CN103335816A - Optical turbulence sensor and method for combining multi-aperture glitter and differential image motion - Google Patents
Optical turbulence sensor and method for combining multi-aperture glitter and differential image motion Download PDFInfo
- Publication number
- CN103335816A CN103335816A CN2013102701942A CN201310270194A CN103335816A CN 103335816 A CN103335816 A CN 103335816A CN 2013102701942 A CN2013102701942 A CN 2013102701942A CN 201310270194 A CN201310270194 A CN 201310270194A CN 103335816 A CN103335816 A CN 103335816A
- Authority
- CN
- China
- Prior art keywords
- lens
- febry
- emergent pupil
- mirror element
- cut apart
- 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
Images
Abstract
The invention discloses an optical turbulence sensor and a method for combining multi-aperture glitter and differential image motion. The optical turbulence sensor consists of a Febry lens, an exit pupil splitting mirror component, a CCD (charge coupled device) image sensor and a computer, and is characterized in that the Febry lens is used for matching an entrance pupil of a small telescope, so that the exit pupil is positioned on the exit pupil splitting mirror component; a combination focus of the Febry lens and the small telescope is positioned at a field diaphragm; an openable reflecting mirror, the field diaphragm with a through hole at the center, and the exit pupil splitting mirror component U1 are sequentially mounted on the same optical axis behind the Febry lens; a grid partitioning board and a field eye lens are arranged on a reflecting optical axis of the openable reflecting mirror; a folding mirror and the CCD image sensor are sequentially arranged on a reflected light path of the exit pupil splitting mirror component; the output end of the CCD image sensor is connected with the computer. Field installation and field adjustment of a system are facilitated; optical and mechanical structures are greatly simplified; influence from external vibration is avoided, so that the field installation and the field adjustment are facilitated and the reliability is greatly improved.
Description
Technical field
The present invention relates to the atmospheric optics field, be specifically related to a kind ofly make up that multiple aperture glitters and the astronomical optics turbulent flow sensor of difference image moving, is a kind of astronomical optics turbulent parameters measured sensor of carrying out.The present invention also provides the measuring method of this astronomical optics turbulent flow sensor.
Background technology
When light wave transmitted in turbulent atmosphere, light wave parameter (intensity, phase place and the direction of propagation etc.) was because turbulent perturbation rises and falls, and this fluctuating has caused the fuzzy of the drift of light beam and expansion, image.The existence of atmospheric turbulence directly influences high-resolution imaging, has limited astronomical photometry precision and telescope actual corners resolution, considerable photometry spectral limit etc.So to heavy caliber ground optical telescope, select its optical table location parameter of outstanding astronomical observatory location and long term monitoring most important.
Atmospheric coherence length, etc. astronomical optics platform location parameters such as dizzy angle, turbulence intensity profile, be the indispensable important parameter of astronomical observatory's addressing and astronomical sight, also be the important parameter in the adaptive optics.
Wherein atmospheric coherence length has characterized the atmosphere coherence on certain horizontal spacing in a certain specific light path, also characterize omnidistance atmospheric turbulence intensity, be atmospheric seeing, it is influential to the number of ADAPTIVE OPTICS SYSTEMS deformable mirror actuator, Wavefront sensor aperture number, laser guiding power, sky coverage rate etc.
Characterized the angle-dependence that arrives the light wave wavefront of observation station by atmospheric turbulence etc. dizzy angle, arrived angle between the two-beam of different directions of system and dizzy angle such as surpass, its correlativity will reduce rapidly.Directly influence ADAPTIVE OPTICS SYSTEMS correction visual field etc. dizzy angle.
Seeing and etc. dizzy angle be description to omnidistance atmosphere, and the turbulence intensity profile be turbulence intensity with the distribution of height, reflected the details of atmospheric turbulence.It directly influences MCAO(Multi-Conjugate Adaptive Optics) in atmosphere chromatography reconstruct number, distorting lens number and conjugation height and GLAO(Ground Layer Adaptive Optics) efficient etc.
The difference image moving monitor of widespread use is at present monitored atmospheric seeing in real time by the relative motion of adding up single astrology two small-bore imagings on pupil plane.It is simple in structure, is widely used in station seeing and measures, and China is in Yunnan Observatory and the prosperous research station of Nation Astronomical Observatory, and the operation of difference image moving monitor had been located in western astronomical addressing etc.Its a kind of structure is: place sub-aperture (50-100mm) template that two little angle of wedge wedge mirrors are installed at opera glass (about bore 250-350mm) entrance pupil, make the wavetilt that arrives two sub-apertures, produce the not overlapping double image of same target star, ccd image sensor statistics star picture element heart difference variance, thus seeing calculated.
Based on etc. the relation of dizzy angle and turbulent flow, and glitter and the relation of turbulent flow, the method for most convenient is to utilize the fixed star light intensity dizzy angles such as rate calculating of glittering.So dizzy angles such as normalized light intensity fluctuation variance measurement by the annular aperture reception on the statistics telescope entrance pupil.Based on atmospheric seeing and etc. the measuring method at dizzy angle, simultaneously existing or by changing the instrument of these two parameters of pupil template approximate measure.
The measurement means of turbulence intensity profile mainly contains methods such as sounding balloon, wind profile radar inverting and acoustic radar measurement, but they have deficiency separately, be as data that non-light-wave band is directly measured, measuring accuracy is not high, measuring distance is limited, need the supporting measurement of other parameters, limited target zone and the precision measured.And the multiple aperture that adopts light-wave band glitters that the sensor utilization is glittered and the turbulent flow relation can measure the free atmosphere seeing, etc. astronomical optics platform location parameters such as dizzy angle and approximate turbulence intensity profile.
The combination multiple aperture of measuring at light-wave band by the CTIO development and design glitters and the difference image moving sensor, can measure simultaneously whole atmosphere seeing, free atmosphere seeing, etc. a plurality of astronomical optics platforms location parameter such as dizzy angle and approximate turbulence intensity profile, has real-time superiority
Successfully be configured to Cerro Tololo, Mauna Kea, Cerro Paranal, 30 meters telescope addressing points, South Pole Dome C etc. carry out the platform location and measure.
China does not have still that successful Application combination multiple aperture glitters and the difference image moving sensor is measured, and lacks the research to its gordian technique yet.But the combination multiple aperture glitters and there is the difficulty of processing height in the difference image moving sensor, debug problems such as difficulty, such as: the difficulty of processing that pupil is cut apart mirror (PSU) is big, its size is little, comprise a circular aperture and three homocentric annular apertures, three rings of ecto-entad are of a size of: overall diameter 5.5mm interior diameter 3.9mm, overall diameter 3.85mm interior diameter 2.2mm and overall diameter 2.15mm interior diameter 1.3mm, center diameter of a circle 1.27mm.Each sub-aperture is with respect to 8 ° at the angle of inclination of PSU main shaft, and the anglec of rotation in adjacent sub-aperture is 30 °, and the minute surface of PSU is concave surface, radius-of-curvature 250mm.The PSU material is copper, is processed as optical surface through polishing, chromium plating successively on copper, aluminium mirror coating and SiO diaphragm.Under the PSU processed complex situation many with needing PSU quantity, CTIO proposes the high-quality PSU that processes is copied, and the pupil that obtains organic glass is cut apart mirror.Make up in addition that multiple aperture glitters and the laboratory optics of difference image moving sensor is debug complexity, the accuracy requirement height, such as: 4 imaging mirrors that the inclination of PSU, pupil are cut apart the mirror correspondence along the rotation of both direction have nothing in common with each other, the rotation of two sub-mirrors of DIMM passage and corresponding deviation mirror thereof etc.
Therefore, need a kind of new astronomical optics turbulent flow measuring instrument at present, it is fully simplified the combination multiple aperture and glitters and the difference image moving sensor construction, satisfies the scene simultaneously and debugs conveniently, reliably and with long-term.And this measuring instrument does not appear in the prior art as yet.
Summary of the invention
Purpose of the present invention: provide a kind of and make up that multiple aperture glitters and astronomical optics turbulent flow sensor and the measuring method thereof of difference image moving, this be a kind of can measure simultaneously whole atmosphere seeing, free atmosphere seeing, etc. the astronomical optics turbulent flow sensor of dizzy angle and approximate turbulence intensity profile, this sensor has simple in structure, debug conveniently the advantage of good reliability.
Technical scheme of the present invention is as follows: a kind ofly make up that multiple aperture glitters and the astronomical optics turbulent flow sensor of difference image moving, cutting apart mirror element, CCD image sensor and computing machine by Febry lens (Fabry lens), emergent pupil forms, it is characterized in that: described Febry lens are used for the entrance pupil of coupling race glass, make emergent pupil be positioned at emergent pupil and cut apart on the mirror element, the combined focal of these Febry lens and described race glass is positioned at the field stop place; On the same optical axis in the rear of these Febry lens, be equipped with successively: cut apart mirror element U1 but the catoptron of folding (abbreviation catoptron), center have field stop and the emergent pupil of through hole; But on the reflection optical axis of the catoptron of described folding, be provided with grid graticule (abbreviation graticule) and visual field eyepiece (abbreviation eyepiece); Cut apart at emergent pupil on the reflected light path of mirror element, be provided with refrative mirror and ccd image sensor successively; The output of described ccd image sensor connects computing machine.
Described emergent pupil is cut apart mirror element and is made up of two identical catoptrons and multianode microchannel sensitive detection parts of being evenly distributed on the same semicircle;
Photocathode, microchannel plate and concentric ring disc anode battle array are installed in the vacuum chamber of described multianode microchannel sensitive detection parts successively.
To above-mentioned each parts content and be used as following explanation:
After the catoptron bullet closes, from single starlight by race glass and Febry lens imaging on graticule.After catoptron flicked, starlight converged at the central through hole place of field stop by race glass and Febry lens, and unobstructedly by through hole, was projected to emergent pupil and cut apart and be divided into the three beams light wave on the mirror element; The two-beam ripple images in through refrative mirror and is used for the measurement of whole atmosphere seeing on the ccd image sensor; Another Shu Guangbo is directly into being incident upon on the sensitive detection parts of multianode microchannel, be used for glittering measurement, the computing machine utilization is glittered and the relation of turbulent flow directly measure the free atmosphere seeing and etc. dizzy angle, use the inverse problem computational algorithm to recover approximate turbulence intensity profile simultaneously.
In other words, the technical scheme of finishing second invention task of the application is: the combinations thereof multiple aperture glitters and the measuring method of the astronomical optics turbulent flow sensor of difference image moving, it is characterized in that step is as follows:
. earlier the catoptron bullet is closed, from single starlight by race glass and Febry lens imaging on graticule;
⑵. after catoptron flicked, starlight converged at the central through hole place of field stop by race glass and Febry lens, and unobstructedly by through hole, was projected to emergent pupil and cut apart and be divided into the three beams light wave on the mirror element;
⑶. emergent pupil is cut apart the two-beam ripple that is divided on the mirror element in the three beams light wave among the step ⑵, images in through refrative mirror to be used for the measurement of whole atmosphere seeing on the ccd image sensor;
⑷. emergent pupil is cut apart another Shu Guangbo of being divided on the mirror element in the three beams light wave directly into being incident upon on the sensitive detection parts of multianode microchannel among the step ⑵, is used for glittering measurement;
. the computing machine utilization is glittered and the relation of turbulent flow directly measure the free atmosphere seeing and etc. dizzy angle, use the inverse problem computational algorithm to recover approximate turbulence intensity profile simultaneously.
With respect to prior art, the invention has the beneficial effects as follows: grid graticule and visual field eyepiece make things convenient for system for field to debug on (1) structure.(2) multianode microchannel sensitive detection parts are cut apart emergent pupil, have greatly simplified optics and physical construction, and this method is not seen open report so far as yet.(3) multianode microchannel detector is not influenced by extraneous vibration direct detection emergent pupil light intensity in the present technique, has made things convenient for the combination multiple aperture to glitter and has debug with the astronomical optics turbulent flow sensor scene of difference image moving, has greatly improved reliability.
Description of drawings
Fig. 1 is light channel structure figure of the present invention.
Fig. 2-1 and Fig. 2-2 is respectively the structural representation that emergent pupil of the present invention is cut apart mirror element and multianode microchannel sensitive detection parts.
Embodiment
Embodiment 1, the combination multiple aperture glitters and the astronomical optics turbulent flow sensor of difference image moving, referring to Fig. 1 and Fig. 2-1, Fig. 2-2: suppose that the combination multiple aperture glitters and the race glass parameter of the astronomical optics turbulent flow sensor proportioning of difference image moving is: bore is Φ 355.6mm, focal length is 3910mm, 400～700 nanometer broadband imagings, centre wavelength are 550 nanometers.
The Febry lens 1 of focal length 140mm diameter of phi 25mm image in emergent pupil with the entrance pupil of race glass and cut apart on the mirror element U1, the combined focal of Febry lens 1 and race glass is positioned at field stop 5 places simultaneously, the thick 1mm of the diameter of phi 15mm of field stop 5 wherein, the central through hole diameter is Φ 2mm.
The rear of Febry lens 1 is equipped with successively: but the thick 3mm of the wide 15mm of the long 15mm of catoptron 2(of folding, be called for short catoptron), grid graticule 6(overall diameter Φ 22.5mm, the abbreviation graticule), visual field eyepiece 7(1.25 inch, 52 ° of visual fields, Omni 32mm is called for short eyepiece), the center field stop 5, the emergent pupil that have a through hole cut apart mirror element U1, refrative mirror 3, ccd image sensor 4.Wherein but graticule 6 and eyepiece 7 are positioned at the below of the catoptron 2 of folding.
Emergent pupil is cut apart mirror element U1 and is comprised two identical catoptrons 9 and catoptron 10(focal length 272mm, overall diameter Φ 10mm), multianode microchannel sensitive detection parts U1.1 and bearing 8, wherein multianode microchannel sensitive detection parts U1.1 comprises vacuum chamber 11, photocathode 14, microchannel plate 13 and annular concentric anode battle array 12, wherein annular concentric anode battle array 12 comprises the diameter of phi 1.25mm disk anode of the concyclic heart, interior diameter Φ 1.30mm overall diameter Φ 2.15mm ring dish anode, interior diameter Φ 2.20mm overall diameter Φ 3.85mm ring dish anode, interior diameter Φ 3.90mm overall diameter Φ 5.50mm ring dish anode, interior diameter Φ 5.55mm overall diameter Φ 8.00mm ring dish anode.
Catoptron 9 and catoptron 10 that emergent pupil is cut apart on the mirror element U1 are told the two-beam ripple, image on the ccd image sensor 4 through refrative mirror 3, are used for measuring the whole atmosphere seeing; The thick 3mm of the refrative mirror wide 15mm of 3 long 10mm; The model of ccd image sensor 4 is JAI-BM141GE.
The multianode microchannel sensitive detection parts U1.1 that emergent pupil is cut apart on the mirror element U1 tells a branch of light wave, and this light wave is projected on the photocathode 14.Annular concentric anode battle array 12 charge packet of electronics after microchannel plate 13 multiplication on photocathode 14 of collecting realized the measurement of glittering of single star multiple aperture.
At last, after atmosphere comprehensive parameter measuring analysis software calculates, can obtain whole atmosphere seeing, free atmosphere seeing, etc. astronomical optics platform location parameters such as dizzy angle and approximate turbulence intensity profile.
Claims (4)
1. one kind is made up that multiple aperture glitters and the astronomical optics turbulent flow sensor of difference image moving, cutting apart mirror element, CCD image sensor and computing machine by Febry lens, emergent pupil forms, it is characterized in that: described Febry lens are used for the entrance pupil of coupling race glass, make emergent pupil be positioned at emergent pupil and cut apart on the mirror element, the combined focal of these Febry lens and described race glass is positioned at the field stop place; On the same optical axis in the rear of these Febry lens, be equipped with successively: cut apart mirror element U1 but the catoptron of folding, center have field stop and the emergent pupil of through hole; But on the reflection optical axis of the catoptron of described folding, be provided with grid graticule and visual field eyepiece; Cut apart at emergent pupil on the reflected light path of mirror element, be provided with refrative mirror and ccd image sensor successively; The output of described ccd image sensor connects computing machine.
2. combination multiple aperture according to claim 1 glitters and the astronomical optics turbulent flow sensor of difference image moving, it is characterized in that described emergent pupil is cut apart mirror element and is made up of two identical catoptrons and multianode microchannel sensitive detection parts of being evenly distributed on the same semicircle.
3. combination multiple aperture according to claim 1 and 2 glitters and the astronomical optics turbulent flow sensor of difference image moving, it is characterized in that, photocathode, microchannel plate and concentric ring disc anode battle array are installed in the vacuum chamber of described multianode microchannel sensitive detection parts successively.
4. the described combination multiple aperture of claim 1 glitters and the assay method of the astronomical optics turbulent flow sensor of difference image moving, it is characterized in that step is as follows:
. earlier the catoptron bullet is closed, from single starlight by race glass and Febry lens imaging on graticule;
⑵. after catoptron flicked, starlight converged at the central through hole place of field stop by race glass and Febry lens, and unobstructedly by through hole, was projected to emergent pupil and cut apart and be divided into the three beams light wave on the mirror element;
⑶. emergent pupil is cut apart the two-beam ripple that is divided on the mirror element in the three beams light wave among the step ⑵, images in through refrative mirror to be used for the measurement of whole atmosphere seeing on the ccd image sensor;
⑷. emergent pupil is cut apart another Shu Guangbo of being divided on the mirror element in the three beams light wave directly into being incident upon on the sensitive detection parts of multianode microchannel among the step ⑵, is used for glittering measurement;
. the computing machine utilization is glittered and the relation of turbulent flow directly measure the free atmosphere seeing and etc. dizzy angle, use the inverse problem computational algorithm to recover approximate turbulence intensity profile simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310270194.2A CN103335816B (en) | 2013-06-28 | 2013-06-28 | Optical turbulence sensor and method for combining multi-aperture glitter and differential image motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310270194.2A CN103335816B (en) | 2013-06-28 | 2013-06-28 | Optical turbulence sensor and method for combining multi-aperture glitter and differential image motion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103335816A true CN103335816A (en) | 2013-10-02 |
| CN103335816B CN103335816B (en) | 2015-05-20 |
Family
ID=49244024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310270194.2A Expired - Fee Related CN103335816B (en) | 2013-06-28 | 2013-06-28 | Optical turbulence sensor and method for combining multi-aperture glitter and differential image motion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103335816B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458856A (en) * | 2018-01-04 | 2018-08-28 | 中国科学院国家天文台南京天文光学技术研究所 | The detection device and its method of segmentation detection dome seeing based on laser light source |
| CN110634372A (en) * | 2019-09-29 | 2019-12-31 | 中国科学院长春光学精密机械与物理研究所 | Optical system installation and adjustment strategy verification system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4920808A (en) * | 1986-04-24 | 1990-05-01 | Roland Sommer | Device and method for measuring the flow velocity of a free flow in three dimensions |
| US6279393B1 (en) * | 1999-08-24 | 2001-08-28 | Mountain High E&S | System for isotropically measuring fluid movement in three-dimensions |
| CN103048701A (en) * | 2012-12-24 | 2013-04-17 | 中国科学院国家天文台南京天文光学技术研究所 | Atmospheric optical parameter measurer for astronomical site survey |
| CN202975364U (en) * | 2012-12-24 | 2013-06-05 | 中国科学院国家天文台南京天文光学技术研究所 | Atmospheric optical parameter measuring instrument for Antarctic plateau astronomical site selection |
-
2013
- 2013-06-28 CN CN201310270194.2A patent/CN103335816B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4920808A (en) * | 1986-04-24 | 1990-05-01 | Roland Sommer | Device and method for measuring the flow velocity of a free flow in three dimensions |
| US6279393B1 (en) * | 1999-08-24 | 2001-08-28 | Mountain High E&S | System for isotropically measuring fluid movement in three-dimensions |
| CN103048701A (en) * | 2012-12-24 | 2013-04-17 | 中国科学院国家天文台南京天文光学技术研究所 | Atmospheric optical parameter measurer for astronomical site survey |
| CN202975364U (en) * | 2012-12-24 | 2013-06-05 | 中国科学院国家天文台南京天文光学技术研究所 | Atmospheric optical parameter measuring instrument for Antarctic plateau astronomical site selection |
Non-Patent Citations (1)
| Title |
|---|
| 侯金良: "天文选址的主要参数及测量方法", 《天文学进展》, vol. 12, no. 2, 30 June 1994 (1994-06-30), pages 126 - 132 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458856A (en) * | 2018-01-04 | 2018-08-28 | 中国科学院国家天文台南京天文光学技术研究所 | The detection device and its method of segmentation detection dome seeing based on laser light source |
| CN110634372A (en) * | 2019-09-29 | 2019-12-31 | 中国科学院长春光学精密机械与物理研究所 | Optical system installation and adjustment strategy verification system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103335816B (en) | 2015-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108871733B (en) | Near-field detection device of large-caliber optical system and measurement method thereof | |
| WO2016106957A1 (en) | Ultra wide band spectrogram correlation detection device and method | |
| CN106443643B (en) | Optical axis monitoring method and device for high-precision active and passive detection system | |
| CN101738619B (en) | Two-waveband infrared optical system | |
| CN109580177B (en) | Airborne three-optical axis consistency testing assembly, system and testing method | |
| WO2016106953A1 (en) | Infrared spectrogram correlation detection system and method for mobile platform | |
| US8711336B1 (en) | Multipoint photonic doppler velocimetry using optical lens elements | |
| CN105425378B (en) | A kind of virtual aperture complex amplitude splices super-resolution astronomical telescope system | |
| CN102252756B (en) | Front-mounted optical system of satellite-borne differential absorption spectrometer | |
| CN105136293B (en) | A kind of MEMS micromirror micro spectrometer based on transmission grating | |
| CN203773047U (en) | Optical system where laser ranging and aiming shares light path | |
| CN103048701B (en) | Atmospheric optical parameter measurer for astronomical site survey | |
| CN107727368B (en) | Device and method for calibrating focal plane position of collimator | |
| Saha | Modern optical astronomy: technology and impact of interferometry | |
| CN103308282A (en) | Efficient measuring system and method for transmittance of reflecting telescoping system | |
| JP2019533811A (en) | Monolithic assembly of a reflective spatial heterodyne spectrometer | |
| Zampieri et al. | Intensity interferometry with Aqueye+ and Iqueye in Asiago | |
| CN103335816B (en) | Optical turbulence sensor and method for combining multi-aperture glitter and differential image motion | |
| CN103308161A (en) | Space remote sensing large-relative-hole-diameter wide-field high-resolution imaging spectrometer optical system | |
| US9885613B1 (en) | Hybrid catadioptric system for advanced optical cavity velocimetry | |
| CN106352985B (en) | A kind of asymmetric space heterodyne spectrograph structure | |
| CN103852163A (en) | Miniature beam splitting system suitable for miniature imaging spectrometer | |
| CN112730298B (en) | Small reflective off-axis telemetering calibration system for FTIR front end | |
| Li et al. | Design of three-dimensional imaging lidar optical system for large field of view scanning | |
| CN202975364U (en) | Atmospheric optical parameter measuring instrument for Antarctic plateau astronomical site selection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20170628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |