CN102495473A - Visible light and infrared light splitting system - Google Patents
Visible light and infrared light splitting system Download PDFInfo
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- CN102495473A CN102495473A CN2011103596198A CN201110359619A CN102495473A CN 102495473 A CN102495473 A CN 102495473A CN 2011103596198 A CN2011103596198 A CN 2011103596198A CN 201110359619 A CN201110359619 A CN 201110359619A CN 102495473 A CN102495473 A CN 102495473A
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Abstract
A visible light and infrared light splitting system comprises a window, a primary mirror, a secondary mirror, a lens group, a light splitting piece, two semi-transmitting and semi-reflecting lenses, three total reflection mirrors and two optical filters, wherein the window, the secondary mirror, the primary mirror and the lens group are sequentially placed on a main optical path; the light splitting piece is arranged behind the lens group, the first and the second semi-transmitting and semi-reflecting lenses are sequentially arranged behind the light splitting piece; the second total reflection mirror is placed on the optical reflection path of the first semi-transmitting and semi-reflecting lens; the first optical filter is placed on the optical transmission path of the second semi-transmitting and semi-reflecting lens, and the third total reflection mirror is placed on the optical reflection path; and the second optical filter is placed on the optical reflection path of the third total reflection mirror. The light splitting system can split one beam of light into four beams of light, wherein one of the four beams is visible light, the other three beams are infrared light, one of the three beams of infrared light is all-wave infrared light, and the other two beams of infrared light are monochromatic light with different wavelengths. The light splitting system can be used for real-time shooting and fusion of visible images and infrared images, can also be used in the field of infrared temperature measurement, and can provide a focusing function.
Description
Technical field
The present invention relates to a kind of beam splitting system; Relate in particular to a kind of visible light and infrared light beam splitting system of utilizing light splitting piece and semi-transparent semi-reflecting lens; This system can be divided into a branch of and infrared light three beams of visible light with a light beams; Wherein a branch of is full wave infrared light, and other two bundles are the different monochromatic infrared light of wavelength.
Background technology
The measurement of combustion flame is the problem that engineering technical personnel paid close attention to of being engaged in industries such as combustion technology research and power, metallurgy, chemical industry always, also is one of the important research direction of subject of burning for a long time therefore.The basic demand of fuel combustion is to set up and keep stable combustion flame.And because the general impurity content of fuel is more, calorific value is lower, the difficulty of catching fire, problems such as combustion instability, burning efficiency reduction and pollutant discharge amount increase often appear.Just seem very necessary so in stove, be equipped with furnace flame surveillance multiple functional, dependable performance.At present the domestic flame monitoring equipment of on boiler, installing generally can only be monitored flickering of flame, even some can Temperature Field Measurement, also can't realize the measurement of real-time online.
Visual flame temperature measurement method commonly used is a color comparison temperature measurement.Its ultimate principle is through beam splitting system; The light beam that measured target sent is divided into the different light beam of two or more centre wavelengths; Each light beam has certain broadband and forms the corresponding gray level image of a width of cloth, can obtain temperature to be measured through the brightness value that compares different images.
Existing flame visualization measuring system mainly contains two kinds according to the CCD number classification of using:
1. monocular CCD method.Utilize the redgreenblue characteristic of single colored CCD,, and utilize two-color thermometry to measure the temperature of flame through the corresponding data of analysis red, green, blue three road spectrum;
2. binocular CCD method.Collect the radiation heat image of different wave length simultaneously through two CCD, and pass through the temperature that two-color thermometry is measured flame.
The problem that these methods exist is well to show the burning background, like the situation of furnace wall cooling, burner etc.; The equipment more complicated is like method 2; Different CCD characteristics increase the influence of measurement result, can not guarantee that the image size that collects is consistent.Like method 2.
Summary of the invention
The technical matters that the object of the invention solves provides a kind of visible light and infrared light beam splitting system; This beam splitting system can be divided into four light beams with a light beam, and wherein a branch of is visible light, and three beams is an infrared light in addition; Be a branch of full wave infrared light that is, other two bundles are the different monochromatic light of wavelength.
