CN114509911A - Coaxial superspeed multi-sequence laser shadow imaging device - Google Patents
Coaxial superspeed multi-sequence laser shadow imaging device Download PDFInfo
- Publication number
- CN114509911A CN114509911A CN202111626236.2A CN202111626236A CN114509911A CN 114509911 A CN114509911 A CN 114509911A CN 202111626236 A CN202111626236 A CN 202111626236A CN 114509911 A CN114509911 A CN 114509911A
- Authority
- CN
- China
- Prior art keywords
- beam splitter
- imaging
- laser
- sequence
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B39/00—High-speed photography
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
Abstract
The invention discloses a coaxial superspeed multi-sequence laser shadow imaging device, which comprises: the device comprises a multi-cavity light source system, an optical fiber coupling system, a parallel light transmission imaging system, an imaging system, a data acquisition system and a control system. The invention adopts a multi-cavity light source to share a light path outlet, laser beams of different sequences share a set of imaging light path to enter the parallel light transmission device and the imaging light splitting device, and can realize the consistency of optical axes and light path structures of different sequence imaging by synchronizing the light sensing time and the laser flash time of the camera, and image the same test area, so that the background quality of imaging light spots can be kept consistent, and the multi-sequence imaging of the ultra-high speed phenomenon is realized.
Description
Technical Field
The invention relates to the technical field of ultrahigh-speed imaging, in particular to a coaxial ultrahigh-speed multi-sequence laser shadow imaging device.
Background
With the development of aerospace technology, weaponry and basic discipline in China, research in the fields of ultrahigh-speed aerodynamics, ultrahigh-speed collision, explosion and impact, combustion, chemical reaction and the like is continuously and deeply conducted. In these research works, many of the phenomena are very fast transient change processes with a duration of only microseconds or even nanoseconds, and a camera system is needed to clearly and continuously record the transient change processes in order to grasp the nature of the physical phenomena. In many studies of the ultra-high speed phenomenon conducted in laboratories, the duration of a fixed test area is usually several microseconds to several tens of microseconds, for example, the speed of an ultra-high speed target is 10km/s (the current ultra-high speed phenomenon is generally lower than this value), and the size of the test area is 100mm, then the duration of the ultra-high speed target in the test area is 10 μ s, and if 4 to 8 images of the ultra-high speed target can be obtained in the test area, the variation process of the ultra-high speed phenomenon is enough represented, that is, the frame frequency of the ultra-high speed target reaches at least 40 to 80 ten thousand frames/s. If the ultra high speed target speed is lower than 10km/s, the ultra high speed phenomenon is longer in the duration of the test area and a greater number of images can be obtained at the same frame rate. In order to record images without significant blurring due to movement of the object, the exposure time of each image must be sufficiently short, generally requiring the recorded image to have an amount of motion blur less than 1/10 of the image resolution, and the recorded image is deemed to satisfy the sharp imaging requirements.
At present, ultra-high-speed cameras available abroad adopt a Micro Channel Plate (MCP) technology, image pixels are about 130 ten thousand, two imaging modes are adopted, one imaging mode is only provided with one imaging channel, the frame frequency is inversely proportional to the image pixels, the frame frequency is about 2 ten thousand per second when the image is fully drawn, and the pixels are about 2 ten thousand when the highest frame frequency is 100 ten thousand per second; and the other adopts a framing imaging mode, and 4 channels are needed when 4 images are shot. The national Chinese institute of western annan optical engine institute and Shenzhen university can produce rotating mirror type framing film cameras with the number of sequences larger than 8 and the exposure imaging time larger than 200 nanoseconds, because of adopting a mechanical rotation mode, the exposure time of each image is difficult to be smaller than 100ns, and the cameras are rarely used along with the reduction of the film production quantity. The Chinese aerodynamic research and development center develops a multi-specification ultra-high-speed camera based on a multi-light-source spatial separation technology, the image pixels of the camera are more than 1000 thousands, high imaging resolution can be realized, self-luminescence of a test area can be well eliminated, optical axes of different sequences are inconsistent at different moments, thus the imaging angle of each image is inconsistent with the test area, and the background light spot quality of different sequences of images is different due to different optical path structures during imaging of different sequences.
Disclosure of Invention
The invention aims to provide a coaxial ultrahigh-speed multi-sequence laser shadow imaging device which can realize the consistency of optical axis and optical path structures of different sequence imaging, and can image the same test area, and the background quality of imaging light spots can be kept consistent.
