CN105116520A - Infrared relay image rotation lens using chalcogenide glass - Google Patents
Infrared relay image rotation lens using chalcogenide glass Download PDFInfo
- Publication number
- CN105116520A CN105116520A CN201510622276.8A CN201510622276A CN105116520A CN 105116520 A CN105116520 A CN 105116520A CN 201510622276 A CN201510622276 A CN 201510622276A CN 105116520 A CN105116520 A CN 105116520A
- Authority
- CN
- China
- Prior art keywords
- eyeglass
- lens
- chalcogenide glass
- cemented lens
- image transfer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000005387 chalcogenide glass Substances 0.000 title claims abstract description 35
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 25
- 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
- 239000000571 coke Substances 0.000 claims description 6
- 230000005499 meniscus Effects 0.000 abstract 4
- 238000005516 engineering process Methods 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000003331 infrared imaging Methods 0.000 description 2
- 238000005457 optimization 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
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 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
The invention provides an infrared relay image rotation lens using chalcogenide glass. The infrared relay image rotation lens includes a first bonding lens and a second bonding lens that are spaced from each other from an object space to an image space along an optical axis, the infrared relay image rotation lens is characterized in that the first bonding lens is formed by the bonding of a first lens and a second lens, the second bonding lens is formed by the bonding of a third lens and a fourth lens, the first lens is a meniscus lens with positive focal power, the second lens is a meniscus lens with negative focal power, the third lens is a meniscus lens with negative focal power, and the fourth lens is a meniscus lens with positive focal power. The infrared relay image rotation lens using chalcogenide glass has good optical performance and realizes 1:1 lens image rotation within the wavelength of 8-12[mu]m.
Description
Technical field
The present invention relates to a kind of camera lens, particularly relate to a kind of LONG WAVE INFRARED relaying image transfer lens applying chalcogenide glass.
Background technology
The object of relaying relay system is used to be transformed on another position by the picture of a position, relaying image transfer lens is used for extended parallel port system or flipped image, be applicable in various imaging applications, such as endoscope, rifle aim at, periscope system, and in microscope and military infrared imaging system etc.Relaying image transfer lens uses array or imaging len to be placed on after eyepiece, is intended to the length extending imaging system, or install when the object that cannot close will check.
The material of conventional infrared lens comprises germanium, zinc sulphide, zinc selenide etc.Preparation cost is high on the one hand for these materials, is unfavorable for the large-scale promotion of commercial market, can only adopt the expensive time-consuming sphere required for the imaging of Single point diamond turning o technology processing high-quality or aspheric lens on the other hand.In addition, conventional infra-red material kind is few, and refractive index, thermal refractive index coefficient, Abbe constant, thermal expansivity etc. concern optical system achromatism, the optical parametric of heat difference is selected also comparatively limited.Therefore, also for the lens design of infrared imaging system brings many limitation.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of LONG WAVE INFRARED relaying image transfer lens applying chalcogenide glass.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of infrared relaying image transfer lens applying chalcogenide glass, comprise along the first spaced from the object side to the image side cemented lens of optical axis and the second cemented lens, it is characterized in that: described first cemented lens is bonded by the first eyeglass and the second eyeglass, described second cemented lens is bonded by the 3rd eyeglass and the 4th eyeglass, described 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, 4th eyeglass is the falcate eyeglass of positive light coke.
Described first eyeglass and the 4th eyeglass symmetrical, described second eyeglass and the 3rd eyeglass symmetrical.
Preferably, above-mentioned first, second, third and fourth eyeglass meets the following conditions:
0.8 < f
11/f
1< 0.9,4 < | f
12/ f
1| < 5, | f
11| < | f
12|, | f
11|=| f
22|, | f
12|=| f
21|, 4 < | f
21/ f
2| < 5,0.8 < f
22/ f
1< 0.9, | f
21| > | f
22|, wherein f
11, f
12, f
21and f
22be respectively the focal length of first, second, third and fourth eyeglass, f
1and f
2be respectively the focal length of the first cemented lens and the second cemented lens.
Preferably, be provided with diaphragm between described first cemented lens and the second cemented lens, described diaphragm is the symcenter between the first cemented lens and the second cemented lens.
Preferably, the first cemented lens and the second cemented lens are formed by germanium material and chalcogenide glass adheres respectively.
