CN109682473A - A kind of adjustable uniform source of light system of spatial distribution - Google Patents
A kind of adjustable uniform source of light system of spatial distribution Download PDFInfo
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- CN109682473A CN109682473A CN201910001359.3A CN201910001359A CN109682473A CN 109682473 A CN109682473 A CN 109682473A CN 201910001359 A CN201910001359 A CN 201910001359A CN 109682473 A CN109682473 A CN 109682473A
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- 238000001228 spectrum Methods 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000013307 optical fiber Substances 0.000 claims abstract description 8
- 230000003595 spectral effect Effects 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 6
- 230000010287 polarization Effects 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000002310 reflectometry Methods 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 230000009471 action Effects 0.000 claims description 2
- 238000005422 blasting Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 210000002858 crystal cell Anatomy 0.000 claims description 2
- 239000004519 grease Substances 0.000 claims description 2
- 239000000523 sample Substances 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
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- 239000010408 film Substances 0.000 description 1
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- 230000003760 hair shine Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 231100000252 nontoxic Toxicity 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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Classifications
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- 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
- G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
A kind of adjustable uniform source of light system of spatial distribution, light-splitting device isolate each wavelength monochromatic light of light source；Each wavelength monochromatic light isolated converges on light passing control array by condenser lens, and light passing, which controls array, has selectivity to each wavelength monochromatic light of convergence, and control penetrates the brightness of light, realizes that the distribution of uniform source of light output spectrum is adjustable；It integrates ball and is equipped with input port, delivery outlet and detection mouth；Integrating sphere inner wall has high diffusing reflection rate coating, and the light for that will input carries out light mixing, and in the higher light of delivery outlet output uniformity；Input port is connect with light passing control array；Detection mouth is connected with detection part with optical fiber.Common incident light source is divided into the light on each wavelength and adjusts light passing control array both end voltage by light-splitting device, realize the control passed through to monochromatic light on each wavelength, there is selectivity to spectrum, control penetrates the brightness of light, realize that the distribution of uniform source of light input spectrum is adjustable, light mixing is carried out in integrating sphere, realizes uniform source of light function.
Description
Technical field
The present invention relates to spectroradiometric measurements to correct field, specially a kind of uniform source of light.
Background technique
For uniform source of light as ideal dodging device, feature is the spectrum of output, light radiation with preferable Lambertian
Property and the higher uniformity, be usually used in the spectrum correction of imaging system, sensitive detection parts, and calibration space remote sensing telemetering detection system
System homogeneity correction.The basic structure of uniform source of light is the sphere of boring, the high diffusion of even application reflectivity on ball wall
Material is provided with input light source mouth and a delivery outlet on ball wall, by detector or spectrometer monitoring output situation, provides various
The information such as luminosity, radiancy, the uniformity.
Conventional uniform light source emergent light is generally the linear superposition of incident light source, due to being limited by incident light source and needing to contain
Lid is difficult to accomplish adjustable to single-wavelength light brightness compared with wide spectral range, outgoing spatial distribution.Even if using narrowband incident light
Source is difficult to realize the adjusting of continuous single-wavelength light brightness in than wider spectral region due to being limited by incident light source number.
Customization uniform source of light system currently on the market is mostly to use narrow-band LED light source as input light source, the light of covering
Spectral limit is relatively narrow, nor continuous wavelength is adjustable, the spatial distribution that may be implemented also is limited to.
Summary of the invention
The object of the present invention is to provide a kind of adjustable uniforms source of light of spatial distribution to be passed through using general incident light source
Light-splitting device and light passing control antenna array control incidence enter the optical wavelength and brightness of integrating sphere, then light mixing is carried out in integrating sphere,
Realize that the distribution of uniform source of light output spectrum is adjustable, and spectrum is adjustable in the realization of any wavelength.
The technical solution adopted by the present invention to solve the technical problems is: a kind of adjustable uniform source of light system of spatial distribution
System, the light-splitting device isolate each wavelength monochromatic light of light source；Each wavelength monochromatic light isolated is converged by condenser lens
On light passing control array, light passing, which controls array, has selectivity to each wavelength monochromatic light of convergence, and can control through light
Brightness realizes that the distribution of uniform source of light output spectrum is adjustable；The integral ball is equipped with an input port, delivery outlet and
One detection mouth；Integrating sphere inner wall has high diffusing reflection rate coating, and the light for that will input carries out light mixing, and defeated in delivery outlet
The higher light of uniformity out；Input port is connect with light passing control array；Detection mouth is connected with detection part with optical fiber.
