广角70°视场折/衍混杂目镜设计

Design of Refractive-diffractive Eyepieces with 70°Wide-angle Field of View

以传统 4片 70°视场蔡司目镜为基础 ,用折 /衍混杂单透镜代替系统中的双胶合透镜 ,给出了衍射面分别位于单透镜两面不同位置时的折 /衍混杂目镜系统。结果表明 ,所设计的折 /衍混杂系统优于传统蔡司目镜 ;垂轴色差降低了 1个数量级 ,像散降低了 34% ,垂轴像差对于 0°、4 9°和 70°视场分别降低了30 %、16 %和 2 0 % ;系统的重量和尺寸有了很大的改善 ,分别降低了 5 7%和 10 % ,该折 /衍混杂目镜满足现代化广角

Basing on conventional 4 elements 70° field of view wide angle Zeiss eyepiece,we have designed two hybrid refractive diffractive eyepieces by replacing the doublet of the eyepiece with hybrid refractive diffractive singlet.It has been shown that the performance of the desighed hybrid eyepiece is much better than the conventional Zeiss eyepiece.The lateral color reduces by one order in magnitude,the astigmatism reduces by 34 %,and the transverse aberration reduces by 30 %,16 % and 20 % for 0°,49° and 70° field of views.They decrease by 57 % and 10 % respectively,as compared with Zeiss eyepiece.The designed refractive diffractive eyepiece meets the general requirements of modern 70° wide angle field of view head mounted displays.