In order to achieve the purpose, the invention provides the following scheme:
a coaxial ultra-high speed multi-sequence laser shadow imaging device comprises:
the multi-cavity light source system is used for emitting sequence laser beams;
the optical fiber coupling system is connected with the multi-cavity light source system and is used for coupling and transmitting the sequence laser beams;
the parallel light transmission imaging system is connected with the light coupling system and is used for collimating and converging the coupled light beams;
the imaging system is connected with the parallel light transmission imaging system and is used for carrying out aplanatic light splitting on the converged light beams to obtain a plurality of split images;
the data acquisition system is connected with the imaging system and used for receiving the light splitting images at different positions according to a certain time sequence and remotely transmitting the received light splitting images to the computer for image processing;
and the control system is respectively connected with the multi-cavity light source system and the data acquisition system and is used for controlling the flashing time of the laser beams with different sequences in the multi-cavity light source system and the opening and closing time of the exposure camera in the data acquisition system.
Optionally, the multiple cavity light source system comprises: the device comprises a plurality of cavities, reflectors, beam splitters and a control unit, wherein the reflectors, the beam splitters and the control unit are arranged corresponding to the cavities; sequence laser beams emitted by different cavities are output at the same position after passing through a reflector and a beam splitter which are correspondingly arranged; the control unit is connected with the plurality of cavities and used for controlling the flashing time of the laser beams in different sequences according to the control signal of the control system.
Optionally, the chamber is a laser head.
Optionally, the multiple cavity light source system comprises: the laser device comprises a first laser head, a second laser head, a third laser head, a fourth laser head, a first beam splitter, a second beam splitter, a third beam splitter, a first reflector, a second reflector and a control unit; the first laser head enters the optical fiber coupling system after passing through the first beam splitter and the second beam splitter, the second laser head enters the optical fiber coupling system after passing through the first reflector, the first beam splitter and the second beam splitter, the third laser head enters the optical fiber coupling system after passing through the third beam splitter and the second beam splitter, and the fourth laser head enters the optical fiber coupling system after passing through the second reflector, the third beam splitter and the second beam splitter; the control unit is used for controlling the first laser head, the second laser head, the third laser head and the fourth laser head according to the control signal of the control system.
Optionally, the fiber coupling system comprises: a coupler and an optical fiber; the coupler is connected with the multi-cavity light source system and used for coupling the sequence laser beams, and the optical fiber is connected with the coupler and used for transmitting the coupled beams.
Optionally, the parallel light transmission imaging system comprises: a collimating mirror and an imaging mirror; the coupled light beams form parallel light beams after passing through the collimating mirror, and the parallel light beams enter the imaging mirror to start converging after passing through the test area.
Optionally, the imaging system comprises a plurality of imaging lenses, a plurality of beam splitters, a plurality of mirrors, and a plurality of exposure cameras.
Optionally, the imaging system comprises: the system comprises a first imaging lens, a second imaging lens, a fourth beam splitter, a fifth beam splitter, a sixth beam splitter, a third reflector, a fourth reflector, a fifth reflector, a first exposure camera, a second exposure camera, a third exposure camera and a fourth exposure camera; the first imaging lens collimates the converged light beams of the imaging lens and then converges the collimated light beams through the second imaging lens, the converged light beams enter the first exposure camera through the fourth beam splitter, the fifth beam splitter and the third reflector, the converged light beams enter the second exposure camera through the fourth beam splitter and the fifth beam splitter, the converged light beams enter the third exposure camera through the fourth beam splitter, the sixth beam splitter and the fourth reflector, and the converged light beams enter the fourth exposure camera through the fourth beam splitter, the sixth beam splitter and the fifth reflector.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention adopts a multi-cavity light source to share one light path outlet, different sequences of laser beams share one set of imaging light path to enter the parallel light transmission device and the imaging light splitting device, the light axis and the light path structure of different sequences of imaging can be consistent by synchronizing the light sensing time and the laser flash time of the camera, the same test area is imaged, the background quality of imaging light spots can be kept consistent, and the multi-sequence imaging of the ultra-high speed phenomenon is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a coaxial ultra-high speed multi-sequence laser shadow imaging device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a multi-cavity light source system according to an embodiment of the present invention;
FIG. 3 is a schematic view of an imaging system according to an embodiment of the invention;
fig. 4 is a signal diagram of a control system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a coaxial ultrahigh-speed multi-sequence laser shadow imaging device which can realize the consistency of optical axis and optical path structures of different sequence imaging, and can image the same test area, and the background quality of imaging light spots can be kept consistent.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the coaxial ultra-high speed multi-sequence laser shadow imaging device provided by the invention comprises:
a multi-cavity light source system 1 for emitting a sequence of laser beams.
And the optical fiber coupling system is connected with the multi-cavity light source system and is used for coupling and transmitting the sequence laser beams. The optical fiber coupling system includes: a coupler 2 and an optical fiber 3; the coupler 2 is connected with the multi-cavity light source system 1 and used for coupling the sequence laser beams, and the optical fiber 3 is connected with the coupler 2 and used for transmitting the coupled beams. Because the peak power is high during laser flash, both the coupler 2 and the optical fiber 3 in the fiber coupling system need to meet the requirement of high-energy threshold laser spots.
