首页> 外文会议>Nonimaging optics: Efficient design for illumination and solar concentration VIII >Angular dependence of surface-relief gratings for solar and lighting applications
【24h】

Angular dependence of surface-relief gratings for solar and lighting applications

机译:用于太阳能和照明应用的表面浮雕光栅的角度依赖性

获取原文
获取原文并翻译 | 示例

摘要

Transmission gratings that combine a large diffraction angle with a high diffraction efficiency and low angular and wavelength dispersion can be used to concentrate sunlight in a light guide and for lighting applications. Surface-relief gratings with sub-wavelength grating periods can have these properties. In this paper we study their diffraction efficiency for general conical angles of incidence. We show the presence of regions in the space of incident angles where light is efficiently coupled into or out of total internal reflection. It is demonstrated how this distribution of the diffraction efficiency over angular space can be adjusted by changing the grating geometry. Finally, these properties are qualitatively verified using holographically produced surface relief gratings.
机译:结合了大衍射角和高衍射效率以及低角度和波长色散的透射光栅可用于将阳光聚集在光导和照明应用中。具有亚波长光栅周期的浮雕光栅可以具有这些特性。在本文中,我们研究了它们对于一般圆锥形入射角的衍射效率。我们显示了入射角空间中存在的区域,在这些区域中,光被有效地耦合进全内反射或从中反射出来。已经证明了如何通过改变光栅的几何形状来调节衍射效率在角空间上的分布。最后,使用全息产生的表面起伏光栅定性地验证了这些性质。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号