Preferably, the object distance of this camera lens and image distance are 170mm.
Preferably, the object height of this camera lens and image height are 80mm.
As optional embodiment of the present invention, described first eyeglass and the 4th eyeglass are germanium material, and this second eyeglass and the 3rd eyeglass are chalcogenide glass material; Or described second eyeglass and the 3rd eyeglass are germanium material, this first eyeglass and the 4th eyeglass are chalcogenide glass material.
Compared with prior art, the invention has the advantages that employing emerging infra-red material in recent years---chalcogenide glass substitutes conventional infra-red material and prepares eyeglass, preparation technology is comparatively economical convenient, thus significantly reduce the time and financial cost that make high image quality infrared lens, by rational constituent optimization, the chalcogenide glass that preparation has the optical parametrics such as special refractive index, thermal refractive index coefficient can be designed targetedly, effectively expanded the design freedom of infrared optics imaging system.The present invention's application chalcogenide glass LONG WAVE INFRARED relaying image transfer lens, has good optical property, achieves 1:1 relaying image rotation within the scope of 8 ~ 12 mum wavelengths.
Accompanying drawing explanation
Fig. 1 is the structural representation of the infrared relaying image transfer lens of the embodiment of the present invention.
Fig. 2 is the MTF figure of infrared relaying image transfer lens when central vision of the embodiment of the present invention.
Fig. 3 is the MTF figure of infrared relaying image transfer lens when image height 28mm of the embodiment of the present invention.
Fig. 4 is the MTF figure of infrared relaying image transfer lens when image height 40mm of the embodiment of the present invention.
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 that the infrared relaying image transfer lens of the embodiment of the present invention is respectively 0 at object height, 56mm, 80mm time point range figure.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
The LONG WAVE INFRARED relaying image transfer lens of the embodiment of the present invention, as shown in Figure 1, comprise the first cemented lens 1 of spaced setting, diaphragm 3 and the second cemented lens 2, along optical axis from the object side to the image side, first cemented lens 1 is bonded by the first eyeglass E1 and the second eyeglass E2, second cemented lens 2 is bonded by the 3rd eyeglass E3 and the 4th eyeglass E4, first eyeglass E1 is the falcate eyeglass of positive light coke, second eyeglass E2 is the falcate eyeglass of negative power, 3rd eyeglass E3 is the falcate eyeglass of negative power, 4th eyeglass E4 is the falcate eyeglass of positive light coke.First eyeglass E1 and the 4th eyeglass E4 is symmetrical structure, and the second eyeglass E2 and the 3rd eyeglass E3 is symmetrical structure, and diaphragm 3 is symmetry system having symmetry center, i.e. the symcenter of the first cemented lens 1 and the second cemented lens 2.
And the optical parametric of above-mentioned four eyeglasses meets following relational expression:
0.8 < f
11/ f
1< 0.9,4 < | f
12/ f
1| < 5, | f
11| < | f
12|, | f
11|=| f
22|, | f
12|=| f
21|, 4 < | f
21/ f
2| < 5,0.8 < f
22/ f
1< 0.9, | f
21| > | f
22|, wherein f
11, f
12, f
21and f
22be respectively the focal length of first, second, third and fourth eyeglass, f
1and f
2be respectively the 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 is chalcogenide glass material GASIR2, and wherein GASIR2 is the chalcogenide glass of French Umicore Company, and its component is Ge
20sb
15se
65, other chalcogenide glass materials can certainly be adopted.Material also can be replaced mutually, and such as first, fourth eyeglass is chalcogenide glass material, and second and third eyeglass is that Ge material also can.
Camera lens of the present invention adopts the lens combination of different profile and utilizes reasonable focal power to distribute the function realizing 1:1 LONG WAVE INFRARED relaying image rotation, and this camera lens can be the object 1:1 geometric ratio image rotation of 80mm to image height.Optical focal length is 120mm, and modulation transfer function is close to diffraction limit.The focal power relation of each eyeglass is rationally limited to certain limit and system is simple, chalcogenide glass can utilize mould pressing technology reduction eyeglass to prepare difficulty, and various optical aberration can be made to reach balance, realize the image quality close to diffraction limit, make optical property more excellent.By selecting to possess the combination of specific Abbe constant, the chalcogenide glass of specific dn/dt relation and germanium material, achieve the 1:1 image rotation in the infrared long-wave limit of 8 μm ~ 12 μm.
