Measurement of refractive index distribution using micro-lens array based on total internal reflection

2017 ◽  
Author(s):  
Junyao Chen ◽  
Wenping Guo ◽  
Kecheng Yang ◽  
Xiaojun Yin ◽  
Long Yu
Keyword(s):  
Refractive Index ◽  
Total Internal Reflection ◽  
Internal Reflection ◽  
Refractive Index Distribution ◽  
Lens Array ◽  
Index Distribution ◽  
Micro Lens Array ◽  
Micro Lens

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 Phase Retrieval with a Diffractive Micro Lens Array

2014 ◽  
Vol 8 (4) ◽  
pp. 251-259
Author(s):  
Xiyuan Liu ◽  
Karl-Heinz Brenner
Keyword(s):  
Phase Retrieval ◽  
Lens Array ◽  
Micro Lens Array ◽  
Micro Lens
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