CN105588643B - Thermal infrared divides aperture polarization imaging optical system - Google Patents
Thermal infrared divides aperture polarization imaging optical system Download PDFInfo
- Publication number
- CN105588643B CN105588643B CN201610106962.4A CN201610106962A CN105588643B CN 105588643 B CN105588643 B CN 105588643B CN 201610106962 A CN201610106962 A CN 201610106962A CN 105588643 B CN105588643 B CN 105588643B
- Authority
- CN
- China
- Prior art keywords
- aperture
- imaging
- microscope group
- optical system
- group
- 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.)
- Active
Links
- 238000003384 imaging method Methods 0.000 title claims abstract description 70
- 230000003287 optical effect Effects 0.000 title claims abstract description 36
- 230000010287 polarization Effects 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000000711 polarimetry Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J4/00—Measuring polarisation of light
- G01J4/04—Polarimeters using electric detection means
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
Abstract
Divide aperture polarization imaging optical system the invention discloses a kind of Thermal infrared bands, it includes the preposition microscope group of looking in the distance in aperture altogether, divides aperture imaging microscope group, altogether aperture relay imaging microscope group and infrared detector；Divide aperture imaging microscope group to include four channel of polarization, be sequentially placed polarizer and one group of sub- lens group, their polarization direction is different, so as to detect the polarization information of target；Divide aperture imaging microscope group imaging after field lens adjusts, by common aperture relay imaging microscope group secondary imaging on infrared detector focal plane.Because a point aperture has identical optical characteristics, realize to being detected while different polarization states information, and be imaged on simultaneously in the different zones of same infrared detector.Optical system imaging quality provided by the invention is good, and polarimetry precision is high, is not influenceed by external disturbance, can be applied to Quick moving platform or the fast-changing target of detection, compact-sized, movement-less part, has 100% cold stop efficiency.
Description
Technical field
The present invention relates to a kind of thermal infrared to divide aperture polarization imaging optical system, divides aperture multi channel imaging suitable for polarization
System.
Background technology
The reflection of the detectable object of polarized imaging system or the polarization information of itself radiation, polarization information can provide pass
In a variety of important physical messages such as the material surface attribute of object, roughness, shape, in astronomical observation, medical diagnosis, distant
Sensing is used and military identifies etc. that field has broad application prospects.
Polarization state typically by Stokes vector representations, in order to obtain complete Stokes Vector Messages, at least needs to obtain
Image of four width on the different polarization states of target.Polarized imaging system main at present has timesharing detection system and while detected
System, timesharing detection system are realized by introducing the element such as the optical elements such as rotatory polarization piece or wave plate, position phase variable modulator
Timesharing measurement to different polarization states.But the time delay in timesharing detection system measurement process will necessarily be introduced by object
Change or the quick mobile caused error of platform.Detection system uses multichannel light splitting technology mainly to have and utilizes rib simultaneously
Mirror or beam splitter divide amplitude techniques, divide focal plane technology, Yi Ji what detector focal plane placed integrated polarizing element
That more subsystems are placed on aperture divides aperture imaging technology.Amplitude techniques are divided to use four optical systems and four infrared acquisitions
Device, the performance difference between different optical systems and detector can introduce measurement error, and divide amplitude system bulk larger；Divide Jiao
Planar technique is to arrange micropolarizer part in detector focal plane, and processing and manufacturing difficulty is very big, and Existential Space registration error；
Divide aperture system because only with a detector, four tunnels divide aperture system simultaneously by each polarization state information imaging of object
On the different surfaces of detector, there is volume compact, dependable performance, the advantages that movement-less part.Existing thermal infrared divides hole
Footpath imaging technique（Bibliography J. Larry Pezzaniti and David B. Chenault. Proc. of SPIE
58880. 2550.）, farther out, and centre is equipped with multiple relaying camera lenses for cold stop range finder focal plane, is not suitable at present
Encapsulated moulding infrared refrigeration photodetector.
The content of the invention
For the present invention in view of the deficienciess of the prior art, providing a kind of volume compact, image quality is high, is easy at data
Reason, works in Thermal infrared bands, and emergent pupil divides aperture imaging system with detector cold stop accurate match for polarization imager
System.
