The VG5661 is a 1.62-megapixel monochrome CMOS image sensor manufactured by STMicroelectronics. It delivers a 1464 × 1104 pixel array with a 3.2 µm pixel pitch, providing efficient photon collection at each photosite. The optical format spans a 5.868 mm diagonal with a 2.573611111 aspect ratio, in the 1/4-inch class found in compact embedded vision modules. With 3.2 µm pixels, the sensor features compact pixel pitch suited for high-resolution imaging in space-constrained camera designs.