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1. 发明授权

US5325458A Monolithic hollow waveguide and method and apparatus for making the same 失效
标题翻译：单片空心波导及其制造方法和装置
公开(公告)号：US5325458A
公开(公告)日：1994-06-28
申请号：US832708
申请日：1992-02-07
申请人： Clifford E. Morrow , Otto Gregory , Poonam Bhardwag , Gong-En Gu , Mary B. Bauman
发明人： Clifford E. Morrow , Otto Gregory , Poonam Bhardwag , Gong-En Gu , Mary B. Bauman
IPC分类号： F16L11/14 , G02B6/032 , G02B6/20
CPC分类号： G02B6/032 , F16L11/14
摘要： The present application discloses a method and apparatus for making a low cost and highly efficient hollow waveguide for transmitting electromagnetic radiation. The waveguide is made from a solid substrate monolithic hollow tube with a reflectivity enhancing dielectric film formed directly over the inner surface. The film can be formed by native chemical reactions, with the material of the monolithic, hollow tube. The present application also discloses a method of polishing and cleaning the inner surface of the hollow tube.One of the problems identified with the hollow metallic waveguide has been the poor surface finish on the inner wall of the hollow tube which results from the processes used to fabricate the metallic tube into final form. The coated reflectivity enhancing dielectric films more or less duplicate the surface roughness in the as formed tube thus seriously affecting the performance of the waveguide especially at the shorter wavelengths. The interior surface of the as received metal tubes can be significantly improved by chemically polishing and cleaning the tube and thereby improving the transmission characteristic of the wave guides for both infrared and visible wavelengths.
摘要翻译：本申请公开了一种用于制造用于传输电磁辐射的低成本和高效空心波导的方法和装置。波导由固体基板单片中空管制成，其中反射增强电介质膜直接形成在内表面上。该膜可以通过天然化学反应与单片中空管的材料形成。本申请还公开了一种抛光和清洁中空管内表面的方法。用中空金属波导识别的问题之一是中空管的内壁上的表面光洁度差，这是由用于将金属管制成最终形式的工艺产生的。涂覆的反射增强电介质膜或多或少地复制成形管中的表面粗糙度，从而严重影响波导的性能，特别是在较短波长处。作为接收的金属管的内表面可以通过化学抛光和清洁管而显着改善，从而提高波导的红外和可见波长的传输特性。

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