CN105866970A - Reflective type high-speed camera shooting schlieren system applied to constant volume combustion bomb and capable of correcting chromatic aberration - Google Patents
Reflective type high-speed camera shooting schlieren system applied to constant volume combustion bomb and capable of correcting chromatic aberration Download PDFInfo
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- 230000003287 optical effect Effects 0.000 abstract description 8
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- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- G02B27/54—Schlieren-optical systems
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
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Abstract
本发明公开了一种可矫正色差的反射式定容燃烧弹高速摄像纹影系统，包括沿光路依次设置的光源、光纤、聚光镜组、狭缝装置、第一反射镜、准直镜、定容燃烧弹、纹影镜、第二反射镜、刀口和高速摄像机，所述光纤的光输入端与光源连接，所述光纤的光输出端与聚光镜组连接，所述聚光镜组的焦点与准直镜经过第一反射镜反射后的焦点在狭缝装置处重合，所述刀口位于纹影镜经过第二反射镜反射后的焦点处。本发明采用聚光镜组对现有的聚光镜进行了改进，矫正了复色光在经过透镜后产生的色差，从而能够更准确的获得定容燃烧弹内真实的球形火焰传播照片。
The invention discloses a reflective constant-volume incendiary bomb high-speed camera schlieren system capable of correcting chromatic aberration, which comprises a light source, an optical fiber, a condenser lens group, a slit device, a first reflector, a collimating mirror, a constant-volume Incendiary bomb, schlieren mirror, second reflector, knife edge and high-speed camera, the optical input end of the optical fiber is connected with the light source, the optical output end of the optical fiber is connected with the condenser lens group, and the focus of the condenser lens group is connected with the collimating lens The focal points reflected by the first reflecting mirror coincide at the slit device, and the knife edge is located at the focal point of the schlieren mirror reflected by the second reflecting mirror. The present invention adopts the condenser lens group to improve the existing condenser lens, and corrects the chromatic aberration produced by the polychromatic light after passing through the lens, so that the real spherical flame propagation photos in the constant volume incendiary bomb can be obtained more accurately.
Description
技术领域technical field
本发明涉及反射式纹影系统，具体地指一种可矫正色差的反射式定容燃烧弹高速摄像纹影系统。The invention relates to a reflective schlieren system, in particular to a reflective constant-volume incendiary bomb high-speed camera schlieren system capable of correcting chromatic aberration.
背景技术Background technique
定容燃烧弹是模拟发动机内气缸活塞接近于上止点燃烧过程的实验装置，高速纹影系统利用燃料燃烧时定容燃烧弹内流体密度不同从而对通过的光产生不同的折射效果，通过的平行光在经过一端玻璃窗口在定容燃烧弹内折射经过另一端玻璃窗口最终使得高速摄像机捕捉定容燃烧弹内的球形火焰传播的过程。The constant-volume incendiary bomb is an experimental device that simulates the combustion process of the cylinder piston in the engine close to the top dead center. The high-speed schlieren system utilizes the different density of the fluid in the constant-volume incendiary bomb when the fuel burns to produce different refraction effects on the passing light. The parallel light is refracted in the constant volume incendiary bomb through the glass window at one end and passes through the glass window at the other end, finally enabling the high-speed camera to capture the process of spherical flame propagation in the constant volume incendiary bomb.
