研究了塑料透镜在3D 虚拟显示头盔光学系统中的应用，设计了适用于眼镜式虚拟微显示器的全塑料(聚甲基丙烯酸甲脂－PMMA)光学系统。引入反射镜来折叠光路以缩短系统长度，引入衍射面，利用其负色散性和波面任意整形特性来消除系统色差及改善波前像差。该系统重量仅为9.8 g。目视系统中需重点校正的像散和垂轴色差的最大值分别为0.31 mm 和8.8 μm，最大畸变<7%。系统最小角分辨力为0.8 mrad，全视场为32°。

The properties of plastic lens applied in 3D virtual displays are studied and a Polymethyl Methacrylate (PMMA) optical system for glasses-type virtual displays is presented. By using a reflector, the beam path of the system is folded, which leads to a compact structure. A binary optical element is introduced into the system to effectively correct the chromatic aberration and wavefront aberration. The imaging quality is improved, at the same time, system size and weight is greatly reduced. The total weigh of the optical system is just 9.8 g, the astigmatic and lateral color which need to be correct in visual system are 0.31 mm and 8.8 μm respectively, and the distortion is less than 7%. The full field of view is 32° and the angu1ar reso1ution is 0.8 mrad.