The ARX550 is a 0.54-megapixel CMOS image sensor manufactured by On Semi. It delivers a 848 × 638 pixel array with a 3.75 µm pixel pitch, providing efficient photon collection at each photosite. The optical format spans a 3.98 mm diagonal with a 424:319 aspect ratio. With 3.75 µm pixels, the sensor features compact pixel pitch suited for high-resolution imaging in space-constrained camera designs.