To reach above-mentioned purpose, the technical scheme is that providing a kind of thermal infrared point aperture polarization imaging optical system
System, it includes the preposition microscope group of looking in the distance in aperture altogether, divides aperture imaging microscope group, altogether aperture relay imaging microscope group and infrared detector；Institute
The subchannel for dividing aperture imaging microscope group to include four laid out in parallel stated, wherein, the structure of three subchannels is identical, along light path side
To a polarizer, one group of passage object lens and one group of passage field lens is sequentially placed, the polarizer of three subchannels is polarized direction point
Wei not be 0 °, 45 ° and 90 °；4th subchannel is sequentially placed the identical material glass piece of a uniform thickness, one group of passage thing along optical path direction
Mirror and one group of passage field lens；The aperture relay imaging microscope group altogether includes aperture altogether and relays field lens and altogether aperture relay imaging mirror；
Common aperture relay imaging mirror is by target secondary imaging on the photosurface of infrared detector.
The ratio between total focal length of the preposition microscope group of looking in the distance in aperture altogether of the present invention, its focal length and optical system is 1.5:1~
2.5:1.The preposition microscope group of looking in the distance in aperture can be thermal infrared Galilean telescope or thermal infrared Kepler telescope altogether.
The ratio between the focal length of passage object lens in of the present invention point of aperture imaging microscope group and the total focal length of optical system are
0.5:1~2:1.Passage object lens in point aperture imaging microscope group can be telephoto objective, or double separation object lens.
Aperture relay imaging microscope group altogether of the present invention is three-chip type or double-Gauss objective.
Compared with prior art, advantage of the invention is that：
1st, using dividing aperture optical system while obtain each polarization state information of target, and it is imaged on same infrared acquisition
Compact-sized on device, stability is good.
2nd, four points of aperture optical systems have identical optical texture characteristic, are not disturbed by factors such as external environments,
Measurement accuracy is high.
3rd, the optical system structure of secondary imaging is employed, by aperture diaphragm secondary imaging in the position of cold stop, is had
Altogether the advantages of cold stop, it is ensured that 100% cold stop efficiency, accurately matched with detector cold stop.
4th, four points of apertures on the detector, are avoided after an image planes by organizing aperture lens group imaging altogether after common
By dividing the eccentric introduced image planes in aperture to distort, as matter is good.
5th, system camera lens employs conventional infra-red material, has relatively low processing and manufacturing cost.
Brief description of the drawings
Fig. 1 is the structural representation that thermal infrared provided in an embodiment of the present invention divides aperture polarized imaging system；
Fig. 2 is the modulation transfer function curve map that thermal infrared provided in an embodiment of the present invention divides aperture polarized imaging system；
Fig. 3 is the point range figure that thermal infrared provided in an embodiment of the present invention divides aperture polarized imaging system；
Fig. 4 is the mesh distortion figure that thermal infrared provided in an embodiment of the present invention divides aperture polarized imaging system；
Wherein：1st, altogether the preposition first piece of lens of microscope group of looking in the distance in aperture, 2, altogether the preposition second piece of lens of microscope group of looking in the distance in aperture, 3,
Preposition the 3rd piece of lens of microscope group of looking in the distance in aperture altogether, 4, preposition the 4th piece of lens of microscope group of looking in the distance in aperture altogether, 5, polarizer, 6, divide aperture
It is imaged first piece of lens of microscope group, 7, divide aperture imaging microscope group second piece of lens, 8, divide aperture field lens, 9, aperture relaying field lens altogether,
10th, aperture relay imaging microscope group first piece of camera lens altogether, 11, second piece of camera lens of aperture relay imaging microscope group altogether, 12, aperture relaying altogether
It is imaged the 3rd piece of camera lens of microscope group, 13, aperture relay imaging microscope group the 4th piece of camera lens altogether, 14, aperture relay imaging microscope group the 5th altogether
Block camera lens, 15, detector cold stop, 16, infrared detector.
Embodiment
With reference to the accompanying drawings and examples technical solution of the present invention is made further to be specifically described.
Embodiment 1
The present embodiment provides a kind of thermal infrared and divides aperture polarization imaging optical system, and it includes the preposition telescope in aperture altogether
Group, divide aperture imaging microscope group, altogether aperture relay imaging microscope group and infrared detector.Aperture set is divided to include four channel of polarization, often
Individual channel of polarization places a polarizer, a component aperture imaging microscope group along optical path direction respectively.Its service band is heat
Infrared band, the focal length of camera lens is 68mm, and F/# 2, full filed is 3.2 ° × 4 ° of face visual field.
Referring to accompanying drawing 1, it is the structural representation for the optical lens that the present embodiment provides, and the preposition microscope group of looking in the distance in aperture can altogether
Using thermal infrared Galilean telescope or thermal infrared Kepler telescope, a concrete structure in the present embodiment includes hole altogether
First piece of lens, 1, second piece of lens 2, the 3rd piece of lens 3 and the 4th piece of lens 4 of the preposition microscope group of looking in the distance in footpath, the altogether preposition prestige in aperture
The ratio between the focal length of remote microscope group and the total focal length of optical system are 1.5:1~2.5:1.