传统反射式定容燃烧弹高速摄像纹影系统采用的是卤钨灯或者氙气灯作为光源，耗电量大、产热量大，散热处理不好容易光衰，使得输出的光的效果不稳定影响实验精度，同时产生的高热量也容易使得后面的聚光镜发生形变影响实验精度。此外，由于实验室中用的光源都是复色光，在传统的反射式定容燃烧弹高速摄像纹影系统中聚光镜都采用球面的凸透镜，复色光在经过凸透镜折射后由于各种颜色的光的折射率不同从而会产生色差现象，使得光线的最外圈会有彩色的光圈，在研究定容弹内的球形火焰的层流燃烧速度时需要测量最终投射在高速摄像机中的球形火焰图像的半径，如果折射时产生色差现象，最后的高速摄像机通过纹影系统拍摄到的球形火焰半径就会与定容燃烧弹中的真实实验的球形火焰的半径有所偏差，从而最终计算的球形传播火焰的参数也会与真实的球形传播火焰的参数有所偏差。The traditional reflective constant volume incendiary bomb high-speed camera schlieren system uses halogen tungsten lamp or xenon lamp as the light source, which consumes a lot of power and produces a lot of heat. If the heat dissipation is not good, it is easy to light decay, which makes the output light effect unstable. At the same time, the high heat generated will easily deform the condenser lens behind and affect the experimental accuracy. In addition, since the light sources used in the laboratory are all polychromatic light, the condenser lens in the traditional reflective constant volume incendiary bomb high-speed camera schlieren system uses a spherical convex lens. The difference in refractive index will cause chromatic aberration, so that the outermost circle of light will have a colored aperture. When studying the laminar burning speed of a spherical flame in a constant volume bomb, it is necessary to measure the radius of the final spherical flame image projected on the high-speed camera , if chromatic aberration occurs during refraction, the radius of the spherical flame captured by the final high-speed camera through the schlieren system will deviate from the radius of the spherical flame in the real experiment in the constant volume incendiary bomb, so the final calculated spherical flame propagation The parameters will also deviate from those of a true spherically propagating flame.
发明内容Contents of the invention
本发明的目的就是要提供一种可矫正色差的反射式定容燃烧弹高速摄像纹影系统，该反射式纹影系统将传统纹影系统中的聚光镜由原来的单个凸透镜改进为由两个凸透镜和一个凹透镜组合而成的聚光镜组，该聚光镜组可以矫正复色光在经过透镜折射时产生的色差现象，从而能够更准确的获得定容燃烧弹内真实的球形火焰传播照片。The object of the present invention is to provide a reflective constant-volume incendiary bomb high-speed camera schlieren system that can correct chromatic aberration. The reflective schlieren system improves the condenser lens in the traditional schlieren system from the original single convex lens to two convex lenses. A condenser lens group combined with a concave lens, which can correct the chromatic aberration caused by the refraction of polychromatic light through the lens, so that the real spherical flame propagation photos in the constant volume incendiary bomb can be obtained more accurately.
为实现上述目的，本发明所设计的可矫正色差的反射式定容燃烧弹高速摄像纹影系统，包括沿光路依次设置的光源、光纤、聚光镜组、狭缝装置、第一反射镜、准直镜、定容燃烧弹、纹影镜、第二反射镜、刀口和高速摄像机，所述光纤的光输入端与光源连接，所述光纤的光输出端与聚光镜组连接，所述聚光镜组的焦点与准直镜经过第一反射镜反射后的焦点在狭缝装置处重合，将狭缝置于聚光镜组的焦点与准直镜经过第一反射镜反射后的焦点的重合处是为了更便于调节投射到定容弹中的光线的多少，即便于调节光源的大小，所述刀口位于纹影镜经过第二反射镜反射后的焦点处，这样布置是为了便于调节投射到高速摄像机中的光线的多少。In order to achieve the above object, the reflective constant volume incendiary bomb high-speed camera schlieren system designed by the present invention, which can correct chromatic aberration, includes a light source, an optical fiber, a condenser lens group, a slit device, a first reflector, a collimator, and Mirror, constant volume incendiary bomb, schlieren mirror, second reflector, knife edge and high-speed camera, the optical input end of the optical fiber is connected with the light source, the optical output end of the optical fiber is connected with the condenser lens group, the focus of the condenser lens group The focal point of the collimating mirror reflected by the first mirror coincides with the slit device, and the slit is placed at the coincidence of the focal point of the condenser lens group and the focal point of the collimating mirror reflected by the first mirror for easier adjustment The amount of light projected into the constant volume bomb is convenient for adjusting the size of the light source. The knife edge is located at the focal point of the schlieren mirror after being reflected by the second reflector. This arrangement is for the convenience of adjusting the light projected into the high-speed camera How many.
进一步地，所述聚光镜组由沿光路依次设置的第一凸透镜、第一凹透镜和第二凸透镜组成，所述第一凸透镜、第一凹透镜、第二凸透镜三者之间的距离可调，这样通过调节三个透镜之间的距离来适应不同的光源，有利于矫正了复色光在经过透镜后产生的色差，从而能够更准确的获得定容燃烧弹内真实的球形火焰传播照片。Further, the condenser lens group is composed of a first convex lens, a first concave lens, and a second convex lens arranged in sequence along the optical path, and the distance between the first convex lens, the first concave lens, and the second convex lens is adjustable, so that by Adjusting the distance between the three lenses to adapt to different light sources helps to correct the chromatic aberration produced by the polychromatic light after passing through the lenses, so that the real spherical flame propagation photos in the constant volume incendiary bomb can be obtained more accurately.
