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    • 3. 发明申请
    • SYSTEM AND METHOD FOR DYNAMIC CONTACT ANGLE MEASUREMENT
    • 用于动态接触角测量的系统和方法
    • WO2005008220A1
    • 2005-01-27
    • PCT/US2004/022360
    • 2004-07-14
    • ALCON, INC.KETELSON, Howard AllenMEADOWS, David L.
    • KETELSON, Howard AllenMEADOWS, David L.
    • G01N13/02
    • G01N13/02G01N2013/0208G01N2013/0241
    • A system and method for dynamic contact angle measurement on a curved material are disclosed. One embodiment of the method comprises: initializing a video-based contact angle measuring apparatus; preparing the curved material for contact angle measurement; performing a sessile drop procedure to deposit a drop of liquid on the curved material; capturing an image of the drop on the curved material at a preset time; determining a drop-curved material interface on the image; determining a drop profile on the image; and calculating a set of dynamic contact angles based on the drop-curved material interface and the drop profile. The contact angle measuring apparatus can further comprise a processor for executing software instructions, a software module comprising processor-executable software instructions for performing at least some of the steps of the method and a memory, operably coupled to the processor, for storing the processor-executable software instructions. Further, the steps of determining the drop-curved material interface, determining the drop profile, capturing an image, initializing the contact angle-measuring apparatus and calculating the set of dynamic contact angles can each be at least partially performed via software running on the processor. The contact angle measuring apparatus can also include a camera and a digital frame-grabber for capturing an image. As a further aspect of the present invention, the curved material can be a hydrogel contact lens either mounted on an external sample stage or in a patient's eye for in vivo contact angle measurements.
    • 公开了一种用于弯曲材料上的动态接触角测量的系统和方法。 该方法的一个实施例包括:初始化基于视频的接触角测量装置; 准备用于接触角测量的弯曲材料; 执行固定滴落程序以将一滴液体沉积在弯曲的材料上; 在预设时间捕获弯曲材料上的液滴的图像; 确定图像上的下落曲线材料界面; 确定图像上的丢弃轮廓; 并且基于液滴曲线材料界面和液滴轮廓计算一组动态接触角。 接触角测量装置还可以包括用于执行软件指令的处理器,软件模块,包括用于执行可操作地耦合到处理器的方法和存储器的至少一些步骤的处理器可执行软件指令,用于存储处理器 - 可执行软件说明。 此外,可以通过在处理器上运行的软件至少部分地执行确定落下曲线材料界面,确定液滴轮廓,拍摄图像,初始化接触角测量装置和计算动态接触角集合的步骤 。 接触角测量装置还可以包括用于捕获图像的相机和数字帧抓取器。 作为本发明的另一方面,弯曲材料可以是安装在外部样品台上或患者眼睛中的水凝胶隐形眼镜,用于体内接触角测量。