CN106989820B - Multispectral imaging optical system based on homocentric sphere concentrating element - Google Patents
Multispectral imaging optical system based on homocentric sphere concentrating element Download PDFInfo
- Publication number
- CN106989820B CN106989820B CN201710196448.9A CN201710196448A CN106989820B CN 106989820 B CN106989820 B CN 106989820B CN 201710196448 A CN201710196448 A CN 201710196448A CN 106989820 B CN106989820 B CN 106989820B
- Authority
- CN
- China
- Prior art keywords
- light
- concentrating element
- homocentric sphere
- imaging
- sphere
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 36
- 238000000701 chemical imaging Methods 0.000 title claims abstract description 26
- 238000003384 imaging method Methods 0.000 claims abstract description 34
- 238000001228 spectrum Methods 0.000 claims abstract description 29
- 230000003595 spectral effect Effects 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 13
- 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 claims description 3
- 229910052732 germanium Inorganic materials 0.000 claims description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 3
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 3
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 3
- 210000001747 pupil Anatomy 0.000 claims description 3
- 239000000523 sample Substances 0.000 description 5
- 102100027340 Slit homolog 2 protein Human genes 0.000 description 2
- 101710133576 Slit homolog 2 protein Proteins 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000000007 visual effect Effects 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
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/0208—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using focussing or collimating elements, e.g. lenses or mirrors; performing aberration correction
-
- 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
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/2823—Imaging spectrometer
-
- 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
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/2823—Imaging spectrometer
- G01J2003/2826—Multispectral imaging, e.g. filter imaging
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
- Microscoopes, Condenser (AREA)
Abstract
New multispectral imaging optical system based on homocentric sphere concentrating element, belong to multi-optical spectrum imaging technology field, in the presence of solving the problems, such as existing multispectral imaging device, to meet modern multispectral imaging to real-time, quickly, the use demand of accurately image, convergence of rays is imaged onto slit by incident ray by pre-objective, it is again incident on collimation lens, the collimated collimated of light incides spectro-grating, spectro-grating splits the light into the light of different spectral coverage, the light of different spectral coverage passes through homocentric sphere concentrating element, spectrum sample is converted into the spatial sampling of different incidence angles, then the repeated imaging microscope group focal imaging of light is on cmos detector, obtain spectral information；The relay system of the system provides virtual diaphragm for homocentric sphere concentrating element, improves the diaphragm free degree of homocentric sphere concentrating element, makes the incident light of different angle have identical paraxial characteristic, has the more optical axis characteristics of light path altogether, realizes multispectral staring imaging.
Description
Technical field
The present invention relates to a kind of multispectral imaging optical system based on homocentric sphere concentrating element, belong to multispectral imaging skill
Art field.
Background technology
With the gradual development of spectral imaging technology, multispectral imaging equipment is obtained in many fields widely should
With.Therefore, the spectrum picture of multiple and different wave bands how is fast and accurately obtained, the research for spectral imaging technology has
Very important meaning.Chinese Patent Application No. is " 201010190068.2 ", and patent name is " multispectral area array CCD imaging
The optical system of instrument ", the system are made of two sets of subsystems, and first set subsystem realizes ultraviolet, blue, green, red and near-infrared
The spectral information of wave band, system are obtained the information of different-waveband by two lens groups and corresponding detector and are imaged；The
Two sets of subsystems use two panels germainium lens and Long Wave Infrared Probe to realize the light of long wave infrared region to the information imaging of acquisition
Spectrum information；The invention realizes that target is imaged at the same time in six wave bands using two sets of optical systems.However, the invention is implemented only in six
A wave band is imaged at the same time, and light spectrum image-forming is limited in scope, while will reduce optical energy utilization rate using the light splitting of multiple beam splitters.