进一步地，所述聚光镜组安装在聚光镜组镜筒内，所述聚光镜组镜筒包括第一凸透镜镜筒、第一凹透镜镜筒和第二凸透镜镜筒；所述第一凸透镜镜筒的一端内圈设有用于嵌合第一凸透镜的第一环形凹槽，所述第一凹透镜镜筒沿轴向设有用于固定第一凹透镜的内腔，所述第二凸透镜镜筒的一端内圈设有用于嵌合第二凸透镜的第二环形凹槽；所述第一凹透镜镜筒的一端与第一凸透镜镜筒具有第一环形凹槽的一端通过螺纹连接，所述第一凹透镜镜筒的另一端与第二凸透镜镜筒具有第二环形凹槽的一端通过螺纹连接。这样，各个镜筒通过螺纹连接，通过镜筒之间旋进的程度来矫正不同情况的色差现象，避免了在调节透镜过程中手直接接触镜面弄脏镜面，同时调节镜面之间的距离也可以更稳定。重要的是，在聚光镜组中，当凸透镜镜筒完全旋进凹透镜镜筒内时，此时的凸透镜和凹透镜的距离等于0。Further, the condensing lens group is installed in the lens barrel of the condensing lens group, and the lens barrel of the condensing lens group includes a first convex lens barrel, a first concave lens barrel and a second convex lens barrel; The ring is provided with a first annular groove for fitting the first convex lens, the first concave lens barrel is provided with an inner cavity for fixing the first concave lens along the axial direction, and the inner ring of one end of the second convex lens barrel is provided with a Fitting the second annular groove of the second convex lens; one end of the first concave lens barrel is threadedly connected with the end of the first convex lens barrel having the first annular groove, and the other end of the first concave lens barrel The end having the second annular groove with the second convex lens barrel is connected by thread. In this way, the lens barrels are connected by threads, and the chromatic aberration phenomenon in different situations can be corrected by the degree of screwing in between the lens barrels, so as to avoid direct contact with the mirror surface and dirty the mirror surface during the lens adjustment process, and it is also possible to adjust the distance between the mirror surfaces more stable. What is important is that in the condenser lens group, when the convex lens barrel is fully screwed into the concave lens barrel, the distance between the convex lens and the concave lens at this time is equal to 0.
进一步地，所述第一环形凹槽、第二环形凹槽和内腔内均设有环形限位圈。这样，有利于防止透镜被镜筒划损或者压碎，且便于透镜的清洗和更换。Further, annular stop rings are provided in the first annular groove, the second annular groove and the inner cavity. In this way, it is beneficial to prevent the lens from being scratched or crushed by the lens barrel, and facilitates cleaning and replacement of the lens.
再进一步地，所述狭缝装置为孔径可调的环形狭缝装置，这样在调试纹影系统时令狭缝孔径为0，能更准确和更方便的确定聚光镜组的焦点，在实验时可以通过调节狭缝孔径的大小来确定所需要光源的大小。Furthermore, the slit device is an annular slit device with adjustable aperture, so that the slit aperture is 0 when debugging the schlieren system, and the focus of the condenser lens group can be determined more accurately and conveniently, which can be passed during the experiment. Adjust the size of the slit aperture to determine the size of the required light source.
更进一步地，所述光源为LED-光源，耗能低、不容易发热，与聚光镜组之间采用光纤传输光，光纤柔性好，使得光源方便任意移动，将光源与聚光镜组隔离开来，避免了光源发出的热量使得透镜组变形从而影响实验的效果。Furthermore, the light source is an LED-light source, which has low energy consumption and is not easy to generate heat. Optical fibers are used to transmit light between the condenser lens group. The fiber optics are flexible, so that the light source is convenient to move freely, and the light source is isolated from the condenser lens group to avoid The heat emitted by the light source deforms the lens group and affects the effect of the experiment.
