior 1：1 relaying image rotation.
Brief description of the drawings
Fig. 1 is the structural representation of the infrared relaying image transfer lens of the embodiment of the present invention.
Fig. 2 is MTF figure of the infrared relaying image transfer lens of the embodiment of the present invention in central vision.
Fig. 3 is MTF figure of the infrared relaying image transfer lens of the embodiment of the present invention in image height 28mm.
Fig. 4 is MTF figure of the infrared relaying image transfer lens of the embodiment of the present invention in image height 40mm.
Fig. 5 is the chromatic curve figure of the infrared relaying image transfer lens of the embodiment of the present invention.
Fig. 6 a, 6b, 6c are the infrared relaying image transfer lens of the embodiment of the present invention when thing height is respectively 0,56mm, 80mm
Point range figure.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
The LONG WAVE INFRARED relaying image transfer lens of the embodiment of the present invention, as shown in figure 1, first including spaced setting is viscous
Lens 1, the cemented lens 2 of diaphragm 3 and second are closed, the first cemented lens 1 is by the first eyeglass E1 and the along optical axis from the object side to the image side
Two eyeglass E2 are bonded, and the second cemented lens 2 is bonded by the 3rd eyeglass E3 and the 4th eyeglass E4, and the first eyeglass E1 is just
The falcate eyeglass of focal power, the second eyeglass E2 is the falcate eyeglass of negative power, and the 3rd eyeglass E3 is curved for negative power
Month shape eyeglass, the 4th eyeglass E4 is the falcate eyeglass of positive light coke.First eyeglass E1 and the 4th eyeglass E4 is symmetrical structure, the
Two eyeglass E2 and the 3rd eyeglass E3 are symmetrical structure, and diaphragm 3 is symmetry system having symmetry center, i.e. the first cemented lens 1 and the second bonding
The symmetrical centre of lens 2.
And the optical parametric of above-mentioned four eyeglasses meets relationship below：
0.8 ＜ f11/f1The ＜ of ＜ 0.9,4 | f12/f1| ＜ 5, | f11| ＜ | f12|, | f11|=| f22|, | f12|=| f21|, 4 ＜ |
f21/f2| the ＜ f of ＜ 5,0.822/f1＜ 0.9, | f21| ＞ | f22|, wherein f11、f12、f21And f22Respectively first, second, third He
The focal length of 4th eyeglass, f1And f2The respectively focal length of the first cemented lens 1 and the second cemented lens 2.
Wherein the first eyeglass E1 and the 4th eyeglass E4 is germanium (Ge) material, and the second eyeglass E2 and the 3rd eyeglass E3 are sulphur system glass
Glass material GASIR2, wherein GASIR2 are the chalcogenide glass that Umicore companies of France sell, and its component is Ge20Sb15Se65, when
Other chalcogenide glass materials can also so be used.Material can also be replaced mutually, and such as first, fourth eyeglass is chalcogenide glass material,
Second and third eyeglass is that Ge materials also may be used.
The camera lens of the present invention realizes 1 using the lens combination of different profiles and using the distribution of reasonable focal power：1 long wave is red
The function of outer relaying image rotation, and the camera lens can be to object 1 of the image height for 80mm：1 etc. compares image rotation.Optical focal length is 120mm, is adjusted
Modulation trnasfer function is close to diffraction limit.The focal power relation of each eyeglass is rationally limited to certain limit and simple system, chalcogenide glass
Reduce eyeglass using mould pressing technology and prepare difficulty, and various optical aberrations can be caused to reach balance, realize close to diffraction
The image quality of the limit, makes optical property more excellent.By selection possess specific Abbe constant, specific dn/dt relations sulphur
It is glass and germanium material combination, realizes 1 in 8 μm~12 μm of infrared long wave limit：1 image rotation.
Preferably, the focal power of each eyeglass is as follows：Φ1=Φ4=7.29 × 10-3, Φ2=Φ3=-1.31 × 10-3.Its
Middle Φ1、Φ2、Φ3And Φ4Respectively the first eyeglass E1, the second eyeglass E2, the 3rd eyeglass E3 and the 4th eyeglass E4 focal power.