And the parallel light transmission imaging system is connected with the light coupling system and is used for collimating and converging the coupled light beams. The parallel light transmission imaging system comprises: a collimating mirror 5 and an imaging mirror 7; the coupled light beams form parallel light beams after passing through the collimating mirror 5, and the parallel light beams enter the imaging mirror 7 after passing through the test area 6 to start converging. The relative aperture of the collimating mirror 5 and the imaging mirror 7 is usually about 1/10
And the imaging system 8 is connected with the parallel light transmission imaging system and is used for performing aplanatic light splitting on the converged light beams to obtain a plurality of split images.
And the data acquisition system 9 is connected with the imaging system 8 and used for receiving the light splitting images at different positions according to a certain time sequence and remotely transmitting the received light splitting images to a computer for image processing.
And the control system 10 is respectively connected with the multi-cavity light source system 1 and the data acquisition system 9 and is used for controlling the flash time of different sequences of laser beams in the multi-cavity light source system and the opening and closing time of an exposure camera in the data acquisition system.
The object of the invention is achieved in that: in the multi-cavity light source system 1, the output of pulse laser beams at the same position by light beams emitted by different cavities is realized through a series of reflectors and beam splitters, the laser beams emitted at different moments enter the same optical fiber 3 through a coupler 2 of an optical fiber coupling system for coupling and output, parallel light beams are generated after output divergent light beams 4 pass through a parallel light transmission imaging system, the parallel light beams are converged into an imaging system 8 after passing through a test area 6, the imaging system performs equal-path light splitting on the light beams, different short-time exposure cameras in a data acquisition system 9 receive split light images at different positions according to a certain time sequence, a first-sequence short-time exposure camera is turned on and starts to sense light before the multi-cavity light source system 1 flashes for the first time, the first-sequence short-time exposure camera is turned off after the first-time flashing is finished, a second-sequence short-time exposure camera is turned on and starts to sense light before the multi-cavity light source system 1 flashes for the second time, according to the sequence, the third, the fourth and other sequences of short-time exposure cameras are turned on and complete the light sensing, the light sensing time of each camera is determined by the flash time of the corresponding sequence of laser light sources, the data acquisition system 9 remotely transmits the images to a computer and carries out the post-processing of the images, and the control system 10 controls the flash time of the laser beams of different sequences and the turn-on and turn-off time of the cameras of the multi-cavity light source system 1.
Wherein the multiple cavity light source system 1 comprises: the device comprises a plurality of cavities, reflectors, beam splitters and a control unit, wherein the reflectors, the beam splitters and the control unit are arranged corresponding to the cavities; sequence laser beams emitted by different cavities are output at the same position after passing through a reflector and a beam splitter which are correspondingly arranged; the control unit is connected with the plurality of cavities and used for controlling the flashing time of the laser beams in different sequences according to the control signal of the control system.
If 4 images need to be obtained in one test, 4 cavities are needed, and the cavities are laser heads. As shown in fig. 2, the multi-cavity light source system 1 includes: the laser processing device comprises a first laser head 101, a second laser head 102, a third laser head 103, a fourth laser head 104, a first beam splitter 106, a second beam splitter 107, a third beam splitter 109, a first reflector 108, a second reflector 110 and a control unit 105. The first laser head 101 enters the optical fiber coupling system after passing through the first beam splitter 106 and the second beam splitter 107, the second laser head 102 enters the optical fiber coupling system after passing through the first reflector 108, the first beam splitter 106 and the second beam splitter 107, the third laser head 103 enters the optical fiber coupling system after passing through the third beam splitter 109 and the second beam splitter 107, and the fourth laser head 104 enters the optical fiber coupling system after passing through the second reflector 110, the third beam splitter 109 and the second beam splitter 107; the control unit 105 is used for controlling the first laser head 101, the second laser head 102, the third laser head 103 and the fourth laser head 104 according to the control signal of the control system 10.
The imaging system 8 includes a series of beam splitters, a mirror and a lens, where the beam splitters and the mirror perform aplanatic light splitting on the converged light beams, if 4 images need to be obtained in one test, 4 aplanatic light paths need to be formed, and if 8 images need to be obtained in one test, 8 aplanatic light paths need to be formed. As shown in fig. 3, the imaging system 8 includes: a first imaging lens 801, a second imaging lens 802, a fourth beam splitter 807, a fifth beam splitter 805, a sixth beam splitter 808, a third mirror 803, a fourth mirror 811, a fifth mirror 809, a first exposure camera 804, a second exposure camera 806, a third exposure camera 810, and a fourth exposure camera 812. The first imaging lens 801 collimates the converged light beam of the imaging mirror 7 and then converges the collimated light beam through the second imaging lens 802, the converged light beam enters the first exposure camera 804 through the fourth beam splitter 807, the fifth beam splitter 805 and the third reflector 803, the converged light beam enters the second exposure camera 806 through the fourth beam splitter 807 and the fifth beam splitter 805, the converged light beam enters the third exposure camera 810 through the fourth beam splitter 807, the sixth beam splitter 808 and the fourth reflector 811, and the converged light beam enters the fourth exposure camera 812 through the fourth beam splitter 807, the sixth beam splitter 808 and the fifth reflector 809.