与现有技术相比，本发明具有如下优点：Compared with prior art, the present invention has following advantage:
其一，本发明采用聚光镜组对现有的聚光镜进行了改进，矫正了复色光在经过聚光镜透镜后而产生的色差，从而能够更准确的获得定容燃烧弹内真实的球形火焰传播照片中球形传播火焰的半径。One, the present invention uses a condenser lens group to improve the existing condenser lens, and corrects the chromatic aberration produced by the polychromatic light after passing through the condenser lens, so that the real spherical flame propagation in the constant volume incendiary bomb can be obtained more accurately. Radius of the flame spread.
其二，本发明在聚光镜组和第一面反射镜之间安装了一个可调节孔径大小的狭缝装置，这样在调试纹影系统时就能更容易、更准确的确定聚光镜组折射后的光线的焦点位置，在实验中也能通过调节孔径的大小来方便的调节光源的大小。Second, the present invention installs a slit device with an adjustable aperture size between the condenser lens group and the first reflector, so that it is easier and more accurate to determine the refracted light rays of the condenser lens group when debugging the Schlieren system. In the experiment, the size of the light source can also be adjusted conveniently by adjusting the size of the aperture.
其三，本发明的光源采用耗能低、不易发热的LED-光源，与聚光镜组之间采用光纤传输光，光纤柔性好，使得光源方便任意移动，将光源与聚光镜组隔离开来，避免了光源发出的热量使得聚光镜组变形，使得聚光镜组矫正色差能力变弱，从而影响实验的效果。Its three, the light source of the present invention adopts the LED-light source with low energy consumption, not easy to generate heat, and adopts optical fiber to transmit light between the condenser lens group, and the optical fiber is flexible, makes the light source convenient to move arbitrarily, and the light source is isolated from the condenser lens group, avoiding The heat emitted by the light source deforms the condenser lens group, which weakens the ability of the condenser lens group to correct chromatic aberration, thus affecting the effect of the experiment.
附图说明Description of drawings
图1为一种可矫正色差的反射式定容燃烧弹高速摄像纹影系统的结构示意图；Fig. 1 is a structural schematic diagram of a reflective constant-volume incendiary bomb high-speed camera schlieren system capable of correcting chromatic aberration;
图2为图1中聚光镜组的结构示意图；Fig. 2 is the structural representation of condenser lens group in Fig. 1;
图3为图1中聚光镜组镜筒的结构示意图；Fig. 3 is the structural representation of condenser lens group lens barrel in Fig. 1;
图4为图1中狭缝装置的结构示意图；Fig. 4 is the structural representation of the slit device in Fig. 1;
其中：光源1、光纤2、聚光镜组3、狭缝装置4、第一反射镜5、准直镜6、定容燃烧弹7、纹影镜8、第二反射镜9、刀口10、高速摄像机11、第一凸透镜12.1、第二凸透镜12.2、第一凹透镜13.1、聚光镜组镜筒14、第一凸透镜镜筒14.1、第一凹透镜镜筒14.2、第二凸透镜镜筒14.3、第一环形凹槽15.1、第二环形凹槽15.2、内腔16、环形限位圈17。Among them: light source 1, optical fiber 2, condenser lens group 3, slit device 4, first mirror 5, collimator mirror 6, constant volume incendiary bomb 7, schlieren mirror 8, second mirror 9, knife edge 10, high-speed camera 11. First convex lens 12.1, second convex lens 12.2, first concave lens 13.1, condenser lens barrel 14, first convex lens barrel 14.1, first concave lens barrel 14.2, second convex lens barrel 14.3, first annular groove 15.1 , the second annular groove 15.2, the inner cavity 16, and the annular stop ring 17.
