CN102890299B - Generating device and generating method of supersonic velocity pneumatic lens - Google Patents
Generating device and generating method of supersonic velocity pneumatic lens Download PDFInfo
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- CN102890299B CN102890299B CN201210397685.9A CN201210397685A CN102890299B CN 102890299 B CN102890299 B CN 102890299B CN 201210397685 A CN201210397685 A CN 201210397685A CN 102890299 B CN102890299 B CN 102890299B
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Abstract
The invention discloses a generating device and a generating method of a supersonic velocity pneumatic lens. The device comprises a refractive index adjusting device and a lens spraying pipe, wherein the refractive index adjusting device is used for mixing gas mediums with different refractive indexes to obtain a gas medium with needed refractive index; the lens spraying pipe is connected with the refractive index adjusting device, is placed at the downstream of the refractive index adjusting device, and is used for using the gas medium mixed and obtained by the refractive index adjusting device to form a needed pneumatic lens. With the adoption of the generating device and the generating method of the supersonic velocity pneumatic lens, the problem that light deflection, phase distortion or image defocusing of an optical lens generated by pneumatic optical effect in the related technique is not beneficial to observing targets is solved, and the high-precision control over light transmitting is achieved.
Description
Technical field
The present invention relates to lens art, in particular to a kind of supersonic velocity pneumatic lens generating apparatus and generation method.
Background technology
When aircraft does high-speed flight in an atmosphere, interact with incoming flow and define complex flowfield structure, particularly when supersonic flight, the structures such as shock wave, rarefaction wave, turbulent boundary layer, cause its ambient density field to change, corresponding refractive index field presents obvious unevenness over time and space.When the light of object observing is through such refractive index field, deflection of light, phase distortion or imaging can be produced defocus, what optical system received will be the target image be disturbed, this, by greatly affecting its detection, identifying and the ability of tracking target, directly or indirectly have impact on the performance of aircraft each side.
Traditional optical lens cannot avoid unexpected aero-optical effect, be unfavorable for the observation of target, in prior art, utilize the scheme of Pneumatic air adjusting technology in addition, Pneumatic air adjusting can isolation laser chamber and ambient atmosphere, obtains specific pressure reduction, it is the vitals of high-energy laser, but Pneumatic air adjusting cannot obtain specific index distribution flow field, do not reach specific focusing and the effect of dispersing.
Produce due to aero-optical effect the problem being unfavorable for object observing that deflection of light, phase distortion or imaging defocus and cause for the optical lens in correlation technique, not yet propose effective solution at present.
Summary of the invention
The invention provides a kind of supersonic velocity pneumatic lens generating apparatus and generation method, produce to solve optical lens in correlation technique due to aero-optical effect the problem being unfavorable for object observing that deflection of light, phase distortion or imaging defocus and cause.
According to an aspect of the present invention, provide a kind of supersonic velocity pneumatic lens generating apparatus, this device comprises: adjustable refractive index device, for the gas medium with different refractivity being mixed to get the gas medium of required refractive index; Lens jet pipe, is connected with adjustable refractive index device, is positioned at the downstream of adjustable refractive index device, and the gas medium for being mixed to get by adjustable refractive index device forms required pneumatic lens.
Preferably, adjustable refractive index device comprises: the first compressed air source unit, is the gas medium of first refractive rate for providing refractive index; Second compressed air source unit is the gas medium of the second refractive index for providing refractive index; Mixing chamber, mixing chamber is connected with the first compressed air source unit and the second compressed air source unit respectively, and the gas medium provided for the gas medium that provided by the first compressed air source unit and the second compressed air source unit is mixed to get the gas medium of required refractive index.
Preferably, adjustable refractive index device also comprises: flow controller, is connected with the first compressed air source unit and the second compressed air source unit, provides the flow of gas medium for controlling the first compressed air source unit and the second compressed air source unit in mixing chamber.
Preferably, flow controller comprises first flow controller and second amount controller, wherein, first flow controller is connected with the first compressed air source unit, the flow of gas medium is provided for controlling the first compressed air source unit in mixing chamber, second amount controller is connected with the second compressed air source unit, provides the flow of gas medium for controlling the second compressed air source unit in mixing chamber.
