CN102607692A - Excited amplitude consistency detection system and detection method for super-large size optical platform - Google Patents
Excited amplitude consistency detection system and detection method for super-large size optical platform Download PDFInfo
- Publication number
- CN102607692A CN102607692A CN2012100832206A CN201210083220A CN102607692A CN 102607692 A CN102607692 A CN 102607692A CN 2012100832206 A CN2012100832206 A CN 2012100832206A CN 201210083220 A CN201210083220 A CN 201210083220A CN 102607692 A CN102607692 A CN 102607692A
- Authority
- CN
- China
- Prior art keywords
- tank
- catoptron
- optical table
- center line
- reflected light
- 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
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to an excited amplitude consistency detection system for a super-large size optical platform. A laser is arranged on a holder on the left end of the central line of the optical platform, a CCD (Charge Coupled Device) camera which is connected with a computer through a wire is arranged on the laser, a front water tank and a rear water tank are symmetrically arranged at both sides of the central line of the optical platform, a beam splitter is arranged on the light-emerging direction at the right side of the laser on the holder, a split beam reflector is arranged on the transmitted light direction of the beam splitter, a left front reflector is arranged on the optical platform in the reflected light direction of the beam splitter, a left rear reflector which is symmetric to the left front reflector is arranged on the optical platform in the reflected light direction of the split beam reflector, diaphragms are arranged on the upper ends of the central lines of the left sidewalls of the front water tank and the rear water tank, a right front reflector is arranged on the optical platform in the reflected light direction of the water surface in the front water tank, a right rear reflector is arranged on the optical platform in the reflected light direction of the water surface in the rear water tank, the right rear reflector and the right front reflector are symmetric to each other according to the central line of the optical platform, and a display screen is arranged on the right end of the central line of the optical platform in the reflected light directions of the right front reflector and the right rear reflector.
Description
Technical field
The invention belongs to field of optical measuring technologies, be specifically related to a kind of super large yardstick optical table and be excited the amplitude uniformity pick-up unit.
Background technology
Improving constantly of experimental apparatus and production and processing precision, also increasingly high to the requirement of working environment, optical table provides one of basic facility of this condition.The demand of super large yardstick optical table is increasingly extensive with use in recent years; But because its size super large; In transportation and installation process deformation taking place very easily, particularly in use owing to the reasons such as uneven subsidence of ground, makes super large yardstick optical table different parts unbalance stress; Thereby changed the consistance of table vibration performance, produced appreciable impact for the stability of scientific experiment and production technology.
Regularly detection optical platform table top apart from the consistance of the equal position of vibration source amplitude, is effective ways of understanding the vibration of optical table consistency of performance under the excitation of same vibration.The vibration performance of present detection optical platform; The general vibration spectrum analyzer that adopts carries out multimetering; But this instrument cost height, complicated operation and common laboratory and production unit do not have; Therefore study a kind of measurement mechanism of simple in structure, easy to operate, intuitive display, realize that the conforming detection of super large yardstick vibration of optical table characteristic is had the important techniques economic implications.
Summary of the invention
A technical matters to be solved by this invention is to overcome the deficiency that above-mentioned vibration spectrum analyzer is used for detection optical platform vibration characteristics, provide a kind of simple in structure, easy to operate, production cost is low, the super large yardstick optical table of intuitive measurement results is excited the amplitude uniformity pick-up unit.
Another technical matters to be solved by this invention is to provide a kind of super large yardstick optical table that uses to be excited the detection method of amplitude uniformity pick-up unit.
Solving the problems of the technologies described above the technical scheme that is adopted is: the support of optical table center line left end is provided with laser instrument; Laser instrument is provided with the CCD camera that links to each other with computing machine through lead; Tank and back tank before being provided with to symmetria bilateralis before and after the optical table center line; The right side of laser instrument is provided with beam splitter along the light exit direction of optical table center line on the support; The transmitted light direction of beam splitter is provided with the branch beam steering mirror on the support; The reflected light direction optical table of beam splitter is provided with left front catoptron; Divide the reflected light direction optical table of beam steering mirror be provided with left front catoptron be the left back catoptron of symmetry with the optical table center line, the reflected light direction of the left front catoptron in left side wall center line upper end of preceding tank is provided with diaphragm, the reflected light direction of left back catoptron is provided with diaphragm on the left side wall center line of back tank; On the water-reflected light direction optical table right front catoptron is set in the preceding tank; On the water-reflected light direction optical table right back catoptron is set in the back tank, right back catoptron and right front catoptron are symmetry with the optical table center line, and the optical table center line right-hand member of the reflected light direction of right front catoptron and right back catoptron is provided with display screen.
