Domestic sensor ceiling! Detailed explanation of OV50K40 sensor

Domestic manufacturer Haowei released a new CMOS-OV50K40 sensor.

This sensor is the world's first smartphone image sensor using TheiaCel technology. Its unique design enables a single exposure to achieve a dynamic range close to the human eye level.

The OV50K40 sensor has a native resolution of 50 million pixels and uses a 1/1.3-inch large base area, with the area of ​​each pixel reaching 1.2 microns.

In addition, it also supports four-in-one pixel output, that is, merging four pixels into one to output a 12.5-megapixel image, thus bringing more powerful photosensitivity.

The frame rate of this sensor supports 120 frames/second and 60 frames/second (HDR), enabling full 50-megapixel Bayer output, high-quality 8K video and 2x crop zoom function.

One of the most noteworthy features is its support for Quad Phase Detection (QPD) functionality, which means it is capable of 2x2 phase detection automatically across the entire sensor’s image array. Focus (PDAF), which is 2x2 ocl.

However, the most striking feature of the OV50K40 sensor is its use of Lateral Overflow Integrating Capacitor (LOFIC) technology. Its principle is to place a high-density capacitor at each photodiode position of the mobile phone sensor to collect photoelectrons that may overflow due to excessive illumination.

When a photodiode converts more photoelectrons than its capacity, the excess photoelectrons will flow into an adjacent capacitor without being lost due to overexposure. In this way, the highlight information in the shooting scene can be better captured and retained by the sensor, making the output of the photo closer to the real-world light and shadow scene, and achieving an ultra-high dynamic range.

High dynamic range is usually one of the reasons for the excellent look and texture of professional SLR camera photos, because it can restore the colors, light and shadow and other effects seen by the human eye as much as possible . The launch of the OV50K40 sensor has enabled mobile phone photography to be comparable to SLR cameras.

Editor’s comment:

The release of the OV50K40 sensor marks an innovative breakthrough for domestic manufacturers in the field of smartphones. This sensor using TheiaCel technology and LOFIC technology not only has excellent resolution and photosensitivity, but also can present a dynamic range close to the level of the human eye.

Its emergence will further promote the development of mobile photography, allowing users to easily take stunning photos and videos.

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