完全相干光系统对两点分辨率成像研究  

Imaging studies of two-point resolution by a fully coherent optical system

作　　者：刘文轩 胡小英[1] LIU Wenxuan;HU Xiaoying(School of Optoelectronic Engineering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]西安工业大学光电工程学院,西安710021

出　　处：《自动化与仪器仪表》2022年第11期233-236,共4页Automation & Instrumentation

基　　金：国防基础研究项目(A0920110019);陕西省重点实验室开放基金(ZSKJ201301);总装先进制造(51318020303)。

摘　　要：对于两点分辨率问题,目前已有比较深入研究,其中最著名的理论是瑞利判据,但该判据只针对理想状态下完全非相干研究,对于完全相干这种极限情况研究却极少。根据两点分辨率原理,建立两物点间距与像面光强的数学模型,通过仿真结果给出完全相干光照明条件下两点光源成像的一般规律:在完全相干光照明条件下,随着物点间距增大,两点分辨能力增强。最后通过理论像面光强与实际像面光强的比值分析说明在完全相干光照明条件下存在分辨极限且两物点分辨极限为1.5 mm。For the two-point resolution problem, there has been a relatively in-depth study, the most famous of which is the Rayleigh criterion, but this criterion is only for the ideal state of completely incoherent research, and there is very little research on the limit of complete coherence. According to the principle of two-point resolution, this paper establishes a mathematical model of the spacing between two objects and the image surface light intensity, and gives the general law of imaging of two points under the condition of completely coherent light illumination through simulation results: under the condition of completely coherent light illumination, the resolution ability of two points is enhanced as the spacing between objects increases. Finally, the ratio analysis of the theoretical image light intensity to the actual image surface light intensity shows that there is an resolution limit under the condition of completely coherent light illumination and the resolution limit of the two objects point is 1.5 mm.

关 键 词：光学成像系统 瑞利判据 相干光 两点分辨率 圆孔衍射 

分 类 号：O438.2[机械工程—光学工程]