轻小型头戴显示器的光学设计

Optical design of light and small head mounted display

目前头戴显示器体积大、重量大、视场角小,为了满足用户对轻小型头戴显示器的使用需求,以冉斯登目镜为初始结构,采用ZEMAX软件对其优化,并进行了像质评价和公差分析。结果表明,双目系统中的每个通道仅使用两片透镜,光学系统的最大视场角为80°,总长为54.24mm,最大畸变小于4.7%,两片透镜重量小于11.5g,与相关研究比较,增加了视场角和像素数量,减小了体积,提高了调制传递函数。该头戴显示器具有一定的市场前景,能够为轻小型头戴显示器的光学设计提供参考。

Aiming at the problems of the current head-mounted display with large volume,large weight,and small field of view,in order to meet the user’s demand for light and small head-mounted displays,the Ranston eyepiece was used as the initial structure,and then was optimized by using ZEMAX software.Image quality evaluation and tolerance analysis were then carried out.The result shows that each channel in the binocular system uses only two lenses,the maximum field of view of the optical structure is 80°,the total length is 54.24mm,the maximum distortion is less than 4.7%,the weight of the two lenses is less than 11.5g.Compared with related research,the field angle and the number of pixels are increased,the volume is reduced,and the modulation transfer function is improved.The head-mounted display has certain market prospects,and can provide a reference for the optical design of the light and small head-mounted display.