高速摄影激光照明技术取得新进展

畅里华; 王旭; 温伟峰; 宋振飞; 汪伟; 冉茂杰; 何徽; 高鹏

doi:10.11884/HPLPB201830.180042

高速摄影激光照明技术取得新进展

doi: 10.11884/HPLPB201830.180042

中国工程物理研究院流体物理研究所, 四川绵阳 621900

基金项目:

国防科工局技术基础项目 JSJL2016208A011

国家重大科学仪器设备开发专项 2011YQ130019

详细信息

作者简介:
畅里华(1974—)，女，高级工程师，主要从事高速摄影技术研究; clhwwdd@163.com

通讯作者:
温伟峰(1982—)，男，硕士，副研究员，主要从事高速摄影技术及超快光电子学方面研究; pleague@126.com

中图分类号: O439
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出版历程
- 收稿日期: 2018-01-29
- 修回日期: 2018-02-13
- 刊出日期: 2018-04-15

New development of laser illumination technology for high-speed photography

Institute of Fluid Physics, CAEP, P. O. Box 919-109, Mianyang 621900, China

摘要

摘要: 采用衍射型光束匀化器件及多模光纤传光和透镜耦合扩束方法，有效抑制了激光散斑与干涉条纹，解决了大视场平行光束照明时拍摄物体在成像面上的渐晕问题，实现了ϕ300 mm大口径视场下激光均匀照明和目标的清晰成像，并成功用于柱面内爆压缩、空间碎片等精密物理实验研究中。高速摄影技术与激光照明的成功结合，可有效抑制精密物理实验中强烈自发光导致过度曝光从而大大影响成像质量的问题，获得的物理过程边界形貌更加清晰，判读更精确。
- 高速摄影 /
- 激光照明 /
- 散斑 /
- 干涉条纹 /
- 均匀
Abstract: In this paper, laser speckle and interference fringe were effectively restrained by the use of diffractive optical element for smoothing beam, multimode fiber and the lens coupling expander technology. The vignette phenomenon on the imaging plane was eliminated while taking the picture of objective illuminated by wide-view parallel-light. Based on this research, the ϕ300 mm wide-view laser uniform illumination and the clear imaging of objective were realized, and it was successfully used in precise physical experiments of cylindrical implosion compression, space junk and so on. The successful combination of high-speed photography technology and laser illumination will effectively restrain the excessive exposure caused by intensive self-illumination in precise physical experiments, and improve the quality of imaging. Consequently, the image boundary of physical phenomenon will be clearer and easier to interprete and recognize.
- high-speed photography /
- laser illumination /
- speckle /
- interference fringe /
- uniform

HTML全文

图 1 原激光光斑

Figure 1. Previous laser speckle

下载: 全尺寸图片幻灯片

图 2 改善后激光光斑

Figure 2. Improved laser speckle

下载: 全尺寸图片幻灯片

图 3 氙灯照明弹丸高速撞靶过程

Figure 3. Image of high-speed projectile impacting on target by xenon lamp illuminated

下载: 全尺寸图片幻灯片

图 4 激光照明弹丸高速撞靶过程

Figure 4. Image of high-speed projectile impacting on target by laser illuminated

下载: 全尺寸图片幻灯片

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