Planar Liquid Confinement for Optical Centering of Dielectric Liquid Lenses

2009 ◽  
Vol 21 (19) ◽  
pp. 1396-1398 ◽  
Author(s):  
C.G. Tsai ◽  
Chi-Nan Chen ◽  
Li-Shun Cheng ◽  
Chih-Cheng Cheng ◽  
Jing-Tang Yang ◽  
...  
Keyword(s):  
Dielectric Liquid ◽  
Liquid Lenses

scholarly journals Tunable-Focus Liquid Lens through Charge Injection

Micromachines ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 109 ◽  
Author(s):  
Shizhi Qian ◽  
Wenxiang Shi ◽  
Huai Zheng ◽  
Zhaohui Liu
Keyword(s):  
Corona Discharge ◽  
Charge Injection ◽  
Dielectric Liquid ◽  
Liquid Lenses ◽  
Liquid Lens ◽  
3D Printed ◽  
Tube Structure

Liquid lenses are the simplest and cheapest optical lenses, and various studies have been conducted to develop tunable-focus liquid lenses. In this study, a simple and easily implemented method for achieving tunable-focus liquid lenses was proposed and experimentally validated. In this method, charges induced by a corona discharge in the air were injected into dielectric liquid, resulting in “electropressure” at the interface between the air and the liquid. Through a 3D-printed U-tube structure, a tunable-focus liquid lens was fabricated and tested. Depending on the voltage, the focus of the liquid lens can be adjusted in large ranges (−∞ to −9 mm and 13.11 mm to ∞). The results will inspire various new liquid-lens applications.

scholarly journals Temperature effects on dielectric liquid lenses

2014 ◽  
Vol 22 (2) ◽  
pp. 1930 ◽  
Author(s):  
Hongxia Zhang ◽  
Hongwen Ren ◽  
Su Xu ◽  
Shin-Tson Wu
Keyword(s):  
Temperature Effects ◽  
Dielectric Liquid ◽  
Liquid Lenses

Interferograms of dielectric liquid lenses

2012 ◽  
Author(s):  
Y. Kevin Chang ◽  
Kuo Cheng Huang ◽  
En Hao Chang ◽  
J. Andrew Yeh
Keyword(s):  
Dielectric Liquid ◽  
Liquid Lenses

scholarly journals Three-dimensional illumination system using dielectric liquid lenses

2011 ◽  
Vol 19 (S4) ◽  
pp. A740 ◽  
Author(s):  
Yen-Sheng Lu ◽  
Ling-Yu Tsai ◽  
Kuo-Cheng Huang ◽  
C. Gary Tsai ◽  
Chih-Cheng Yang ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Dielectric Liquid ◽  
Liquid Lenses ◽  
Illumination System

Synthetic jet enhancement of natural convection and pool boiling in a dielectric liquid

2002 ◽  
Author(s):  
Jivtesh Garg ◽  
Mehmet Arik ◽  
Avram Bar-Cohen ◽  
Rex Wolf ◽  
Bojan Vukasinovic ◽  
...  
Keyword(s):  
Natural Convection ◽  
Pool Boiling ◽  
Synthetic Jet ◽  
Dielectric Liquid

scholarly journals Can Liquid Lenses Increase Depth of Field in Head Mounted Video See-Through Devices?

2021 ◽  
Vol 7 (8) ◽  
pp. 138
Author(s):  
Marina Carbone ◽  
Davide Domeneghetti ◽  
Fabrizio Cutolo ◽  
Renzo D’Amato ◽  
Emanuele Cigna ◽  
...  
Keyword(s):  
Control System ◽  
Clinical Practice ◽  
Augmented Reality ◽  
Time Of Flight ◽  
Depth Of Field ◽  
Liquid Lenses ◽  
Good Potential ◽  
Distance Sensor ◽  
Limited Depth ◽  
Lens Optics

Wearable Video See-Through (VST) devices for Augmented Reality (AR) and for obtaining a Magnified View are taking hold in the medical and surgical fields. However, these devices are not yet usable in daily clinical practice, due to focusing problems and a limited depth of field. This study investigates the use of liquid-lens optics to create an autofocus system for wearable VST visors. The autofocus system is based on a Time of Flight (TOF) distance sensor and an active autofocus control system. The integrated autofocus system in the wearable VST viewers showed good potential in terms of providing rapid focus at various distances and a magnified view.

Ti-6Al-4V Surfaces in SiC Powder Mixed Electrical Discharge Machining

2013 ◽  
Vol 856 ◽  
pp. 226-230 ◽  
Author(s):  
Hamidullah Yaşar ◽  
Bülent Ekmekci
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Dielectric Liquid ◽  
Operational Parameters ◽  
Electrical Parameters ◽  
Machined Surface ◽  
Optical Scanning ◽  
Surface Topographies ◽  
Powder Suspension

The role of suspended particles on Ti-6Al-4V surface in Powder Mixed Electrical Discharge Machining (PMEDM) is studied using SiC powder mixing in water dielectric liquid. Surface modifications due to the additives in dielectric liquid are investigated by means of optical, scanning electron microscopy and energy dispersive spectroscopy. The attachment of added powders and surface topographies interrelated with powder suspension concentration, particle size and electrical parameters such as pulse on duration and current. The influence on discharge transitivity with respect to SiC additives is noticed with pock like features on the surface. The geometry and size of these features indicated a robust dependency with respect to operational parameters and indicated the role of secondary discharges during PMEDM. SiC particles severely transferred from di-electric liquid to machined surface at critical operational parameters and implied that the process could be also used as a surface alloying technique.

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