The present invention compared to the prior art, the advantage is that: common incident light source is divided into each wave by light-splitting device
Light in length, then array both end voltage is controlled by adjusting light passing, its polarization state is controlled, is realized logical to monochromatic light on each wavelength
The control crossed to have selectivity to spectrum, and can control the brightness through light, realize the distribution of uniform source of light input spectrum
It is adjustable, light mixing is finally carried out in integrating sphere, realizes the function of uniform source of light.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a schematic structural view of Embodiment 1 of the present invention.
Description of symbols: ordinary light source (1), light-splitting device (2), condenser lens (3), light passing control array (4), light are again
Integrated ball (5), entrance port (6), exit portal (7), detection mouth (8), detection part (9), optical fiber (10).
Specific embodiment
Disclosed exemplary embodiment that the present invention will be described in more detail below with reference to accompanying drawings, these embodiments be in order to
The present invention is enough thoroughly understood, and range disclosed by the invention can be fully disclosed to those skilled in the art.
Although showing exemplary embodiment disclosed by the invention in attached drawing, it being understood, however, that the present invention without that should be illustrated here
Embodiment limited.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of the description present invention, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second ", " third " etc. are used for description purposes only, it is not understood to indicate or imply
Relative importance.Meanwhile in the description of the present invention unless specifically defined or limited otherwise, term " connected ", " connection " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For the general of this field
For logical technical staff, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
A kind of adjustable uniform source of light system of spatial distribution, including ordinary light source 1, light-splitting device 2, condenser lens 3, light passing
Control array 4, light integrated ball 5, entrance port 6, exit portal 7, detection mouth 8, detection part 9 and optical fiber 10 again.
Light-splitting device 2 isolates each wavelength monochromatic light of light source 1；Each wavelength monochromatic light isolated passes through condenser lens 3
It converges on light passing control array 4, each wavelength monochromatic light that light passing controls 4 pairs of array convergences has selectivity, and controllable saturating
The brightness of light is crossed, realizes that the distribution of uniform source of light output spectrum is adjustable；It integrates ball 5 and is equipped with an input port 6, an output
Mouth 7 and a detection mouth 8；5 inner wall of integrating sphere has high diffusing reflection rate coating, the light progress light mixing for that will input, and
The higher light of 7 output uniformity of delivery outlet；Input port 6 is connect with light passing control array 4；Detection mouth 8 and detection part 9 use optical fiber
10 connections.
Embodiment
As shown in Figure 1, ordinary light source 1 shines, inputs on light-splitting device 2, be divided incident light source by light-splitting device 2
At the light of Single wavelength.The light of Single wavelength is incident on by light passing by condenser lens 3 again and controls array 4, by adjusting light passing control
4 both end voltage of array controls different wave length light transmission rate, realizes the control of incident integrating sphere light.The incidence of light integrated ball 5 again
Mouth 6 enters integrating sphere and carries out light mixing, exports uniform light by exit portal 7.It detects and uses optical fiber connecting detection component 9 on mouth 8, in real time
The intracorporal spectrum of ball, light radiation performance are monitored, and feeds back uniform source of light output spectrum situation, realizes automatic regulation function.
High diffusing reflection rate coating is sprayed using the coating that baric sulfur materials are formulated；By the spraying of this coating
Surface has the diffusing characteristic diffuser of almost Perfect, and the reflectivity in 400 to 1100 nm wave-length coverages is greater than 95%；High diffusing reflection
Rate coating can be easily coated on any substrate by way of spraying；Substrate surface need to first pass through specially treated, general first
Need to substrate surface carry out grease removal, then carrying out blasting treatment again makes substrate surface become coarse, finally carry out again spraying and
Drying.Such spraying method realizes faster prototype, and ensures that final design is not limited by coating processes；
And the high diffusing reflection coating being made with this mode is cheap and nontoxic, 100 °C or so at a temperature of have it is preferable
Thermal stability.
Light-splitting device 2 is the prism grating of special designing, and light-splitting device 2 has spectral effect and high transmittance；This point
Optical device can be the similar device such as grating or prism.
The spectral of light-splitting device 2 acts on realization principle: to same medium, the frequency of light is higher, and medium is to this light
Refractive index it is bigger.In visible light, the frequency highest of purple light, feux rouges frequency minimum.When white light passes through prism, prism pair
The refractive index of purple light is maximum, and after light passes through prism, the deviation degree of purple light is maximum, and feux rouges deviation degree is minimum.In this way, prism will
The light of different frequency separates.The pass of the light incidence angle and refraction angle after prism of different colours can be calculated according to the law of refraction
System, so that it is determined that position of the light of different colours after refraction by prism.
