Sharp has developed a 12-Mpixel 1-inch CMOS image sensor that supports 4k video for digital camcorders. The Japanese company claims that the 1,420mV/lux-sec sensitivity of the new RJ5DY1BA0LT sensor is
the highest in the industry.

Sharp achived the high sensitivity by using 3.1 x 3.1µm pixel cells that are suited for shooting 4k video with the 1-inch size as well as its own pixel cell technologies. Because of its high brightness, the new CMOS sensor enables to take vivid images not only in bright environments but in dim environments.

In addition, the power consumption of the sensor at the time of shooting 4k video at a frame rate of 60fps is as low as 420mW because Sharp improved the speed of reading out pixel signals and applied its own circuit technology to realize low-power-consumption digital conversion. The low power consumption reduces heat generated by the image sensor, enabling allowing for a simplified heat radiation design of a device noise-free video.

Furthermore, the new sensor supports 12-Mpixel still images and can be used for digital still cameras.

Sharp will start to ship samples Aug 21, 2014. The price of the sample is ¥20,000 (approx US$193, including tax). Volume production will begin Oct 31, 2014, with a monthly production rate of 80,000 units.