摘要
针对大数值孔径衍射透镜制作难、衍射效率低的问题，探讨了用位相匹配原理对元件结构参数优化设计的方法，研制出８台阶二元衍射位相匹配透镜列阵，达到了预期的效果。采用该方法设计的大数值孔径红外锗透镜作为光聚能器，应用在提高红外探测器性能的实验中。
In view of the difficulty in making diffraction lens with large numerical aperture and its low diffraction efficiency,a design method for optimizing the structural parameters of the element with phase matching principle is investigated.A binary diffraction phase matching lens array with 8 steps is developed and the expected result has been attained.Large NA infrared germanium lens designed with this method has been used as light condenser and it has been applied to the experiments for improving the performances of IR detector.
出处
《光电工程》
EI
CAS
CSCD
1998年第6期41-45,共5页
Opto-Electronic Engineering
关键词
数值孔径
微型透镜
衍射效率
二元光学
Numerical aperture,Micro lenses,Diffraction efficiency,Binary optics.