The control system 10 sends out TTL signals according to a certain time sequence, controls the multi-cavity light source system 1 to flash in sequence according to the set time sequence, and controls the multiple short-time exposure cameras to turn on and off according to a certain time sequence. The control system 10 sends four TTL signals to the imaging system 8 according to different time sequences, a first exposure camera 804, a second exposure camera 806, a third exposure camera 810 and a fourth exposure camera 812 of the imaging system 8 are opened according to the time sequences, at the moment that the four cameras are opened, the control system 10 sends the four TTL signals to the multi-cavity light source system 1 according to the different time sequences, a first laser head 101, a second laser head 102, a third laser head 103 and a fourth laser head 104 in the multi-cavity light source system 1 flash according to given time sequences, and at the moment of flashing, different cameras record change information of the test area 6 respectively. The flashes of the first laser head 101, the second laser head 102, the third laser head 103 and the fourth laser head 104 are less than 10ns, and the exposure time of the first exposure camera 804, the second exposure camera 806, the third exposure camera 810 and the fourth exposure camera 812 is less than 1 mus, so that sequential imaging with a frame rate of more than 100 ten thousand frames/second and an exposure time of less than 10ns can be realized.
As shown in fig. 4, the horizontal axis represents time for signal supply, the vertical axis represents TTL signals, when the first TTL signal 905 is supplied to the first exposure camera 804, the first exposure camera 804 starts to expose for about 1 μ s, and when the first TTL signal 905 is supplied to the first exposure camera 804, the first TTL signal 901 is supplied to the multi-cavity optical system after a delay of 10ns to 200ns, and the first laser head 101 flashes; when the second TTL signal 906 is provided to the second exposure camera 806, the second exposure camera 806 starts to expose for about 1 μ s, and when the second TTL signal 906 is provided to the second exposure camera 806, after a delay of 10ns to 200ns, the second TTL signal 902 is provided to the multi-cavity optical system, and the second laser head 102 flashes; when the third TTL signal 907 is provided for the third exposure camera 810, the third exposure camera 810 starts to expose for about 1 μ s, when the third TTL signal 907 is provided for the third exposure camera 810, the third TTL signal 903 is provided for the multi-cavity optical system after the time delay of 10 ns-200 ns, and the third laser head 103 flashes; when the fourth TTL signal 908 is supplied to the fourth exposure camera 812, the fourth exposure camera 812 starts exposure for about 1 μ s, and when the fourth TTL signal 908 is supplied to the fourth exposure camera 812 with a delay of 10ns to 200ns, the fourth TTL signal 904 is supplied to the multi-cavity optical system and the fourth laser head 104 flashes.
The invention is the development and supplement on the basis of a multi-light source space technology, the optical axis of different sequences of imaging is inconsistent in the multi-light source space technology, so that the imaging area and the angle of each image are different, and the imaging light spot of each image possibly has larger difference. The invention adopts a multi-cavity light source to share one light path outlet, different sequences of laser beams share one set of imaging light path to enter the parallel light transmission device and the imaging light splitting device, and realizes multi-sequence imaging of the ultra-high speed phenomenon by synchronizing the light sensing time of the camera and the laser flash time.
The invention has the following characteristics:
1. the multi-cavity light source realizes the same position of the light beam outlets of different sequences of flashing;
2. different sequences of flash light beams share 1 set of optical fiber coupling system;
3. a plurality of sequence light beams pass through the test area through the same light path, namely, imaging light paths at different moments can be kept strictly consistent;
4. the background quality of the obtained different sequence images is basically consistent;
5. the exposure time for imaging the test area sequence is determined by the flash time of the light beams of different sequences, the highest frame frequency is determined by the shortest exposure time of the camera, and because the flash time of the laser light beams is shorter, an ultrahigh-speed target can be frozen instantly when an image is recorded, and the clear imaging of the sequence of the ultrahigh-speed phenomenon with higher speed can be realized.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A coaxial ultra-high speed multi-sequence laser shadow imaging device, comprising:
the multi-cavity light source system is used for emitting sequence laser beams;
the optical fiber coupling system is connected with the multi-cavity light source system and is used for coupling and transmitting the sequence laser beams;
the parallel light transmission imaging system is connected with the light coupling system and is used for collimating and converging the coupled light beams;
the imaging system is connected with the parallel light transmission imaging system and is used for carrying out aplanatic light splitting on the converged light beams to obtain a plurality of split images;
the data acquisition system is connected with the imaging system and used for receiving the light splitting images at different positions according to a certain time sequence and remotely transmitting the received light splitting images to the computer for image processing;
and the control system is respectively connected with the multi-cavity light source system and the data acquisition system and is used for controlling the flashing time of the laser beams with different sequences in the multi-cavity light source system and the opening and closing time of the exposure camera in the data acquisition system.
