To improve measurement accuracy of thin cylinder's diameter by opticaldiffraction, an improved model is established with recursive method, which is more accurate.
为了提高光学衍射法细圆柱体直径测量精度，用递归法建立了更精确的改进模型。
2
It utilizes the evanescent field confined at the tiny aperture for providing images of object surfaces with a resolution beyond the classical opticaldiffraction limit.
这种显微镜利用局限在微小孔径上的隐失场提供物体表面形貌的细节，其分辨率可突破传统光学的衍射极限。
3
An optic fiber grating diffraction screen is developed by use of opticaldiffraction. Combining with computer neural network, a vision system for recognizing stereo shape is developed.