Design of diffractive microlenses using general focal length function
In order to study the validity of general focal length function in designing di.ractive microlenses with long focal depth, di.ractive microlenses with di.erent f-numbers are designed using general focal length function and their focusing characteristics, such as real focal depth, real focal spot size, and di.ractive e.ciency, are investigated using electromagnetic theory and boundary element method. Investigation results indicate that general focal length function can be used to achieve long focal depth in designing di.ractive microlenses, even twice over than those of conventional di.ractive microlenses with similar parameters.
Diffractive microlenses Focusing performance Boundary element method General focal length function
Jie Lin Jian Liu Chenguang Zhao
School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin150001, CHINA School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, CHIN
国际会议
第五届仪器科学与技术国际学术会议(ISIST 2008)Fifth International Symposium on Instrmentation Science and Technology
沈阳
英文
1-7
2008-09-15（万方平台首次上网日期，不代表论文的发表时间）