In this paper, the developing of an ultra-small size range image sensor is presented. The sensor is designed for robot hand by using an endoscopy camera and multi-slit laser projector, which can display 3D distance information. The improvements over the previous sensor are size, accessibility and measurement range in close distance. The dimension of our sensor is 16×40×53 mm and only weights about 28 g. By using a universal Webcam chip, the computer can capture the image data without installing the driver. Moreover, the sensor can measure the distance range from 50-150 mm. The effectiveness of the sensor is verified by experiment.