Preferably, the gas medium of first refractive rate is carbon dioxide, and the gas medium of the second refractive index is helium.
According to a further aspect in the invention, provide a kind of supersonic velocity pneumatic lens generation method, the method comprises: the gas medium gas medium with different refractivity being mixed to get required refractive index; The gas medium scioptics jet pipe of refractive index needed for obtaining is formed required pneumatic lens.
Preferably, the gas medium gas medium with different refractivity being mixed to get required refractive index comprises: obtain the gas medium that refractive index is first refractive rate; Obtain the gas medium that refractive index is the second refractive index; The gas medium of the gas medium of first refractive rate and the second refractive index is mixed to get the gas medium of required refractive index.
Preferably, the gas medium gas medium of the gas medium of first refractive rate and the second refractive index being mixed to get required refractive index comprises: control the flow of the gas medium of first refractive rate and the gas medium of the second refractive index to obtain the gas medium of required refractive index by flow controller.
Preferably, flow controller comprises first flow controller and second amount controller, the flow being controlled the gas medium of first refractive rate and the gas medium of the second refractive index by flow controller is comprised: first flow controller controls the flow of the gas medium of first refractive rate, and second amount controller controls the flow of the gas medium of the second refractive index.
Preferably, by following steps determination lens jet pipe: the geometric configuration determining required pneumatic lens; The lens jet pipe that can produce the pneumatic lens of geometric configuration is determined according to the geometric configuration of required pneumatic lens.
Preferably, determine that according to the geometric configuration of required pneumatic lens the step of the lens jet pipe that can produce the pneumatic lens of geometric configuration comprises: the circumcircle of the geometric configuration of the required pneumatic lens determined or circumscribed rectangle; The jet pipe streamline with circumcircle or circumscribed rectangle is obtained according to the circumcircle determined or circumscribed rectangle; What determine, there is the lens jet pipe wall tracking out the pneumatic lens of geometric configuration in the jet pipe streamline of circumcircle or circumscribed rectangle, determine lens jet pipe.
In the present invention, first utilize the gas medium with different refractivity to mix, obtain the gas medium of required refractive index, and then ensure that the pneumatic lens of generation possess required refractive index, after obtaining possessing the gas medium of required refractive index, this gas medium is imported lens jet pipe, because lens jet pipe can generate the lens-section of required geometric configuration, therefore, the pneumatic lens formed by this lens jet pipe are the pneumatic lens of required refractive index and required geometric configuration, this pneumatic lens can be used for the adverse effect that compensation aero-optical effect brings, reduce the shake of imageable target, the impact of distortion and the factor such as fuzzy, solving optical lens in correlation technique due to aero-optical effect produces deflection of light, the problem being unfavorable for object observing that phase distortion or imaging defocus and cause, achieve and the high precision of light transmission is controlled.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the preferred structural drawing of one of the supersonic velocity pneumatic lens generating apparatus according to the embodiment of the present invention;
Fig. 2 a-Fig. 2 d is the preferred schematic diagram of the lens-section geometric configuration according to the embodiment of the present invention;
Fig. 3 is the preferred structural drawing of another kind of the supersonic velocity pneumatic lens generating apparatus according to the embodiment of the present invention;
Fig. 4 is another preferred structural drawing of the supersonic velocity pneumatic lens generating apparatus according to the embodiment of the present invention;
Fig. 5 is another preferred structural drawing of the supersonic velocity pneumatic lens generating apparatus according to the embodiment of the present invention;
Fig. 6 is the preferred process flow diagram of one of the supersonic velocity pneumatic lens generation method according to the embodiment of the present invention;
Fig. 7 a-Fig. 7 h is the schematic diagram of circumcircle according to the geometric configuration of lens-section different in Fig. 2 or circumscribed rectangle;
Fig. 8 a and Fig. 8 b is the schematic diagram of the jet pipe streamline determined according to a kind of round section in Fig. 7 a-Fig. 7 h and a kind of square-section;
Fig. 9 a and Fig. 9 b is the schematic diagram of the lens jet pipe wall configuration tracking out required geometric configuration in the jet pipe streamline in Fig. 8 a and Fig. 8 b; And
Figure 10 a and Figure 10 b is the schematic diagram of the lens jet pipe determined in Fig. 9 a and Fig. 9 b.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Embodiment 1
Present embodiments provide a kind of supersonic velocity pneumatic lens generating apparatus, as shown in Figure 1, this device comprises: adjustable refractive index device 102, for the gas medium with different refractivity being mixed to get the gas medium of required refractive index, preferably, the gas medium with larger refractive index is mixed, to be met the gas medium of required refractive index compared with the gas medium of little refraction rate with having; Lens jet pipe 104, be connected with adjustable refractive index device 102, be positioned at the downstream of adjustable refractive index device 102, gas medium for being mixed to get by adjustable refractive index device 102 forms required pneumatic lens, wherein, lens jet pipe is determine according to the geometric configuration of required pneumatic lens, different lens jet pipes can produce difform startup lens, Fig. 2 illustrates the geometric configuration of different lens-section, wherein, Fig. 2 a-Fig. 2 d shows the lens-section respectively illustrating biconvex structure, plano-convex structure, double-concave structure, plano-concave structure.
