微質點影像測速儀及微質點影像擷取方法Micro Particle Image Velocimetry, and Partical Image-Capturing Method Thereof

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

12/545,581

專利證號

US 8,358,463 B2

專利獲證名稱

微質點影像測速儀及微質點影像擷取方法Micro Particle Image Velocimetry, and Partical Image-Capturing Method Thereof

專利所屬機關 (申請機關)

國立臺灣海洋大學

獲證日期

2013/06/22

技術說明

一種微質點影像測速儀，其採用發光二極體為光源並搭配環狀聚光鏡進行光路設計，輔以利用控制單元對發光二極體驅動晶片及影像擷取單元發出同步的控制訊號，發光二極體驅動晶片對發光二極體模組進行閃頻驅動。發光二極體發出的光導向該環狀聚光鏡，該環狀聚光鏡使光聚焦於顯微鏡之物鏡下的微流體樣本，使得僅有該微流體樣本的散射光進入物鏡，因此影像擷取單元可擷取到暗視野(Dark field)、背景雜訊極低的優質影像。應用R,G,B 的LED光源照明，配合LED的高閃頻特性，更可提高測速動態範圍‧ According to an aspect of the present invention, a particle image-capturing method comprises controlling a light-emitting diode unit to emit light to illuminate a fluid specimen through a condenser, wherein particles in the fluid specimen scatter the light, and controlling an image-capturing unit to capture images of the scattered light through a microscope. A micro particle image velocimetry (micro-PIV) comprises a condenser, a light source, a microscope, and an image-capturing unit. The light source includes a light-emiting LED unit that emits light so as to illuminate a fluid specimen through the condenser, wherein particles in the fluid specimen scatter the light. The image-capturing unit captures images of the scattered light through an object lens of the microscope. The analyzer unit is coupled to the image-capturing unit, measures a velocity field of the fluid specimen based on the images captured by the image-capturing unit, and presents the velocity field measured thereby.

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