Abstract:
A method for modifying the refractive index of an optical, polymeric material. The method comprises irradiating select regions of the optical, polymeric material with a focused, visible or near-IR laser having a pulse energy from 0.05 nJ to 1000 nJ. The irradiation results in the formation of refractive optical structures, which exhibit little or no scattering loss. The method can he used to modify the refractive index of an intraocular lens following the surgical implantation of the intraocular lens in a human eye. The invention is also directed to an optical device comprising refractive optical structures, which exhibit little or no scattering loss and are characterized by a positive change in refractive index.
Abstract:
A light guide apparatus includes a light guide layer further including light injection elements and respective light bypass elements disposed optically upstream of the light injection elements. The light injection elements and/or the bypass elements can take the form of injection facets (air prisms), surface diffraction elements, volume diffraction elements, and gradient index profiles. A light collection and concentration system comprises a single light guide apparatus, a light-transmitting medium layer disposed immediately adjacent the single light guide apparatus, and a primary light concentrator component disposed adjacent the light-transmitting medium layer, including a plurality of primary concentrator elements each of which is in optical registration with a respective one of the light injection elements of the single light guide apparatus.
Abstract:
A light guide includes a light guide layer having a transversely oriented side-end surface that forms a primary output aperture (exit) for light traveling in a forward propagation direction out of the end surface of the light guide (for, e.g., CPV applications) and, which forms a primary input aperture (entrance) for light traveling in a rearward propagation direction into the end surface of the light guide (for, e.g., illuminator applications), and a first plurality of light injection elements stepped (staggered) in a forward light propagation direction in a first plane along lines parallel to the side-end surface or clocked (tilted) about a y-axis in a z-axis-light propagation direction in a respective first plane, wherein the light injection elements are disposed along parallel lines normal to the side-end surface. The light guide component may further comprise at least a second plurality of light injection elements stepped in at least second plane. A light guide system includes a component light guide, a lenslet array disposed adjacent a top surface of the light guide, and a light-transmitting, TIR medium layer disposed immediately adjacent at least one of the top and bottom surfaces of the light guide.
Abstract in simplified Chinese:MRI扫瞄一般而言在一切片内具有较切片之间为高的分辨率。为改进分辨率,以不同的方向,最好为正交的方向来做MRI扫瞄。借由使其梯度问的相关性最大化来记录扫瞄,然后将之混合以形成一高分辨率影像。可使用多个接收线圈。当影像为多频谱时,借由按照影像对比之顺序所做的频谱频带之转换,并使用具有最高对比之转换过的频谱频带来减少频谱频带之数目。
Simplified title:使用悬浮于流体主体之复合层薄片系统以获致与角度有关之光学效果之可电气寻址光学设备 ELECTRICALLY ADDRESSABLE OPTICAL DEVICES USING A SYSTEM OF COMPOSITE LAYERED FLAKES SUSPENDED IN A FLUID HOST TO OBTAIN ANGULARLY DEPENDENT OPTICAL EFFECTS
Abstract in simplified Chinese:具有悬浮在流体主体中,并受到电场作用之复数层不同材料之复合或分层薄片,在施加电场中根据薄片之角度或取向产生光学效果,其中该等复数层不同材料可以为介电材料、导电材料或液晶材料。光学效果取决于层之组分及厚度,产生反射、干涉、加色及/或减色效果。还可以选择分层薄片之组分,以增强和/或改变薄片之介电性质,从而还增强和/或改变薄片在电场中之动作。该等设备可以用作主动式电光显示器、偏振片、滤波器、光调制器,以及希望控制偏振、反射和透射光学性质之任何场所。