2. The coaxial ultra-high speed multi-sequence laser shadow imaging device according to claim 1, wherein the multi-cavity light source system comprises: the device comprises a plurality of cavities, reflectors, beam splitters and a control unit, wherein the reflectors, the beam splitters and the control unit are arranged corresponding to the cavities; sequence laser beams emitted by different cavities are output at the same position after passing through a reflector and a beam splitter which are correspondingly arranged; the control unit is connected with the plurality of cavities and used for controlling the flashing time of the laser beams in different sequences according to the control signal of the control system.
3. The coaxial ultra-high speed multi-sequence laser shadow imaging apparatus according to claim 2, wherein the chamber is a laser head.
4. The coaxial ultra-high speed multi-sequence laser shadow imaging device according to claim 3, wherein the multi-cavity light source system comprises: the laser device comprises a first laser head, a second laser head, a third laser head, a fourth laser head, a first beam splitter, a second beam splitter, a third beam splitter, a first reflector, a second reflector and a control unit; the first laser head enters the optical fiber coupling system after passing through the first beam splitter and the second beam splitter, the second laser head enters the optical fiber coupling system after passing through the first reflector, the first beam splitter and the second beam splitter, the third laser head enters the optical fiber coupling system after passing through the third beam splitter and the second beam splitter, and the fourth laser head enters the optical fiber coupling system after passing through the second reflector, the third beam splitter and the second beam splitter; the control unit is used for controlling the first laser head, the second laser head, the third laser head and the fourth laser head according to the control signal of the control system.
5. The coaxial ultra-high speed multi-sequence laser shadow imaging device according to claim 1, wherein the fiber coupling system comprises: a coupler and an optical fiber; the coupler is connected with the multi-cavity light source system and used for coupling the sequence laser beams, and the optical fiber is connected with the coupler and used for transmitting the coupled beams.
6. The coaxial ultra-high speed multi-sequence laser shadow imaging device according to claim 1, wherein the parallel light transmission imaging system comprises: a collimating mirror and an imaging mirror; the coupled light beams form parallel light beams after passing through the collimating mirror, and the parallel light beams enter the imaging mirror to start converging after passing through the test area.
7. The coaxial superspeed multi-sequence laser shadow imaging device according to claim 6, wherein the imaging system comprises a plurality of imaging lenses, a plurality of beam splitters, a plurality of mirrors, and a plurality of exposure cameras.
8. The coaxial ultra-high speed multi-sequence laser shadow imaging apparatus according to claim 7, wherein the imaging system comprises: the system comprises a first imaging lens, a second imaging lens, a fourth beam splitter, a fifth beam splitter, a sixth beam splitter, a third reflector, a fourth reflector, a fifth reflector, a first exposure camera, a second exposure camera, a third exposure camera and a fourth exposure camera; the first imaging lens collimates the converged light beam of the imaging lens and then converges the collimated light beam through the second imaging lens, the converged light beam enters the first exposure camera through the fourth beam splitter, the fifth beam splitter and the third reflector, the converged light beam enters the second exposure camera through the fourth beam splitter and the fifth beam splitter, the converged light beam enters the third exposure camera through the fourth beam splitter, the sixth beam splitter and the fourth reflector, and the converged light beam enters the fourth exposure camera through the fourth beam splitter, the sixth beam splitter and the fifth reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111626236.2A CN114509911A (en) | 2021-12-28 | 2021-12-28 | Coaxial superspeed multi-sequence laser shadow imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111626236.2A CN114509911A (en) | 2021-12-28 | 2021-12-28 | Coaxial superspeed multi-sequence laser shadow imaging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114509911A true CN114509911A (en) | 2022-05-17 |
Family