Grating is also referred to as diffraction grating.It is the optics member for making light that dispersion (being decomposed into spectrum) occur using more seam diffraction principles
Part.It is one piece of flat glass or sheet metal for being carved with a large amount of parallel wide, equidistant slits (groove).The slot number of grating is very
Greatly, every millimeter tens to thousands of general.Interference between diffraction and each seam that monochromatic collimated beam passes through each seam of grating, forms dark
The pattern that striped is very wide, bright fringe is very thin, these are sharp thin and bright striped is referred to as spectral line.The position of spectral line is different with wavelength,
After polychromatic light passes through grating, the spectral line of different wave length occurs in different positions and forms spectrum.
By grating equationIt is found that for identical spectrum progression m, with same incident angle α
The mixed light that the different wave length λ 1 on grating, λ 2, λ 3..... are formed is projected, the interference that every kind of wavelength generates greatly is all located at
Different angle positions；I.e. the diffraction light of different wave length is emitted with different angle of diffraction β.This just illustrates, for given grating,
The same level-one main of different wave length is big or secondary constitute greatly is not overlapped with the different wave length spectral line in level-one grating spectrum, but
It is arranged by the order of order of wavelength, forms a series of discrete spectral lines.In this way, mixing incident various different wave lengths
Complex light is separated each other after optical grating diffraction.Here it is the light splitting principles of diffraction grating.
The high transmittance of light-splitting device 2 acts on realization principle: by increasing anti-reflection film on light-splitting device surface.
Light passing controls array 4, and the polarization state by adjusting LCD is realized monochromatic through situation on each wavelength of control；
Light passing controls array 4 and is furnished with control system, by the transmission state for adjusting array device.
The control system of light passing control array 4 includes Current Voltage source, and Current Voltage meter, Current Voltage feedback device leads to
It crosses and exports different Current Voltage size control LCD polarization states, to realize that monochromatic light is through situation on control wavelength.LCD
Construction be that liquid crystal cell is placed in the parallel glass substrate of two panels, on lower baseplate glass be arranged TFT thin film transistor (TFT), upper base
Colored filter is set on glass sheet, is changed by the signal on TFT with Current Voltage to control the rotation direction of liquid crystal molecule,
Reach display purpose whether controlling the outgoing of each pixel polarised light to reach.
Condenser lens 3 ensures that the spectrum needed can be by LCD, and reduces energy loss.Condenser lens plays converging action, will
The light of dispersion converges on LCD, it is ensured that the spectrum of needs can be by LCD, to reduce energy loss.
For detection part 9 with the intracorporal spectrum of real-time monitoring ball, light radiation performance can be with Real-time Feedback uniform source of light output light
Situation is composed, realizes automatic regulation function；Detection part 9 is photoelectric probe, photometer or spectrometer.
Although the various embodiments described above are described, once a person skilled in the art knows basic wounds
The property made concept, then additional changes and modifications can be made to these embodiments, so the above is only the embodiment of the present invention, not
Therefore scope of patent protection of the invention is limited, it is all to utilize equivalent structure made by description of the invention and accompanying drawing content or wait
Process transformation is imitated, being applied directly or indirectly in other relevant technical fields, similarly includes in patent protection of the invention
Within the scope of.
Claims (6)
1. a kind of adjustable uniform source of light system of spatial distribution, it is characterised in that: including ordinary light source (1), light-splitting device (2),
Integrated ball (5), entrance port (6), exit portal (7), detection mouth (8), the inspection again of condenser lens (3), light passing control array (4), light
Survey component (9) and optical fiber (10)；
The light-splitting device (2) isolates each wavelength monochromatic light of light source (1)；Each wavelength monochromatic light isolated is through over-focusing
Mirror (3) converges in light passing control array (4), and light passing, which controls array (4), has selectivity to each wavelength monochromatic light of convergence, and
The controllable brightness through light realizes that the distribution of uniform source of light output spectrum is adjustable；The integral ball (5) is defeated equipped with one
Entrance (6), a delivery outlet (7) and a detection mouth (8)；Integrating sphere (5) inner wall has high diffusing reflection rate coating, and being used for will
The light of input carries out light mixing, and in the higher light of delivery outlet (7) output uniformity；Input port (6) and light passing control array (4) are even
It connects；Mouth (8) and detection part (9) is detected to be connected with optical fiber (10).
2. the adjustable uniform source of light system of spatial distribution according to claim 1, it is characterised in that: the high diffusing reflection rate
Coating is sprayed using the coating that baric sulfur materials are formulated；The high diffusing reflection rate coating is in 400 to 1100 nm wavelength
Reflectivity in range is greater than 95%；The high diffusing reflection rate coating can be easily coated in any substrate by way of spraying
On；Substrate surface need to first pass through specially treated, generally first need to carry out grease removal to substrate surface, then carrying out blasting treatment again makes
Substrate surface becomes coarse, is finally sprayed and is dried again.
3. the adjustable uniform source of light system of spatial distribution according to claim 1, it is characterised in that: light-splitting device (2) is
Grating or prism, the light-splitting device (2) have spectral effect and high transmittance.
