CN205247031U - Parallel light transmission image device among multi -sequence laser shade photographic system - Google Patents
Parallel light transmission image device among multi -sequence laser shade photographic system Download PDFInfo
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- CN205247031U CN205247031U CN201520930519.XU CN201520930519U CN205247031U CN 205247031 U CN205247031 U CN 205247031U CN 201520930519 U CN201520930519 U CN 201520930519U CN 205247031 U CN205247031 U CN 205247031U
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Abstract
The utility model belongs to hypervelocity transient state formation of image field relates to a parallel light transmission image device among multi -sequence laser shade photographic system, form collimating lens, third lens and fourth lens component imaging lens including first lens and second lens, first lens material is BK7, and its refracting index is 1.580, and the abbe constant is 64.169998, second lens material is SF1, and its refracting index is 1.71736, and the abbe constant is 29.51, first lens center thickness is 12.0mm, and two faces all are the convex surface, and camber is 2455.15mm, 766.66mm respectively, second lens center thickness is 12.0mm, and two faces are concave surface and convex surface respectively, and camber is respectively - 766.66mm, 1373.30mm, collimating lens's focus is 1000mm, and aperture is 100mm, and the sharp reflection reducing coating of 532nm wavelength is plated on the surface, first lens and fourth lens parameter are unanimous, and second lens and third lens parameter are unanimous, imaging lens's focus is 1000mm.
Description
Technical field
The utility model belongs to ultrahigh speed transient state imaging field, relates to parallel in a kind of multisequencing laser shadowgraph systemLight transmission imaging device.
Background technology
Along with the development of China's Aerospace Technology, weaponry and basic subject, relate to hypervelocity aerodynamics, ultrahigh speedThe research in the fields such as collision, blast and impact, burning and chemical reaction deepens continuously. In these research work, manyPhenomenon be the duration only for the even ultrahigh speed transient changing process of nanosecond of microsecond, need to have a kind of photographic system canThis process is carried out to clear, record by imaging continuously, to grasp the essence of physical phenomenon. This photographic system exceptAmplitude-frequency requires to reach 1,000 ten thousand width/seconds (being exposure image shortest time 100ns), can be to ultrahigh speed transient changing processCarry out outside sequence imaging, also must guarantee that the resolution ratio of every width image is enough high, the time for exposure is enough short, thereby improves intoImage sharpness, reduces ultrahigh speed motion and causes the fuzzy distortion of image.
At present domestic only have Xi'an ray machine institute of the Chinese Academy of Sciences, Shenzhen University can production sequence quantity be greater than 8, when exposure imageBetween be greater than the rotary mirror type framing film imaging systems of 200 nanoseconds, owing to adopting the mode of machinery rotation, the exposing to the sun of every width imageBetween the light time, be difficult to be less than 100ns. Domestic digital sequence imaging system is also immature on research and production, is difficult to meetThe needs of through engineering approaches. External sequence quantity is greater than 8, and the time for exposure is less than the ultrahigh speed digital imaging system skill of 100nsArt comparative maturity, adopts expensive nanosecond electro-optical shutter to realize sequence imaging conventionally, but this class high-end product is real to ChinaRow embargo and blockade on new techniques.
In order to meet the imaging of ultrahigh speed object variations process multisequencing, develop multisequencing laser shadowgraph system, this photographPhase system is to utilize multibeam laser light source light beam to carry out light splitting in different spatial and deviation principle, realizes multi-beam and carries out weightClose or separate with to the independent imaging of same target. Multisequencing laser shadowgraph system mainly comprises light-source system, directional lightTransmission imaging device, imaging system and data Collection & Processing System.
In order to meet the imaging of ultrahigh speed object variations process multisequencing, domestic demands develop voluntarily the time for exposure and are less than 100nsMultisequencing photographic system. It is directly test zone to be carried out to imaging (photoimaging) that at present external multisequencing is taken a picture,When imaging, light-sensitive medium receives the reverberation of test zone, and by microchannel plate technology, image in the same time is not enteredRow separately. But because the domestic microchannel plate spectroscopic imaging technology of not grasping, be difficult to realize image in the same time notSeparate.
Utility model content
It is a kind of directional light transmission imaging device that image does not separate in the same time that the purpose of this utility model is to provide.
In order to realize above-mentioned utility model object, the utility model provides putting down in a kind of multisequencing laser shadowgraph systemRow light transmission imaging device.