In the present invention, first utilize the gas medium with different refractivity to mix, obtain the gas medium of required refractive index, and then ensure that the pneumatic lens of generation possess required refractive index, after obtaining possessing the gas medium of required refractive index, this gas medium is imported lens jet pipe, because lens jet pipe can generate the lens-section of required geometric configuration, therefore, the pneumatic lens formed by this lens jet pipe are the pneumatic lens of required refractive index and required geometric configuration, this pneumatic lens can be used for the adverse effect that compensation aero-optical effect brings, reduce the shake of imageable target, the impact of distortion and the factor such as fuzzy, solving optical lens in correlation technique due to aero-optical effect produces deflection of light, the problem being unfavorable for object observing that phase distortion or imaging defocus and cause, achieve and the high precision of light transmission is controlled.
Of the present invention one preferred embodiment in, provide a kind of preferred adjustable refractive index device 102, specifically, as shown in Figure 3, this adjustable refractive index device 102 comprises: the first compressed air source unit 302, is the gas medium of first refractive rate for providing refractive index; Second compressed air source unit 304, be the gas medium of the second refractive index for providing refractive index, the gas medium of above-mentioned first refractive rate and the gas medium of the second refractive index are the gas medium that refractive index difference is larger, such as, the gas medium of first refractive rate is carbon dioxide, and the gas medium of the second refractive index is helium; And mixing chamber 306, mixing chamber 306 is connected with the first compressed air source unit 302 and the second compressed air source unit 304 respectively, and the gas medium of the second refractive index provided for the gas medium of first refractive rate that provided by the first compressed air source unit 302 and the second compressed air source unit 304 is mixed to get the gas medium of required refractive index.Preferred embodiment above-mentioned, by the mixing of the gas medium to different refractivity, achieve the control to the pneumatic index of refraction in lens.
Of the present invention another preferred embodiment in, as shown in Figure 4, this supersonic velocity pneumatic lens generating apparatus also comprises: flow controller 402, being connected with the first compressed air source unit 302 and the second compressed air source unit 304, providing the flow of gas medium for controlling the first compressed air source unit 302 and the second compressed air source unit 304 in mixing chamber 306.Preferably, as shown in Figure 5, flow controller 402 comprises first flow controller 502 and second amount controller 504, wherein, first flow controller 502 is connected with the first compressed air source unit 302, there is provided the flow of gas medium for controlling the first compressed air source unit 302 in mixing chamber 306, second amount controller 504 is connected with the second compressed air source unit 304, provides the flow of gas medium for controlling the second compressed air source unit 304 in mixing chamber 306.
It should be noted that herein; above-mentioned preferred embodiment in compressed air source unit be two; but the present invention is not limited thereto; compressed air source unit of the present invention can be multiple; as three; the gas and vapor permeation of different refractivity is provided to obtain the gas of required refractive index, all within protection scope of the present invention by multiple different compressed air source unit.
