Electrically-Activated, Liquid-Crystal Filled, Holographic Diffractive Structure for Wavelength Control

这里描述的概念是一种先进的全息成像技术。 衍射结构（HDS），用于控制 波长级 一堆电控液体- 晶体填充的衍射光栅将提供一种重量轻， 透明面板，当与孔接触时， 能够非常有效地将阳光集中到一个稳定的 光导或光纤装置中心的区域。 它 应能够选择性地仅使格栅发挥作用 适合于特定的太阳角度，而不是其他， 施加电场（产生“智能光栅”）。 一 一系列这样的集中器将因此显示活跃的太阳能 跟踪没有与移动相关联的缺点 机械零件 这种设备的一个非常有前途的应用的例子是 全息收集和传输 阳光照射到多层建筑的“核心”区域。 代以 用于电灯太阳光将节省大量的太阳光， 能源，特别是在高峰负荷条件下，而在 同时为建筑提供高质量的照明， 住户。 可以预期的是，所描述的控制装置 在此，可以在美国提供令人敬畏的节能。 到2000年，建筑业。

The concept described herein is an advanced holographic diffractive structure (HDS) for the control of light at the wavelength level. A stack of electrically controllable, liquid- crystal filled diffraction gratings would present a lightweight, clear panel, that, when placed in contact with an aperture shall be able to concentrate sunlight very efficiently into a stable area in the center of a light guide or fiber optic device. It shall be possible to selectively bring into play only the grating appropriate for a particular sun angle and none other, by applying an electric field (creating a "smart grating"). A series of such concentrators will thus display active solar tracking without the disadvantages associated with moving mechanical parts. An example of a highly promising application of such a device is described within--holographic collection and transport of sunlight to a multi-story building's "core" area. Substituting sunlight for electric light will conserve a significant quantity of energy, particularly during peak load conditions, while at the same time delivering high quality illumination to the building's occupants. It is anticipated that the control device described herein, could provide formidable energy savings in the U.S. building sector by the year 2000.