Chinese Patent Application No. is " 201510670422.4 ", a kind of entitled " the miniaturization multispectral imaging of light path altogether system
System ", discloses a kind of by image-forming objective lens, prism splitter system, the combined system of multispectral optical filter, detector system and letter
Number processing system composition obtained while realizing four road spectral signals and the common light path multi-optical spectrum imaging system of record, wherein rib
Mirror beam splitting system includes three Amici prisms；Detector system includes four detectors；Multispectral optical filter combined system includes
Four groups of filter sets.But the shortcomings that this method, is mainly shown as：Obtained by the optical filter of 12 different centre wavelengths different
The spectral information of wave band, system spectrum areas imaging are limited；Whenever filtering device obtains the quasi- achromatic map of a frame, spectrum imaging system
Swept using pushing away, and change thang-kng parameter obtains the spectrum of specific objective or scene and spatial information sacrifices temporal resolution, it is real
When property is poor；Coating process is very big to multispectral imaging influential effect at the same time.
The content of the invention
In the presence of the present invention is in order to solve the problems, such as existing multispectral imaging device, there is provided one kind is focused on based on homocentric sphere
The real-time multi-spectral imaging optical system of element, to meet modern multispectral imaging to real-time, quick, accurately image use need
Ask.
Technical scheme is as follows：
New real-time multi-spectral imaging optical system based on homocentric sphere concentrating element, it includes：Pre-objective group, collimation
Sampling system is changed in light splitting microscope group and multichannel frequency-idle running, and the light that pre-objective group is sent is flat by collimation light splitting microscope group outgoing
Row light, directional light change sampling system by multichannel frequency-idle running and realize multispectral imaging；
Pre-objective group is made of pre-objective and slit；
Collimation beam splitting system is made of collimation lens and spectro-grating；
Multichannel frequency-idle running is changed sampling system and is made of homocentric sphere concentrating element, relay imaging microscope group and cmos detector,
The entrance pupil of relay imaging microscope group is overlapped with the center of homocentric sphere concentrating element；
Convergence of rays is imaged onto slit by incident ray by pre-objective, is again incident on collimation lens, and light is through standard
Straight collimated incides spectro-grating, and spectro-grating splits the light into the light of different spectral coverage, and the light of different spectral coverage passes through homocentric sphere
Spectrum sample, is converted into the spatial sampling of different incidence angles by concentrating element, and then the repeated imaging microscope group focal imaging of light exists
On cmos detector, spectral information is obtained.
Relay imaging microscope group projects on homocentric sphere concentrating element and forms virtual diaphragm.
The homocentric sphere concentrating element is the homocentric sphere made of the different transparent optical material of multilayer refractive index, is had
Sphere symmetry.
For infrared band light spectrum image-forming, the homocentric sphere concentrating element is made of infrared optical material germanium or zinc selenide；
For visible light wave range light spectrum image-forming, the homocentric sphere concentrating element is made of common transparent optical material；For ultraviolet waves
Section light spectrum image-forming, the homocentric sphere concentrating element are made of ultraviolet optical material magnesium fluoride or calcirm-fluoride.
The relay imaging microscope group and the position of cmos detector and the space angle of homocentric sphere concentrating element emergent light
It is corresponding, achieve the purpose that parallel processing.
Beneficial effects of the present invention：
1st, the device is more optical axis systems, improves spectral resolution.
2nd, multispectral image information is obtained without resolving, real-time is higher.
3rd, it is divided without using more beam splitters, improves the utilization rate of optical energy.
4th, the spectrum picture of the higher multiple wave bands of same visual field continuity from below can be obtained at the same time, and timeliness is higher.
5th, detectable imaging spectral wave band quantity is adjustable, and system spectrum areas imaging has very big carry compared with the prior art
Height, as long as technology allows the spectral information that can obtain desired all wave bands in theory.
6th, the relay system of the system provides virtual diaphragm for homocentric sphere concentrating element, improves homocentric sphere concentrating element
The diaphragm free degree, makes the incident light of different angle have identical paraxial characteristic, has the more optical axis characteristics of light path altogether, realizes light more
The staring imaging of spectrum.
Brief description of the drawings
Fig. 1 is the structure diagram of the real-time multi-spectral imaging optical system based on homocentric sphere concentrating element.