具体实施方式detailed description
下面结合附图和具体实施例对本发明作进一步的详细说明。The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
图中所示的可矫正色差的反射式定容燃烧弹高速摄像纹影系统，包括沿光路依次设置的光源1、光纤2、聚光镜组3、狭缝装置4、第一反射镜5、准直镜6、定容燃烧弹7、纹影镜8、第二反射镜9、刀口10和高速摄像机11；光源1为LED-光源，光纤2的光输入端与光源1连接，光纤2的光输出端与聚光镜组3连接，聚光镜组3的焦点与准直镜6经过第一反射镜5反射后的焦点在狭缝装置4处重合，这样可以通过调节狭缝装置4的孔径大小来调节光源大小，也能在调试纹影系统时能更方便、更准确的确定聚光镜组的焦点，刀口10位于纹影镜8经过第二反射镜9反射后的焦点处，这样可以通过调节刀口10的孔径来确定最后投射到高速摄像机11中的图像的大小。The reflective constant volume incendiary bomb high-speed camera schlieren system shown in the figure can correct chromatic aberration, including light source 1, optical fiber 2, condenser lens group 3, slit device 4, first reflector 5, collimator Mirror 6, constant volume incendiary bomb 7, schlieren mirror 8, second reflector 9, knife edge 10 and high-speed camera 11; light source 1 is an LED-light source, the optical input end of optical fiber 2 is connected with light source 1, and the optical output of optical fiber 2 The end is connected with the condenser lens group 3, and the focus of the condenser lens group 3 and the focus of the collimator mirror 6 after being reflected by the first reflector 5 coincide at the slit device 4, so that the size of the light source can be adjusted by adjusting the aperture size of the slit device 4 , and can more conveniently and accurately determine the focus of the condenser lens group when debugging the schlieren system, the knife edge 10 is located at the focus of the schlieren mirror 8 after being reflected by the second reflector 9, so that the aperture of the knife edge 10 can be adjusted to The size of the image finally projected into the high-speed camera 11 is determined.
上述技术方案中，聚光镜组3由沿光路依次设置的第一凸透镜12.1、第一凹透镜13.1和第二凸透镜12.2组成，第一凸透镜12.1、第一凹透镜13.1、第二凸透镜12.2三者之间的距离可调，这样通过调节第一凸透镜12.1、第一凹透镜13.1和第二凸透镜12.2的距离来矫正不同光源发出光线产生的色差。In the above-mentioned technical scheme, the condenser lens group 3 is made up of the first convex lens 12.1, the first concave lens 13.1 and the second convex lens 12.2 arranged sequentially along the optical path, the distance between the first convex lens 12.1, the first concave lens 13.1, and the second convex lens 12.2 It is adjustable, so that the chromatic aberration caused by the light emitted by different light sources can be corrected by adjusting the distance between the first convex lens 12.1, the first concave lens 13.1 and the second convex lens 12.2.
上述技术方案中，聚光镜组3安装在聚光镜组镜筒14内，聚光镜组镜筒14包括第一凸透镜镜筒14.1、第一凹透镜镜筒14.2和第二凸透镜镜筒14.3；第一凸透镜镜筒14.1的一端内圈设有用于嵌合第一凸透镜12.1的第一环形凹槽15.1，第一凹透镜镜筒14.2沿轴向设有用于固定第一凹透镜13.1的内腔16，第二凸透镜镜筒14.3的一端内圈设有用于嵌合第二凸透镜12.2的第二环形凹槽15.2；第一凹透镜镜筒14.2的一端与第一凸透镜镜筒14.1具有第一环形凹槽15.1的一端通过螺纹连接，第一凹透镜镜筒14.2的另一端与第二凸透镜镜筒14.3具有第二环形凹槽15.2的一端通过螺纹连接。将各个透镜安装在各自所对应的镜筒中，各个镜筒通过螺纹连接，通过镜筒之间旋进的程度来矫正不同情况的色差现象，避免了在调节透镜过程中手直接接触镜面弄脏镜面，同时调节镜面之间的距离也可以更稳定。重要的是，在聚光镜组中，当凸透镜镜筒完全旋进凹透镜镜筒内时，此时的凸透镜和凹透镜的距离等于0。In the technique scheme, the condenser lens group 3 is installed in the condenser lens group lens barrel 14, and the condenser lens group lens barrel 14 comprises the first convex lens lens barrel 14.1, the first concave lens lens barrel 14.2 and the second convex lens lens barrel 14.3; the first convex lens lens barrel 14.1 One end of the inner ring is provided with a first annular groove 15.1 for fitting the first convex lens 12.1, the first concave lens barrel 14.2 is provided with an inner cavity 16 for fixing the first concave lens 13.1 along the axial direction, and the second convex lens barrel 14.3 One end inner circle is provided with the second annular groove 15.2 that is used to fit the second convex lens 12.2; One end of the first concave lens barrel 14.2 is connected with the first end of the first convex lens barrel 14.1 with the first annular groove 15.1 by threading, the first The other end of the concave lens barrel 14.2 is threadedly connected to the end of the second convex lens barrel 14.3 having the second annular groove 15.2. Each lens is installed in its corresponding lens barrel, and each lens barrel is connected by thread, and the chromatic aberration phenomenon in different situations is corrected by the degree of screwing between the lens barrels, so as to avoid direct contact with the mirror surface and dirty the mirror surface during the lens adjustment process. , while adjusting the distance between the mirrors can also be more stable. What is important is that in the condenser lens group, when the convex lens barrel is fully screwed into the concave lens barrel, the distance between the convex lens and the concave lens at this time is equal to 0.
上述技术方案中，第一环形凹槽15.1、第二环形凹槽15.2和内腔16内均设有环形限位圈17，通过环形限位圈17固定有利于防止透镜被划损或被压碎，且便于透镜的清洗和更换。In the above technical solution, the first annular groove 15.1, the second annular groove 15.2 and the inner cavity 16 are all provided with an annular limiting ring 17, and the fixing of the annular limiting ring 17 is beneficial to prevent the lens from being scratched or crushed , and easy to clean and replace the lens.
上述技术方案中，狭缝装置4为孔径可调的环形狭缝装置，确定聚光镜组3的焦点时，将狭缝装置4的孔径调为0，当投射到狭缝装置4上的是一个明亮的光斑时，狭缝装置4所在的位置为聚光镜组3的焦平面。In the above-mentioned technical scheme, the slit device 4 is an annular slit device with adjustable aperture. When the focus of the condenser lens group 3 is determined, the aperture of the slit device 4 is adjusted to 0. When the light spot of , the position of the slit device 4 is the focal plane of the condenser lens group 3 .
本发明的工作过程：首先，光源1发出的光经过光纤2传输至聚光镜组3，调节聚光镜组3各个透镜之间的距离，使得最后投射在狭缝装置4上在光的最外圈没有彩色的光圈，再将狭缝装置4的孔径调为0，调节狭缝装置4与聚光镜组3的距离，使得狭缝装置4处的是一个明亮的光斑，此时狭缝装置4所在的面为聚光镜组3的焦平面，狭缝装置4处的是点光源；接着，点光源由聚光镜组3的焦点处发出后，经过第一面反射镜5反射后投射到准直镜6，经过准直镜6反射后的光形成混色均匀的平行光投射到定容燃烧弹7内；然后，定容燃烧弹7内被测区燃烧，形成球形火焰，流体扰动，折射率发生变化，平行光经过被测区域到达纹影镜8，经过纹影镜8反射后的光线经过第二面反射镜9反射后通过刀口10，最后在高速照相机11上成像。Working process of the present invention: at first, the light that light source 1 sends is transmitted to condenser lens group 3 through optical fiber 2, adjusts the distance between each lens of condenser lens group 3, makes finally projected on the slit device 4, there is no color in the outermost circle of light The aperture of the slit device 4 is adjusted to 0, and the distance between the slit device 4 and the condenser lens group 3 is adjusted so that the slit device 4 is a bright spot, and the surface of the slit device 4 is now On the focal plane of the condenser lens group 3, the slit device 4 is a point light source; then, after the point light source is emitted from the focal point of the condenser lens group 3, it is projected onto the collimator 6 after being reflected by the first reflector 5, and then collimated. The light reflected by the mirror 6 forms parallel light with mixed colors and is projected into the constant volume incendiary bomb 7; then, the measured area in the constant volume incendiary bomb 7 burns to form a spherical flame, the fluid is disturbed, the refractive index changes, and the parallel light passes through the incendiary bomb 7. The detection area reaches the schlieren mirror 8, and the light reflected by the schlieren mirror 8 passes through the knife edge 10 after being reflected by the second mirror 9, and finally forms an image on the high-speed camera 11.