Preferably, the focal power of each eyeglass is as follows: Φ
1=Φ
4=7.29 × 10
-3, Φ
2=Φ
3=-1.31 × 10
-3.Wherein Φ
1, Φ
2, Φ
3and Φ
4be respectively the focal power of the first eyeglass E1, the second eyeglass E2, the 3rd eyeglass E3 and the 4th eyeglass E4.
Along optical axis from object space to the surperficial number consecutively of image space by all parts, two minute surfaces of the first eyeglass E1 are respectively S1, S2, and two minute surfaces of the second eyeglass E2 are S3, S4, diaphragm STOP, two minute surfaces of the 3rd eyeglass E3 are S5, S6, and two minute surfaces of the 4th eyeglass E4 are S7, S8.The eyeglass correlation parameter of concrete system that what table 1 was listed is, comprises the surface type in eyeglass face, radius-of-curvature, and also have thickness, material, the eyeglass radius of each eyeglass, OBJ is the first surface 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 wherein thickness of each, represents that this face is to the distance on the optical axis below between a face.
According to the LONG WAVE INFRARED relaying image transfer lens of the application chalcogenide glass that table 1 designs, its optical system focal length is 120mm, system adopts Polaroid mode, system first surface is 170.00mm to the axial space length of the first bonding eyeglass, second bonding eyeglass is 170.00mm to the axial space distance of image planes, and the distance between two cemented lenses is 70.00mm, and middle 35mm place arranges diaphragm, object height and image height are 80mm, and applicable wavelengths is 8 ~ 12 μm.
Design parameter in above table is only illustration type, and the value etc. of each lens components radius-of-curvature, interval, face and refractive index, is not limited to, by the value shown in said system, can take other value, can reaches similar technique effect.
Therefore the present invention's application chalcogenide glass LONG WAVE INFRARED relaying image transfer lens, has good optical property, achieves 1:1 relaying image rotation within the scope of 8 ~ 12 mum wavelengths.
Fig. 2-6 illustrates each optical property of this camera lens, Fig. 2-4 is respectively the FFTMTF figure of infrared relaying image transfer lens of the present invention under different object height, transverse axis represents different spatial frequencys, vertical pivot represents degree of modulation, and the meridian curve (T) in the figure of all visual fields and sagitta of arc curve (S) are all closely and close to diffraction limit.Fig. 5 is the chromatic curve of this camera lens, and transverse axis is focus offset, and vertical pivot is wavelength, illustrates in the scope of 8 ~ 12 μm, there is no focus offset at 8 μm and 12 μm of places, and achromatism effect is better, and peak excursion is in wavelength when being 10 μm.Fig. 6 a, 6b, 6c are the point range figures when different object height of this lens system, and object height is respectively 0,56mm and 80mm, and the point range figure of relaying image transfer lens when all angles is all in an Aili spot, and system effect is better.
The present invention adopts emerging infra-red material-chalcogenide glass in recent years to substitute conventional infra-red material and prepare eyeglass, preparation technology is comparatively economical convenient, thus significantly reduce the time and financial cost that make high image quality infrared lens, by rational constituent optimization, the chalcogenide glass that preparation has the optical parametrics such as special refractive index, thermal refractive index coefficient can be designed targetedly, effectively expanded the design freedom of infrared optics imaging system.The present invention's application chalcogenide glass LONG WAVE INFRARED relaying image transfer lens, has good optical property, achieves 1:1 relaying image rotation within the scope of 8 ~ 12 mum wavelengths.
Claims (8)
1. apply the infrared relaying image transfer lens of chalcogenide glass for one kind, comprise along optical axis the first cemented lens (1) spaced from the object side to the image side and the second cemented lens (2), it is characterized in that: described first cemented lens (1) is bonded by the first eyeglass (E1) and the second eyeglass (E2), described second cemented lens (2) is bonded by the 3rd eyeglass (E3) and the 4th eyeglass (E4), the falcate eyeglass that described first eyeglass (E1) is positive light coke, the falcate eyeglass that second eyeglass (E2) is negative power, the falcate eyeglass that 3rd eyeglass (E3) is negative power, the falcate eyeglass that 4th eyeglass (E4) is positive light coke.
2. the infrared relaying image transfer lens of application chalcogenide glass as claimed in claim 1, it is characterized in that: described first eyeglass (E1) and the 4th eyeglass (E4) symmetrical, described second eyeglass (E2) and the 3rd eyeglass (E3) symmetrical.
3. the infrared relaying image transfer lens of application chalcogenide glass as claimed in claim 1, is characterized in that: above-mentioned first, second, third and fourth eyeglass meets the following conditions:
0.8 < f
11/f
1< 0.9,4 < | f
12/ f
1| < 5, | f
11| < | f
12|, | f
11|=| f
22|, | f
12|=| f
21|, 4 < | f
21/ f
2| < 5,0.8 < f
22/ f
1< 0.9, | f
21| > | f
22|, wherein f
11, f
12, f
21and f
22be respectively the focal length of first, second, third and fourth eyeglass, f
1and f
2be respectively the focal length of the first cemented lens (1) and the second cemented lens (2).
4. the infrared relaying image transfer lens of application chalcogenide glass as claimed in claim 1, it is characterized in that: be provided with diaphragm (3) between described first cemented lens (1) and the second cemented lens (2), described diaphragm (3) is the symcenter between the first cemented lens (1) and the second cemented lens (2).
5. the infrared relaying image transfer lens of application chalcogenide glass as claimed in claim 1, is characterized in that: the first cemented lens (1) and the second cemented lens (2) are formed by germanium material and chalcogenide glass adheres respectively.
6. the infrared relaying image transfer lens of application chalcogenide glass as claimed in claim 1, is characterized in that: object distance and the image distance of this camera lens are 170mm.
7. the infrared relaying image transfer lens of application chalcogenide glass as claimed in claim 1, is characterized in that: object height and the image height of this camera lens are 80mm.
8. the infrared relaying image transfer lens of application chalcogenide glass as claimed in claim 5, it is characterized in that: described first eyeglass (E1) and the 4th eyeglass (E4) are germanium (Ge) material, this second eyeglass (E2) and the 3rd eyeglass (E3) are chalcogenide glass material; Or described second eyeglass (E2) and the 3rd eyeglass (E3) are germanium (Ge) material, this first eyeglass (E1) and the 4th eyeglass (E4) are chalcogenide glass material.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105116520A true CN105116520A (en) | 2015-12-02 |
| CN105116520B CN105116520B (en) | 2017-10-03 |
Family
ID=54664547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510622276.8A Active CN105116520B (en) | 2015-09-25 | 2015-09-25 | A kind of infrared relaying image transfer lens of application chalcogenide glass |
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|---|---|
| CN (1) | CN105116520B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802479A (en) * | 2017-03-22 | 2017-06-06 | 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 |
| CN117572607A (en) * | 2024-01-16 | 2024-02-20 | 苏州高视半导体技术有限公司 | Cylindrical lens with negative distortion and broadband and microscopic optical system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020057501A1 (en) * | 1999-03-08 | 2002-05-16 | Fang Lei | Image transmission system for endoscopes and method of producing a rod lens |
| JP2013228631A (en) * | 2012-04-26 | 2013-11-07 | Nikon Corp | Vibration-isolated infrared optical system and infrared imaging apparatus including the same |
| CN103930827A (en) * | 2011-11-08 | 2014-07-16 | 瑞尔D股份有限公司 | Imaging path speckle mitigation |
-
2015
- 2015-09-25 CN CN201510622276.8A patent/CN105116520B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020057501A1 (en) * | 1999-03-08 | 2002-05-16 | Fang Lei | Image transmission system for endoscopes and method of producing a rod lens |
| CN103930827A (en) * | 2011-11-08 | 2014-07-16 | 瑞尔D股份有限公司 | Imaging path speckle mitigation |
| JP2013228631A (en) * | 2012-04-26 | 2013-11-07 | Nikon Corp | Vibration-isolated infrared optical system and infrared imaging apparatus including the same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802479A (en) * | 2017-03-22 | 2017-06-06 | 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 |
| 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 |
| CN117572607A (en) * | 2024-01-16 | 2024-02-20 | 苏州高视半导体技术有限公司 | Cylindrical lens with negative distortion and broadband and microscopic optical system |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105116520B (en) | 2017-10-03 |
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