Background Oriented Schlieren: BOS Imaging

For the visualization of gas motion based on local refractive index variations Background Oriented Schlieren (BOS, also known as Synthetic Schlieren) is a simple and cost-effective alternative to laser imaging methods, because it doesn’t need any complex illumination device like a laser needed for laser imaging, and it works without seeding the flow.

BOS is a line-of-sight imaging technique and measures locally the density gradient as an integrated value over the line-of-sight. In practice, only a random dot pattern in the background of the flow is imaged with a high resolution camera before and during the test. By comparing the two pictures (or more precisely correlating the two patterns similar to the image correlation in PIV) the local displacement of the background pattern can be used to provide lateral information on path-integrated refractive index variations.

BOS

Imaging in Transparent Media

simple flow visualization technique without laser and flow seeding
advanced image correlation technique applied on background target
BOS software module in DaVis for quantitative density (temperature)
imaging in 2D and axisymmetric flows

3D temperature field over a cup of coffee

Tomographic (Tomo) BOS Imaging

LaVision’s Tomo-BOS imaging systems measure quantitatively density or temperature fields in 3D using multiple camera BOS projections. This 3D imaging technique requires an accurate geometrical calibration of the multi-camera system and an iterative tomographic reconstruction algorithm.

Tomo-BOS

for 3D Flow Imaging

instantaneous 3D temperature (density) fields
flexible multi-camera setups
high-speed tomographic BOS imaging for time-resolved measurements

Product Information

Digital Schlieren Imaging

FluidMaster Tomographic BOS

Tomographic BOS

背景来源纹影(BOS)温度成像测量系统信息由北京欧兰科技发展有限公司为您提供，如您想了解更多关于背景来源纹影(BOS)温度成像测量系统报价、型号、参数等信息，欢迎来电或留言咨询。除供应背景来源纹影(BOS)温度成像测量系统外，北京欧兰科技发展有限公司还可为您提供德国LaVision PIV/PLIF粒子成像测速场仪、PLIF平面激光诱导荧光火焰燃烧检测系统等产品，公司有专业的客户服务团队，是您值得信赖的合作伙伴。

型号：	FluidMaster-BOS
产地：	德国
品牌：	LaVision GmbH
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