The effect parameters, such as fiber optical spot size, the numerical aperture and magnification of a gradient index lens, match and assembly between a gradient index lens and the fiber on axial resolution of the fiber optical confocal microscope. 分析和研究了光纤光斑尺寸、透镜的数值孔径、放大倍率、光纤与透镜的匹配及装配等对自聚焦共焦光纤传感轴向分辨率的影响。
Results show that the error decreases with the increase of fracture aperture, the pressure gradient and flow behavior index and increased with the increase of the yield stress. 研究表明,误差随着裂缝宽度、压力梯度和流型指数增加而降低,随着动切力增加而增加。
The system can also be applied to measurement of numerical aperture of polymer optic fiber and characterization of the refractory index distribution. 该系统也可实现聚合物光纤数值孔径的测量和折射率分布的表征等。
The results show that for the imaging light the intensity of TM polarized light relatively increases because of large numerical aperture, which will influence image quality. Imaging in high refractive index medium can be used to improve this polarization effect problem. 结果表明,大数值孔径使成像光束中TM偏振光强度相对增加,影响成像对比度;提高像方介质的折射率,例如将像方介质改为折射率油,会改善此种偏振效应问题。
A systematic investigation on effect of a few surfactants usually used in sugar manufacture on MA ( Mean Aperture ), CV ( Coefficient of Variation ) and CRI ( Crystal Regularity Index ) of sucrose crystals is presented. 本文对制糖工业常用的几种表面活性剂在影响蔗糖结晶平均孔径(MA),变异系数(CV)及晶体规一性指数(CRI)方面作了系统的研究。