衍射条纹
- 网络diffraction fringe
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理论计算和实验表明影响细丝直径测量精度的因素包括:衍射条纹宽度的测量、入射光波E取向和CCD的横向移动等。
The measurement of diffraction fringe width , the tropism of incident light E and the transverse displacement of CCD are the main factors that influence this precision from the study of theoretical arithmetic and experiment .
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当光源狭缝还有一定宽度W时,衍射条纹将增宽,相应最小分辨角Δθk将增大,实际光栅系统的分辨本领将减小。
When the slit of light source there is definite width W , the width of diffraction fringe should increase , and the minimum resolving angle Δθ k should be increasing , then the resolving power of actual grating system should be decreasing .
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CCD检测衍射条纹的数据处理
Data Processing of Diffraction Stripes During CCD Measurement
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基于CCD的单缝衍射条纹光强测量与小波去噪技术研究
Application of the Light 's Strength Measurement for Single Slot Diffraction Stripes Based on CCD Detection and Wavelet 's Denoise Technology
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本系统用He-Ne激光器产生的激光束,经准直扩束后,垂直照射待测细丝,形成衍射条纹。
The diffraction fringes were built by irradiating the measured wire normally with a expanded He-Ne laser beam .
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透明介质中单缝Fraunhofer′s衍射条纹的变化
Variation in single slit Fraunhofer ′ s diffraction fringe in transparent medium
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通过CCD的数据采集对单缝衍射条纹的光强进行测量试验,简要分析了试验中的噪声来源。
The light 's intensity of single slot diffraction stripes is measured through the data acquisition of CCD detection , the source of noise in the experiment is briefly analyzed .
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针对光栅衍射条纹强度分布的主极大强度进行研究,理论计算结果:主极大强度不是受一个单缝衍射强度调制,而是受缝数为N的光栅的N个单缝衍射强度调制。
By studying main maximum of grating diffraction stripe intensity distribution and calculating in theory , I gain the conclusion that the main maximum is modulated by all single slit grating diffraction intensity but not by one single slit grating diffraction .
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斜入射光栅衍射条纹的分布
The stripes distributing of grating diffraction in conditions of oblique incidence
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还对衍射条纹的信号处理进行研究。
What 's more , the real-time processing on diffraction stripe is studied .
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激光肌肉衍射条纹的机理与探测
The mechanism and detection of laser diffraction in muscle
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光栅衍射条纹分布的探讨
Investigation of the distribution of raster diffraction stripe
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光栅衍射条纹的最小次极大强度研究
Study of grating diffraction stripe minimal secondary maximum
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结果表明,激光束经过肌肉组织后,能在远场处产生明显的衍射条纹。
And the results show that slice muscle tissue can make the incident laser beam generate obvious diffraction phenomena .
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本文就是介绍一种简单的方法,把干涉条纹和衍射条纹分开。
This paper introduce an easy way in which the interference fringes and the diffraction fringes can be separated .
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对此,进行了理论分析,得出了衍射条纹强度分布与表面波振幅之间的解析关系式。
By theoretical analysis of the relationship between the intensity distribution and the LSW amplitude , the damping constant was obtained .
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并在激光束斜入射的条件下,实验上观察到衍射条纹具有明显的不对称性。
Under the condition of incidence obliquely for the laser beam , the asymmetry of the diffraction stripe was observed obviously .
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进一步分析得到,衍射条纹的间隔不仅与光栅常数有关,而且与入射角有关。
We analysis further that the interval of the diffraction stripe is not only related to the grating constant , but also to the incident angle .
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液体表面波衍射条纹的不对称性和弯曲液面的临界反射效应【心理】条件反射〔反应〕
The Asymmetry of Diffraction Patterns from Liquid Surface Waves and the Critical Light Reflection from the Curved Liquid Surface ; a conditioned reflex [ response ]
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锥形光栅的栅距呈线性周期性变化,在较小的通光范围内可以近似为均匀光栅,衍射条纹反应了当前的位置信息。
Tapered grating have cyclical changing pitch and in the context of a smaller pass-ray can be approximated as a uniform grating . The diffraction fringes reflect the current location information .
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本文拟导出菲涅耳直边衍射条纹的间距与波长、衍射距离的关系,可以较直观地了解菲涅耳衍射的情况。
This paper is intended to introduce the relationship among the intervals of Fresnel 's right-sided diffraction stripes , its wave length and its diffractive distance , So we can audio-visually understand the Fresnel 's diffraction .
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选用高密度光栅产生衍射条纹,研究其信号合成、采集及处理的方法以实现在长度计量中,纳米分辨力的计数。
The method using the diffractive stripe brought by the high consistency of grating and researching the compound , gather and disposal of its signal to achieve the calculation of the resolving power of nanometer in the measurement of length .
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根据光栅方程一般表达式,分析得到了衍射条纹的解析表达式,由该表达式可以解释衍射条纹位置和光斑强度的不对称性,及其产生的机理。
According to the general formula of the grating equation , the analytical expression of the diffraction stripe is received . The position of the diffraction stripe and the flare strength asymmetry and its mechanism can be explained by this expression .
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本文阐述了光栅衍射条纹的分布,将平行光斜入射与垂直入射的情况做了对比,说明斜入射只能改变衍射条纹的对称性,并不能增加光屏上主极大条纹的条数。
The distribution of raster diffraction stripe is studied in this paper . Contrasted parallel light inclined incidence with upright incidence , which shows that inclined incidence only changes the symmetry of diffraction stripe , and not increase the number of the main greatest stripe on the screen .
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单缝衍射暗条纹中心距的精确测量
Precision measurement of the center distance of single slit diffracted dark stripes
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激光单丝衍射附加条纹的探讨
Research on additive fringes of diffraction by single silk
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无衍射光莫尔条纹法直线度测量仪
Instrument for straightness measurement using non-diffracting beam and moire fringe
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莫尔偏转法中衍射效应对条纹对比度的影响&相干光照明
The Influence of Diffraction Effect on Frings Contrast in Measuring Phase Objects by Moire Deflectometry * by Coherent Light
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讨论了对相位差为非严格90°的衍射光栅干涉条纹两路正弦信号的椭圆拟合算法的实现;
The realization of ellipse fit algorithm for two sinusoidal signal of diffraction grating with non-strict 90 ° phase dispatch is discussed .
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具体介绍测量系统的构成,细丝衍射原理,条纹图象采集和处理,测量精度分析。
The composition of the measuring system , thread diffraction principle , stripe image collection and processing are introduced and the measuring accuracy is analysed .