中文摘要：

随着虚拟现实与增强现实技术的快速发展, 近年来越来越多的虚拟现实与增强现实相关应用走入大众视野.在众多显示设备中, 头盔显示器以其高沉浸感、实时交互性及其广阔的应用领域在虚拟现实与增强现实技术中占据重要地位. 文中介绍了头盔显示器光学系统成像原理; 分析总结了从不同的技术角度解决的传统头盔显示器体积与质量大、调焦与辐辏不匹配等问题的3 种新型头盔显示器, 包括自由曲面头盔显示器、波导型头盔显示器和真实立体感头盔显示器, 阐述了用户佩戴头盔显示器的视疲劳主观和客观评测方法; 最后对头盔显示器的未来发展趋势进行了展望.

英文摘要：

With the rapid development of virtual reality (VR) and augmented reality (AR), more and more VR and AR related applications come into the views of the general public. Among various displays, the head mounted displays (HMD) play an important role due to its high immersion, real-time interactive and wide applications. This paper introduces the imaging principle of the optical system on the traditional HMD, and summarizes three kinds of novel designs of HMD, which includes the free-form optics based HMD, the waveguide based HMD and the real stereoscopic HMD. All these HMDs can solve such problems as large volume and weight, the conflicts between the accommodation and convergence of the traditional head mounted displays with different approaches. This paper also presents the subjective and objective evaluation methods of HMD as well as its future development trends.