Embodiment 2
Based on the supersonic velocity pneumatic lens generating apparatus in above-described embodiment 1, present invention also offers a kind of supersonic velocity pneumatic lens generation method, as shown in Figure 6, the method comprises:
S602, is mixed to get the gas medium of required refractive index by the gas medium with different refractivity; Preferably, the gas medium with larger refractive index is mixed, to be met the gas medium of required refractive index compared with the gas medium of little refraction rate with having.
S604, forms required pneumatic lens by the gas medium scioptics jet pipe of refractive index needed for obtaining.Wherein, lens jet pipe is determine according to the geometric configuration of required pneumatic lens, and different lens jet pipes can produce difform pneumatic lens, particularly, Fig. 2 illustrates the geometric configuration of different lens-section, comprises biconvex structure, plano-convex structure, double-concave structure, plano-concave structure etc.
In the present invention, first utilize the gas medium with different refractivity to mix, obtain the gas medium of required refractive index, and then ensure that the pneumatic lens of generation possess required refractive index, after obtaining possessing the gas medium of required refractive index, this gas medium is imported lens jet pipe, because lens jet pipe can generate the lens-section of required geometric configuration, therefore, the pneumatic lens formed by this lens jet pipe are the pneumatic lens of required refractive index and required geometric configuration, this pneumatic lens can be used for the adverse effect that compensation aero-optical effect brings, reduce the shake of imageable target, the impact of distortion and the factor such as fuzzy, solving optical lens in correlation technique due to aero-optical effect produces deflection of light, the problem being unfavorable for object observing that phase distortion or imaging defocus and cause, achieve and the high precision of light transmission is controlled.
Of the present invention one preferred embodiment in, the gas medium that the gas medium with different refractivity is mixed to get required refractive index is comprised: obtaining refractive index is the gas medium of first refractive rate; Obtain the gas medium that refractive index is the second refractive index, preferably, the gas medium of above-mentioned first refractive rate and the gas medium of the second refractive index are the gas medium that refractive index difference is larger, such as, the gas medium of first refractive rate is carbon dioxide, and the gas medium of the second refractive index is helium; The gas medium of the gas medium of first refractive rate and the second refractive index is mixed to get the gas medium of required refractive index.Preferred embodiment above-mentioned, by the mixing of the gas medium of different refractivity, achieve the control to the pneumatic index of refraction in lens.
Of the present invention one preferred embodiment in, the gas medium that the gas medium of the gas medium of first refractive rate and the second refractive index is mixed to get required refractive index is comprised: control the flow of the gas medium of first refractive rate and the gas medium of the second refractive index to obtain the gas medium of required refractive index by flow controller.Preferably, flow controller comprises first flow controller and second amount controller, the flow being controlled the gas medium of first refractive rate and the gas medium of the second refractive index by flow controller is comprised: first flow controller controls the flow of the gas medium of first refractive rate, and second amount controller controls the flow of the gas medium of the second refractive index.
It should be noted that herein; above-mentioned preferred embodiment in compressed air source unit be two; but the present invention is not limited thereto; compressed air source unit of the present invention can be multiple; as three; the gas and vapor permeation of different refractivity is provided to obtain the gas of required refractive index, all within protection scope of the present invention by multiple different compressed air source unit.
In addition, present invention also offers a kind of preferred scheme determining described lens jet pipe, specifically, the program comprises the steps: the geometric configuration determining required pneumatic lens, preferably, Fig. 2 illustrates the geometric configuration of different lens-section, and wherein, Fig. 2 a-Fig. 2 d shows the lens-section respectively illustrating biconvex structure, plano-convex structure, double-concave structure, plano-concave structure; The lens jet pipe that can produce the pneumatic lens of described geometric configuration is determined according to the geometric configuration of required pneumatic lens.