Aperture imaging microscope group is divided to include the subchannel of four laid out in parallel, wherein, the structure of three subchannels is identical, along light
Road direction is sequentially placed 5, one groups of passage object lens of a polarizer including dividing first piece of lens 6 of aperture imaging microscope group and second piece saturating
7, one groups of passage field lenses 8 of mirror, it is respectively 0 °, 45 ° and 90 ° that the polarizer of three subchannels, which is polarized direction, the 4th subchannel edge
Optical path direction is sequentially placed a material glass piece identical with the uniform thickness of polarizer 5, makes up optical path difference to obtain the light intensity of object letter
Breath, and one group of passage object lens and one group of passage field lens；The focal length and optical system of the passage object lens divided in aperture imaging microscope group
The ratio between total focal length be 0.5:1~2:1.
After the preposition microscope group of looking in the distance in common aperture, light line width is compressed and limits visual field incident light, into dividing aperture sub
System, after being placed with difference and being polarized the polarizer in direction, divided aperture imaging microscope group Polaroid and relay field lens 9 in common aperture
Place, by common aperture relay imaging microscope group through detector cold stop 15, secondary imaging is on infrared detector 16；Altogether aperture relaying into
As microscope group can be three-chip type or double-Gauss objective, specifically included in the present embodiment first piece of camera lens, 10, second pieces of camera lenses 11,
3rd piece of camera lens 12, the 4th piece of camera lens 13 and the 5th piece of camera lens 14.Infrared detector can use gazing type infrared focal plane array
Detector.
What the present embodiment provided is used for dividing the specific data of each lens of aperture optical system and being adopted for thermal infrared polarization imaging
Material is shown in Table 1.
Table 1
。
Referring to accompanying drawing 2, it is the modulation transfer function of system（MTF）Curve, at nyquist frequency 32lp/mm, it is
The MTF of system is more than 0.5, close to diffraction limit.
Referring to accompanying drawing 3, it is the point range figure in ray tracing image plane, and the circle in figure represents system diffraction Airy disc.Respectively
Visual field point range figure energy is concentrated in the range of Aili spot, has good image quality.
Referring to accompanying drawing 4, it is grid distortion figure, and relative distortion is less than 1.13%, and maximum distortion amount is 20um, bigger
In 1 pixel.The existing distortion of system can be corrected by image procossing.
Claims (7)
1. a kind of thermal infrared divides aperture polarization imaging optical system, it is characterised in that：It includes the preposition microscope group of looking in the distance in aperture altogether, point
Aperture imaging microscope group, common aperture relay imaging microscope group and infrared detector；Described divides aperture imaging microscope group to include four side by side
The subchannel of arrangement, wherein, the structure of three subchannels is identical, and a polarizer, one group of passage are sequentially placed along optical path direction
Object lens and one group of passage field lens, it is respectively 0 °, 45 ° and 90 ° that the polarizer of three subchannels, which is polarized direction,；4th subchannel edge
Optical path direction is sequentially placed the identical material glass piece of a uniform thickness, one group of passage object lens and one group of passage field lens；In the aperture altogether
Include aperture altogether after imaging microscope group and relay field lens and altogether aperture relay imaging mirror；Aperture relay imaging mirror is total to by target secondary imaging
In on the photosurface of infrared detector.
2. a kind of thermal infrared according to claim 1 divides aperture polarization imaging optical system, it is characterised in that：Described is total to
The ratio between total focal length of the preposition microscope group of looking in the distance in aperture, its focal length and optical system is 1.5:1~2.5:1.
3. a kind of thermal infrared according to claim 1 or 2 divides aperture polarization imaging optical system, it is characterised in that：It is described
The preposition microscope group of looking in the distance in common aperture be thermal infrared Galilean telescope or thermal infrared Kepler telescope.
4. a kind of thermal infrared according to claim 1 divides aperture polarization imaging optical system, it is characterised in that：Described point
The ratio between the focal length of passage object lens in aperture imaging microscope group and the total focal length of optical system are 0.5:1~2:1.
5. a kind of thermal infrared according to claim 1 or 4 divides aperture polarization imaging optical system, it is characterised in that：It is described
The passage object lens divided in aperture imaging microscope group be telephoto objective, or double separation object lens.
6. a kind of thermal infrared according to claim 1 divides aperture polarization imaging optical system, it is characterised in that：Described is total to
Aperture relay imaging microscope group is three-chip type or double-Gauss objective.
