Technology

 

Tech notes & White Paper

 

Patents:

Optical physics is a mature science, and there are tens of thousands of patents for optical devices. So it is dramatic and exceedingly rare for a young company to own the basic patents on a major, foundational technology. Varioptic owns the two key patents that protect the essential elements of a liquid, focusable lens, covering the concept of centering a liquid droplet and the geometry of a centering container that makes it possible to use a liquid as a lens. Bruno Berge led the research underlying these patents at the University of Grenoble, and Varioptic has acquired complete control of the patents from the university.
Since its founding, Varioptic keeps dedicating much of its resources to improve and patent new advances in this technology.

Patent n°1:
“Lens with variable focus"
priority date:  8th October 1997
International publication number:  WO 99/18456

Patent n°2:
"drop centering device"
International publication date: 5th october 2000
priority date: 26th march 1999
international publication number:  WO 00/58763

Scientific Papers

Category Description
 
Tunable Lenses Proceedings of the MEMS 2005 conference, held in Miami, USA Jan 30- Feb 3 2005-02-05
   
 
Tunable Lenses Proceedings of the 10th MicroOptics conference, Jena Germany, September 1-3 2004
   
 
Tunable Lenses Bruno Berge, Claude Gabay et al, « Dynamic study of a Varioptic variable focal lens » , Proceedings of SPIE, 8-9 July 2002
   
 
Tunable Lenses B. Berge and J. Peseux; « Variable focal lens controlled by an external voltage: an application of electrowetting », Eur. Phys. J. E (2000) 3 p159-163.
   
 
Tunable Lenses Lisa SAUREI, Gilles Mathieu, Bruno Berge, « Design of an autofocus lens for VGA ¼ CCD and Cmos sensor », proceedings of SPIE conference, September 2003.
   
 
Fundamentals on electrowetting 31st Kogaku Symposium 2006, 22-23 June, Tokyo. Organized by the Optical Society of Japan.
   
 
Fundamentals on electrowetting C. Quilliet , Bruno Berge, « Investigation of effective interface potentials by electrowetting » Eurphysics letter, 1 october 2002PP 99-105
   
 
Fundamentals on electrowetting Invited review paper : Quilliet C., Berge B. : « Electrowetting: a recent outbreak », Current Opinion in Colloid & Interface Science (2001) 6 :11-16
   
White Papers
Category Description