Along optical axis from object space to image space, by the surface number consecutively of all parts, the first eyeglass E1 two minute surfaces are distinguished
For S1, S2, the second eyeglass E2 two minute surfaces are S3, S4, and diaphragm STOP, the 3rd eyeglass E3 two minute surfaces are S5, S6, the 4th
Eyeglass E4 two minute surfaces are S7, S8.What table 1 was listed is the eyeglass relevant parameter of specific system, the surface class comprising eyeglass face
Type, radius of curvature, thickness, material, the eyeglass radius of also each eyeglass, OBJ are the first face of system, i.e. incidence surface.
Table 1：
| Face sequence number | Surface type | Radius of curvature (mm) | Thickness (mm) | Material | Eyeglass radius (mm) |
| OBJ | Index plane | Infinity | 170.00 | 40.00 | |
| S1 | Index plane | 108.25 | 9.00 | Germanium | 22.00 |
| S2 | Index plane | 137.90 | 0.00 | 21.00 | |
| S3 | Index plane | 137.90 | 9.00 | GASIR2 | 21.00 |
| S4 | Index plane | 118.90 | 35.00 | 19.00 | |
| Stop | Index plane | Infinity | 35.00 | 10.00 | |
| S5 | Index plane | -118.9 | 9.00 | GASIR2 | 19.00 |
| S6 | Index plane | -137.90 | 0.00 | 21.00 | |
| S7 | Index plane | -137.90 | 9.00 | Germanium | 21.00 |
| S8 | Index plane | -108.25 | 170.00 | 22.00 | |
| IMA | Index plane | Infinity | --- | 40.00 |
The thickness in wherein each face, represents distance of the face to the optical axis between latter one face.
The LONG WAVE INFRARED of the application chalcogenide glass designed according to table 1 relays image transfer lens, and its optical system focal length is
120mm, system uses Polaroid mode, and the axial space length of the face of system first to the first bonding eyeglass is 170.00mm,
Second bonding eyeglass is 170.00mm to the axial space distance of image planes, and the distance between two cemented lenses are 70.00mm, middle
Diaphragm is set at 35mm, and thing is high and image height is 80mm, and applicable wavelengths are 8~12 μm.
Design parameter in above table is only illustration type, each lens components radius of curvature, face interval and refractive index
Value etc., be not limited to, as the value shown in said system, other values can be taken, similar technique effect can be reached.
Therefore present invention application chalcogenide glass LONG WAVE INFRARED relaying image transfer lens, with preferable optical property, realize 8
1 in~12 μ m wavelength ranges：1 relaying image rotation.
Fig. 2-6 illustrates each optical property of the camera lens, and the infrared relaying image transfer lens that Fig. 2-4 is respectively the present invention exist
The FFT MTF of jljl relative superiority or inferiority do not scheme, and transverse axis represents different spatial frequencys, and vertical pivot is represented in modulation degree, the figure of all visual fields
Meridian curve (T) and sagitta of arc curve (S) are all closely and close to diffraction limit.Fig. 5 is the chromatic curve of the camera lens, transverse axis
For focus offset, vertical pivot is wavelength, is illustrated in the range of 8~12 μm, there is no that focal length is inclined at 8 μm and 12 μm
Move, preferably, peak excursion is in wavelength in the case of 10 μm to achromatism effect.Fig. 6 a, 6b, 6c are the lens systems not
Point range figure when jljl is high, thing height is respectively 0,56mm and 80mm, and point range figure of the relaying image transfer lens in all angles exists
In one Aili spot, system effect is preferable.
The present invention substitutes conventional infra-red material using emerging infra-red material in recent years-chalcogenide glass and prepares eyeglass, prepares
The relatively inexpensive convenience of technique, so that the time for making high image quality infrared lens and financial cost are significantly reduced, by reasonable
Constituent optimization, can targetedly design and prepare the sulphur with the optical parametric such as special refractive index, thermal refractive index coefficient
It is glass, has effectively expanded the design freedom of infrared optical imaging system.In present invention application chalcogenide glass LONG WAVE INFRARED
After image transfer lens, with preferable optical property, realize 1 in 8~12 μ m wavelength ranges：1 relaying image rotation.