4. the adjustable uniform source of light system of spatial distribution according to claim 1, it is characterised in that: light passing controls array
(4) monochromatic on each wavelength of polarization state realization control by adjusting LCD to penetrate situation；The light passing controls array
(4) it is furnished with control system, by the transmission state for adjusting array device；
The control system of light passing control array (4) includes Current Voltage source, Current Voltage meter, and Current Voltage feedback device passes through
Different Current Voltage size control LCD polarization states are exported, to realize that monochromatic light is through situation on control wavelength；LCD's
Construction is that liquid crystal cell is placed in the parallel glass substrate of two panels, and TFT(thin film transistor (TFT) is arranged on lower baseplate glass), upper base
Colored filter is set on glass sheet, is changed by the signal on TFT with Current Voltage to control the rotation direction of liquid crystal molecule,
Reach display purpose whether controlling the outgoing of each pixel polarised light to reach.
5. the adjustable uniform source of light system of spatial distribution according to claim 1, it is characterised in that: condenser lens (3) rises
Converging action converges to the light of dispersion on LCD, it is ensured that the spectrum of needs can pass through LCD.
6. the adjustable uniform source of light system of spatial distribution according to claim 1, it is characterised in that: the detection part
(9) the intracorporal spectrum of real-time monitoring ball, light radiation performance, Real-time Feedback uniform source of light output spectrum situation realize automatic adjustment
Function；The detection part (9) is photoelectric probe, photometer or spectrometer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910001359.3A CN109682473A (en) | 2019-01-02 | 2019-01-02 | A kind of adjustable uniform source of light system of spatial distribution |
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| CN201910001359.3A CN109682473A (en) | 2019-01-02 | 2019-01-02 | A kind of adjustable uniform source of light system of spatial distribution |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220857A (en) * | 2019-06-26 | 2019-09-10 | 重庆金山医疗器械有限公司 | Colored light mixing method and system, material concentration detection method and imaging of tissue method |
| CN112683396A (en) * | 2021-03-18 | 2021-04-20 | 武汉精创电子技术有限公司 | Integrating sphere quantitative spectrum output method and system and electronic equipment |
| CN112731675A (en) * | 2020-12-31 | 2021-04-30 | 苏州朗晖光电科技有限公司 | Liquid crystal-based optical filtering optical path with dynamically adjustable band-stop wavelength and method |
| CN114486182A (en) * | 2021-12-14 | 2022-05-13 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Multiband dynamic target simulation device based on DMD spatial light modulation technology |
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| US20080174777A1 (en) * | 2006-04-11 | 2008-07-24 | University Of Wyoming | Spectrometers using 2-dimensional microelectromechanical digital micromirror devices |
| CN102288391A (en) * | 2011-07-22 | 2011-12-21 | 苏州大学 | Spectral target generator for measuring optical transfer function |
| CN103018010A (en) * | 2012-11-30 | 2013-04-03 | 北京振兴计量测试研究所 | Light source spectrum modulating device |
| CN104449355A (en) * | 2014-11-24 | 2015-03-25 | 侨健新能源科技（苏州）有限公司 | Method for preparing high temperature resistant diffuse reflection coating |
| CN209326789U (en) * | 2019-01-02 | 2019-08-30 | 上海倍蓝光电科技有限公司 | A kind of adjustable uniform source of light system of spatial distribution |
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| US20080174777A1 (en) * | 2006-04-11 | 2008-07-24 | University Of Wyoming | Spectrometers using 2-dimensional microelectromechanical digital micromirror devices |
| CN102288391A (en) * | 2011-07-22 | 2011-12-21 | 苏州大学 | Spectral target generator for measuring optical transfer function |
| CN103018010A (en) * | 2012-11-30 | 2013-04-03 | 北京振兴计量测试研究所 | Light source spectrum modulating device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110220857A (en) * | 2019-06-26 | 2019-09-10 | 重庆金山医疗器械有限公司 | Colored light mixing method and system, material concentration detection method and imaging of tissue method |
| CN112731675A (en) * | 2020-12-31 | 2021-04-30 | 苏州朗晖光电科技有限公司 | Liquid crystal-based optical filtering optical path with dynamically adjustable band-stop wavelength and method |
| CN112683396A (en) * | 2021-03-18 | 2021-04-20 | 武汉精创电子技术有限公司 | Integrating sphere quantitative spectrum output method and system and electronic equipment |
| CN114486182A (en) * | 2021-12-14 | 2022-05-13 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Multiband dynamic target simulation device based on DMD spatial light modulation technology |
| CN114486182B (en) * | 2021-12-14 | 2024-03-22 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Multiband dynamic target simulation device based on DMD spatial light modulation technology |
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