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Varioptic liquid lens production is getting up to speed

It's not even two years ago that Varioptic launched a new liquid lens for a number of new markets, the communications market for mobile phones, PDAs, web cams, and the entertainment market for digital cameras, camcorders and gaming applications. Today, the total manufacturing capacity is already at 100.000 units per month and is planned to reach 1 million units at the end of this year. Varioptic's liquid lenses, using two drops of liquid, act similarly to the human eye, in that they can change shape, to zoom or focus automatically...
Liquid lenses in Varioptic e-News, issue 1


The liquid lenses that we develop are based on the electrowetting phenomenon. A water drop is deposited on a substrate made of metal, covered by a thin insulating layer. The voltage applied to the substrate modifies the contact angle of the liquid drop. The liquid lens uses two isodensity liquids, one is an insulator while the other is a conductor. The variation of voltage leads to a change of curvature of the liquid-liquid interface, which in turn leads to a change of the focal length of the lens.

Intellectual Property

Varioptic has pioneered the electrowetting technology since its founding and is now at the forefront of all advances in this field. Varioptic owns 2 fundamental global patents on the technology and is dedicating much of its resources to improve and patent new advances in this technology.  

Key competitive advantages

• Large inverse focal length range
• Ruggedness (No moving parts )
• Fast response
• Very good optical quality
• Good transparency in the visible range
• Wide Operating temperature range
• Very good stability of the optical axis
• Extremely low electrical consumption
• Simple low-cost construction

Additional information: Liquid lenses in Varioptic e-News, issue 1
May 13, 2007
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