In figure：1st, pre-objective；2nd, slit；3rd, collimation lens；4th, spectro-grating；5th, homocentric sphere concentrating element；6th, relay
It is imaged microscope group；7th, COMS detectors；8th, virtual diaphragm.
Embodiment
The present invention is described in further details below in conjunction with the accompanying drawings.
As shown in Figure 1, the real-time multi-spectral imaging optical system based on homocentric sphere concentrating element, its structure include：It is preposition
Sampling system is changed in objective lens, collimation light splitting microscope group and multichannel frequency-idle running.The light that pre-objective group is sent is by collimation spectroscope
Group outgoing is directional light, and directional light changes sampling system by multichannel frequency-idle running and realizes multispectral imaging.
Pre-objective group is made of pre-objective 1 and slit 2；
Collimation beam splitting system is made of collimation lens 3 and spectro-grating 4；
Multichannel frequency-idle running changes sampling system by 7 groups of homocentric sphere concentrating element 5, relay imaging microscope group 6 and cmos detector
Into.The entrance pupil of relay imaging microscope group 6 is overlapped with the center of homocentric sphere concentrating element 5, i.e., virtual diaphragm 8 gathers positioned at homocentric sphere
The center of burnt element 5.
Convergence of rays is imaged onto slit 2 by incident ray by pre-objective 1, is again incident on collimation lens 3, light warp
For 3 collimated incident of collimation lens to spectro-grating 4, spectro-grating 4 splits the light into the light of different spectral coverage, and the light of different spectral coverage passes through same
Spectrum sample, is converted into the spatial sampling of different incidence angles by bulbus cordis concentrating element 5, and then the repeated imaging microscope group 6 of light focuses on
It is imaged on cmos detector 7, obtains spectral information.It is virtual that relay imaging microscope group 6 projects formation on homocentric sphere concentrating element 5
Diaphragm 8.
The homocentric sphere concentrating element 5 is the homocentric sphere made of the different transparent optical material of multilayer refractive index, tool
There is Sphere symmetry.For infrared band light spectrum image-forming, homocentric sphere concentrating element 5 can be by infrared optical material such as germanium, zinc selenide etc.
It is made；For visible light wave range light spectrum image-forming, can be made of common transparent optical material；For ultraviolet band light spectrum image-forming,
It can be made of ultraviolet optical material such as magnesium fluoride, calcirm-fluoride etc..
Spectrum sample is converted into the spatial sampling of different incidence angles by homocentric sphere concentrating element 5, by relay imaging microscope group 6
It is imaged on cmos detector 7, spectrum sample can be converted to outgoing space angle by changing sampling system using multichannel frequency-idle running
Sampling, system spectrum resolution ratio is determined by the relative angle of cmos detector 7 at this time.
Described its quantity of relay imaging microscope group 6 is adjustable, the scope of how much decision imaging spectrals of quantity, also influences spectrum point
Resolution.
The relay imaging microscope group 6 and the position of cmos detector 7 and the Space Angle of 5 emergent light of homocentric sphere concentrating element
Spend corresponding, achieve the purpose that parallel processing.
The virtual diaphragm 8 is to be projected to be formed in homocentric sphere concentrating element 5 by relay imaging microscope group 6, it is improved
The diaphragm free degree of homocentric sphere concentrating element 5, makes the incident light of different angle have identical paraxial characteristic, has light path altogether
More optical axis characteristics, realize multispectral real-time staring imaging, while have the effect such as confine optical beam bore as actual diaphragm.