ID=81548215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111626236.2A Pending CN114509911A (en) | 2021-12-28 | 2021-12-28 | Coaxial superspeed multi-sequence laser shadow imaging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114509911A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116540212A (en) * | 2023-07-06 | 2023-08-04 | 中国空气动力研究与发展中心超高速空气动力研究所 | Three-dimensional imaging device and method |
Citations (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6489246A (en) * | 1987-09-30 | 1989-04-03 | Sony Corp | Fixing method for color sorting mechanism of color cathode-ray tube |
| US5682262A (en) * | 1995-12-13 | 1997-10-28 | Massachusetts Institute Of Technology | Method and device for generating spatially and temporally shaped optical waveforms |
| US5715047A (en) * | 1996-07-08 | 1998-02-03 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Scanning mode sensor for detection of flow inhomogeneities |
| JPH1115217A (en) * | 1997-06-27 | 1999-01-22 | Fuji Xerox Co Ltd | Image forming device |
| US20060061680A1 (en) * | 2004-09-17 | 2006-03-23 | Viswanathan Madhavan | System and method for capturing image sequences at ultra-high framing rates |
| US20100020319A1 (en) * | 2005-01-08 | 2010-01-28 | Lawrence Livermore National Security, Llc. | Portable laser synthesizer for high-speed multi-dimensional spectroscopy |
| US20100311005A1 (en) * | 2009-06-03 | 2010-12-09 | Carestream Health, Inc. | Apparatus for dental surface shape and shade imaging |
| CN101970135A (en) * | 2007-12-14 | 2011-02-09 | 贝斯特第二股份有限公司 | Sorting device, sorting method and sensor element for a sorting device |
| US20120301125A1 (en) * | 2011-05-27 | 2012-11-29 | Canon Kabushiki Kaisha | Image capture apparatus and method of controlling the same |
| CN102974918A (en) * | 2012-11-26 | 2013-03-20 | 清华大学 | Multi-spectral spectroscopic photography-based visual monitoring system |
| CN103533236A (en) * | 2013-09-27 | 2014-01-22 | 中国工程物理研究院流体物理研究所 | Superhigh-speed digital photography device capable of being applied to multiple schlieren photography and optical splitter |
| CN204086804U (en) * | 2014-08-08 | 2015-01-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of light beam chosen spacer of sequence laser shadowgraph system |
| CN104730716A (en) * | 2014-08-08 | 2015-06-24 | 中国空气动力研究与发展中心超高速空气动力研究所 | Laser fiber homogenizing device for shadow imaging illumination |
| CN104730855A (en) * | 2014-08-08 | 2015-06-24 | 中国空气动力研究与发展中心超高速空气动力研究所 | Superspeed sequence laser shadow imaging device based on beam split pyramid type |
| EP2907407A1 (en) * | 2012-12-26 | 2015-08-19 | Dalian Everspry Sci & Tech Co., Ltd | Pressure-sensing light and shadow imaging system and method for processing footprint image formed by the system |
| JP2015186171A (en) * | 2014-03-26 | 2015-10-22 | 株式会社ニコン | Imaging apparatus, method for controlling the same, and control program |
| CN105425508A (en) * | 2015-11-20 | 2016-03-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | Polarizing and beam-splitting apparatus for sequential laser shadowgraph |
| CN105425507A (en) * | 2015-11-20 | 2016-03-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | Appearance structure of multi-sequence laser shadowgraph system |
| CN205247031U (en) * | 2015-11-20 | 2016-05-18 | 中国空气动力研究与发展中心超高速空气动力研究所 | Parallel light transmission image device among multi -sequence laser shade photographic system |
| CN205247029U (en) * | 2015-11-20 | 2016-05-18 | 中国空气动力研究与发展中心超高速空气动力研究所 | Compensation filter among multi -sequence laser shade photographic system |
| CN105700273A (en) * | 2015-12-09 | 2016-06-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | Camera focus control device for ultra-high speed sequence laser shadow imaging |
| CN105739219A (en) * | 2015-11-20 | 2016-07-06 | 中国空气动力研究与发展中心超高速空气动力研究所 | Parallel light transmission imaging device in multi-sequence laser shadow photography system |
| CN205427410U (en) * | 2015-11-20 | 2016-08-03 | 中国空气动力研究与发展中心超高速空气动力研究所 | Multi -sequence laser shade photographic system's appearance structure |
| CN106406019A (en) * | 2016-08-31 | 2017-02-15 | 中国人民解放军国防科学技术大学 | Multi-framing optical imaging device with high temporal-spatial resolution and imaging method |
| CN108378825A (en) * | 2018-03-23 | 2018-08-10 | 张栋 | A kind of medical four colors multispectral imaging method and apparatus that black and white one camera is realized |
| CN108709510A (en) * | 2018-02-13 | 2018-10-26 | 中北大学 | A kind of laser target miss-distance of projectile measurement calibration method based on pulse shadowgraph imaging |
| CN108873595A (en) * | 2018-09-12 | 2018-11-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | Light and shadowgraph imaging device before hypervelocity flight model |
| CN108965734A (en) * | 2018-09-12 | 2018-12-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | Ultrahigh speed imaging method based on synchronously control |
| CN109407295A (en) * | 2018-12-18 | 2019-03-01 | 中国科学院深圳先进技术研究院 | It is a kind of based on DMD can polychrome excitation structure light microscopic system and polychrome exciting method |
