Single-point dToF (dToF) is a high-precision distance sensing technology based on photon time-of-flight measurement. It emits laser pulses and receives reflected light from the target, accurately calculating the round-trip time of the light signal to achieve rapid distance measurement to a single target point. Compared to multi-point array solutions, single-point dToF has a simpler structure, featuring small size, low power consumption, fast response speed, and high ranging accuracy. It is suitable for applications requiring precise detection in specific directions or at critical locations. SI single-point dToF products integrate high-sensitivity photodetectors, dedicated time measurement circuits, and intelligent signal processing algorithms to achieve centimeter-level distance detection and stable, reliable measurement performance. These products can be widely used in smartphone autofocus, laser ranging, smart homes, robot obstacle avoidance, industrial sensing, and other fields, providing terminal devices with fast and accurate spatial distance sensing capabilities.