Particularly, determine that according to the geometric configuration of required pneumatic lens the step of the lens jet pipe that can produce the pneumatic lens of described geometric configuration comprises: the circumcircle of the geometric configuration of the required pneumatic lens determined or circumscribed rectangle, particularly, Fig. 7 illustrates the circumcircle of the geometric configuration of the different lens-section shown in Fig. 2 or circumscribed rectangle, wherein, Fig. 7 a-Fig. 7 d illustrates the circumcircle structure of lens-section shown in Fig. 2, and Fig. 7 e-Fig. 7 h illustrates the circumscribed rectangular configuration of lens-section shown in Fig. 2, obtain the jet pipe streamline with described circumcircle or circumscribed rectangle according to the described circumcircle determined or circumscribed rectangle, preferably, Fig. 8 a illustrates the jet pipe streamline according to circumcircle structure in Fig. 7, and Fig. 8 b illustrates the jet pipe streamline according to rectangular configuration circumscribed in Fig. 7, described determine there is the lens jet pipe wall tracking out the pneumatic lens of described geometric configuration in the jet pipe streamline of described circumcircle or circumscribed rectangle, particularly, as shown in Figure 9, Fig. 9 a is the lens jet pipe wall configuration tracking out required geometric configuration in the circumcircle determined, Fig. 9 b tracks out the lens jet pipe wall configuration of required geometric configuration in the circumscribed rectangle determined, along outlet flow face backstepping to entrance stream interface, finally determine required described lens jet pipe, as shown in Figure 10, Figure 10 a is the lens jet pipe according to geometric configuration needed for tracking out in circumcircle, Figure 10 b is the lens jet pipe according to geometric configuration needed for tracking out in circumscribed rectangle.
As can be seen from the above description, the present invention utilizes the gas medium with different refractivity to mix, and obtains the gas medium of required refractive index, and then ensure that the pneumatic lens of generation possess required refractive index, after obtaining possessing the gas medium of required refractive index, this gas medium is imported lens jet pipe, because lens jet pipe can generate the lens-section of required geometric configuration, therefore, the pneumatic lens formed by this lens jet pipe are the pneumatic lens of required refractive index and required geometric configuration, this pneumatic lens can be used for the adverse effect that compensation aero-optical effect brings, reduce the shake of imageable target, the impact of distortion and the factor such as fuzzy, solving optical lens in correlation technique due to aero-optical effect produces deflection of light, the problem being unfavorable for object observing that phase distortion or imaging defocus and cause, achieve and the high precision of light transmission is controlled.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a supersonic velocity pneumatic lens generating apparatus, is characterized in that, comprising:
Adjustable refractive index device, for being mixed to get the gas medium of required refractive index by the gas medium with different refractivity; And
Lens jet pipe, is connected with described adjustable refractive index device, is positioned at the downstream of described adjustable refractive index device, and the described gas medium for being mixed to get by described adjustable refractive index device forms required pneumatic lens,
Wherein, described lens jet pipe is determined according to the geometric configuration of required pneumatic lens, and different described lens jet pipes produces difform pneumatic lens, and described geometric configuration comprises biconvex structure, plano-convex structure, double-concave structure and plano-concave structure.
2. device according to claim 1, is characterized in that, described adjustable refractive index device comprises:
First compressed air source unit is the gas medium of first refractive rate for providing refractive index;
Second compressed air source unit is the gas medium of the second refractive index for providing refractive index; And
Mixing chamber, described mixing chamber is connected with described first compressed air source unit and described second compressed air source unit respectively, and the gas medium provided for the gas medium that provided by described first compressed air source unit and described second compressed air source unit is mixed to get the gas medium of required refractive index.
3. device according to claim 2, it is characterized in that, described adjustable refractive index device also comprises: flow controller, be connected with described first compressed air source unit and described second compressed air source unit, the flow of gas medium is provided for controlling the first compressed air source unit described in described mixing chamber and described second compressed air source unit.
4. device according to claim 3, it is characterized in that, described flow controller comprises first flow controller and second amount controller, wherein, described first flow controller is connected with described first compressed air source unit, there is provided the flow of gas medium for controlling the first compressed air source unit described in described mixing chamber, described second amount controller is connected with described second compressed air source unit, provides the flow of gas medium for controlling the second compressed air source unit described in described mixing chamber.
5. device according to claim 2, is characterized in that, the gas medium of described first refractive rate is carbon dioxide, and the gas medium of described second refractive index is helium.
6. a supersonic velocity pneumatic lens generation method, is characterized in that, comprising:
The gas medium with different refractivity is mixed to get the gas medium of required refractive index; And
The gas medium scioptics jet pipe of refractive index needed for obtaining is formed required pneumatic lens;
Wherein, described lens jet pipe is determined according to the geometric configuration of required pneumatic lens, and different described lens jet pipes produces difform pneumatic lens, and described geometric configuration comprises biconvex structure, plano-convex structure, double-concave structure and plano-concave structure.
