Achromatic diffractive liquid-crystal optics for virtual reality displays  

作　　者：Zhenyi Luo Yannanqi Li John Semmen Yi Rao Shin-Tson Wu 

机构地区：[1]College of Optics and Photonics,University of Central Florida,Orlando,FL 32816,USA [2]Goertek Electronics,5451 Great America Parkway,Suite 301,Santa Clara,CA 95054,USA

出　　处：《Light(Science & Applications)》2023年第10期2215-2227,共13页光（科学与应用)（英文版）

摘　　要：Diffractive liquid-crystal optics is a promising optical element for virtual reality(VR)and mixed reality as it provides an ultrathin formfactor and lightweight for human factors and ergonomics.However,its severe chromatic aberrations impose a big challenge for full-color display applications.In this study,we demonstrate an achromatic diffractive liquid-crystal device to overcome this longstanding chromatic aberration issue.The proposed device consists of three stacked diffractive liquid crystal optical elements with specifically designed spectral response and polarization selectivity.The concept is validated by both simulations and experiments.Our experimental results show a significant improvement in imaging performance with two types of light engines:a laser projector and an organic light-emitting diode display panel.In addition,our simulation results indicate that the lateral color shift is reduced by~100 times in comparison with conventional broadband diffractive liquid-crystal lens.Potential applications for VR-enabled metaverse,spatial computing,and digital twins that have found widespread applications in smart tourism,smart education,smart healthcare,smart manufacturing,and smart construction are foreseeable.

关 键 词：crystal OPTICS CHROMATIC 

分 类 号：O43[机械工程—光学工程]