Asatryan Karen, Presnyakov Vladimir, Tork Amir, Zohrabyan Armen, Bagramyan Aram, Galstian Tigran
LensVector inc., Mountain View, CA 94043, USA.
Opt Express. 2010 Jun 21;18(13):13981-92. doi: 10.1364/OE.18.013981.
Electrically variable gradient index liquid crystal lens is developed that uses flat uniform liquid crystal layer and electrodes. The spatial modulation of the electric field across the lens aperture is obtained by the modulation of the effective dielectric constant of an integrated doublet lens structure. The dielectric constants of two materials, composing the doublet, are chosen to be different at electrical driving frequencies, while their optical refractive indexes are the same, hiding thus the structure from the optical point of view. This "hidden layer" approach decouples the electrical and optical functions of that structure, increases significantly the performance of the lens and enables new functionalities. The technical performance and various driving schemes of the obtained lens are presented and analyzed.
开发了一种电可变梯度折射率液晶透镜，它使用平坦均匀的液晶层和电极。通过对集成双合透镜结构的有效介电常数进行调制，可实现透镜孔径上电场的空间调制。组成双合透镜的两种材料的介电常数在电驱动频率下被选择为不同，而它们的光学折射率相同，从而从光学角度隐藏了该结构。这种“隐藏层”方法使该结构的电学和光学功能解耦，显著提高了透镜的性能并实现了新功能。文中介绍并分析了所获得透镜的技术性能和各种驱动方案。
