Gradation representation method using a binary-weighted computer-generated hologram based on pulse-width modulation  

作　　者：Masato Fujiwara Naoki Takada Hiromitsu Araki Chun Wei Ooi Shohei Ikawa Yuki Maeda Hiroaki Niwase Takashi Kakue Tomoyoshi Shimobaba Tomoyoshi Ito 

机构地区：[1]Graduate School of Integrated Arts and Sciences, Kochi University, Kochi, 780-8520, Japan [2]Science Department, Natural Sciences Cluster, Research and Education Faculty, Kochi University, Kochi 780-8520, Japan [3]Faculty of Science, Kochi University, Kochi 780-8520, Japan [4]Graduate School of Engineering, Chiba University, Chiba, 263-8522, Japan

出　　处：《Chinese Optics Letters》2017年第6期46-49,共4页中国光学快报（英文版）

基　　金：supported by the Japan Society for the Promotion of Science through a Grantin-Aid for Scientific Research(C);15K00153;a Grant-in-Aid for Scientific Research(A);25240015

摘　　要：We propose a simple gradation representation method using a binary-weighted computer-generated hologram（CGH） to be displayed on a high-speed spatial light modulator that can be controlled by the pulse-width modulation technique. The proposed method uses multiple bit planes comprising binary-weighted CGHs with various pulse widths. The object points of a three-dimensional（3D） object are assigned to multiple bit planes according to their gray levels. The bit planes are sequentially displayed in a time-division-multiplexed manner.Consequently, the proposed method realizes a gradation representation of a reconstructed 3D object.We propose a simple gradation representation method using a binary-weighted computer-generated hologram（CGH） to be displayed on a high-speed spatial light modulator that can be controlled by the pulse-width modulation technique. The proposed method uses multiple bit planes comprising binary-weighted CGHs with various pulse widths. The object points of a three-dimensional（3D） object are assigned to multiple bit planes according to their gray levels. The bit planes are sequentially displayed in a time-division-multiplexed manner.Consequently, the proposed method realizes a gradation representation of a reconstructed 3D object.

关 键 词：reconstructed displayed gradation modulator sequentially colors manner assigned camera calculating 

分 类 号：O438.1[机械工程—光学工程]