液晶与显示2018，Vol.33Issue(3)：245-253,9.DOI:10.3788/YJYXS20183303.0245
用于智能显示的相位型计算全息图的设计
Design of phase type computer-generated-hologram for intelligent display
摘要
Abstract
The design method of the pure-phase type computer-generated-hologram for intelligent dis-play based on the principle of the kinoform has been introduced.On this basis,taking snowflake pat-tern and reticle pattern as examples,experimental samples of holography elements was developed, and holographic reconstruction is completed, real-time reconstruction images can be used for intelligent display.Method:The reconstruction images could be obtained by controlling the height and width of micro-structures on the surface of recording medium material with a certain refractive index. The iterative Fourier transform algorithm has been used to calculate the phase structure of the pure-phase type computer-generated-hologram.At the same time,the quantitative mathematical model has been given,and 4 steps relief structure have been obtained.T he sizes of the pure-phase type computer-generated-hologram has been set to be 6 mm×6 mm,the working wavelength is 650 nm, the minimum feature size of the diffractive structures is 8 μm.The theoretical calculation result and the reconstruction simulation result show that the design method of the pure-phase type computer-generated-hologram for intelligent display is feasible in the case of un-considering fabrication errors. This method can also be used to design the pure-phase type computer-generated-hologram of other specific patterns.It can also be used to design diffractive optical elements for beam shaping,such as the optical beam shaping and optical beam homogenizer of the off-axis illumination.T he pure-phase computer-generated-hologram is illuminated by a plane wave for intelligent displays,the high diffrac-tion efficiency could be obtained because a single diffraction image could be reconstructed without other diffraction images.The positive and negative of phase of the hologram is changed in this design, the hologram is illuminated by a plane wave at a specific angle, which can be used for holographic sight关键词
智能显示/纯相位型计算全息图/量化相位结构/相息图/衍射光学元件Key words
intelligent display/pure-phase computer-generated-hologram/quantitative phase structure/kinoform/diffractive optical element分类
数理科学引用本文复制引用
张梦妮,张锦,蒋世磊,孙国斌,弥谦,王震,张强,武耀霞..用于智能显示的相位型计算全息图的设计[J].液晶与显示,2018,33(3):245-253,9.基金项目
陕西省教育厅重点实验室科研计划(No.13JS038) （No.13JS038）
陕西省科技厅重点实验室项目(No.2013SZS14-P01) （No.2013SZS14-P01）
西安工业大学校长科研基金(No.XAGDXJJ1303)资助Supported by Key Laboratory Research Plan of Education Department of Shaanxi Provincial Government(No.13JS038) （No.XAGDXJJ1303）
Key Laboratory Project of Shaanxi Provincial Department of Science and Technology(No.2013SZS14-P01) （No.2013SZS14-P01）
President Research Fund of Xi＇an Technological University(No.XAGDXJJ1303) （No.XAGDXJJ1303）