This beam splitting system can be used for the real-time shooting and the fusion of infrared thermal imaging, visible light and infrared light image, also can be used for the infrared measurement of temperature field, like color comparison temperature measurement.And this beam splitting system has the focusing function.
Visible light provided by the invention and infrared light beam splitting system comprise window, primary mirror, secondary mirror, lens combination, light splitting piece, two semi-transparent semi-reflecting lens, three completely reflecting mirrors and two optical filters;
The light channel structure of said beam splitting system is:
On main optical path, place window, secondary mirror, primary mirror and lens combination successively, secondary mirror is between window and primary mirror, and wherein secondary mirror and primary mirror all are catoptron;
Light splitting piece is placed at rear in lens combination; Light splitting piece becomes
angle with main optical path; Reflecting surface upwards; On the reflected light path of light splitting piece, place first completely reflecting mirror; First completely reflecting mirror becomes
angle with light path, reflecting surface is downward;
On the light path at light splitting piece rear, place the first semi-transparent semi-reflecting lens and the second semi-transparent semi-reflecting lens successively; The first semi-transparent semi-reflecting lens become
angle with main optical path; Reflecting surface upwards; On the reflected light path of the first semi-transparent semi-reflecting lens, place second completely reflecting mirror; Second completely reflecting mirror becomes
angle with light path, reflecting surface is downward;
The second semi-transparent semi-reflecting lens become
angle with light path; Reflecting surface is downward; On the transmitted light path of the second semi-transparent semi-reflecting lens, place first optical filter; First optical filter is vertical with light path; On the reflected light path of the second semi-transparent semi-reflecting lens, place the 3rd completely reflecting mirror; The 3rd completely reflecting mirror becomes
angle with light path; Reflecting surface is upwards placed one second optical filter on the reflected light path of the 3rd completely reflecting mirror, second optical filter is vertical with light path;
A branch of light that measured target sends is divided into four bundle light after this beam splitting system, a branch of light is visible light, can directly carry out visual observation after being received by detector; Other three-beams are infrared light, and wherein a branch of light is not full wave infrared light through optical filter, can be used for the measurement of infrared thermal imaging and temperature, and other two-beams are the different monochromatic infrared light of wavelength through different optical filters, can be used for color comparison temperature measurement.
Described secondary mirror can move front and back on light path, makes this beam splitting system have the focusing function.
The centre wavelength of the permeable light wave of described first optical filter is λ
1, the centre wavelength of the permeable light wave of second optical filter is λ
2, λ wherein
1≠ λ
2Wherein optical filter can be changed according to different measurement needs.
Advantage of the present invention and beneficial effect:
The present invention proposes a kind of visible light and infrared light beam splitting system, this beam splitting system can be divided into four light beams with a light beam, and a branch of is visible light, and three beams is an infrared light in addition, and wherein two bundles are the different monochromatic light of wavelength, and a branch of in addition is full wave infrared light.
Use the present invention and can take infrared image and visible images simultaneously, and have the focusing function, be convenient to the real-time shooting and the fusion of infrared light and visible images.
Use the present invention and can also be used for infrared thermal imaging, also can utilize the color comparison temperature measurement technology, monitor the change of temperature field of monitored target in real time, and carry out the real time fail diagnosis, for example be applied to the real-time monitoring and the analysis of flame temperature field.Can select different optical filters according to the needs of measuring simultaneously, thereby obtain the monochromatic infrared light of different wave length.
Description of drawings
Fig. 1 is the structure and the principle schematic of visible light of the present invention and infrared light beam splitting system.
For the object of the invention and characteristics more clearly are described, be elaborated below in conjunction with accompanying drawing and embodiment.
