Multiple imaging and multiple Fourier transformation using planar microlens arrays

1990 ◽  
Vol 29 (28) ◽  
pp. 4064 ◽  
Author(s):  
Kenjiro Hamanaka ◽  
Hiroyuki Nemoto ◽  
Masahiro Oikawa ◽  
Eiji Okuda ◽  
Takashi Kishimoto
Keyword(s):  
Fourier Transformation ◽  
Microlens Arrays ◽  
Multiple Imaging ◽  
Planar Microlens

Multiple Imaging and Multiple Fourier Transformation Using Microlens Arrays

1990 ◽  
Vol 29 (Part 2, No. 7) ◽  
pp. L1277-L1280 ◽  
Author(s):  
Kenjiro Hamanaka ◽  
Takashi Kishimoto
Keyword(s):  
Fourier Transformation ◽  
Microlens Arrays ◽  
Multiple Imaging

Dynamic display of square-aperture planar microlens arrays

2010 ◽  
Author(s):  
Fengjun Zhang ◽  
Xiaomei Chen ◽  
Zhifang Zhao ◽  
Jie Chen ◽  
Sumei Zhou ◽  
...  
Keyword(s):  
Microlens Arrays ◽  
Dynamic Display ◽  
Planar Microlens

Ultrathin Planar Microlens Arrays Based on Geometric Metasurface

2017 ◽  
Vol 530 (2) ◽  
pp. 1700326 ◽  
Author(s):  
Jinjin Jin ◽  
Xiaohu Zhang ◽  
Ping Gao ◽  
Jun Luo ◽  
Zuojun Zhang ◽  
...  
Keyword(s):  
Microlens Arrays ◽  
Planar Microlens

Simulations of high-resolution images of amorphous silicon films

1986 ◽  
Vol 44 ◽  
pp. 544-545
Author(s):  
G. Y. Fan ◽  
J. M. Cowley
Keyword(s):  
Electron Microscope ◽  
High Frequency ◽  
Fourier Transformation ◽  
Amorphous Materials ◽  
Low Frequency ◽  
Chromatic Aberration ◽  
Structure Information ◽  
Frequency Components ◽  
High Resolution Images ◽  
Spatial Frequency Spectrum

It is well known that the structure information on the specimen is not always faithfully transferred through the electron microscope. Firstly, the spatial frequency spectrum is modulated by the transfer function (TF) at the focal plane. Secondly, the spectrum suffers high frequency cut-off by the aperture (or effectively damping terms such as chromatic aberration). While these do not have essential effect on imaging crystal periodicity as long as the low order Bragg spots are inside the aperture, although the contrast may be reversed, they may change the appearance of images of amorphous materials completely. Because the spectrum of amorphous materials is continuous, modulation of it emphasizes some components while weakening others. Especially the cut-off of high frequency components, which contribute to amorphous image just as strongly as low frequency components can have a fundamental effect. This can be illustrated through computer simulation. Imaging of a whitenoise object with an electron microscope without TF limitation gives Fig. 1a, which is obtained by Fourier transformation of a constant amplitude combined with random phases generated by computer.

Digital imaging and quantitative image analysis of polymer blends

1996 ◽  
Vol 54 ◽  
pp. 170-171
Author(s):  
Xiao Zhang
Keyword(s):  
Digital Imaging ◽  
Imaging Techniques ◽  
Imaging Systems ◽  
Polymer Science ◽  
Key Factors ◽  
Multiple Imaging ◽  
Quantitative Image ◽  
Digital Imaging Systems ◽  
Multi Phase ◽  
Network Technologies

Polymer microscopy involves multiple imaging techniques. Speed, simplicity, and productivity are key factors in running an industrial polymer microscopy lab. In polymer science, the morphology of a multi-phase blend is often the link between process and properties. The extent to which the researcher can quantify the morphology determines the strength of the link. To aid the polymer microscopist in these tasks, digital imaging systems are becoming more prevalent. Advances in computers, digital imaging hardware and software, and network technologies have made it possible to implement digital imaging systems in industrial microscopy labs.

State-of-the-art pulmonary arterial imaging – Part 2

VASA ◽  
2018 ◽  
Vol 47 (5) ◽  
pp. 361-375 ◽  
Author(s):  
Harold Goerne ◽  
Abhishek Chaturvedi ◽  
Sasan Partovi ◽  
Prabhakar Rajiah
Keyword(s):  
Pulmonary Artery ◽  
State Of The Art ◽  
Therapy Monitoring ◽  
Pulmonary Arteries ◽  
Imaging Modalities ◽  
Cross Sectional ◽  
Multiple Imaging ◽  
Cross Sectional Imaging ◽  
Pulmonary Arterial ◽  
Arterial Imaging

Abstract. Although pulmonary embolism is the most common abnormality of the pulmonary artery, there is a broad spectrum of other congenital and acquired pulmonary arterial abnormalities. Multiple imaging modalities are now available to evaluate these abnormalities of the pulmonary arteries. CT and MRI are the most commonly used cross-sectional imaging modalities that provide comprehensive information on several aspects of these abnormalities, including morphology, function, risk-stratification and therapy-monitoring. In this article, we review the role of state-of-the-art pulmonary arterial imaging in the evaluation of non-thromboembolic disorders of pulmonary artery.

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