TechSpot

Varioptic - Digital Lenses Go Liquid

By bobcat
Aug 19, 2013
Post New Reply
  1. There's a substantial revolution afoot in the world of miniaturized optics. For focusing or zooming in and out, it's goodbye to the mechanical components that move the lenses in your camera, and time to welcome their successors with no moving parts. It took inventor Bruno Berge ten years of research and four years of development for the optical system to become fully operational.

    How does it work? Inside a sealed cell, we enclose two immiscible liquids that have the same density: One is a conductor, like water, the other a non-conductor, like oil. We then apply an electrical voltage. The concave interface between the two liquids is very sensitive to the voltage: it changes shape quickly and reversibly... So the quality of the image depends on the voltage applied.

    High optical quality and a very wide optical power range, together with a fast response time, are the main advantages of these new lenses. They are also resistant to the harsh treatment (heat or shock) that they may undergo when used on a daily basis in mobile devices such as cell phones, where these lenses have found their first application. The problem is that mechanical systems remain costly (the optical system alone makes up half the price of a digital camera), consume a lot of energy, and are difficult to miniaturize. These are all setbacks that don't affect Varioptic's new lens system.

    Certified by major manufacturers of cell phones, particularly in Asia, the lenses are now available on the market.

    http://www2.cnrs.fr/en/1011.htm
     
    cliffordcooley likes this.


Add New Comment

TechSpot Members
Login or sign up for free,
it takes about 30 seconds.
You may also...


Get complete access to the TechSpot community. Join thousands of technology enthusiasts that contribute and share knowledge in our forum. Get a private inbox, upload your own photo gallery and more.