Tank is two identical rectangle tanks of structure with the back tank before of the present invention.
The interior height of water level of tank and back tank is identical before of the present invention.
Above-mentioned super large yardstick optical table is excited the detection method of amplitude uniformity pick-up unit and is made up of following step:
1, in preceding tank, back tank, inject distilled water respectively, preceding tank is identical with the water level height of distilled water in the tank of back.
2, adjust angle to the left front catoptron of left front catoptron and left back catoptron and the folded light beam of left back catoptron respectively and pass through diaphragm; Respectively with the parallel sidewalls of preceding tank, back tank and optical table length direction; The incident angle of the tank diagonal line intersected before the incidence point of reflection lasering beam on the preceding tank water surface of left front catoptron was positioned at center, reflection lasering beam and the preceding tank water surface is 88.5 °, the incidence point of reflection lasering beam on the tank water surface of back of left back catoptron is positioned at before the crossing center of tank diagonal line, reflection lasering beam and afterwards the incident angle of the tank water surface be 88.5 °.
3, on the center line of preceding tank and tank right side, back optical table; Use the weight of quality as the band cone Rubber end of 350g; Freely fallen by the 5cm eminence and to click table top, the vibration of preceding tank and back bottom of gullet optical table forms water surface ripple on the surface of preceding tank and back water trough inner water, and water surface ripple produces the modulation reflection to incoming laser beam; Through the modulation of preceding tank water ground roll reflex to right front catoptron, by right front mirror reflects to display screen; On display screen, demonstrate interference fringe, through after tank water ground roll modulation reflex to right back catoptron, by right back mirror reflects to display screen, on display screen, demonstrate interference fringe.
With the interference fringe on the CCD camera continuous acquisition display screen; And convert digital signal to and output to computing machine; Select in the two row interference fringes of continuous acquisition striped most number one row interference fringe separately; And the interference fringe counting number to selecting respectively, be calculated as follows optical table the go forward tank and the back excited vibration amplitude of tank present position:
A
0＝0.944(N-1)-7.5
A in the formula
0Be optical table go forward tank or tank present position, back excited vibration amplitude, unit is μ m; N is that the surface wave of preceding tank or back water trough inner water produces modulation reflection, the number of a row interference fringe of the striped most number that on display screen, appears to incoming laser beam.The excited vibration amplitude of tank and tank present position, back optical table, the relatively size of excited vibration amplitude before detecting; Tank and the position of back tank before changing in optical table center line both sides; Super large yardstick optical table table top center line both sides different symmetric position excited vibration amplitude uniformity is detected; The difference of more different symmetric position excited vibration amplitude sizes judges whether the excited vibration amplitude is consistent.
The present invention be employed in the optical table center line the front and back symmetria bilateralis preceding tank, back tank, left front catoptron, left back catoptron, right front catoptron, right back catoptron be set; Can move in both sides, the front and back left-right symmetric of the center line of optical table through preceding tank, back tank, left front catoptron, left back catoptron, right front catoptron, right back catoptron, realize the different antimeres in optical table table top center line both sides are excited the detection of amplitude uniformity.Reasonable in design, simple in structure, easy to operate, advantages such as production cost is low, intuitive measurement results that apparatus of the present invention have.The inventive method adopts laser beam incident to the surface wave of the upper surface formation of vibration water in tank of optical table table top, to reflex on the display screen again, demonstrates interference fringe on the display screen.The interference fringe of CCD camera continuous acquisition also is input to computing machine, by the program of computing machine according to prior setting, calculates the number of interference fringe, and the different antimeres in definite optical table table top center line both sides are excited amplitude uniformity.
