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Less noise with new CMOS sensors

At Mobile World Congress 2011, which starts in Barcelona on Monday and will last until February 17, Samsung will demonstrate two new CMOS sensors (S5K3L1 and S5K3H2), which are targeted for use in smartphones.

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In spite of the widespread (and quite fair) conviction that “the camera is pampering in the phone, it will not replace the camera,” situations often happen when there is nothing better at hand than the camera does not have on the phone. And here the phrase “Sorry for quality, rented by phone” is often used as a software filter that improves the quality of a photo. Samsung loves its customers very much and doesn’t want them to apologize for their own equipment. Therefore, our engineers do not get tired to offer new solutions that will allow you to be proud of the pictures, and not to apologize for them.

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The model S5K3L1 - 1 / 3.2-inch 12-megapixel sensor. It is made using BSI (Back Side Illuminated) backlight technology, which allows you to shoot with minimal noise in low light.

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The difference between a conventional sensor (with front illumination) and a new sensor with BSI backlight technology is that the BSI device simplifies light entering the photodiodes sensor. In a conventional CMOS sensor, the light is forced to pass through metal wiring and circuit elements before it hits the photodiodes (the so-called “light receiving surface” on the diagram). In the backlit sensor, the wiring is hidden behind the light-receiving surface, due to which the sensor becomes more light-sensitive.

Also, the novelty is equipped with an optional RGB-white filter, which allows you to get brighter pictures (by 30% compared to traditional RGB-filters). Some additional features are designed to eliminate the distortion in the images.

In addition to the photo, the sensor is capable of shooting video: in Full HD 1080p resolution at 60 frames per second, in HD 720p resolution - at 90 frames per second, in VGA resolution - 120 frames per second.

CMOS-sensor S5K3H2 is also made in the form factor 1 / 3.2 inches based on backlight technology, but its resolution is 8 megapixels. By the way, the BSI technology is characterized by low power consumption, so the S5K3H2 sensor is capable of operating at a voltage of only 1.2 V - this allows you to extend the life of a mobile device.

This sensor is also capable of recording video: in Full HD 1080p resolution at 30 frames per second, in HD 720p resolution - at 60 frames per second, in VGA resolution - 120 frames per second. Supported and the possibility of continuous shooting photos at speeds up to 15 frames per second.

Both sensor models are available for use with 8.5x8.5x6.0 mm camera modules with autofocus. Thus, engineers can use it in thin mobile devices.

They are already available in the form of individual samples, and the beginning of their mass production will take place in the third quarter of this year.

Source: https://habr.com/ru/post/113564/


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