波带片焦点光强的讨论  

Discussion on the focus light intensity of zone plate

作　　者：张宝志[1] 

机构地区：[1]牡丹江大学,黑龙江牡丹江157011

出　　处：《哈尔滨工业大学学报》2006年第12期2203-2204,共2页Journal of Harbin Institute of Technology

摘　　要：现光学教材中,对波带片的主焦点和各次焦点的光强,一般都认为各次焦点的光强比主焦点的光强弱得多,其强度变化可忽略.本文通过对圆孔菲涅耳衍射的讨论,用类比的方法得出波带片主焦点和各次焦点光强相同的结论.It is considered in the present optics Textbooks to the light intensity of major focus and every minor focus that the light intensity of every minor is much weaker than that of major focus and the change of intensity can be neglected. This paper reaches a conclusion that the light intensity of major focus and minor focus of zone plateare same with the method of analogy through the discussion of Fresnel diffraction to the disc hole.

关 键 词：波带片 焦点光强 类比 

分 类 号：O436.1[机械工程—光学工程]