Abstract: Mainstream visible light cameras are generally characterized by large volume, high power consumption, and reliance on imported core components. Meanwhile, stringent requirements for miniaturization and ultra-low power consumption of star sensors exist in aerospace, navigation, and other fields. To address these challenges, a homegrown design technology for low-power, miniaturized visible light imaging assemblies is proposed in this paper. This technology employs YIS2SIP50T, a high-performance, low-power domestic SIP circuit integrated with low-power FPGA and MCU circuits. Through architecture optimization and three-dimensional integration design, the size of a single circuit board is compressed to 25 mm × 23 mm, and the volume of the entire device (excluding the lens) is reduced to 35.8 mm × 51.5 mm × 43.4 mm. Combined with a dynamic power management strategy, the operating power consumption is stably kept below 1.5 W. This research lays a technical foundation for developing fully autonomous, controllable, miniaturized, and low-power domestic star sensors, and is applicable to vehicle-mounted, airborne, shipborne, and spaceborne platforms.