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    • 1. 发明申请
    • METHODS AND SYSTEMS FOR DETECTION OF ICE FORMATION ON SURFACES
    • 用于检测表面上冰块形成的方法和系统
    • WO2006086077A3
    • 2006-10-26
    • PCT/US2005045958
    • 2005-12-16
    • UNIV CITYALFANO ROBERT RWANG WUBAOSZTUL HENRYBUDANSKY YURY
    • ALFANO ROBERT RWANG WUBAOSZTUL HENRYBUDANSKY YURY
    • G08B19/02
    • B64D15/20G08B19/02
    • A system for detecting ice formation on metal, painted metal and other material surfaces can include a transparent window (104) having an exterior surface upon which ice can form; a light source (108) and optics (116) configured and arranged to illuminate the exterior surface of the window from behind the exterior surface; and a detector (122) and optics (116) configured and arranged to receive light backscattered by the exterior surface and any ice disposed on the exterior surface and determine the thickness of the ice layer. For example, the system can be used with aircraft by placing one or more windows in the wings of the aircraft. The system is used for a novel optical method for real-time on-board detection and warning of ice formation on surfaces of airplanes, unmanned aerial vehicles (UAVs), and other vehicles and stationary structures to improve their safety and operation.
    • 用于检测金属,涂漆金属和其他材料表面上的冰的系统可以包括具有外表面的透明窗口(104),冰面可以形成在其上; 光源(108)和光学器件(116),其被配置和布置成从外表面后面照亮窗户的外表面; 以及检测器(122)和光学器件(116),其被配置和布置成接收由外表面反向散射的光和设置在外表面上的任何冰,并确定冰层的厚度。 例如,该系统可以与飞机一起使用,将一个或多个窗口放置在飞行器的机翼中。 该系统用于飞机,无人机(UAV),其他车辆和固定式结构表面实时车载检测和警告冰面的新型光学方法,以提高其安全性和运行性。
    • 3. 发明申请
    • IMAGING SYSTEMS AND METHODS TO IMPROVE BACKSCATTERING IMAGING USING CIRCULAR POLARIZATION MEMORY
    • 成像系统和使用圆极化存储器改进背板成像的方法
    • WO2006116701A2
    • 2006-11-02
    • PCT/US2006016293
    • 2006-04-27
    • UNIV CITYALFANO ROBERT RNI XIAOHUI
    • ALFANO ROBERT RNI XIAOHUI
    • G01J4/00
    • G01N21/21A61B5/0066A61B5/02007A61B5/6852G01N21/4795G01N2021/216
    • An optical technique to improve the imaging of a target inside suspensions of scattering particles includes the illumination of the scattering particles with circularly polarized light. The backscattered light from the host medium preserves the helicity of incident light, while the backscattered light reflected from the target is predominated with light of opposite helicity. Based on the observed helicity difference in the emerging light that originated at the target and that backscattered from the medium, the present optical technique improves the image contrast using circular polarization. This approach makes use of polarization memory which leads to the reflected light from the target accompanied by weak diffusive backscattered light. Using the present technique, improved imaging of the artery wall is achieved and plaque composition can be assessed through a blood field associated with the artery. The scattering from the particles, such as red blood cells, in the blood is reduced due to polarization memory. The present invention can be also applied to other biomedical application, as well as image targets through adverse environmental conditions, such as fog, clouds, smoke, murky water, etc.
    • 用于改善散射颗粒悬浮液内的靶的成像的光学技术包括用圆偏振光照射散射颗粒。 来自主介质的反向散射光保留入射光的螺旋度,而从目标反射的背散射光以相反的螺旋度的光占优势。 基于在目标出现的光中观察到的螺旋度差异和从介质反向散射的现有光学技术使用圆偏振改善了图像对比度。 这种方法利用偏振存储器,其导致来自目标的反射光伴随着弱漫反射散射光。 使用本技术,实现了动脉壁的改进的成像,并且可以通过与动脉相关联的血液来评估斑块组成。 由于极化记忆,血液中的颗粒如红细胞的散射减少。 本发明还可以应用于其他生物医学应用,以及通过不利的环境条件(如雾,云,烟雾,阴暗水等)的图像目标。