| CN209486404U (en) * | 2018-12-13 | 2019-10-11 | 四川物科光学精密机械有限公司 | Nanosecond order space framing schlieren system |
| CN110412827A (en) * | 2019-08-09 | 2019-11-05 | 中国空气动力研究与发展中心超高速空气动力研究所 | Ultrahigh speed imaging sequences method based on the light splitting of pulsed light beam different wave length |
| CN110955107A (en) * | 2019-11-18 | 2020-04-03 | 长春理工大学 | Ultra-high-speed time resolution camera shooting device and method based on reflection imaging technology |
| CN111103237A (en) * | 2020-01-20 | 2020-05-05 | 中山新诺科技股份有限公司 | Laser direct imaging closed-loop real-time detection system and closed-loop real-time detection method |
| CN111308849A (en) * | 2019-11-18 | 2020-06-19 | 长春理工大学 | Ultra-high-speed time resolution camera shooting device and method based on schlieren technology |
-
2021
- 2021-12-28 CN CN202111626236.2A patent/CN114509911A/en active Pending
Patent Citations (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6489246A (en) * | 1987-09-30 | 1989-04-03 | Sony Corp | Fixing method for color sorting mechanism of color cathode-ray tube |
| US5682262A (en) * | 1995-12-13 | 1997-10-28 | Massachusetts Institute Of Technology | Method and device for generating spatially and temporally shaped optical waveforms |
| US5715047A (en) * | 1996-07-08 | 1998-02-03 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Scanning mode sensor for detection of flow inhomogeneities |
| JPH1115217A (en) * | 1997-06-27 | 1999-01-22 | Fuji Xerox Co Ltd | Image forming device |
| US20060061680A1 (en) * | 2004-09-17 | 2006-03-23 | Viswanathan Madhavan | System and method for capturing image sequences at ultra-high framing rates |
| US20100020319A1 (en) * | 2005-01-08 | 2010-01-28 | Lawrence Livermore National Security, Llc. | Portable laser synthesizer for high-speed multi-dimensional spectroscopy |
| CN101970135A (en) * | 2007-12-14 | 2011-02-09 | 贝斯特第二股份有限公司 | Sorting device, sorting method and sensor element for a sorting device |
| US20100311005A1 (en) * | 2009-06-03 | 2010-12-09 | Carestream Health, Inc. | Apparatus for dental surface shape and shade imaging |
| US20120301125A1 (en) * | 2011-05-27 | 2012-11-29 | Canon Kabushiki Kaisha | Image capture apparatus and method of controlling the same |
| CN102974918A (en) * | 2012-11-26 | 2013-03-20 | 清华大学 | Multi-spectral spectroscopic photography-based visual monitoring system |
| EP2907407A1 (en) * | 2012-12-26 | 2015-08-19 | Dalian Everspry Sci & Tech Co., Ltd | Pressure-sensing light and shadow imaging system and method for processing footprint image formed by the system |
| CN103533236A (en) * | 2013-09-27 | 2014-01-22 | 中国工程物理研究院流体物理研究所 | Superhigh-speed digital photography device capable of being applied to multiple schlieren photography and optical splitter |
| JP2015186171A (en) * | 2014-03-26 | 2015-10-22 | 株式会社ニコン | Imaging apparatus, method for controlling the same, and control program |
| CN204086804U (en) * | 2014-08-08 | 2015-01-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of light beam chosen spacer of sequence laser shadowgraph system |
| CN104730716A (en) * | 2014-08-08 | 2015-06-24 | 中国空气动力研究与发展中心超高速空气动力研究所 | Laser fiber homogenizing device for shadow imaging illumination |
| CN104730855A (en) * | 2014-08-08 | 2015-06-24 | 中国空气动力研究与发展中心超高速空气动力研究所 | Superspeed sequence laser shadow imaging device based on beam split pyramid type |
| CN105425508A (en) * | 2015-11-20 | 2016-03-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | Polarizing and beam-splitting apparatus for sequential laser shadowgraph |
| CN105425507A (en) * | 2015-11-20 | 2016-03-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | Appearance structure of multi-sequence laser shadowgraph system |
| CN205247031U (en) * | 2015-11-20 | 2016-05-18 | 中国空气动力研究与发展中心超高速空气动力研究所 | Parallel light transmission image device among multi -sequence laser shade photographic system |
| CN205247029U (en) * | 2015-11-20 | 2016-05-18 | 中国空气动力研究与发展中心超高速空气动力研究所 | Compensation filter among multi -sequence laser shade photographic system |
| CN105739219A (en) * | 2015-11-20 | 2016-07-06 | 中国空气动力研究与发展中心超高速空气动力研究所 | Parallel light transmission imaging device in multi-sequence laser shadow photography system |
| CN205427410U (en) * | 2015-11-20 | 2016-08-03 | 中国空气动力研究与发展中心超高速空气动力研究所 | Multi -sequence laser shade photographic system's appearance structure |
| CN105700273A (en) * | 2015-12-09 | 2016-06-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | Camera focus control device for ultra-high speed sequence laser shadow imaging |
| CN106406019A (en) * | 2016-08-31 | 2017-02-15 | 中国人民解放军国防科学技术大学 | Multi-framing optical imaging device with high temporal-spatial resolution and imaging method |
| CN108709510A (en) * | 2018-02-13 | 2018-10-26 | 中北大学 | A kind of laser target miss-distance of projectile measurement calibration method based on pulse shadowgraph imaging |