Claims (7)
1. a kind of infrared relaying image transfer lens of application chalcogenide glass, including along optical axis from the object side to the image side spaced first
Cemented lens (1) and the second cemented lens (2), it is characterised in that：First cemented lens (1) is by the first eyeglass (E1) and
Two eyeglasses (E2) are bonded, and second cemented lens (2) is bonded by the 3rd eyeglass (E3) and the 4th eyeglass (E4), institute
The falcate eyeglass that the first eyeglass (E1) is positive light coke is stated, the second eyeglass (E2) is the falcate eyeglass of negative power, the 3rd
Eyeglass (E3) is the falcate eyeglass of negative power, and the 4th eyeglass (E4) is the falcate eyeglass of positive light coke,
Above-mentioned first, second, third and fourth eyeglass meets following condition：
0.8 ＜ f11/f1The ＜ of ＜ 0.9,4 | f12/f1| ＜ 5, | f11| ＜ | f12|, | f11|=| f22|, | f12|=| f21|, 4 ＜ | f21/f2
| the ＜ f of ＜ 5,0.822/f1＜ 0.9, | f21| ＞ | f22|, wherein f11、f12、f21And f22Respectively first, second, third and fourth
The focal length of eyeglass, f1And f2The focal length of respectively the first cemented lens (1) and the second cemented lens (2).
2. the infrared relaying image transfer lens of chalcogenide glass are applied as claimed in claim 1, it is characterised in that：First eyeglass
(E1) and the 4th eyeglass (E4) is symmetrical, second eyeglass (E2) and the 3rd eyeglass (E3) are symmetrical.
3. the infrared relaying image transfer lens of chalcogenide glass are applied as claimed in claim 1, it is characterised in that：First bonding
Diaphragm (3) is provided between lens (1) and the second cemented lens (2), the diaphragm (3) is that the first cemented lens (1) glues with second
Close the symmetrical centre between lens (2).
4. the infrared relaying image transfer lens of chalcogenide glass are applied as claimed in claim 1, it is characterised in that：First cemented lens
(1) respectively it is bonded with the second cemented lens (2) by germanium material and chalcogenide glass material.
5. the infrared relaying image transfer lens of chalcogenide glass are applied as claimed in claim 1, it is characterised in that：The object distance of the camera lens
It is 170mm with image distance.
6. the infrared relaying image transfer lens of chalcogenide glass are applied as claimed in claim 1, it is characterised in that：The thing of the camera lens is high
It is 80mm with image height.
7. the infrared relaying image transfer lens of chalcogenide glass are applied as claimed in claim 4, it is characterised in that：First eyeglass
(E1) and the 4th eyeglass (E4) is germanium (Ge) material, second eyeglass (E2) and the 3rd eyeglass (E3) are chalcogenide glass material；Or
Second eyeglass (E2) described in person and the 3rd eyeglass (E3) are germanium (Ge) material, and first eyeglass (E1) and the 4th eyeglass (E4) are sulphur
It is glass material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510622276.8A CN105116520B (en) | 2015-09-25 | 2015-09-25 | A kind of infrared relaying image transfer lens of application chalcogenide glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510622276.8A CN105116520B (en) | 2015-09-25 | 2015-09-25 | A kind of infrared relaying image transfer lens of application chalcogenide glass |
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| Publication Number | Publication Date |
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| CN105116520A CN105116520A (en) | 2015-12-02 |
| CN105116520B true CN105116520B (en) | 2017-10-03 |
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| CN106802479B (en) * | 2017-03-22 | 2019-09-13 | 精微视达医疗科技（武汉）有限公司 | Laser scanning relays microscope group and the co-focusing micro-endoscope with the relaying microscope group |
| WO2022160119A1 (en) * | 2021-01-27 | 2022-08-04 | 欧菲光集团股份有限公司 | Optical system, photographing module, and electronic device |
| CN117572607B (en) * | 2024-01-16 | 2024-03-29 | 苏州高视半导体技术有限公司 | Cylindrical lens with negative distortion and broadband and microscopic optical system |
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| DE19910050C2 (en) * | 1999-03-08 | 2003-08-14 | Storz Karl Gmbh & Co Kg | Image transmission system for endoscopes and the like periscopes and method for producing an image transmission system |
| WO2013070514A2 (en) * | 2011-11-08 | 2013-05-16 | Reald Inc. | Imaging path speckle mitigation |
| JP5867270B2 (en) * | 2012-04-26 | 2016-02-24 | 株式会社ニコン | Anti-vibration infrared optical system and infrared imaging device |
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