TH703 2002064034非共轴深椭球面反射镜的设计原理=Design on non-coaxial ellipsoidal mirror and its applications[刊,中]/吴福田,冯书文(山东大学信息科学与工程学院.山东,济南(250100))∥光电子·激光.—2002,13(2).—210-211...TH703 2002064034非共轴深椭球面反射镜的设计原理=Design on non-coaxial ellipsoidal mirror and its applications[刊,中]/吴福田,冯书文(山东大学信息科学与工程学院.山东,济南(250100))∥光电子·激光.—2002,13(2).—210-211介绍非共轴深椭球球面的设计原理,导出了计算公式,分析了像差特性。展开更多
In order to precisely measure the diameters for obtaining the fineness of rolling raw silk, the physical features of raw silk are analyzed. By means of Fresnel principle, diffractions caused by different transparent r...In order to precisely measure the diameters for obtaining the fineness of rolling raw silk, the physical features of raw silk are analyzed. By means of Fresnel principle, diffractions caused by different transparent raw silk filaments are analyzed and simulated. Image data of raw silk filament measured by digital CMOS camera are analyzed and processed for obtaining the precise diameters of the filamerit with the relative error of less than 1%. On the assumption of appropriate elliptic cross-section of the filament, the cross-section area is calculated as the fineness of the filament. Measurement experiments are carded out. Finally, some suggestions are proposed for photoelectric measuring the fineness of raw silk.展开更多
文摘TH703 2002064034非共轴深椭球面反射镜的设计原理=Design on non-coaxial ellipsoidal mirror and its applications[刊,中]/吴福田,冯书文(山东大学信息科学与工程学院.山东,济南(250100))∥光电子·激光.—2002,13(2).—210-211介绍非共轴深椭球球面的设计原理,导出了计算公式,分析了像差特性。
文摘In order to precisely measure the diameters for obtaining the fineness of rolling raw silk, the physical features of raw silk are analyzed. By means of Fresnel principle, diffractions caused by different transparent raw silk filaments are analyzed and simulated. Image data of raw silk filament measured by digital CMOS camera are analyzed and processed for obtaining the precise diameters of the filamerit with the relative error of less than 1%. On the assumption of appropriate elliptic cross-section of the filament, the cross-section area is calculated as the fineness of the filament. Measurement experiments are carded out. Finally, some suggestions are proposed for photoelectric measuring the fineness of raw silk.