A directional light transmission imaging device in multisequencing laser shadowgraph system, comprises first lens and the second lensComposition collimation lens, the 3rd lens and the 4th lens composition imaging len;
First lens material is BK7, and its refractive index is 1.580, and Abbe constant is 64.169998; The second lens material isSF1, its refractive index is 1.71736, Abbe constant is 29.51; First lens center thickness is 12.0mm, and two faces allFor convex surface, curvature is respectively 2455.15mm, 766.66mm; The second lens center thickness is 12.0mm, and two faces respectivelyFor concave surface and convex surface, be respectively-766.66mm of curvature, 1373.30mm; The focal length of collimation lens is 1000mm, Tong GuangkouFootpath is 100mm, the surge permeable membrane of plated surface 532nm wavelength;
First lens is consistent with the 4th lens parameter, and the second lens are consistent with the 3rd lens parameter; The focal length of imaging len is1000mm。
Further, directional light transmission imaging device also comprises lens adjustment support, for collimation lens and imaging lenPosition and angle regulate.
Further, a kind of multisequencing laser shadowgraph system comprises the light-source system, the directional light transmission imaging that connect in turnDevice, imaging system and data Collection & Processing System, the outlet light beam of light-source system is positioned at first lens and the second lensThe focal position of combination collimation lens, the entrance of imaging system is positioned at after the 3rd lens and the 4th lens combination imaging lenFocal position.
The utility model beneficial effect is as follows:
1. the different light beams that send from light-source system in multisequencing laser shadowgraph system are positioned at diverse location, by thoroughlyAfter penetrating formula directional light transmission imaging device, can produce multiple real focus at diverse location, different real focus can be by many ordersIn row laser shadowgraph system, the light-dividing device of imaging system spatially separates not homotactic light beam. 2. notThe one times of focal length plane that is all positioned at colimated light system with sequence laser beam, therefore can produce collimated light beam, ensures test sectionThe imaging ratio in territory is consistent. 3. it is higher that light when collimated light beam is by imaging len is collected efficiency, and veiling glare is because to surroundingScattering, its energy is very low with respect to sequence laser beam energy, therefore in light path, can not produce veiling glare, is beneficial to imaging system lightThe light splitting of bundle.
Brief description of the drawings
Fig. 1 is the structural representation of the directional light transmission imaging device in the utility model multisequencing laser shadowgraph systemFigure;
Fig. 2 is the structural representation of the utility model first lens and the second lens composition collimation lens;
Fig. 3 is the structural representation of multisequencing laser shadowgraph system in embodiment.
Detailed description of the invention
A directional light transmission imaging device in multisequencing laser shadowgraph system, as depicted in figs. 1 and 2, comprisesFirst lens 6 and the second lens 7 form collimation lens, for the collimation to light beam; The 3rd lens 9 and the 4th lens 10Composition imaging len, for collimated light beam light beam is converged, it is clear to test zone to realize in conjunction with imaging system object lensImaging; Lens adjustment support, regulates for position and the angle of collimation lens and imaging len.
First lens 6 materials are BK7, and its refractive index is 1.580, and Abbe constant is 64.169998; The second lens 7Material is SF1, and its refractive index is 1.71736, and Abbe constant is 29.51; First lens 6 center thicknesses are 12.0mm,Two faces are all convex surface, and curvature is respectively 2455.15mm, 766.66mm; The second lens 7 center thicknesses are 12.0mm,Two faces are respectively concave surface and convex surface, be respectively-766.66mm of curvature, 1373.30mm; The focal length of collimation lens is1000mm, clear aperture is 100mm, the surge permeable membrane of plated surface 532nm wavelength;
First lens 6 is consistent with the 4th lens 10 parameters, and the second lens 7 are consistent with the 3rd lens 9 parameters; Imaging is saturatingThe focal length of mirror is 1000mm.
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail:
Embodiment 1
Multisequencing laser shadowgraph system as shown in Figure 3, comprises that the light-source system 2, the directional light transmission that connect in turn becomePicture device 1, imaging system 4 and data Collection & Processing System 5, the outlet light beam of light-source system 2 is positioned at first lens 6Combine the focal position of collimation lens with the second lens 7, the entrance of imaging system 4 is positioned at the 3rd lens 9 and the 4th lensFocal position after 10 combined imaging lens.
