MWC 2016: OPPO SmartSensor from Oppo - next-generation image stabilization technology for smartphones

    Welcome to our valued readers on the iCover Blog Pages ! It will not be an exaggeration to say that any smartphone of any reputable manufacturer, claiming the attention of a wide audience and a place in the coveted flagship line today, by definition, cannot afford a second-rate low-quality camera. In turn, the built-in camera with a progressive image stabilization system that allows you to capture high-quality photos and videos is perceived by us as a mandatory component of mobile comfort and a good argument when choosing a gadget model.

    The prototype of a fundamentally new image stabilization system for smartphones, which allows you to forget about the many limitations of existing cameras of mobile devices, was proposed by the Chinese company Oppo at MWC 2016.

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    The level and number of new products announced at MWC 2016 and claiming the title of “announcement of the current decade” is simply off the charts. This time, Oppo decided to surprise the venerable and biased audience, which has recently introduced the innovative SuperVOOC charger, which allows you to restore a 2500 mAh battery in just 15 minutes . This time the focus was on the prototype of the new OPPO SmartSensor image stabilization system , the smallest, most accurate, energy-efficient, affordable in production and fastest of all integrated systems existing on the modern market of mobile devices.

    How OPPO SmartSensor Technology Works


    Despite the difference in the level of complexity of the existing mobile technological solutions, the optical stabilization system has one common principle: the lenses act as movable elements, the displacement of which in the process of image stabilization is controlled by the controllers. Hand shake and camera vibrations at the time of the picture, recorded by the gyroscopic sensor, were compensated by the coordinated movement of the lenses perpendicular to the optical axis. The complication of the optical system and the increase in the number of lenses in the lenses inevitably led to the complexity and cost of the entire stabilization system. Moreover, the system built into the lens by itself is not able to compensate for the jitter of the picture along the roll axis.

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    To solve this problem, manufacturers of photographic equipment have to refine their work by using entire complexes of ingenious mechanical devices, using “floating” chassis with gyroscopic stabilization in one of the planes, etc. Such measures, in total, significantly complicated the ready-made solution, significantly affecting key priorities: mobility, cost and reliability.

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    The element-wise design of the standard OIS mobile camera The

    search for a solution to the problem described above has long been exciting the minds of developers of image stabilization systems for mobile gadgets. And Oppo engineers were able to find it, proposing a fundamentally different circuit design solution. It was proposed to make the moving elements of the stabilization system not the lens of the lens, but the matrix of the system itself.

    In accordance with the technology called OPPO SmartSensor, in order to compensate for vibrations along all three axes, it is enough to use a matrix of electromechanical elements of the MEMS system controlled by means of variable voltage. In this case, the error in the correction of vibration is 0.3 μm (less than a pixel), while the traditional OIS system is able to provide a correction accuracy of 3-5 μm.


    Solution used for image stabilization in existing OIS systems


    Oppo SmartSensor OIS

    Simplicity of the solution, as usual, entails other advantages. So the response time implemented in OPPO SmartSensor is only 15 ms, while in systems with standard spring servo drives, on average, 50 ms. For a user who is far from the technological subtleties of organizing the image stabilization process, this advantage means one thing: the likelihood that an excellent frame will be captured in a timely manner increases significantly.

    Another major advantage of the solution is energy efficiency. So for the production of one frame using the proposed scheme, in comparison with common solutions, it takes 50 (!) Times less energy, and this is a significant saving in battery power.

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    At the same time, the power consumed by traditional optical OIS systems during prolonged shooting leads to the heating of the lens, which, in turn, may affect the quality of the stabilization system and the images themselves.

    A source



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