以上所述，仅为本发明的具体实施方式，应当指出，任何熟悉本领域的技术人员在本发明所揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。The above is only a specific embodiment of the present invention. It should be pointed out that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention shall be covered by the protection scope of the present invention. within.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884194A (en) * | 2017-11-07 | 2018-04-06 | 西华大学 | A kind of big valve stroke measurement and knock-on test device and method |
| CN108732115A (en) * | 2018-05-18 | 2018-11-02 | 中国矿业大学(北京) | A kind of schlieren system for observing circular pipe flow field |
| CN109974893A (en) * | 2019-03-27 | 2019-07-05 | 东南大学 | A Method for Measuring Three-dimensional Temperature Field of Gradient Refractive Index Flame |
| CN110985256A (en) * | 2019-12-19 | 2020-04-10 | 哈尔滨工程大学 | Constant volume elastic reflector end cover and porous oil sprayer spraying test system applying same |
| CN111025663A (en) * | 2019-12-24 | 2020-04-17 | 哈尔滨工程大学 | LED array light source and porous spray test system applying same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2784956Y (en) * | 2004-12-29 | 2006-05-31 | 鸿富锦精密工业（深圳）有限公司 | Digital camera zooming lens |
| CN201173990Y (en) * | 2008-03-31 | 2008-12-31 | 首都师范大学 | A catadioptric astronomical telescope with a zoomer |
| EP2169367A1 (en) * | 2007-07-10 | 2010-03-31 | National University Corporation Gunma University | Acoustic measurement device and acoustic measurement method |
| CN102749027A (en) * | 2011-04-18 | 2012-10-24 | 陈亮嘉 | Linear color confocal microscope system |
| US20140313468A1 (en) * | 2011-11-18 | 2014-10-23 | Dic Corporation | Liquid crystal display element |
| CN104730724A (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 | Color schlieren imaging device based on optical fiber coupling LED light sources |
| CN204536663U (en) * | 2015-05-06 | 2015-08-05 | 宁波海恩光电仪器有限责任公司 | Split type schlieren system |
| CN205787406U (en) * | 2016-05-27 | 2016-12-07 | 武汉理工大学 | The reflective constant volume combustion bomb high-speed camera schlieren system of rectifiable aberration |
-
2016
- 2016-05-27 CN CN201610362854.3A patent/CN105866970A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2784956Y (en) * | 2004-12-29 | 2006-05-31 | 鸿富锦精密工业（深圳）有限公司 | Digital camera zooming lens |
| EP2169367A1 (en) * | 2007-07-10 | 2010-03-31 | National University Corporation Gunma University | Acoustic measurement device and acoustic measurement method |
| CN201173990Y (en) * | 2008-03-31 | 2008-12-31 | 首都师范大学 | A catadioptric astronomical telescope with a zoomer |
| CN102749027A (en) * | 2011-04-18 | 2012-10-24 | 陈亮嘉 | Linear color confocal microscope system |
| US20140313468A1 (en) * | 2011-11-18 | 2014-10-23 | Dic Corporation | Liquid crystal display element |
| CN104730724A (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 | Color schlieren imaging device based on optical fiber coupling LED light sources |
| CN204536663U (en) * | 2015-05-06 | 2015-08-05 | 宁波海恩光电仪器有限责任公司 | Split type schlieren system |
| CN205787406U (en) * | 2016-05-27 | 2016-12-07 | 武汉理工大学 | The reflective constant volume combustion bomb high-speed camera schlieren system of rectifiable aberration |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884194A (en) * | 2017-11-07 | 2018-04-06 | 西华大学 | A kind of big valve stroke measurement and knock-on test device and method |
| CN108732115A (en) * | 2018-05-18 | 2018-11-02 | 中国矿业大学(北京) | A kind of schlieren system for observing circular pipe flow field |
| CN108732115B (en) * | 2018-05-18 | 2023-09-29 | 中国矿业大学(北京) | Schlieren system for observing flow field in circular pipeline |
| CN109974893A (en) * | 2019-03-27 | 2019-07-05 | 东南大学 | A Method for Measuring Three-dimensional Temperature Field of Gradient Refractive Index Flame |
| CN109974893B (en) * | 2019-03-27 | 2020-11-03 | 东南大学 | Gradient refractive index flame three-dimensional temperature field measuring method |
| CN110985256A (en) * | 2019-12-19 | 2020-04-10 | 哈尔滨工程大学 | Constant volume elastic reflector end cover and porous oil sprayer spraying test system applying same |
| CN110985256B (en) * | 2019-12-19 | 2021-05-14 | 哈尔滨工程大学 | A constant volume projectile reflector end cap and a multi-hole fuel injector spray test system using the end cap |
| CN111025663A (en) * | 2019-12-24 | 2020-04-17 | 哈尔滨工程大学 | LED array light source and porous spray test system applying same |
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