| CN108378825A (en) * | 2018-03-23 | 2018-08-10 | 张栋 | A kind of medical four colors multispectral imaging method and apparatus that black and white one camera is realized |
| CN108873595A (en) * | 2018-09-12 | 2018-11-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | Light and shadowgraph imaging device before hypervelocity flight model |
| CN108965734A (en) * | 2018-09-12 | 2018-12-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | Ultrahigh speed imaging method based on synchronously control |
| CN209486404U (en) * | 2018-12-13 | 2019-10-11 | 四川物科光学精密机械有限公司 | Nanosecond order space framing schlieren system |
| CN109407295A (en) * | 2018-12-18 | 2019-03-01 | 中国科学院深圳先进技术研究院 | It is a kind of based on DMD can polychrome excitation structure light microscopic system and polychrome exciting method |
| CN110412827A (en) * | 2019-08-09 | 2019-11-05 | 中国空气动力研究与发展中心超高速空气动力研究所 | Ultrahigh speed imaging sequences method based on the light splitting of pulsed light beam different wave length |
| CN110955107A (en) * | 2019-11-18 | 2020-04-03 | 长春理工大学 | Ultra-high-speed time resolution camera shooting device and method based on reflection imaging technology |
| CN111308849A (en) * | 2019-11-18 | 2020-06-19 | 长春理工大学 | Ultra-high-speed time resolution camera shooting device and method based on schlieren technology |
| CN111103237A (en) * | 2020-01-20 | 2020-05-05 | 中山新诺科技股份有限公司 | Laser direct imaging closed-loop real-time detection system and closed-loop real-time detection method |
Non-Patent Citations (3)
| Title |
|---|
| FAWEI KE 等: "Vision measurement technique of model position and its widespread application on the ballisitic range", 《MEASUREMENT》, vol. 140, pages 486 - 496 * |
| SIYUAN REN 等: "The hypervelocity impact resistance behaviors of NbC/Al2224 ceramic-metal composites", 《INTERNATIONAL JOURNAL OF IMPACT ENGINEERING》, vol. 148, pages 103759 * |
| 谢爱民 等: "多序列激光阴影成像技术研究及应用", 《实验流体力学》, vol. 28, no. 4, pages 84 - 88 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116540212A (en) * | 2023-07-06 | 2023-08-04 | 中国空气动力研究与发展中心超高速空气动力研究所 | Three-dimensional imaging device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108965734B (en) | Ultra-high speed imaging method based on synchronous control | |
| CN103197499B (en) | A kind of electrophotographic system of framing, scanning ultra high-speed optical simultaneously | |
| CN107589428B (en) | Multi-area array APD array-based composite mode laser radar imaging system | |
| CN103491303B (en) | Recording device for images of high-speed movement process | |
| CN104483676B (en) | A kind of 3D/2D scannerless laser radars complex imaging device | |
| CN102435407B (en) | Shooting system and method for shooting high-speed turbulence flowing image in wind tunnel test | |
| CN102680959B (en) | Transmitting module of correlated imaging laser radar | |
| CN103108125B (en) | A kind of capture Synchronizing Control Devices of multicamera system and method thereof | |
| CN102162974B (en) | Multi-spark extremely high-speed digital imaging system and method | |
| CN114509911A (en) | Coaxial superspeed multi-sequence laser shadow imaging device | |
| CN101644887A (en) | Method and system thereof for measuring time of exposure of door-control type image intensifier | |
| CN107422336A (en) | A kind of variable resolution Non-scanning mode streak tube laser imaging system of the big depth of field of big visual field | |
| CN203492110U (en) | Recording device for images of high-speed movement process | |
| CN113534596B (en) | RGBD stereo camera and imaging method | |
| CN101923161A (en) | Centered optical system is passive sniffer and the method with laser active compound imaging of the low-light of detector altogether | |
| CN106645045B (en) | TDI-CCD-based bidirectional scanning imaging method in fluorescence optical microscopy imaging | |
| RU164704U1 (en) | DEVICE FOR CHRONOGRAPHIC REGISTRATION OF OPTICAL RADIATION | |
| CN104698467A (en) | Multi-target pulse laser ranging device and method for different aiming lines | |
| CN210071281U (en) | High-speed transient schlieren system applied to large wind tunnel | |
| CN203178667U (en) | Synchronous framing scanning superspeed photoelectric photography system | |
| CN114993949B (en) | Compact multi-framing shadow and schlieren imager | |
| CN110850114A (en) | Acceleration measuring device based on particle image velocimetry | |
| CN112082731B (en) | Nanosecond image measuring system for cavitation research | |
| CN211179888U (en) | Acceleration measuring device based on particle image velocimetry and shutter switch | |
| CN103513265A (en) | Movable time slice three-dimensional imaging detecting method and device for charged particle beams or clusters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |