计算机制相位彩虹全息近眼显示  

Computer Generated Phase-only Rainbow Holographic Near-Eye Display

作　　者：杨鑫 焦述铭 宋强 马国斌 Yang Xin;Jiao Shuming;Song Qiang;Ma Guobin(School of Instrumentation and Optoelectronic Engineering,Beihang University,Beijing 100191,China;Peng Cheng Laboratory,Shenzhen,Guangdong518055,China;Lochn Optics-Micro/Nano Photonics Research Center,Shenzhen,Guangdong518055,China)

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191 [2]鹏城实验室,广东深圳518055 [3]珑璟光电微纳光学研究中心,广东深圳518000

出　　处：《光学学报》2021年第22期49-55,共7页Acta Optica Sinica

基　　金：国家自然科学基金(62005006)。

摘　　要：基于现有的相位空间光调制器,提出并实现了计算机制相位彩虹全息近眼显示。指出带限条件下物光在全息面上相位分布的计算及高频闪耀光栅纵向色散的控制是实现相位彩虹全息的关键要素。在计算相位彩虹全息图时,首先利用带限条件下的角谱衍射算法获取全息面上物光的复振幅分布,并利用双向误差扩散算法将复振幅分布编码为相位分布。然后,对参考光对应的高频闪耀光栅的相位进行编码,得到计算机制相位彩虹全息图。最后,设计了包含白色点光源、准直透镜、空间光调制器、4f滤波系统及目镜的全息彩色近眼显示系统,并通过光学再现获得了相位彩虹全息近眼显示效果,证明了所提方法的有效性。Based on the existing phase-only spatial light modulator(SLM),a computer generated phase-only rainbow holographic near-eye display is proposed and realized.It is pointed out that the calculation of the phase distribution of the object light on the holographic plane under the band-limited condition and the control of longitudinal dispersion by high-frequency blazed grating are the key elements to realize the phase-only rainbow holography.When calculating the phase-only rainbow hologram,the complex amplitude distribution of the object light on the holographic plane is obtained by using the angular spectrum diffraction algorithm under the band-limited condition,and the complex amplitude distribution is encoded as the phase distribution by the bidirectional error diffusion algorithm first.Then,the phase of high-frequency blazed grating corresponding to the reference light is encoded,and the computer generated phase-only rainbow hologram is obtained.Finally,a holographic near-eye color display system including a white light point source,a collimating lens,a spatial light modulator,a 4f filtering system and an eyepiece is designed and the phase rainbow holographic near-eye display effect is obtained by optical reconstruction,which proves the effectiveness of the proposed method.

关 键 词：全息 全息显示 近眼显示 相位彩虹全息 彩色全息显示 

分 类 号：O438.1[机械工程—光学工程]