scholarly journals Design of spherically corrected, achromatic variable-focus liquid lenses

2007 ◽  
Vol 15 (21) ◽  
pp. 14146 ◽  
Author(s):  
Stephan Reichelt ◽  
Hans Zappe
Keyword(s):  
Liquid Lenses ◽  
Variable Focus

Applications of variable focus liquid lenses for curvature wave-front sensors in astronomy

2014 ◽  
Author(s):  
J. Fuentes-Fernández ◽  
S. Cuevas ◽  
L. C. Alvarez-Nuñez ◽  
A. M. Watson
Keyword(s):  
Wave Front ◽  
Liquid Lenses ◽  
Variable Focus

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.

scholarly journals In vivo fast variable focus photoacoustic microscopy using an electrically tunable lens

2014 ◽  
Vol 22 (17) ◽  
pp. 20130 ◽  
Author(s):  
Bingbing Li ◽  
Huan Qin ◽  
Sihua Yang ◽  
Da Xing
Keyword(s):  
Fast Variable ◽  
Photoacoustic Microscopy ◽  
Variable Focus ◽  
Tunable Lens

scholarly journals Equilateral hyperbolic moir� zone plates with variable focus obtained by rotations

2005 ◽  
Vol 13 (3) ◽  
pp. 918 ◽  
Author(s):  
Zbigniew Jaroszewicz ◽  
Andrzej Ko?odziejczyk ◽  
Alejandro Mira ◽  
Rodrigo Henao ◽  
Salvador Bar�
Keyword(s):  
Zone Plates ◽  
Variable Focus

scholarly journals Flat liquid crystal diffractive lenses with variable focus and magnification

2010 ◽  
Author(s):  
Pouria Valley ◽  
Mohammad Reza Dodge ◽  
Jim Schwiegerling ◽  
David Mathine ◽  
Gholam Peyman ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Diffractive Lenses ◽  
Variable Focus

scholarly journals Readiness in Retirement Life

2020 ◽  
Vol 76 ◽  
pp. 01004
Author(s):  
Dewi Astuti
Keyword(s):  
Old Age ◽  
Purpose In Life ◽  
Educational Background ◽  
Life Goals ◽  
Independent Variables ◽  
Pension Program ◽  
Study Population ◽  
Independent Variable ◽  
The Moment ◽  
Variable Focus

This study investigates whether the ownership of a retirement program is owned only by those who have a purpose in life in old age or also owned by those who focus on working well now and do not have a purpose in life in old age. The study population is employees, and entrepreneurs who have worked, with sample criteria have a steady income with a specific educational background. The number of samples is 52 respondents. The result revealed that having the purpose of life in old age, and focusing on the purpose of life at the moment encourage someone to have a pension program. The results of the study stated that the effect of the independent variables on the dependent variable appeared weak. The independent variable "has the purpose of old age life" and the independent variable "focus on life goals current" can explain 0.69 % of the dependent variable "has retirement fund program.

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