Claims (5)
1. the real-time multi-spectral imaging optical system based on homocentric sphere concentrating element, it is characterized in that, its structure bag
Include：Sampling system is changed in pre-objective group, collimation light splitting microscope group and multichannel frequency-idle running, the light warp that pre-objective group is sent
It is directional light to cross collimation light splitting microscope group outgoing, and directional light changes sampling system by multichannel frequency-idle running and realizes multispectral imaging；
Pre-objective group is by pre-objective（1）And slit（2）Composition；Beam splitting system is collimated by collimation lens（3）And spectro-grating
（4）Composition；
Multichannel frequency-idle running changes sampling system by homocentric sphere concentrating element（5）, relay imaging microscope group（6）With CMOS detectors
（7）Composition, relay imaging microscope group（6）Entrance pupil and homocentric sphere concentrating element（5）Center overlap；
Incident ray passes through pre-objective（1）Convergence of rays is imaged onto slit（2）, it is again incident on collimation lens（3）On, light
The collimated lens of line（3）Collimated incident is to spectro-grating（4）, spectro-grating（4）Split the light into the light of different spectral coverage, difference spectrum
The light of section passes through homocentric sphere concentrating element（5）, spectrum sample is converted into the spatial sampling of different incidence angles, then in light warp
After imaging microscope group（6）Focal imaging is in CMOS detectors（7）On, obtain spectral information.
2. the real-time multi-spectral imaging optical system based on homocentric sphere concentrating element according to claim 1, its feature
It is, relay imaging microscope group（6）In homocentric sphere concentrating element（5）Upper projection forms virtual diaphragm（8）.
3. the real-time multi-spectral imaging optical system based on homocentric sphere concentrating element according to claim 1, its feature
It is, the homocentric sphere concentrating element（5）Homocentric sphere symmetrical structure with multilayer different refractivity.
4. the real-time multi-spectral imaging optical system based on homocentric sphere concentrating element according to claim 1, its feature
It is, the homocentric sphere concentrating element（5）It is made of transparent optical material, for infrared band light spectrum image-forming, homocentric sphere focuses on
Element（5）It is made of infrared optical material germanium or zinc selenide；For visible light wave range light spectrum image-forming, homocentric sphere concentrating element（5）
It is made of common transparent optical material；For ultraviolet band light spectrum image-forming, homocentric sphere concentrating element（5）By ultraviolet optics material
Material magnesium fluoride or calcirm-fluoride are made.
5. the real-time multi-spectral imaging optical system based on homocentric sphere concentrating element according to claim 1, its feature
It is, the relay imaging microscope group（6）With CMOS detectors（7）Position and homocentric sphere
Concentrating element（5）The space angle of emergent light is corresponding, achievees the purpose that parallel processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710196448.9A CN106989820B (en) | 2017-03-29 | 2017-03-29 | Multispectral imaging optical system based on homocentric sphere concentrating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710196448.9A CN106989820B (en) | 2017-03-29 | 2017-03-29 | Multispectral imaging optical system based on homocentric sphere concentrating element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106989820A CN106989820A (en) | 2017-07-28 |
| CN106989820B true CN106989820B (en) | 2018-05-15 |
Family
ID=59413019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710196448.9A Active CN106989820B (en) | 2017-03-29 | 2017-03-29 | Multispectral imaging optical system based on homocentric sphere concentrating element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106989820B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108205194B (en) * | 2017-12-13 | 2020-07-17 | 北京华航无线电测量研究所 | Visible light and infrared composite system based on spherical concentric primary mirror |
| TWI704379B (en) * | 2019-07-05 | 2020-09-11 | 明達醫學科技股份有限公司 | Spectrometer |
| CN112432705B (en) * | 2020-10-28 | 2021-12-31 | 同济大学 | Multispectral imaging system and method based on dynamic visual axis adjustment principle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914367A (en) * | 2012-10-25 | 2013-02-06 | 浙江大学 | Multispectral imaging device and multispectral imaging method based on compressed sensing |