7. a kind of thermal infrared according to claim 1 divides aperture polarization imaging optical system, it is characterised in that：Described is red
External detector is gazing type infrared focal plane array seeker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610106962.4A CN105588643B (en) | 2016-02-28 | 2016-02-28 | Thermal infrared divides aperture polarization imaging optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610106962.4A CN105588643B (en) | 2016-02-28 | 2016-02-28 | Thermal infrared divides aperture polarization imaging optical system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105588643A CN105588643A (en) | 2016-05-18 |
| CN105588643B true CN105588643B (en) | 2018-03-23 |
Family
ID=55928395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610106962.4A Active CN105588643B (en) | 2016-02-28 | 2016-02-28 | Thermal infrared divides aperture polarization imaging optical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105588643B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390214B (en) * | 2017-06-30 | 2020-06-30 | 中国科学院上海光学精密机械研究所 | Passive correlated imaging optical system |
| TWI668471B (en) * | 2018-09-14 | 2019-08-11 | 量子光電股份有限公司 | Head mounted display and optical device thereof |
| CN110207823A (en) * | 2019-03-19 | 2019-09-06 | 天津大学 | Four polarization state of medium-wave infrared while imaging optical system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205642622U (en) * | 2016-02-28 | 2016-10-12 | 苏州大学 | Thermal infrared divides aperture polarization imaging optics system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944937B (en) * | 2012-11-27 | 2014-12-24 | 北京理工大学 | Sub-aperture polarization imaging system |
| CN103197403B (en) * | 2013-04-26 | 2015-01-21 | 苏州大学 | Aperture-divided optical lens for polarization imager |
-
2016
- 2016-02-28 CN CN201610106962.4A patent/CN105588643B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205642622U (en) * | 2016-02-28 | 2016-10-12 | 苏州大学 | Thermal infrared divides aperture polarization imaging optics system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105588643A (en) | 2016-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105372796B (en) | In refrigeration-type Shared aperture/long two grades of varifocal optical systems of infrared double-waveband double-view field | |
| CN103822712B (en) | Imaging method and imaging spectrometer based on Wollaston prism light splitting | |
| CN105588643B (en) | Thermal infrared divides aperture polarization imaging optical system | |
| CN104977705A (en) | Large-visual-field off-axis reflection zooming optical system | |
| CN104272162A (en) | Imaging optical system, imaging device | |
| CN105258796A (en) | Co-optical-path miniature multispectral imaging system | |
| CN103698900A (en) | Optical imaging method and system for large-scale high-resolution remote sensing camera | |
| CN105157836A (en) | Spectral imaging device for polarization state synchronizing acquisition and method thereof | |
| CN107741275A (en) | A kind of multi-optical spectrum imaging system | |
| CN205642622U (en) | Thermal infrared divides aperture polarization imaging optics system | |
| CN104267484B (en) | Small size uncooled dual-field-of-view infrared optical system | |
| CN104155000B (en) | A kind of linear gradient optical filter type multi-spectral imager based on secondary imaging | |
| CN104792415A (en) | Complete-polarization high-spectral imaging unit | |
| CN104102018A (en) | Double pit local high resolution imaging system | |
| CN103197403B (en) | Aperture-divided optical lens for polarization imager | |
| CN207472424U (en) | A kind of multi-optical spectrum imaging system | |
| CN102998778A (en) | Refrigerating infrared double-view-field optical lens | |
| US20130221206A1 (en) | Systems and Methods for Conveying Energy | |
| CN104932083B (en) | A kind of large area array dynamic monitor and measurement camera optical system | |
| CN109901302B (en) | Infrared refrigeration type imaging optical system | |
| CN102829767B (en) | Long-focus transmission-type quasi telecentric three-linear-array stereoscopic mapping optical system | |
| CN105259639A (en) | Exchangeable type lens and mirrorless digital camera comprising same | |
| Yuan et al. | Polarimetric imaging system based on double-layer prisms pair with polarizer coating and one camera | |
| CN108415144A (en) | A kind of preposition camera lens of polarization imaging | |
| CN103823303B (en) | A kind of meticulous Fourier's imaging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210824 Address after: 215163 310-19, software building, No. 3, Peiyuan Road, science and Technology City, high tech Zone, Suzhou, Jiangsu Province Patentee after: Suzhou pulisi Technology Co.,Ltd. Address before: 215123 No. 199 benevolence Road, Suzhou Industrial Park, Jiangsu, Suzhou Patentee before: Suzhou University |