基于光转向的高动态范围激光显示  

High Dynamic Range Laser Display Based on Light Steering

作　　者：赵鹏[1,2] 余新 杨亚涛 Zhao Peng;Yu Xin;Yang Yatao(College of Electronics and Information Engineering,Shenzhen University,Shenzhen,Guangdong 518060,China;Appotronics Corporation Ltd.,Shenzhen University,Shenzhen,Guangdong 518060,China)

机构地区：[1]深圳大学电子与信息工程学院,广东深圳518060 [2]深圳光峰科技股份有限公司,广东深圳518060

出　　处：《激光与光电子学进展》2022年第5期163-170,共8页Laser & Optoelectronics Progress

基　　金：国家重点研发计划(2018YFB0406800);广东省重点领域研发计划(2019B010926001);广东省省级科技计划(2018B030323014)。

摘　　要：广色域(WCG)和高动态范围(HDR)显示能够真实地还原现实场景,是高性能显示力求实现的方向。基于相位调制的光转向器件可以改变光场的能量分布,采用了光转向技术的激光显示系统兼具WCG和HDR特性,具有优良的显示效果。在影院、投影增强现实等对显示效果要求高的使用场景中有广泛的应用前景。动态范围的拓展能力依赖于光转向照明调制的算法,基于此,提出了一种新的光转向调制算法,利用自由曲面透镜对光束的偏折和聚散对光转向器件进行算法建模,采用迭代算法实现相位分布的计算,并使用线性化、离散傅里叶变换等方法提高算法速度。仿真结果表明,通过光转向调制,所提算法能够10倍地提高画面的最高亮度,实现10倍以上的动态范围提升。Wide color gamut(WCG)and high dynamic range(HDR)display can truly replicate a real scene in a highperformance display.Light steering device based on phase modulation can change the energy distribution of a light field;thus,remarkable display performance can be realized using WCG and HDR in a display system comprising laser source and light steering technology.Light steering technology can be applied in situations demanding high performance,including cinema display and projection augmented reality.The ability to expand the dynamic range depends on the light steering modulation algorithm.Based on this,a new light steering modulation algorithm is proposed.A free-form surface lens is used to model the light steering device,the iterative algorithm is used to calculate the phase distribution,and the linearization and discrete Fourier transform are used to improve the algorithm speed.Simulation results show that the proposed algorithm can improve the maximum brightness of a picture by 10-fold and achieve more than 10 times the dynamic range via light steering modulation.

关 键 词：测量 高动态范围 激光显示 光转向 相位空间光调制器 

分 类 号：O439[机械工程—光学工程]