Two-dimensional multi-lens array with circular aperture spherical lens for flat-top irradiation of ICF target

1996 ◽  
Author(s):  
N. Nishi ◽  
T. Jitsuno ◽  
M. Nakatsuka ◽  
S. Nakai
Keyword(s):  
Circular Aperture ◽  
Two Dimensional ◽  
Spherical Lens ◽  
Lens Array ◽  
Icf Target

scholarly journals Rapid Fabrication of Continuous Surface Fresnel Microlens Array by Femtosecond Laser Focal Field Engineering

Micromachines ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 112 ◽  
Author(s):  
Linyu Yan ◽  
Dong Yang ◽  
Qihuang Gong ◽  
Yan Li
Keyword(s):  
Femtosecond Laser ◽  
Three Dimensional ◽  
Fresnel Lens ◽  
Two Dimensional ◽  
Direct Writing ◽  
Lens Array ◽  
Two Photon ◽  
Rapid Fabrication ◽  
Continuous Surface ◽  
Two Photon Polymerization

Femtosecond laser direct writing through two-photon polymerization has been widely used in precision fabrication of three-dimensional microstructures but is usually time consuming. In this article, we report the rapid fabrication of continuous surface Fresnel lens array through femtosecond laser three-dimensional focal field engineering. Each Fresnel lens is formed by continuous two-photon polymerization of the two-dimensional slices of the whole structure with one-dimensional scan of the corresponding two-dimensional engineered intensity distribution. Moreover, we anneal the lens array to improve its focusing and imaging performance.

scholarly journals Replication of thermoplastic polymer spherical lens array using microforged molding technique

2016 ◽  
Vol 24 (26) ◽  
pp. 30264 ◽  
Author(s):  
Dan Xie ◽  
Xuefeng Chang ◽  
Xiayun Shu ◽  
Jian Wang ◽  
Lifang Mei ◽  
...  
Keyword(s):  
Thermoplastic Polymer ◽  
Spherical Lens ◽  
Lens Array

scholarly journals Numerical simulation of mixing by Rayleigh–Taylor and Richtmyer–Meshkov instabilities

1994 ◽  
Vol 12 (4) ◽  
pp. 725-750 ◽  
Author(s):  
D.L. Youngs
Keyword(s):  
Numerical Simulation ◽  
Turbulence Model ◽  
Turbulent Mixing ◽  
Inertial Confinement Fusion ◽  
Three Dimensional ◽  
Small Scale ◽  
Inertial Confinement ◽  
Two Dimensional ◽  
Confinement Fusion ◽  
Icf Target

Rayleigh-Taylor (RT) and Richtmyer–Meshkov (RM) instabilities at the pusher–fuel interface in inertial confinement fusion (ICF) targets may significantly degrade thermonuclear burn. Present-day supercomputers may be used to understand the fundamental instability mechanisms and to model the effect of the ensuing mixing on the performance of the ICF target. Direct three-dimensional numerical simulation is used to investigate turbulent mixing due to RT and RM instability in simple situations. A two-dimensional turbulence model is used to assess the effect of small-scale turbulent mixing in the axisymmetric implosion of an idealized ICF target.

scholarly journals Two-dimensional and three-dimensional transparent screens based on lens-array holographic optical elements

2014 ◽  
Vol 22 (12) ◽  
pp. 14363 ◽  
Author(s):  
Keehoon Hong ◽  
Jiwoon Yeom ◽  
Changwon Jang ◽  
Gang Li ◽  
Jisoo Hong ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Two Dimensional ◽  
Optical Elements ◽  
Lens Array ◽  
Holographic Optical Elements

Shift multiplexing with a two-dimensional lens array

2010 ◽  
Vol 101 (1-2) ◽  
pp. 311-314
Author(s):  
X.-M. Chen ◽  
W.-Y. Liang ◽  
H.-Z. Wang
Keyword(s):  
Two Dimensional ◽  
Lens Array

Study on the Fabrication of RPAS Micro-Lens Array for CCD Integration

2013 ◽  
Vol 552 ◽  
pp. 174-179
Author(s):  
Zhe Chen ◽  
Lian He Dong ◽  
Yan Jun Sun ◽  
Yan Bing Leng ◽  
Zhen Fang Ma ◽  
...  
Keyword(s):  
Refractive Index ◽  
Exchange Process ◽  
Decisive Role ◽  
Utilization Efficiency ◽  
Detection Sensitivity ◽  
Circular Aperture ◽  
Ionic Exchange ◽  
Lens Array ◽  
Micro Lens Array ◽  
Micro Lens

The micro-lens array for CCD systems can enhance the utilization efficiency of light energy, then improve its detection sensitivity. This paper firstly researches on the principle of micro-lens array for CCD integration, the lens changing refractive index theory and the mechanism of ionic exchange on glass materials. Then, with reasonable design of the mask and optimization the ionic exchange process parameters, the paper finally produces the Rectangular Plane Arched Shape (RPAS) micro-lens array on the plate glasswith the unit feature size being 22μm x 22μm. The results show that the RPAS micro-lens array’s fill factors could be achieved 93%, and the spectral sensitivity can be improved by 0.3 times. The mask plays a decisive role in micro-lens which is manufactured by ionic exchanged method. The reasonable selection of the mask parameter can eliminate the void that in the circular aperture planar micro-lens array, and enhance the fill factor; in the ionic exchange process, it is easy to obtain the large refractive index by using the ion-pair that have big differences. The ionic exchanged temperature below the glass softening temperature at about 20°C is appropriate.

scholarly journals Two-dimensional performance of uniform irradiation with the use of a concentricity deviation lens array and partially coherent light

2012 ◽  
Vol 61 (15) ◽  
pp. 154205
Author(s):  
Zheng Jian-Zhou ◽  
Yu Qing-Xu ◽  
Guan Shou-Hua ◽  
Dong Bin ◽  
Cao Xiao-Jun ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Coherent Light ◽  
Lens Array ◽  
Partially Coherent ◽  
Partially Coherent Light
Sign in / Sign up

Export Citation Format

Share Document