Embodiment
Visible light as shown in Figure 1 and infrared light beam splitting system comprise window, primary mirror, secondary mirror, lens combination, light splitting piece, two semi-transparent semi-reflecting lens, three completely reflecting mirrors and two optical filters, and two optical filters can see through the centre wavelength difference of light wave.Wherein the effect of light splitting piece is reflect visible light, projection infrared light; The effect of semi-transparent semi-reflecting lens is that a branch of light is divided into the two-beam that light intensity equates; Optical filter can see through the light wave of single wavelength.Its light channel structure is:
On main optical path, place window 1, secondary mirror 3, primary mirror 2 and lens combination 4 successively, secondary mirror 3 is between window 1 and primary mirror 2, and secondary mirror 3 can move front and back on light path, makes this beam splitting system have the focusing function;
Place light splitting piece 5 at lens combination 4 rears; Light splitting piece 5 becomes
angle with main optical path; Reflecting surface upwards; On its reflected light path, place first completely reflecting mirror 11; First completely reflecting mirror 11 becomes
angle with main optical path, reflecting surface is downward;
Place the first semi-transparent semi-reflecting lens 6 and the second semi-transparent semi-reflecting lens 7 successively at light splitting piece 5 rears; The first semi-transparent semi-reflecting lens 6 become
angle with main optical path; Reflecting surface upwards; On its reflected light path, place second completely reflecting mirror 12; Second completely reflecting mirror 12 becomes
angle with main optical path, reflecting surface is downward;
The second semi-transparent semi-reflecting lens 7 become
angle with main optical path; Reflecting surface is downward; On its transmitted light path, place first optical filter 9; First optical filter 9 is vertical with main optical path; On the reflected light path of the second semi-transparent semi-reflecting lens 7, place the 3rd completely reflecting mirror 8; The 3rd completely reflecting mirror 8 becomes
angle with main optical path; Reflecting surface makes progress, and it is vertical with main optical path on the reflected light path of the 3rd completely reflecting mirror 8, to place one second optical filter 10, the second optical filters 10.
As shown in Figure 1, the light beam A that target is sent is passed through window 1, secondary mirror 3, primary mirror 2, is reached lens combination 4, is divided into two-beam behind the incident light splitting piece 5, and wherein folded light beam B is a visible light, and projecting beam C is the infrared light of the long scope of all-wave.Light beam C is through behind the semi-transparent semi-reflecting lens 6; Be divided into two bundle infrared light D and the E that light intensity equates; Transmitted light beam E is divided into two bundle infrared light F and the G that light intensity equates once more through behind the semi-transparent semi-reflecting lens 7, and light beam G becomes monochromatic infrared light I after through first optical filter; Light beam F becomes monochromatic infrared light H behind completely reflecting mirror 8, second optical filter 10.So just, four bundle light have been obtained: the infrared light D of visible light B, the long scope of all-wave, two intrafascicular cardiac waves long different monochromatic infrared light H, I.
For example visible light of the present invention and infrared light beam splitting system are used for the measurement of flame temperature field.This beam splitting system can be divided into a branch of light that measured target sends four bundle light, and wherein a branch of is visible light, and three beams is an infrared light in addition: a branch of is full wave infrared light and the different monochromatic light of two bundle wavelength.Visible light is used for the visual observation of flame, and full wave infrared light is used for infrared imaging, can realize the real time fusion of the visible and infrared light image of flame temperature field simultaneously; After being received by detector, the different monochromatic light of two bundle wavelength can utilize the color comparison temperature measurement technology to measure the change of temperature field of flame in real time.Utilize flame temperature field supervising device of the present invention; Can realize reasonable adjustment and control to combustion process; Can realize the real-time measurement of combustion zone multiparameter and the synchronous demonstration of combustion zone background and flame have significantly been improved the flame temperature field value of monitoring.
Claims (3)
1. visible light and infrared light beam splitting system, it is characterized in that: this beam splitting system comprises window, primary mirror, secondary mirror, lens combination, light splitting piece, two semi-transparent semi-reflecting lens, three completely reflecting mirrors and two optical filters; The light channel structure of said beam splitting system is:
On main optical path, place window, secondary mirror, primary mirror and lens combination successively, secondary mirror is between window and primary mirror, and wherein primary mirror and secondary mirror are catoptron;
Light splitting piece is placed at rear in lens combination; Light splitting piece becomes
angle with main optical path; Reflecting surface upwards; On the reflected light path of light splitting piece, place first completely reflecting mirror; First completely reflecting mirror becomes
angle with light path, reflecting surface is downward;
On the light path at light splitting piece rear, place the first semi-transparent semi-reflecting lens and the second semi-transparent semi-reflecting lens successively; The first semi-transparent semi-reflecting lens become
angle with main optical path; Reflecting surface upwards; On the reflected light path of the first semi-transparent semi-reflecting lens, place second completely reflecting mirror; Second completely reflecting mirror becomes
angle with light path, reflecting surface is downward;
The second semi-transparent semi-reflecting lens become
angle with main optical path; Reflecting surface is downward; On the transmitted light path of the second semi-transparent semi-reflecting lens, place first optical filter; First optical filter is vertical with light path; On the reflected light path of the second semi-transparent semi-reflecting lens, place the 3rd completely reflecting mirror; The 3rd completely reflecting mirror becomes
angle with light path; Reflecting surface is upwards placed one second optical filter on the reflected light path of the 3rd completely reflecting mirror, second optical filter is vertical with light path;
A branch of light that measured target sends is divided into four bundle light after this beam splitting system, a branch of light is visible light, can directly carry out visual observation after being received by detector; Other three-beams are infrared light, and wherein a branch of light is full wave infrared light, can be used for the measurement of infrared thermal imaging and temperature, and other two-beams are the different monochromatic infrared light of wavelength, can be used for color comparison temperature measurement.
2. visible light according to claim 1 and infrared light beam splitting system is characterized in that: described secondary mirror can move front and back on light path, makes this beam splitting system have the focusing function.
3. visible light according to claim 1 and 2 and infrared light beam splitting system is characterized in that: the centre wavelength of the permeable light wave of described first optical filter is λ
1, the centre wavelength of the permeable light wave of second optical filter is λ
2, λ wherein
1≠ λ
2, can change according to the measurement needs.
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| CN2011103596198A CN102495473A (en) | 2011-11-15 | 2011-11-15 | Visible light and infrared light splitting system |
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|---|---|---|---|
| CN2011103596198A CN102495473A (en) | 2011-11-15 | 2011-11-15 | Visible light and infrared light splitting system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852889A (en) * | 2014-03-21 | 2014-06-11 | 哈尔滨工业大学 | Onboard nacelle optical system for overhead operation |
| CN104159084A (en) * | 2014-08-21 | 2014-11-19 | 中南林业科技大学 | Monitoring method based on novel monitoring lens and dual image sensors |
| CN104159085A (en) * | 2014-08-21 | 2014-11-19 | 中南林业科技大学 | Monitoring system based on novel monitoring lens and two image sensors |
| CN104568140A (en) * | 2014-12-23 | 2015-04-29 | 长春理工大学 | Haze-penetrating imaging system based on multi-spectrum and full-polarization |
| CN105043552A (en) * | 2015-04-24 | 2015-11-11 | 中国科学院西安光学精密机械研究所 | Display and calibration method for chromometry-based temperature measurement system |
| CN105784121A (en) * | 2016-04-01 | 2016-07-20 | 华北电力大学 | Nine-channel adaptive large-range two-dimensional temperature field measuring device and measuring method thereof |
| CN105890776A (en) * | 2016-06-02 | 2016-08-24 | 中国工程物理研究院流体物理研究所 | Light splitting and coupling device |
| CN105910712A (en) * | 2016-04-01 | 2016-08-31 | 华北电力大学 | Five-channel adaptive two-dimensional temperature field measurer and measurement method thereof |
| CN105987405A (en) * | 2015-02-12 | 2016-10-05 | 上海磐颖实业有限公司 | Active control system for energy conservation of gas stove |
| CN106323468A (en) * | 2016-10-18 | 2017-01-11 | 天津市协力自动化工程有限公司 | Image type flame detector |
| RU2615162C1 (en) * | 2015-10-06 | 2017-04-04 | Открытое Акционерное общество "Ростовский оптико-механический завод" | Four-mirror-lens optical system |
| RU2617173C2 (en) * | 2015-10-06 | 2017-04-21 | Открытое Акционерное общество "Ростовский оптико-механический завод" | Three-channel mirror-lens optical system |
| CN109709345A (en) * | 2018-12-29 | 2019-05-03 | 迪瑞医疗科技股份有限公司 | One kind two is to beam splitting type blood coagulation test device |
| CN111458033A (en) * | 2020-04-30 | 2020-07-28 | 中国科学院金属研究所 | Dual-wavelength temperature measuring device and method for steel-making furnace |
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Cited By (18)
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| CN103852889A (en) * | 2014-03-21 | 2014-06-11 | 哈尔滨工业大学 | Onboard nacelle optical system for overhead operation |
| CN104159084A (en) * | 2014-08-21 | 2014-11-19 | 中南林业科技大学 | Monitoring method based on novel monitoring lens and dual image sensors |
| CN104159085A (en) * | 2014-08-21 | 2014-11-19 | 中南林业科技大学 | Monitoring system based on novel monitoring lens and two image sensors |
| CN104568140A (en) * | 2014-12-23 | 2015-04-29 | 长春理工大学 | Haze-penetrating imaging system based on multi-spectrum and full-polarization |
| CN104568140B (en) * | 2014-12-23 | 2016-05-11 | 长春理工大学 | Penetrating Fog haze imaging system based on multispectral section of full polarization |
| CN105987405A (en) * | 2015-02-12 | 2016-10-05 | 上海磐颖实业有限公司 | Active control system for energy conservation of gas stove |
| CN105043552A (en) * | 2015-04-24 | 2015-11-11 | 中国科学院西安光学精密机械研究所 | Display and calibration method for chromometry-based temperature measurement system |
| CN105043552B (en) * | 2015-04-24 | 2018-03-02 | 中国科学院西安光学精密机械研究所 | Colorimetric temperature measurement system is shown and scaling method |
| RU2617173C2 (en) * | 2015-10-06 | 2017-04-21 | Открытое Акционерное общество "Ростовский оптико-механический завод" | Three-channel mirror-lens optical system |
| RU2615162C1 (en) * | 2015-10-06 | 2017-04-04 | Открытое Акционерное общество "Ростовский оптико-механический завод" | Four-mirror-lens optical system |
| CN105910712A (en) * | 2016-04-01 | 2016-08-31 | 华北电力大学 | Five-channel adaptive two-dimensional temperature field measurer and measurement method thereof |
| CN105784121A (en) * | 2016-04-01 | 2016-07-20 | 华北电力大学 | Nine-channel adaptive large-range two-dimensional temperature field measuring device and measuring method thereof |
| CN105784121B (en) * | 2016-04-01 | 2018-10-26 | 华北电力大学 | The a wide range of two-dimension temperature field measurement device of nine channel adaptives and its measurement method |
| CN105910712B (en) * | 2016-04-01 | 2018-10-26 | 华北电力大学 | Five-channel self-adaption two-dimensional temperature field measuring apparatus and its measurement method |
| CN105890776A (en) * | 2016-06-02 | 2016-08-24 | 中国工程物理研究院流体物理研究所 | Light splitting and coupling device |
| CN106323468A (en) * | 2016-10-18 | 2017-01-11 | 天津市协力自动化工程有限公司 | Image type flame detector |
| CN109709345A (en) * | 2018-12-29 | 2019-05-03 | 迪瑞医疗科技股份有限公司 | One kind two is to beam splitting type blood coagulation test device |
| CN111458033A (en) * | 2020-04-30 | 2020-07-28 | 中国科学院金属研究所 | Dual-wavelength temperature measuring device and method for steel-making furnace |
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Application publication date: 20120613 |