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20+MP image sensors for next-gen smartphones?

Posted: 05 Nov 2014     Print Version  Bookmark and Share

Keywords:OmniVision Technologies  image sensor  smartphone 

OmniVision Technologies Inc. has introduced a line-up of PureCel-S 20+MP image sensors boasting image quality and performance comparable to DSCs and DVCs. Using the company's advanced stacked die process, the OV23850 and OV21840 claim to capture sharp images and video in 23.8MP and 21.4MP resolutions, respectively, while maintaining a compact form factor.

Geared as camera solutions for the next generation of flagship smartphones, the PureCel-S sensors leverage the company's stacked die technology, which separates the imaging array from the image sensor processing pipeline into a stacked die structure. This enables additional sensor functionalities, such as phase detection autofocus (PDAF), 2D contrast fast autofocus and HDR video, while maintaining a small footprint. OmniVision plans to combine the unique 2D contrast-based fast autofocus, which is up to 4x faster than traditional contrast autofocus, with PDAF to offer an optimised hybrid fast autofocus function.

PureCel-S OV23850

Supporting an active array of 5632 x 4224 pixels (23.8MP) operating at 24fps, the 1/2.3in OV23850 reaches an unprecedented resolution level for capturing images and video in a 4:3 aspect ratio in a form factor suitable for smartphones and similar mobile devices, noted OmniVision. The 1/2.4in OV21840 supports an active array of 5344 x 4016 pixels (21.4MP) operating 27fps, enabling ultra-high definition burst photography.

The OV23850 and OV21840 are capable of recording quad high definition (QHD) video at 30fps in HDR mode to enable 'always on' HDR preview mode for a resolution size popular with flagship smartphone displays. Additionally, the sensors support 720p HD video at 120fps and 1080p HD video at 90fps, allowing for crisp slow motion video recording.

The OV23850 and OV21840 fit into 10.5 x 10.5mm modules with z-heights of 6.3mm and 6mm, respectively. Both sensors are sampling and are expected to enter volume production in 1Q15.

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