Visual-Tactile Sensing: The "Final Piece of the Puzzle" for Tesla Motors' Dexterous Hands

Since Tesla Motors began developing the Optimus humanoid robot, dexterous hand research and development has been a core focus area, with Musk noting that its engineering effort accounts for half of the entire robot development. As a key component of dexterous hands, tactile sensors have become a priority for Optimus dexterous hand optimization. Visual-tactile technology is a sensing method that integrates optical imaging with tactile perception. Its core principle involves capturing microscopic deformations when elastic materials contact objects and converting them into high-resolution tactile information. Tesla Motors adheres to a "vision-first" perception approach, with the core requirement that robots can grasp and manipulate various parts and tools in unlabeled, complex environments. Visual-tactile and related multimodal tactile technologies are the best match for this need, making it highly likely that dexterous hands will adopt visual-tactile solutions.

(1) High-dimensional perception capabilities: Visual-tactile sensing can simultaneously perceive normal force, shear force, relative slip, object pose, texture, hardness and other information, approaching human hand tactile dimensions and providing robots with richer environmental interaction information, serving as an important link in understanding and manipulating the physical world.

(2) VLM large model compatibility: Visual-tactile output is in image form, highly consistent with visual data, and can directly interface with Vision-Language-Action (VLA) large models, naturally fitting their end-to-end architecture.

(3) Low cost and easy integration: GelSight visual-tactile sensors cost only $350 per unit, significantly lower than six-axis force sensors; supports rapid integration within five minutes and secondary development, compatible with multiple robot platforms and operating systems.

(4) Strong interference resistance: Optical signals are not easily affected by temperature, magnetic fields, or electromagnetic interference, enabling stable operation in high/low temperature environments (metallurgy, cold storage), electromagnetic interference, and dynamic operations (factory assembly lines).

Overseas Leadership, Domestic Companies Accelerating Catch-up Through Supply Chain and Application Scenarios

Domestic visual-tactile technology has substantial output in material design, thinning processes, calibration technology, and deep learning models, with technology gaps versus overseas not being obvious. However, time is still needed to catch up in some high-end optical materials and international brand recognition. GelSight, as the global leader in visual-tactile sensors, has established the industry's technical foundation, with Meta entering the visual-tactile field through collaboration. Domestic startups leverage local industrial chain advantages and application scenarios, accelerating catch-up through industry-academia-research collaboration:

①Diedum Technology: Combining MEMS processes with visual-tactile sensing to develop millimeter-scale high-performance sensors, addressing miniaturization pain points. Forms "hardware + perception" synergy with Longsheng Technology, empowering robot end effectors. Currently, Longsheng Technology's self-developed dexterous hand-equipped Lanshen robots are used in factory production lines, with both parties potentially forming strong synergies in the industrial robot field.

②Pasini Perception: A leader in multidimensional tactile technology, releasing the visual-tactile integrated dexterous hand DexH13 and humanoid robot TORA-ONE, significantly improving robot perception and interaction capabilities while launching a full-modal embodied intelligence super data factory, emphasizing tactile-AI integration.

③Yimu Technology: Focusing on multimodal perception and embodied intelligence, creating the world's first full-stack tactile system designed specifically for fine operations, with patents and product applications in visual-tactile sensing and calibration methods.

④Daimeng Robotics: Innovatively adopting monochromatic light technology, launching high-resolution visual-tactile sensor DM-Tac W (40,000 sensing units per square centimeter) capable of capturing multimodal information, completing hundreds of millions in financing.

⑤Weitai Robotics: Founded by the global pioneer of GelSight sensors, possessing full-process experience from technology R&D to market application, focusing on visual-tactile and hand-eye coordination, potentially becoming a key participant in defining industry standards.

⑥System manufacturer self-development and cooperation: Zhiyuan Robotics released a self-developed 19-degree-of-freedom visual-tactile dexterous hand, integrating tactile and visual-tactile perception technology based on MEMS principles; additionally, Qianjue Robotics' high-resolution multimodal tactile sensor G1-WS has been implemented on Zhiyuan robots.

Investment Recommendations

Recommended targets: Longsheng Technology; Beneficiary targets: Sunlun Technology, Marssenger, New Capec.

Risk Warnings: Macroeconomic volatility risks; robot mass production falling short of expectations; supply chain development falling short of expectations