成都工业学院 电子工程学院，四川 成都 611730
随着立体显示技术的不断发展，集成成像三维（three-dimensional，3D）显示技术受到广泛的认可，但普遍存在的视觉串扰现象严重影响其立体观看效果。为了减小集成成像中相邻图像元间的串扰光线，提高观看舒适度，本文提出了一种基于掩膜板阵列的消串扰集成成像3D显示方法。该方法通过特定参数设计的掩膜板阵列，能有效阻挡相邻图像元间的光线，从而消除视区串扰现象，且结构简单，易于制备。文中分析了集成成像3D显示视区分布关系，以及无串扰立体视区范围和立体观看视角大小，详细阐述了基于掩膜板阵列的消串扰集成成像3D显示方法的设计原理和结构，并通过实验验证了该显示方法能有效阻挡相邻图像元间的视区串扰。随着观看视角逐渐增大，串扰图像逐渐被阻挡直至全部消失，有效提升了集成成像3D显示的观看体验。
三维显示 集成成像 掩膜板阵列 串扰消除 3D display integral imaging mask array crosstalk-free
Author Affiliations
Abstract
College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
An efficient LED projector is designed for the LED flat lamp without light guide plate (LGP), in order to get high-efficiency lighting capablility and low cost of LED flat lamp. By employing refraction and total reflection, uniform intensity distribution of the emergent light and high-efficiency lighting capablility are achieved. The simulation results show that the output efficiency and intensity distribution on LED flat lamp panel depend on the distance between projector and output panel, the rotation angle of the projector and the gap between projector and LED. It performs well in both lighting efficiency and uniformity, while a distance of 5 mm, a rotation angle of 2° and a gap of 1.2 mm are used with the panel size of 240 mm×360 mm in the LED flat lamp without LGP. And 96.6% of optical uniformity is achieved.
光电子快报（英文版）
2013, 9(6): 441
华侨大学信息科学与工程学院, 福建 厦门 361021
矩形光栅1级和0级衍射效率之比对光栅的凹槽深度敏感,介绍了将其应用于聚合物光栅生物传感器的原理和光栅衍射光信号检测电路系统原理。设计了锁相放大器的信号通道滤波器,获得带宽不大于1 kHz的窄带滤波特性;利用相敏检测器(PSD)结合二阶巴特沃思低通滤波器,使等效噪声带宽限制在20 Hz以内,避免了工频干扰,实验结果表明系统输出信噪比SNR可达4 000以上。
生物传感器 锁相放大器 矩形光栅 光信号检测 biosensor lock-in amplifier rectangular grating light signals detection
