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本文论述了双曝光全息干涉测量技术的基本理论和实际应用方法。并进而推论了条纹形状和物体微小位移之间的定量关系。最后给出了实验装置和实验结果。 相似文献
3.
本文介绍了一种对研究发动机燃烧过程有着重要应用价值的实验技术-时间分幅全息技术,本文就该技术中常常出现的重影问题做了重点研究,通过分析重影出现的根源,找到了一种消除重影的新方法,文章还举例说明了该技术在液体破碎机理问题保研究中的应用。 相似文献
4.
Koki Murano Tomoyoshi Shimobaba Atsushi Sugiyama Naoki Takada Takashi Kakue Minoru Oikawa Tomoyoshi Ito 《Computer Physics Communications》2014
We report fast computation of computer-generated holograms (CGHs) using Xeon Phi coprocessors, which have massively x86-based processors on one chip, recently released by Intel. CGHs can generate arbitrary light wavefronts, and therefore, are promising technology for many applications: for example, three-dimensional displays, diffractive optical elements, and the generation of arbitrary beams. CGHs incur enormous computational cost. In this paper, we describe the implementations of several CGH generating algorithms on the Xeon Phi, and the comparisons in terms of the performance and the ease of programming between the Xeon Phi, a CPU and graphics processing unit (GPU). 相似文献
5.
Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what
is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic
sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and
its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of
an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify
robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can
or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest.
This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January
31–February 2, 2008 相似文献
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Diazo Meldrum’s acid undergoes a photoreaction induced by UV light and it is used as photosensitizer in photoresists. Upon photoreaction, a change in refractive index occurs, which makes this system interesting for volume holography. We report on the sublimation effect at room temperature and the effect of photoirradiation on the refractive index in thin films of CAB (Cellulose acetate butyrate) doped with different amount of diazo Meldrum’s acid. A net modulation of the refractive index of 0.01 is achieved with 40% of doping ratio together with a reduction of the film thickness. 相似文献
8.
Photopolymer are appealing materials for diffractive elements recording. Two of their properties when they are illuminated are useful for this goal: the relief surface changes and the refractive index modifications. In this paper we use a 2-dimensional model, based on direct parameter measurements, for predicting the refractive index distributions during and after illumination. We have analyzed different recording spatial frequencies for photopolymers based on PVA/Acrylamide. This model was successfully applied to different photopolymer compositions with different values of monomer diffusion and polymerization rates. 相似文献
9.
When there are low signal to noise relationships or low coherences between measured pressure and a reference sensor, a pressure
field measured and estimated by NAH (Nearfield Acoustic Holography) becomes noisy on the hologram and source planes. This
paper proposes a method to obtain the high coherent de-noised pressure signals from low coherent noisy ones by combining a
wavelet algorithm with NAH. The proposed method obtains the de-noised field from acoustic fields on a noise source plane reconstructed
through backward propagation of NAH. Thus this method does not need high coherent pressure signals on the hologram surface
while the conventional nearfield acoustic holography requires high-coherent signals. The proposed method was verified by numerical
simulation using noisy signals, composed of original signals and imposed noises distributed on the hologram surface. 相似文献
10.
全息CT测量轴对称透明体折射率变化的模拟 总被引:1,自引:0,他引:1
简要讨论了全息CT测量原理,理论上证明根据实时全息干涉图的强度分布测量待测物体折射率三维(3-D)变化的可行性;利用计算机对轴对称介质折射率变化的全息CT干涉条纹进行模拟研究,并给出模拟研究的应用实例。 相似文献