7. method according to claim 6, is characterized in that, the described gas medium gas medium with different refractivity being mixed to get required refractive index comprises:
Obtain the gas medium that refractive index is first refractive rate;
Obtain the gas medium that refractive index is the second refractive index; And
The gas medium of the gas medium of described first refractive rate and described second refractive index is mixed to get the gas medium of required refractive index.
8. method according to claim 7, is characterized in that, is comprised by the gas medium that the gas medium of the gas medium of described first refractive rate and described second refractive index is mixed to get required refractive index:
The flow of the gas medium of described first refractive rate and the gas medium of described second refractive index is controlled to obtain the gas medium of required refractive index by flow controller.
9. method according to claim 8, it is characterized in that, described flow controller comprises first flow controller and second amount controller, the described flow controlling the gas medium of described first refractive rate and the gas medium of described second refractive index by flow controller comprises: described first flow controller controls the flow of the gas medium of described first refractive rate, and described second amount controller controls the flow of the gas medium of described second refractive index.
10. method according to claim 6, is characterized in that, determines described lens jet pipe by following steps:
Determine the geometric configuration of required pneumatic lens; And
The lens jet pipe that can produce the pneumatic lens of described geometric configuration is determined according to the geometric configuration of required pneumatic lens.
11. methods according to claim 9, is characterized in that, determine that the step of the lens jet pipe that can produce the pneumatic lens of described geometric configuration comprises according to the geometric configuration of required pneumatic lens:
The circumcircle of the geometric configuration of the required pneumatic lens determined or circumscribed rectangle;
The jet pipe streamline with described circumcircle or circumscribed rectangle is obtained according to the described circumcircle determined or circumscribed rectangle; And
Described determine there is the lens jet pipe wall tracking out the pneumatic lens of described geometric configuration in the jet pipe streamline of described circumcircle or circumscribed rectangle, determine described lens jet pipe.
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| CN201210397685.9A CN102890299B (en) | 2012-10-18 | 2012-10-18 | Generating device and generating method of supersonic velocity pneumatic lens |
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| CN201210397685.9A CN102890299B (en) | 2012-10-18 | 2012-10-18 | Generating device and generating method of supersonic velocity pneumatic lens |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3410628A (en) * | 1964-09-21 | 1968-11-12 | Bell Telephone Labor Inc | Gas lens using two gases having unequal refractive indices |
| CN1409128A (en) * | 2001-10-01 | 2003-04-09 | 鸿富锦精密工业（深圳）有限公司 | Method for producing gradient refractive index distribution optical assembly |
| KR20090116458A (en) * | 2008-05-07 | 2009-11-11 | 부산대학교 산학협력단 | Aerodynamic lens capapable of focusing wide range of particles |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100846439B1 (en) * | 2000-11-07 | 2008-07-16 | 에이에스엠엘 유에스, 인크. | Method and apparatus for regulating refractive index variations of a lithographic tool |
-
2012
- 2012-10-18 CN CN201210397685.9A patent/CN102890299B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3410628A (en) * | 1964-09-21 | 1968-11-12 | Bell Telephone Labor Inc | Gas lens using two gases having unequal refractive indices |
| CN1409128A (en) * | 2001-10-01 | 2003-04-09 | 鸿富锦精密工业（深圳）有限公司 | Method for producing gradient refractive index distribution optical assembly |
| KR20090116458A (en) * | 2008-05-07 | 2009-11-11 | 부산대학교 산학협력단 | Aerodynamic lens capapable of focusing wide range of particles |
Non-Patent Citations (3)
| Title |
|---|
| 自由旋气动窗口的类透镜效应;刘天华;《中国激光》;20020131;第29卷(第1期);1-3 * |
| 自由旋涡气动窗口的光学特性研究;易仕和;《激光与红外》;20020630;第32卷(第3期);168-170 * |
| 高超声速长时间风洞喷管设计;李东霞;《LHD2011年度夏季学术研讨会》;20111223;75-79 * |
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