Speckle-free holography using time-multiplexing technique

实现了一种提供无斑点和阴影再现图像的全息显示技术。三维对象由对象点组成，并且对象点被分成多个对象点组，这些对象点组以时间顺序的方式显示。每个对象点编组由分开的对象点的二维(2D)阵列组成，从而不会在对象点之间发生干涉。通过在空间光调制器上显示分区板的2D阵列来生成每个对象点组。波带板的幅度分布被二维调制，以控制从物点发射的光的角强度分布，从而对重建的图像进行阴影处理。

A hologram display technique that provides speckle-free and shaded reconstructed images is realized. A three-dimensional object is composed of object points, and the object points are divided into plural object point groups that are displayed ina time-sequential manner. Each object point group consists of two-dimensional (2D) array of object points that are separated such that interference among the object points does not occur. Each object point group is generated by displaying a 2D array of zoneplates on a spatial light modulator. The amplitude distribution of the zoneplates is modulated two-dimensionally to control the angular intensity distribution of light emitted from the object points so that reconstructed images are shaded.