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Focusing system extends liquid lens autofocusing for mobile phones.

Olivier Jacques-Sermet, Varioptic SA

Because of the current trend of decreasing pixel size to increase pixel count on CMOS imaging sensors, autofocus is becoming necessary to maximize the use of the sensor in its full-resolution capability over a wide depth of field. Hence, autofocus is being adopted as a standard feature in high-resolution imaging systems, typically those above 2 megapixels. As a result, new autofocus mechanisms are under development, including one using liquid lens technology. An autofocus lens can focus on different planes from infinity to a distance as close as 10 cm. To produce a sharp image, the lens...Read full article

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    Published: November 2007
    Glossary
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    autofocusCMOS imaging sensorsFeatureshigh-resolution imaging systemsindustrialphotonicsSensors & Detectors

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