Accelerating Robotic Sensing: BLT and Haptron Scientific Co-Engineer Next-Gen Optical Force Sensors
As humanoid robotics and embodied intelligence technologies rapidly advance toward industrial-scale deployment, high-performance force sensing plays a critical role in enabling compliant control, precise manipulation, and robust mobility over complex terrains. Six-axis force/torque sensors have become essential components for safe and adaptive human-robot interaction. Since 2024, Haptron Scientific and Bright Laser Technologies (BLT) have collaborated to develop a new generation of optical six-axis force sensors. By integrating Haptron Scientific’s proprietary optical multimodal sensing technology with BLT’s expertise in metal additive manufacturing, the partnership has delivered a comprehensive sensor suite—including the Photon Finger, PhotonR40, Photon Ankle, and the latest industrial-grade Photon Finger Max—targeting force measurement needs at key robotic joints such as fingers, wrists, and ankles. By utilising BLT’s metal 3D printing technology, Haptron Scientific break traditional manufacturing limits, enabling complex miniaturized designs with fewer parts and simpler assembly. This innovation supports scalable production while delivering precise, durable, and lightweight force sensors for next-gen humanoid robots—enabling safer, more dexterous, and versatile robotic platforms. Photon Finger: World’s Smallest Six-Axis Force Sensor Designing dexterous hands for humanoid robots presents unique challenges—especially at the finger joints, where space is extremely constrained. These tight dimensions demand compact, high-performance sensors with seamless integration. To address the limitations of traditional machining—such as high cost, long lead times, and low yield—Haptron Scientific developed the world’s smallest six-axis force/torque sensor, the Photon Finger, using its proprietary optical multimodal sensing technology. With the support of BLT’s PBF-LB/M BLT-A100 machine and high-performance 18Ni350 maraging steel powder, the Photon Finger was structurally optimised for integration and part count reduction through one-piece metal 3D printing. This enabled: Miniaturised design tailored for tight finger joint integration 20-minute batch production cycle, with 15–30 units printed simultaneously 50–250% improvements in force range and overload tolerance Improved signal integrity, lower in-use power consumption, and faster communication—ideal for […]