The FPA64x64-C is a 0.00-megapixel stacked CMOS image sensor manufactured by Chunghwa. It delivers a 64 × 64 pixel array with a 40 µm pixel pitch, providing efficient photon collection at each photosite. The optical format spans a 3.62 mm diagonal with a 0.042361111 aspect ratio. With 40 µm pixels, the sensor features large pixels optimised for high sensitivity and dynamic range in low-light and scientific applications.