As shown in Figure 3, form divergent beams 3, divergent beams from the light-source system 2 of multisequencing laser shadowgraph system3 by the rear formation collimated light beam of directional light transmission imaging device 1, and collimated light beam further passes through through test zone 8 is rearDirectional light transmission imaging device 1 converges and enters imaging system 4, and imaging system 4 is not carried out imaging in the same time to test zone,Data Collection & Processing System 5 carries out acquisition and processing the image obtaining.
Wherein, the laser beam not sending in the same time in light-source system 2 is parallel by the rear generation of directional light transmission imaging device 1Light beam, collimated light beam is further by pooling a real focus after directional light transmission imaging device 1, and real focus exists simultaneouslyOn space, separate, further by the light path that different real focus can be formed after the light-dividing device of imaging system 4Separately, the different light-sensitive mediums of imaging system receive respectively the imaging facula of the formation of different real focus, not one-tenth in the same timeDo not disturb mutually as hot spot, data Collection & Processing System 5 is realized the different imaging faculas in imaging system is gatheredAnd transfer of data.
In embodiment 1, directional light transmission imaging device is in conjunction with light-source system, imaging system, data acquisition and processing systemSystem can be realized the sequence imaging that exposure image minimal time 10ns and imaging resolution are greater than 1,000 ten thousand pixels.
Claims (3)
1. the directional light transmission imaging device in multisequencing laser shadowgraph system, is characterized in that, comprises that first is saturatingMirror (6) and the second lens (7) composition collimation lens, the 3rd lens (9) and the 4th lens (10) composition imaging len;
First lens (6) material is BK7, and its refractive index is 1.580, and Abbe constant is 64.169998; The second lens (7)Material is SF1, and its refractive index is 1.71736, and Abbe constant is 29.51; First lens (6) center thickness is 12.0mm,Two faces are all convex surface, and curvature is respectively 2455.15mm, 766.66mm; The second lens (7) center thickness is 12.0mm,Two faces are respectively concave surface and convex surface, be respectively-766.66mm of curvature, 1373.30mm; The focal length of collimation lens is 1000mm,Clear aperture is 100mm, the surge permeable membrane of plated surface 532nm wavelength;
First lens (6) is consistent with the 4th lens (10) parameter, the second lens (7) and the 3rd lens (9) parameter oneCause; The focal length of imaging len is 1000mm.
2. the directional light transmission imaging device in a kind of multisequencing laser shadowgraph system according to claim 1, its spyLevy and be, also comprise lens adjustment support, regulate for position and the angle of collimation lens and imaging len.
3. a multisequencing laser shadowgraph system, its feature for fear of, comprise in turn the light-source system (2), the right that connectRequire directional light transmission imaging device (1), imaging system (4) and data Collection & Processing System (5) described in 1 or 2,The outlet light beam of light-source system (2) is positioned at the focal position of first lens (6) and the second lens (7) combination collimation lens,The entrance of imaging system (4) is positioned at the focal position after the 3rd lens (9) and the 4th lens (10) combined imaging lens.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520930519.XU CN205247031U (en) | 2015-11-20 | 2015-11-20 | Parallel light transmission image device among multi -sequence laser shade photographic system |
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| CN201520930519.XU CN205247031U (en) | 2015-11-20 | 2015-11-20 | Parallel light transmission image device among multi -sequence laser shade photographic system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108226161A (en) * | 2018-01-15 | 2018-06-29 | 天津大学 | A kind of system and method for removing speckle phenomena in Laser Shadowgraphy experiment |
| CN114509911A (en) * | 2021-12-28 | 2022-05-17 | 中国空气动力研究与发展中心超高速空气动力研究所 | Coaxial superspeed multi-sequence laser shadow imaging device |
-
2015
- 2015-11-20 CN CN201520930519.XU patent/CN205247031U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105739219B (en) * | 2015-11-20 | 2019-02-26 | 中国空气动力研究与发展中心超高速空气动力研究所 | Multisequencing laser shadowgraph system |
| CN108226161A (en) * | 2018-01-15 | 2018-06-29 | 天津大学 | A kind of system and method for removing speckle phenomena in Laser Shadowgraphy experiment |
| CN114509911A (en) * | 2021-12-28 | 2022-05-17 | 中国空气动力研究与发展中心超高速空气动力研究所 | Coaxial superspeed multi-sequence laser shadow imaging device |
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Granted publication date: 20160518 Termination date: 20161120 |
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