Description of drawings
Fig. 1 is that one of the present invention is the structural representation of embodiment.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the formed interference fringe photo of preceding tank 9 water surface ripples modulation reflection lasering beam of embodiment 1.
Fig. 4 is the formed interference fringe photo of back tank 14 water surface ripples modulation reflection lasering beam of embodiment 1.
Embodiment
To further explain of the present invention, but the invention is not restricted to these embodiment below in conjunction with accompanying drawing and each embodiment.
In Fig. 1, the super large yardstick optical table of present embodiment be excited the amplitude uniformity pick-up unit by computing machine 1, support 2, CCD camera 3, laser instrument 4, beam splitter 5, divide beam steering mirror 6, left front catoptron 7, diaphragm 8, preceding tank 9, right front catoptron 10, display screen 11, left back catoptron 13, back tank 14, right back catoptron 15 to constitute.
Support 2 is fixed on optical table 12 center line left ends; On support 2, be fixedly connected laser instrument 4 is installed with the screw threads for fastening connector; Laser instrument 4 emergent lights are positioned at optical table 12 central planes; The wavelength of laser instrument 4 is 632.8nm, and being fixedly connected with the screw threads for fastening connector on the laser instrument 4 is equipped with CCD camera 3, and CCD camera 3 links to each other with computing machine 1 through lead; The right side of laser instrument 4 is fixedly connected with the screw threads for fastening connector along the light exit direction of optical table centerline direction beam splitter 5 is installed on the support 2; The transmitted light direction of beam splitter 5 is fixedly connected with the screw threads for fastening connector branch beam steering mirror 6 is installed, beam splitter 5 and the adjustable angle of dividing beam steering mirror 6, and it is the ejaculation of 632.8nm laser that the laser beam that is penetrated by laser instrument 4 is divided into two bundle wavelength behind the beam splitter 5.The optical table 12 of the reflected light direction of beam splitter 5 is provided with left front catoptron 7, divides the optical table 12 of the reflected light direction of beam steering mirror 6 to be provided with left back catoptron 13 on the support 2; The position and the optical table center line of left front catoptron 7 and left back catoptron 13 are symmetrical; And can be in both sides move left and right before and after the optical table center line; Left front catoptron 7 is used to reflect the reflected light of beam splitter 5; Left back catoptron 13 is used to reflect the light of branch beam steering mirror 6 reflections, and left front catoptron 7 can rotate the catoptrical direction of adjustment with left back catoptron 13.The optical table 12 of the light reflection direction of left front catoptron 7 is provided with preceding tank 9; The optical table 12 of the light reflection direction of left back catoptron 13 is provided with back tank 14; Before tank 9 be a rectangle tank with back tank 14, the length of preceding tank 9 and back tank 14 * wide is 30 * 20cm
2Preceding tank 9 is identical with the length direction of optical table 12 with the length direction of back tank 14; Before tank 9 and back tank 14 symmetrical and can be with the optical table center line in both sides move left and right before and after the optical table center line; In preceding tank 9 and the back tank 14 water is housed, preceding tank 9 is 60mm with back tank 14 interior water surface elevations.Before be fixedly connected with the screw threads for fastening connector on the reflected light direction of the left front catoptron 7 in left side wall center line upper end of tank 91 diaphragm 8 be installed; Be fixedly connected with the screw threads for fastening connector on the reflected light direction of the left back catoptron 13 in the left side wall center line of back tank 14 upper end 1 diaphragm 8 is installed, the aperture of diaphragm 8 is 2.3mm.On the water-reflected light direction optical table 12 right front catoptron 10 is set in the preceding tank 9; Right back catoptron 15 is set on the water-reflected light direction optical table 12 in the back tank 14; Right front catoptron 10 and right back catoptron 15 positions are with the optical table center line is symmetrical and can be in both sides move left and right before and after the optical table center line, and right front catoptron 10 can rotate with right back catoptron 15 and adjust catoptrical direction.The reflected light of right front catoptron 10 and right back catoptron 15 reflexes on the display screen 11 that is arranged on optical table center line right-hand member.
Adopting above-mentioned super large yardstick optical table to be excited the amplitude uniformity pick-up unit detects 7TBP60-15 type optical table (6000 * 1500 * 800) to be excited the method for amplitude uniformity following:
1, in preceding tank 9, back tank 14, inject distilled water respectively, the height of water level of distilled water is 60mm in preceding tank 9 and the back tank 14.
2, adjust angle to the left front catoptron 7 of left front catoptron 7 and left back catoptron 13 and the reflected light of left back catoptron 13 respectively and pass through diaphragm 8; Respectively with the parallel sidewalls of preceding tank 9, back tank 14 length directions; The incident angle of tank 9 diagonal line intersected before the incidence point of reflection lasering beam on preceding tank 9 waters surface of left front catoptron 7 was positioned at center, reflection lasering beam and preceding tank 9 waters surface is 88.5 °, the reflection lasering beam that makes left back catoptron 13 the incidence point on tank 14 waters surface of back be positioned at the crossing center of back tank 14 diagonal line, reflection lasering beam and after the incident angle of tank 14 waters surface be 88.5 °.
3, on the center line of preceding tank 9 and back tank 14 right side optical tables 12; Use the weight of quality as the band cone Rubber end of 350g; Freely fallen by the 5cm eminence and to click table top, the vibration of bottom of gullet optical table forms water surface ripple on the water surface in preceding tank 9 and the back tank 14, and water surface ripple produces modulation to incoming laser beam and reflects; Reflex to right front catoptron 10, reflex on the display screen 11 through the modulation of preceding tank 9 water surface ripples by right front catoptron 10; On display screen 11, demonstrate interference fringe, through after tank 14 water surface ripples modulation reflex to right back catoptron 15, reflex on the display screen 11 by right back catoptron 15, on display screen 11, demonstrate interference fringe.
Press the interference fringe on per second 16 width of cloth continuous acquisition display screens 11 with CCD camera 3; And convert digital signal to and output to computing machine 1, select in the two row interference fringes of continuous acquisition striped most number one row interference fringe separately, and the interference fringe counting number to selecting respectively; Result such as Fig. 3, shown in Figure 4; Fig. 3 is a row interference fringe of the formed striped most number of preceding tank 9 water surface ripples modulation reflection lasering beam, and interference fringe has 12, and Fig. 4 is a row interference fringe of the formed striped most number of back tank 14 water surface ripples modulation reflection lasering beam; Interference fringe has 12, and computing machine 1 is pressed
A
0＝0.944(N-1)-7.5
Tank 9 is 2.88 μ m with the excited vibration amplitude of back tank 14 bottom optical tables 12 before calculating, explain with 7TBP60-15 type optical table (6000 * 1500 * 800) table top center line be symmetry preceding tank 9 with after the excited vibration amplitude of tank 14 present position optical tables 12 consistent.
Claims (4)
1. a super large yardstick optical table is excited the amplitude uniformity pick-up unit; It is characterized in that: the support (2) of optical table center line left end is provided with laser instrument (4); Laser instrument (4) is provided with the CCD camera (3) that links to each other with computing machine (1) through lead; Preceding tank (9) and back tank (14) are set to symmetria bilateralis before and after the optical table center line; The right side of the last laser instrument (4) of support (2) is provided with beam splitter (5) along the light exit direction of optical table center line; The transmitted light direction that support (2) is gone up beam splitter (5) is provided with branch beam steering mirror (6); The reflected light direction optical table (12) of beam splitter (5) is provided with left front catoptron (7); Divide the reflected light direction optical table (12) of beam steering mirror (6) be provided with left front catoptron (7) be the left back catoptron (13) of symmetry with the optical table center line, the reflected light direction of the left side wall center line left front catoptron in upper end (7) of preceding tank (9) is provided with diaphragm (8), the reflected light direction of left back catoptron (13) is provided with diaphragm (8) on the left side wall center line of back tank (14); On preceding tank (9) the interior water-reflected light direction optical table (12) right front catoptron (10) is set; Right back catoptron (15) is set on back tank (14) the interior water-reflected light direction optical table (12), and right back catoptron (15) is symmetry with right front catoptron (10) with the optical table center line, and optical table (12) the center line right-hand member of the reflected light direction of right front catoptron (10) and right back catoptron (15) is provided with display screen (11).
2. be excited the amplitude uniformity pick-up unit according to the described super large yardstick of claim 1 optical table, it is characterized in that: tank (9) is two identical rectangle tanks of structure with back tank (14) before described.
3. be excited the amplitude uniformity pick-up unit according to claim 1 or 2 described super large yardstick optical tables, it is characterized in that: the interior height of water level of tank (9) and back tank (14) is identical before described.
4. one kind is used claim 1 super large yardstick optical table to be excited the detection method of amplitude uniformity pick-up unit, it is characterized in that it is made up of following step:
A, in preceding tank (9), back tank (14), inject distilled water respectively, the water level height of preceding tank (9) and the back interior distilled water of tank (14) is identical;
The folded light beam of B, angle to the left front catoptron (7) of adjusting left front catoptron (7) and left back catoptron (13) respectively and left back catoptron (13) is passed through diaphragm (8); Respectively with preceding tank (9), the back tank (14) and the parallel sidewalls of optical table length direction; The incident angle that makes the incidence point of reflection lasering beam on preceding tank (9) water surface of left front catoptron (7) be positioned at center, reflection lasering beam and preceding tank (9) water surface that preceding tank (9) diagonal line intersects is 88.5 °, make the incidence point of reflection lasering beam on tank (14) water surface of back of left back catoptron (13) be positioned at the crossing center of preceding tank (9) diagonal line, reflection lasering beam and afterwards the incident angle of tank (14) water surface be 88.5 °;
C, preceding tank (9) and the back tank (14) right side optical table (12) center line on; Use the weight of quality as the band cone Rubber end of 350g; Freely fall by the 5cm eminence and to click table top; The surface of vibration water in preceding tank (9) and back tank (14) of preceding tank (9) and back tank (14) bottom optical table forms water surface ripple; Water surface ripple produces the modulation reflection to incoming laser beam, reflexes to right front catoptron (10), is reflexed on the display screen (11) by right front catoptron (10) through the modulation of preceding tank (9) water surface ripple, on display screen (11), demonstrates interference fringe; Through after tank (14) water surface ripple modulation reflex to right back catoptron (15), reflex on the display screen (11) by right back catoptron (15), on display screen (11), demonstrate interference fringe;
With the interference fringe on CCD camera (3) the continuous acquisition display screen (11); And convert digital signal to and output to computing machine (1); Select in the two row interference fringes of continuous acquisition striped most number one row interference fringe separately; And the interference fringe counting number to selecting respectively, be calculated as follows optical table (12) the go forward tank (9) and the back excited vibration amplitude of tank (14) present position:
A
0＝0.944(N-1)-7.5
A in the formula
0Be optical table (12) go forward tank (9) or tank (14) present position, back excited vibration amplitude, unit is μ m; N is that the surface wave of preceding tank (9) or the interior water of back tank (14) produces modulation reflection, the number of a row interference fringe of the striped most number that on display screen (11), appears to incoming laser beam; The excited vibration amplitude of tank (9) and back tank (14) present position optical table (12), the relatively size of excited vibration amplitude before detecting; Tank (9) and back tank (14) are in the position of optical table (12) center line both sides before changing; Super large yardstick optical table (12) table top center line both sides different symmetric position excited vibration amplitude uniformity is detected; The difference of more different symmetric position excited vibration amplitude sizes judges whether the excited vibration amplitude is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210083220.6A CN102607692B (en) | 2012-03-27 | 2012-03-27 | Excited amplitude consistency detection system and detection method for super-large size optical platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210083220.6A CN102607692B (en) | 2012-03-27 | 2012-03-27 | Excited amplitude consistency detection system and detection method for super-large size optical platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102607692A true CN102607692A (en) | 2012-07-25 |
| CN102607692B CN102607692B (en) | 2014-03-05 |
Family
ID=46525275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210083220.6A Expired - Fee Related CN102607692B (en) | 2012-03-27 | 2012-03-27 | Excited amplitude consistency detection system and detection method for super-large size optical platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102607692B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113828867A (en) * | 2021-10-12 | 2021-12-24 | 科益展智能装备有限公司 | Ultrasonic machining apparatus and control method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020189361A1 (en) * | 2001-06-15 | 2002-12-19 | Honeywell International Inc. | Inverse corner cube for non-intrusive three axis vibration measurement |
-
2012
- 2012-03-27 CN CN201210083220.6A patent/CN102607692B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020189361A1 (en) * | 2001-06-15 | 2002-12-19 | Honeywell International Inc. | Inverse corner cube for non-intrusive three axis vibration measurement |
Non-Patent Citations (5)
| Title |
|---|
| 刘香莲等: "低频液体表面波衍射条纹的不对称性", 《激光技术》 * |
| 祁建霞等: "小振幅低频液体表面波的光学干涉效应的研究", 《光学技术》 * |
| 罗道斌等: "液面微幅波动的激光干涉测量", 《光学技术》 * |
| 苗润才等: "低频液体表面波的激光干涉测量", 《中国激光》 * |
| 苗润才等: "液体表面波振幅与激发深度的关系", 《光子学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113828867A (en) * | 2021-10-12 | 2021-12-24 | 科益展智能装备有限公司 | Ultrasonic machining apparatus and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102607692B (en) | 2014-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102607788B (en) | Device and method for detecting vibration isolation performance consistency of oversized optical platform | |
| CN102147234B (en) | Laser triangulation sensor | |
| CN203231737U (en) | Photoelectric auto-collimator | |
| CN105423958A (en) | Multi-optical-axis parallelism detection apparatus and method | |
| CN102735380B (en) | Multi-function electronic speckle interferometer | |
| CN207623515U (en) | A kind of discrete fixed multi-line laser radar of photoelectricity module | |
| CN105486341A (en) | Large-format high-speed high-precision automatic optical detector | |
| CN103267482A (en) | High-accuracy displacement detection device and method | |
| CN102707452A (en) | Double separation wollaston prism high-resolution simultaneous polarization-imaging system | |
| CN102564895B (en) | Liquid density on-line monitoring system based on ultrasonic diffraction grating | |
| CN102679907A (en) | High-precision differential interference measuring system and method based on LED light source | |
| CN102607692B (en) | Excited amplitude consistency detection system and detection method for super-large size optical platform | |
| CN102589701B (en) | Method for expanding application bandwidth of spatial heterodyne interferometer | |
| CN103033272A (en) | Simultaneous phase-shifting lateral shearing interferometer and detection method | |
| CN101086530A (en) | 1.064um laser range finder transmitting antenna debugging method and apparatus | |
| CN113155049A (en) | Light path system and fixation method of monocular three-dimensional image acquisition system | |
| CN201514225U (en) | Light interference fringe reversible counting device with image display function | |
| CN109115129A (en) | A kind of halftone seine angle measurement device and its application method | |
| CN102620906B (en) | Optical table vibration isolation performance acoustooptic modulation detection device and detection method | |
| CN104112978A (en) | Vertical laminated optical path module and multi-die semiconductor laser | |
| CN203310374U (en) | High precision displacement detection device | |
| CN103674220A (en) | Vibration measuring system | |
| CN102607693B (en) | Acousto-optic modulation detection device and detection method for vibration performance of optical table | |
| CN104977084A (en) | Method for improving imaging spatial resolution and spectral resolution of acousto-optic turnable filter (AOTF) | |
| CN103048789A (en) | Optical system producing long-distance light with similar non-diffraction grating type linear structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 710062 Changan South Road, Shaanxi, No. 199, No. Applicant after: Shaanxi Normal University Applicant after: Xi'an Aeronautical University Address before: 710062 Changan South Road, Shaanxi, No. 199, No. Applicant before: Shaanxi Normal University Applicant before: Xi'an Aerotechnical College |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20150327 |
|
| EXPY | Termination of patent right or utility model |