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1)  thermal lens focal length
热焦距测量
2)  focal length measurement
焦距测量
1.
Research on focal length measurement based on digital image processing;
基于数字图像处理方法的焦距测量技术研究
2.
A new method for long focal length measurement is presented, which is accomplished by obtaining the angle of moiré stripe formed by Talbot effect of Ronchi grating.
这种长焦距测量方法具有实时测量、精度高的特点。
3.
Based on these, a novel method for long focal length measurement is presented, which is achieved by calculating the angle of Moire fringes formed by Talbot image of one Ronchi grating and another Ronchi grating.
本文介绍了焦距测量的常用方法,并且结合本课题的应用背景,以Ronchi光栅为例对Talbot效应和Moiré条纹现象进行了理论分析和公式推导。
3)  Long focal length measurement
长焦距测量
1.
On the basis of Talbot effect and moire fringe technology, a novel method for the long focal length measurement of large aperture lens was presented.
本课题完成了整套长焦距测量系统的样机开发工作。
4)  mersurement of lenses focal lengths
透镜焦距测量
5)  thermal lens focus
热焦距
1.
Determining the thermal lens focus of LD end-pumped Nd∶GdVO_4 solid-state laser with CCD detecting method;
CCD测量LD端面抽运Nd∶GdVO_4固体激光器热焦距
2.
The relation between stability zone and thermal lens focus f was analyzed, and the formula of mode volume for the two typical resonators was calculated.
采用矩阵光学的方法对两种典型双棒串接Nd∶YAG激光器谐振腔进行了研究 ,分析了两种腔型的稳定区间和热焦距 f的关系 ,并推导出两种腔型的模体积计算公式 。
3.
Influence of differences of thermal lens focus on beam of two rods solid-state laser has been analyzed.
采用矩阵光学的方法对两级串接Nd:YAG激光器谐振腔进行了研究,分析了热焦距的差异对双棒串接固体激光器的输出光束基模模体积及光束质量的影响 结果表明:两支棒内模体积相等时,模式匹配较好,总的模体积较大 在匹配状态下,有效基模模体积及输出镜上光斑半径得到了较好的改善,输出光束的质量得到了较大的提
6)  thermal focus length
热焦距
1.
The figures of laser waist and thermal focus length dependence on pump power are received, too.
由热传导方程得出YAG晶体内的温度分布,模拟出激光晶体的折射率分布,并得到了激光束腰和YAG的热焦距随泵浦功率的变化曲线。
2.
Temperature distribution in YAG crystal is obta ined by heat exchange equation,thermal stress and thermal stress birefringence in YAG crystal are analyzed,the figures of thermal focus length,laser waist and far-field beam divergent angle dependence on pump power are received.
由热传导方程得出YAG晶体内的温度分布 ,分析了激光介质中的热应力和热应力双折射 ,并得到YAG的热焦距及激光束腰和远场发散角随泵浦功率的变化图形。
补充资料:动态热机械测量
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性质:当受试材料在程序控制温度的环境中,测量其在振动负荷作用下的动态模量和(或)阻尼与温度关系的一种技术。扭辫测量就是一种常用的动态热机械测量。使用这种技术可以检测聚合物的玻璃化转变和次级松弛过程。可以在很宽的温度与频率范围内研究聚合物的多重转变和评价阻尼材料的优劣。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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