| CN103134587A (en) * | 2013-01-29 | 2013-06-05 | 北京理工大学 | Spectrum light splitting imaging system light path based on volume hologram grating component light splitting |
| CN103234632A (en) * | 2013-03-26 | 2013-08-07 | 中国科学院上海技术物理研究所 | Push broom type spectrum imaging optical system with high resolution and wide visual field |
| CN103698900A (en) * | 2013-12-30 | 2014-04-02 | 苏州大学 | Optical imaging method and system for large-scale high-resolution remote sensing camera |
| CN105606217A (en) * | 2016-01-08 | 2016-05-25 | 西安交通大学 | Image-spectrum-polarization-state integrated obtaining apparatus and method |
| CN105807405A (en) * | 2016-04-26 | 2016-07-27 | 中国科学院西安光学精密机械研究所 | Constant resolution multi-spectral optical system applicable to large dynamic range and nearly-hemispherical view field |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015179965A1 (en) * | 2014-05-27 | 2015-12-03 | GHGSat Inc. | Fabry-perot interferometer based satellite detection of atmospheric trace gases |
-
2017
- 2017-03-29 CN CN201710196448.9A patent/CN106989820B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914367A (en) * | 2012-10-25 | 2013-02-06 | 浙江大学 | Multispectral imaging device and multispectral imaging method based on compressed sensing |
| CN103134587A (en) * | 2013-01-29 | 2013-06-05 | 北京理工大学 | Spectrum light splitting imaging system light path based on volume hologram grating component light splitting |
| CN103234632A (en) * | 2013-03-26 | 2013-08-07 | 中国科学院上海技术物理研究所 | Push broom type spectrum imaging optical system with high resolution and wide visual field |
| CN103698900A (en) * | 2013-12-30 | 2014-04-02 | 苏州大学 | Optical imaging method and system for large-scale high-resolution remote sensing camera |
| CN105606217A (en) * | 2016-01-08 | 2016-05-25 | 西安交通大学 | Image-spectrum-polarization-state integrated obtaining apparatus and method |
| CN105807405A (en) * | 2016-04-26 | 2016-07-27 | 中国科学院西安光学精密机械研究所 | Constant resolution multi-spectral optical system applicable to large dynamic range and nearly-hemispherical view field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106989820A (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104457708B (en) | A kind of compact multispectral camera | |
| CN106872034B (en) | Quick three-dimensional muti-spectrum imaging system | |
| US9945721B2 (en) | Selective wavelength imaging systems and methods | |
| US9239263B2 (en) | Image mapped spectropolarimetry | |
| US20090103792A1 (en) | Depth of Field Extension for Optical Tomography | |
| CN106989820B (en) | Multispectral imaging optical system based on homocentric sphere concentrating element | |
| US10007109B2 (en) | Wavelength discriminating imaging systems and methods | |
| CN204963859U (en) | Remote sensing parameter camera | |
| CN110017897B (en) | Compact monocular multichannel combined multispectral imaging system | |
| CN211824967U (en) | System for measuring virtual image distance of binocular near-eye display | |
| CN205808912U (en) | Compact high-resolution wide visual field spectrum imaging system | |
| CN103091258A (en) | Multispectral imager based on liquid zooming technology | |
| CN109164463B (en) | Multi-aperture view field partially-overlapped polarization thermal imaging method and device | |
| CN107741275A (en) | A kind of multi-optical spectrum imaging system | |
| Zhang et al. | Snapshot imaging spectrometer based on a microlens array | |
| CN205594223U (en) | Two light imaging lens of long burnt visible light near -infrared of formula of turning back | |
| DE102012005939B4 (en) | Camera system with a zoom lens | |
| CN112067128A (en) | High-speed static dispersion imaging spectrum device and using method thereof | |
| CN207472424U (en) | A kind of multi-optical spectrum imaging system | |
| CN108873366A (en) | Multi-band Polarization light splitting and integrated approach and system | |
| CN106197666B (en) | Minimize non refrigerating infrared imaging spectrometer and method | |
| CN103604499B (en) | spectrum reconstruction method based on reverse double light path | |
| CN110285884B (en) | Optical system of sunlight-induced chlorophyll fluorescence detection hyperspectral imager | |
| CN105865626A (en) | Hyperspectral imager based on rotary filter monochromator | |
| CN111854950A (en) | Optical system of multi-time image surface spectrometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |