CN101980003A - Open long-path broad-spectrum gas measurement system - Google Patents
Open long-path broad-spectrum gas measurement system Download PDFInfo
- Publication number
- CN101980003A CN101980003A CN201010506002.XA CN201010506002A CN101980003A CN 101980003 A CN101980003 A CN 101980003A CN 201010506002 A CN201010506002 A CN 201010506002A CN 101980003 A CN101980003 A CN 101980003A
- Authority
- CN
- China
- Prior art keywords
- telescope
- measurement system
- spectrum
- open long
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 20
- 239000000835 fiber Substances 0.000 claims abstract description 26
- 238000001228 spectrum Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 239000013307 optical fiber Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 9
- 230000003595 spectral effect Effects 0.000 claims description 5
- 238000004611 spectroscopical analysis Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 25
- 238000000862 absorption spectrum Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 description 10
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
- G01N2021/3155—Measuring in two spectral ranges, e.g. UV and visible
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
- G01N2021/3513—Open path with an instrumental source
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/08—Optical fibres; light guides
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Optics & Photonics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention provides an open long-path broad-spectrum gas measurement system, which solves the problems of narrow measurement spectrum range and a few measurable gas components of the conventional open long-path broad-spectrum gas measurement system. The measurement system comprises a plurality of light sources, a multiple transceiving fiber bundle structure, a telescope and a spectrometer, wherein the light sources can be light sources capable of transmitting continuous spectrums and tunable laser, and are respectively coupled to independent transmission fiber incident ends; and the light is emitted through the public ends of the transmission fibers, is collimated through a spherical mirror in the telescope, is reflected in the original direction after the light reaches a cube-corner retroreflector on the other end of the long path of the telescope, enters the public ends of the transceiving fibers through focusing of the spherical mirror, is emitted through the independent receiving fiber exit ends, and is subjected to spectrum detection by the spectrometer. The system only requires one concave mirror inside the telescope, has a simple structure and high spectrum utilization efficiency, and can complete absorption spectrum measurement of various gases from an ultraviolet waveband to an infrared waveband.
Description
[technical field]:
The present invention relates to a kind of wide spectrum gas measurement system of open long light path, especially measure the monitoring system of trace gas in the air.
[background technology]:
In the gas-monitoring in atmospheric pollution, can respectively different gas employing point type instruments be sampled and analyze, but this method can only be understood the atmospheric pollution situation and the long-run average in the sampling period of sample space, monitoring point, the space-time representativeness is relatively poor, and a point type monitoring instrument generally can only be monitored a kind of gas.The gas absorption spectra measuring technique of utilizing open long light path method with its on a large scale, many components detect, the metering system of real-time online is just becoming environmental pollution monitoring continuously ideal tools.Adopt open long light path technology to monitor several pollutants simultaneously at same spectral absorption wave band, can realize complete noncontact online auto monitoring, the highly sensitive monitoring result of instrument has more representativeness than the single-point monitoring.
Open long light path method monitoring system is because the restriction of measuring method and sensitivity of spectrograph, generally be confined to adopt a kind of method and a spectrometer to measure, so the component of measurement gas is fewer, generally can only measure the gas that has characteristic absorption spectrum in some wavelength band, as monitoring CO, CO simultaneously at infrared band
2, CH
4, in ultraviolet or advance ultraviolet band and monitor O simultaneously
3, SO
2, NO
2, but above all gas generally can not all be monitored simultaneously.
[summary of the invention]:
The objective of the invention is to solve existing open long light path measuring system or point measurement instrument and can not monitor multiple gases composition and concentration and the representative relatively poor problem of point measurement instrument space-time simultaneously, a kind of wide spectrum gas measurement system of open long light path is provided.
The wide spectrum gas measurement system of a kind of open long light path of the wide spectrum of open long light path provided by the invention, comprise multiple light courcess, multi beam transmitting-receiving fiber bundle structure, telescope and spectrometer, this multi beam transmitting-receiving fiber bundle structure comprises at least two group launching fibers and the corresponding reception optical fiber of at least two groups, wherein an end is fixed together becomes transmitting-receiving optical fiber common port, the other end of launching fiber is corresponding with a light source respectively, light source can adopt the light source (as xenon lamp) that can send continuous spectrum respectively simultaneously, tunable laser, the light that light source sends is coupled to independently launching fiber incident end respectively, common port by these launching fibers penetrates, spherical reflector collimation in telescope, atmosphere by one section opening, reflected along former direction behind the prism of corner cube of the arrival telescope light path other end, focus on through spherical reflector once more and enter transmitting-receiving optical fiber common port, after independently receive the optical fiber exit end and penetrate, carry out spectral detection by spectrometer.
This system needs a concave mirror inner of telescope, and is simple in structure, spectrum utilization ratio height, and the multiple gases absorption spectrum that can finish from the ultraviolet to the infrared band is measured.
The intrafascicular transmitting-receiving optical fiber common port of above-mentioned multi beam transmitting-receiving structured optical fiber is positioned on the telescopical optical axis, and the radius of establishing spherical reflector is R, and then receiving and dispatching the optical fiber common port is 1/2R apart from the distance of spherical reflector.
Transmitting-receiving optical fiber common port in the multi beam transmitting-receiving fibre bundle can be installed on the three-dimensional mobile platform and can carry out three-dimensional adjustment.
Advantage of the present invention and good effect:
In the wide spectrum gas measurement system of open long light path provided by the invention, the fibre bundle with public port is adopted in spectrum transmitting-receiving, in the telescope only with a reflecting sphere mirror; Measure when the maximum characteristics of this system are to have realized from ultraviolet to infrared band gas characteristic absorption spectrum, and can realize light that multiple light courcess is sent, after gas absorption, measure simultaneously.Compare with existing typical open long optical distance spectrum absorptiometry system, reduced lens or reflector group, avoided light beam, improved the spectrum utilization ratio the blocking of transmission course midplane mirror; Compare with the point measurement instrument, have more the space-time representativeness.This system only needs carry out three-dimensional adjustment to multi beam transmitting-receiving fibre bundle common port, thereby has simplified instrument adjustment and centering process in adjustment and centering process.
[description of drawings]:
Fig. 1 is the wide spectrum gas measurement system structural representation of a kind of open long light path provided by the invention.
[embodiment]:
Figure 1 shows that the wide spectrum gas measurement system of a kind of open long light path provided by the invention, this system comprises pointolite (xenon lamp) 1, tunable laser source 2 (or light source of other type), telescope and the spectrometer (not drawing among the figure) that can send wide spectral composition.Wherein telescope comprises: spherical reflector 6, and the prism of corner cube 7 of the telescope light path other end.This system also comprises transmitting-receiving integrated fiber bundle structure in addition, (this routine launching fiber is two groups to this fiber bundle structure by launching fiber 10,11, also can be more) and receive optical fiber 12,13 formations, wherein an end is fixed together becomes transmitting-receiving optical fiber common port 5, this common port is positioned on the telescope optic axis, the radius of supposing spherical reflector 6 is R, then multi beam transmitting-receiving optical fiber common port is 1/2R apart from the distance of spherical reflector, and this transmitting-receiving optical fiber common port can be installed in and also can carry out the three-dimensional adjustment on the existing three-dimensional mobile platform.
During detection, by xenon lamp 1, the spectrum that tunable laser source 2 (or other light source) sends at first enters launching fiber 10 respectively after coupling, 11 incident port 3 and 4, the other end by launching fiber, promptly receiving and dispatching optical fiber common port 5 penetrates, spherical reflector 6 collimations in telescope, atmosphere by one section opening, arrive the prism of corner cube 7 of the telescope light path other end, reflected along former direction then, the reflected light that carries dusty gas information in the atmosphere returns along former direction, spherical reflector in telescope 6 focuses on and enters transmitting-receiving optical fiber common port 5 once more, after receive optical fiber 12,13 another port 8, import the pairing spectrometer of each light source after 9 outgoing respectively and carry out spectral detection.But spectrometer obtains the concentration of trace gas in the air according to the characteristic absorption spectrum inverting of gas.
Claims (3)
1. the wide spectrum gas measurement system of an open long light path, comprise multiple light courcess, multi beam transmitting-receiving fiber bundle structure, telescope and spectrometer, this multi beam transmitting-receiving fiber bundle structure comprises at least two group launching fibers and the corresponding reception optical fiber of at least two groups, wherein an end is fixed together becomes transmitting-receiving optical fiber common port, the other end of launching fiber is corresponding with a light source respectively, the light that light source sends is coupled to independently launching fiber incident end respectively, common port by these launching fibers penetrates, spherical reflector collimation in telescope, atmosphere by one section opening, reflected along former direction behind the prism of corner cube of the arrival telescope light path other end, focus on through spherical reflector once more and enter transmitting-receiving optical fiber common port, after independently receive the optical fiber exit end and penetrate, carry out spectral detection by spectrometer.
2. the wide spectrum gas measurement system of open long light path according to claim 1 is characterized in that light source can adopt the light source or the tunable laser that can send continuous spectrum respectively simultaneously.
3. the wide spectrum gas measurement system of open long light path according to claim 1 and 2 is characterized in that adopting many spectrometers, and the gas componant that adopts different spectroscopic analysis methods to finish simultaneously from the ultraviolet to the infrared band detects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010506002.XA CN101980003B (en) | 2010-10-14 | 2010-10-14 | Open long-path broad-spectrum gas measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010506002.XA CN101980003B (en) | 2010-10-14 | 2010-10-14 | Open long-path broad-spectrum gas measurement system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101980003A true CN101980003A (en) | 2011-02-23 |
| CN101980003B CN101980003B (en) | 2012-11-07 |
Family
ID=43600521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010506002.XA Expired - Fee Related CN101980003B (en) | 2010-10-14 | 2010-10-14 | Open long-path broad-spectrum gas measurement system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101980003B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104220863A (en) * | 2012-04-14 | 2014-12-17 | 德雷格安全股份两合公司 | Gas detector system |
| CN105629464A (en) * | 2016-02-18 | 2016-06-01 | 中国科学院国家空间科学中心 | Diffraction-limiting imaging pseudo star source simulation system based on single reflector |
| NO20150765A1 (en) * | 2015-06-11 | 2016-12-12 | Neo Monitors As | Gas monitor |
| CN108132142A (en) * | 2018-01-31 | 2018-06-08 | 中国科学院西安光学精密机械研究所 | Detection device and method for large-caliber reflection optical system |
| CN114112963A (en) * | 2021-11-30 | 2022-03-01 | 青岛崂应海纳光电环保集团有限公司 | Gas telemetering telescope |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994016311A1 (en) * | 1993-01-12 | 1994-07-21 | Pollution Monitoring Systems Ltd. | Gas analyser |
| JP2002228582A (en) * | 2001-01-30 | 2002-08-14 | Anritsu Corp | Gas detection device |
| CN1908623A (en) * | 2005-08-02 | 2007-02-07 | 德菲电气（北京）有限公司 | Multi-component infrared online gas analyzer |
| EP1790969A1 (en) * | 2005-11-23 | 2007-05-30 | Tyco Electronics Raychem GmbH | Gas sensor array with a light channel in the form of a conical section rotational member |
| CN101021474A (en) * | 2006-12-05 | 2007-08-22 | 中国科学院安徽光学精密机械研究所 | Opening gas multi-element monitoring instrument and monitoring method |
| CN101435773A (en) * | 2008-12-02 | 2009-05-20 | 天津大学 | Gas monitoring method and apparatus based on quasi continuous diode laser modulated spectrum |
-
2010
- 2010-10-14 CN CN201010506002.XA patent/CN101980003B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994016311A1 (en) * | 1993-01-12 | 1994-07-21 | Pollution Monitoring Systems Ltd. | Gas analyser |
| JP2002228582A (en) * | 2001-01-30 | 2002-08-14 | Anritsu Corp | Gas detection device |
| CN1908623A (en) * | 2005-08-02 | 2007-02-07 | 德菲电气（北京）有限公司 | Multi-component infrared online gas analyzer |
| EP1790969A1 (en) * | 2005-11-23 | 2007-05-30 | Tyco Electronics Raychem GmbH | Gas sensor array with a light channel in the form of a conical section rotational member |
| CN101021474A (en) * | 2006-12-05 | 2007-08-22 | 中国科学院安徽光学精密机械研究所 | Opening gas multi-element monitoring instrument and monitoring method |
| CN101435773A (en) * | 2008-12-02 | 2009-05-20 | 天津大学 | Gas monitoring method and apparatus based on quasi continuous diode laser modulated spectrum |
Non-Patent Citations (3)
| Title |
|---|
| 《CHINESE OPTICS LETTERS》 20090510 Hikmat H. Asadov ET AL Synthesis of corrected multi-wavelength spectrometers for atmospheric trace gases 361-363 1-3 第7卷, 第5期 2 * |
| 《传感技术学报》 20090930 张学典等 基于DOAS方法烟道污染气体在线监测系统的设计 1963-1966 1-3 第20 卷, 第9 期 2 * |
| 《重庆工学院学报(自然科学版)》 20070331 王帅等 多组分气体检测与识别技术进展 78-81,87 1-3 第21 卷, 第3 期 2 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104220863A (en) * | 2012-04-14 | 2014-12-17 | 德雷格安全股份两合公司 | Gas detector system |
| CN104220863B (en) * | 2012-04-14 | 2017-03-01 | 德雷格安全股份两合公司 | Gas detector system |
| NO20150765A1 (en) * | 2015-06-11 | 2016-12-12 | Neo Monitors As | Gas monitor |
| CN105629464A (en) * | 2016-02-18 | 2016-06-01 | 中国科学院国家空间科学中心 | Diffraction-limiting imaging pseudo star source simulation system based on single reflector |
| CN108132142A (en) * | 2018-01-31 | 2018-06-08 | 中国科学院西安光学精密机械研究所 | Detection device and method for large-caliber reflection optical system |
| CN108132142B (en) * | 2018-01-31 | 2024-04-05 | 中国科学院西安光学精密机械研究所 | Device and method for detecting large-caliber reflection optical system |
| CN114112963A (en) * | 2021-11-30 | 2022-03-01 | 青岛崂应海纳光电环保集团有限公司 | Gas telemetering telescope |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101980003B (en) | 2012-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11397149B2 (en) | Laser radar system apparatus for multi-wavelength measurement of atmospheric carbon dioxide concentration and vertical aerosol profile | |
| CN202083627U (en) | Optical fiber air DOAS measurement system based on Cassegrain telescope structure | |
| US7729566B2 (en) | Method for the monitoring and control of a process | |
| CN102230889A (en) | Air concentration measuring system and method based on super-continuum spectrum light source | |
| CN101980003B (en) | Open long-path broad-spectrum gas measurement system | |
| Merten et al. | Design of differential optical absorption spectroscopy long-path telescopes based on fiber optics | |
| CN102620829A (en) | Fourier transform infrared spectrometer based on programmable MEMS (micro-electro-mechanical system) micromirror and single-point detector | |
| CN103698298A (en) | Device for measuring gas concentration based on short cavity enhanced correlation spectroscopy, and method for measuring gas concentration by adopting device | |
| CN207882443U (en) | A kind of EO-1 hyperion Airborne Lidar examining system | |
| CN100491975C (en) | Portable infrared spectrograph | |
| CN103604773A (en) | Laser beam combiner for simultaneously detecting various types of gas of TDLAS (Tunable Diode Laser Absorption Spectroscopy) | |
| CN110375781B (en) | Adaptive data acquisition system with variable measurement range in OFDR (offset OFDR) | |
| CN104897610B (en) | A kind of more component trace gas concentration measurement apparatus of rotating prism formula | |
| CN102890067A (en) | Methanol gasoline quick detector based on near infrared rays | |
| CN101936885B (en) | Optical fiber transceiver integrated air differential optical absorption spectroscopy (DOAS) measuring system | |
| CN207571026U (en) | A kind of multiple gases telemetry system based on TDLAS | |
| CN202177572U (en) | Spectral measuring system for multi-component gas | |
| CN101634626B (en) | Active-passive integrated atmospheric pollution measuring system and measuring method thereof | |
| CN113295626A (en) | Aerosol extinction spectrum measurement method and device based on array type micro-pulse laser radar | |
| Axelsson et al. | A Transmitting/Receiving Telescope for DOAS-measurements using Retroreflectortechnique. | |
| CN102297841A (en) | Flue gas automatic monitor based on optical fiber transmission and signal receiving | |
| CN103424369A (en) | Pollution-gas differential optical absorption spectroscopy measurement system with optical fiber structure | |
| CN113607687A (en) | Single-ended diffuse reflection multi-component measurement system based on gas absorption spectrum | |
| CN111122499B (en) | Radial plume multi-component gas measurement remote sensing system | |
| CN110736713B (en) | Gas analyzer and gas analyzing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: HEBEI UNIVERSITY OF TECHNOLOGY |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20111114 Address after: 300457, room 409, block A2, Tian Da Science Park, No. fourth, 80 Avenue, Tianjin Development Zone Applicant after: Xianshi Optical Technology Co., Ltd., Tianjin City Co-applicant after: Hebei University of Technology Address before: 300457, room 409, block A2, Tian Da Science Park, No. fourth, 80 Avenue, Tianjin Development Zone Applicant before: Xianshi Optical Technology Co., Ltd., Tianjin City |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: HEBEI UNIVERSITY OF TECHNOLOGY Effective date: 20150216 Owner name: HEBEI UNIVERSITY OF TECHNOLOGY Free format text: FORMER OWNER: XIANSHI OPTICAL TECHNOLOGY CO LTD, TIANJIN CITY Effective date: 20150216 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wei Yongjie Inventor before: Wei Yongjie Inventor before: Chen Wenliang Inventor before: Du Zhenhui Inventor before: Xu Kexin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WEI YONGJIE CHEN WENLIANG DU ZHENHUI XU KEXIN TO: WEI YONGJIE Free format text: CORRECT: ADDRESS; FROM: 300457 HANGU, TIANJIN TO: 300401 BEICHEN, TIANJIN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150216 Address after: 300401 Xiping Road, Beichen District, Tianjin, No. 5340 Patentee after: Hebei University of Technology Address before: 300457, room 409, block A2, Tian Da Science Park, No. fourth, 80 Avenue, Tianjin Development Zone Patentee before: Xianshi Optical Technology Co., Ltd., Tianjin City Patentee before: Hebei University of Technology |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20151014 |
|
| EXPY | Termination of patent right or utility model |