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酸溶法大截面光纤传像束制备工艺及性能研究
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摘要
酸溶法工艺是当今世界制造光纤传像束的最先进的工艺技术。用酸溶法工艺制造的光纤传像束具有单丝直径细、柔性好、数值孔径大、分辨率高等优点,因此,它在医学、工业和军工等领域具有重要的应用价值,受到国内外的高度重视。
     本文详细介绍了用酸溶法制造大截面光纤传像束的基本原理、工艺流程及技术方法,并对所研制的大截面光纤传像束的光学性能进行了测试,达到了实际使用的要求。本文采用一种先进的热熔工艺,将拉制的小截面酸溶法硬质光纤传像束截成一定长度后,经相关排列成大截面光纤传像束棒,然后经过热熔工艺和酸溶工艺,这样就制备出了酸溶法大截面光纤传像束。本实验所制备的大截面光纤传像束的直径为6.18mm,甚至还可以扩大,单丝直径为10μm,分辨率为42.5LP/mm。本文对影响酸溶法大截面光纤传像束性能的各种因素进行了分析,找出了诸多提高大截面光纤传像束性能的有效途径,最后探讨了热熔工艺对其性能的影响。
Today, the acid-leaching method is the best method to produce optical fiber image bundles in the wide world. The optical fiber image bundles produced by acid-leaching technique have the advantages of thinner diameter, good flexibility, larger numerical aperture and high-resolution etc. Therefore, they have an important application value in the medical, industrial and military areas. And it is highly regarded both at home and abroad.
    In this dissertation, the basic principle, technical procedure and technical method, of preparing larger cross-section optical fiber image bundles by acid-leaching method were introduced in detail. And related tests were made for the optical performance of the prepared image bundles. In this dissertation, the advanced founding technique was used. By cutting prepared small cross-section optical fiber image bundles into certain length and being relatively sequenced into larger cross-section optical fiber image bundles, after founding technique and acid-leaching technique, the larger cross-section optical fiber image bundles in the acid-leaching method with diameter of 6.18mm or greater, diameter of single fiber of 8μm and resolution of 42.5Lp/mm were prepared. And then the influence factors on the performance of the larger cross-section optical fiber image bundles in the acid-leaching method were analysed in this dissertation. There were many methods how to improve the performance of image bundle were introduced. Finally, the influences that founding technique on performance were discussed.
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