公开(公告)号：US6122103A

公开(公告)日：2000-09-19

申请号：US337970

申请日：1999-06-22

申请人： Raymond T. Perkins ,  Douglas P. Hansen ,  Eric W. Gardner ,  James M. Thorne ,  Arthur A. Robbins

发明人： Raymond T. Perkins ,  Douglas P. Hansen ,  Eric W. Gardner ,  James M. Thorne ,  Arthur A. Robbins

IPC分类号： G02B5/18 ,  G02B5/30

CPC分类号： G02B5/3058 ,  G02B5/1809

摘要： A broadband wire grid polarizer for the visible spectrum has a plurality of elongated elements supported on a substrate. A region having a lower refractive index than the refractive index of the substrate is disposed between the elements and the substrate to reduce the longest wavelength at which resonance occurs. The region may comprise a plurality of ribs extending from the substrate and supporting the elements. The ribs may be formed by etching slots into the substrate using the elements as a mask. The region may also comprise at least one layer of dielectric film. In addition the region may be comprise ribs extending from the surface, each having at least one layer of dielectric film disposed thereon.

摘要翻译： 用于可见光谱的宽带线栅偏振器具有支撑在基板上的多个细长元件。 在元件和基板之间设置折射率低于基板的折射率的区域，以减少发生共振的最长波长。 该区域可以包括从基板延伸并支撑元件的多个肋。 肋可以通过使用元件作为掩模将狭槽蚀刻到衬底中而形成。 该区域还可以包括至少一层电介质膜。 此外，区域可以包括从表面延伸的肋，每个具有设置在其上的至少一层电介质膜。